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source: trunk/packages/vizservers/nanovis/Command.cpp @ 1089

Last change on this file since 1089 was 1089, checked in by dkearney, 16 years ago
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1
2	/*
3	* ----------------------------------------------------------------------
4	* Command.cpp
5	*
6	* This modules creates the Tcl interface to the nanovis server. The
7	* communication protocol of the server is the Tcl language. Commands
8	* given to the server by clients are executed in a safe interpreter and
9	* the resulting image rendered offscreen is returned as BMP-formatted
10	* image data.
11	*
12	* ======================================================================
13	* AUTHOR: Wei Qiao <qiaow@purdue.edu>
14	* Michael McLennan <mmclennan@purdue.edu>
15	* Purdue Rendering and Perceptualization Lab (PURPL)
16	*
17	* Copyright (c) 2004-2006 Purdue Research Foundation
18	*
19	* See the file "license.terms" for information on usage and
20	* redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
21	* ======================================================================
22	*/
23
24	/*
25	* TODO: In no particular order...
26	* x Convert to Tcl_CmdObj interface. (done)
27	* o Use Tcl command option parser to reduce size of procedures, remove
28	* lots of extra error checking code. (almost there)
29	* o Convert GetVolumeIndices to GetVolumes. Goal is to remove
30	* all references of Nanovis::volume[] from this file. Don't
31	* want to know how volumes are stored. Same for heightmaps.
32	* o Rationalize volume id scheme. Right now it's the index in
33	* the vector. 1) Use a list instead of a vector. 2) carry
34	* an id field that's a number that gets incremented each new volume.
35	* x Create R2, matrix, etc. libraries. (done)
36	* o Add bookkeeping for volumes, heightmaps, flows, etc. to track
37	* 1) id # 2) simulation # 3) include/exclude. The include/exclude
38	* is to indicate whether the item should contribute to the overall
39	* limits of the axes.
40	*/
41
42	#include <tcl.h>
43	#include "Trace.h"
44	#include "Command.h"
45	#include "nanovis.h"
46	#include "CmdProc.h"
47
48	#include <RpField1D.h>
49	#include <RpFieldRect3D.h>
50	#include <RpFieldPrism3D.h>
51	#include <RpEncode.h>
52	#include <RpOutcome.h>
53	#include <RpBuffer.h>
54
55	#include "transfer-function/TransferFunctionMain.h"
56	#include "transfer-function/ControlPoint.h"
57	#include "transfer-function/TransferFunctionGLUTWindow.h"
58	#include "transfer-function/ColorGradientGLUTWindow.h"
59	#include "transfer-function/ColorPaletteWindow.h"
60	#include "transfer-function/MainWindow.h"
61
62	#include "Nv.h"
63	#include "PointSetRenderer.h"
64	#include "PointSet.h"
65	#include "ZincBlendeVolume.h"
66	#include "NvLoadFile.h"
67	#include "NvColorTableRenderer.h"
68	#include "NvEventLog.h"
69	#include "NvZincBlendeReconstructor.h"
70	#include "VolumeInterpolator.h"
71	#include "HeightMap.h"
72	#include "Grid.h"
73	#include "NvCamera.h"
74	#include <RenderContext.h>
75	#include <NvLIC.h>
76
77	#define ISO_TEST 1
78	#define PLANE_CMD 0
79	#define __TEST_CODE__ 0
80	// FOR testing new functions
81	#define _LOCAL_ZINC_TEST_ 0
82
83	#if _LOCAL_ZINC_TEST_
84	#include "Test.h"
85	#endif
86
87	// EXTERN DECLARATIONS
88	// in Nv.cpp
89
90	// in nanovis.cpp
91	extern vector<PointSet*> g_pointSet;
92
93	extern PlaneRenderer* plane_render;
94	extern Texture2D* plane[10];
95
96	extern Rappture::Outcome load_volume_stream(int index, std::iostream& fin);
97	extern Rappture::Outcome load_volume_stream_odx(int index, const char *buf,
98	int nBytes);
99	extern Rappture::Outcome load_volume_stream2(int index, std::iostream& fin);
100	extern void load_volume(int index, int width, int height, int depth,
101	int n_component, float* data, double vmin, double vmax,
102	double nzero_min);
103	extern void load_vector_stream(int index, std::istream& fin);
104
105	// Tcl interpreter for incoming messages
106	static Tcl_Interp *interp;
107	static Tcl_DString cmdbuffer;
108
109	// default transfer function
110	static const char def_transfunc[] =
111	"transfunc define default {\n\
112	0.0 1 1 1\n\
113	0.2 1 1 0\n\
114	0.4 0 1 0\n\
115	0.6 0 1 1\n\
116	0.8 0 0 1\n\
117	1.0 1 0 1\n\
118	} {\n\
119	0.00 1.0\n\
120	0.05 0.0\n\
121	0.15 0.0\n\
122	0.20 1.0\n\
123	0.25 0.0\n\
124	0.35 0.0\n\
125	0.40 1.0\n\
126	0.45 0.0\n\
127	0.55 0.0\n\
128	0.60 1.0\n\
129	0.65 0.0\n\
130	0.75 0.0\n\
131	0.80 1.0\n\
132	0.85 0.0\n\
133	0.95 0.0\n\
134	1.00 1.0\n\
135	}";
136
137	static Tcl_ObjCmdProc AxisCmd;
138	static Tcl_ObjCmdProc CameraCmd;
139	static Tcl_ObjCmdProc CutplaneCmd;
140	static Tcl_ObjCmdProc FlowCmd;
141	static Tcl_ObjCmdProc GridCmd;
142	static Tcl_ObjCmdProc LegendCmd;
143	#if PLANE_CMD
144	static Tcl_ObjCmdProc PlaneCmd;
145	#endif
146	static Tcl_ObjCmdProc ScreenCmd;
147	static Tcl_ObjCmdProc SnapshotCmd;
148	static Tcl_ObjCmdProc TransfuncCmd;
149	static Tcl_ObjCmdProc UniRect2dCmd;
150	static Tcl_ObjCmdProc UpCmd;
151	static Tcl_ObjCmdProc VolumeCmd;
152
153	static bool
154	GetBooleanFromObj(Tcl_Interp interp, Tcl_Obj objPtr, bool *boolPtr)
155	{
156	int value;
157
158	if (Tcl_GetBooleanFromObj(interp, objPtr, &value) != TCL_OK) {
159	return TCL_ERROR;
160	}
161	*boolPtr = (bool)value;
162	return TCL_OK;
163	}
164
165	static int
166	GetFloatFromObj(Tcl_Interp interp, Tcl_Obj objPtr, float *valuePtr)
167	{
168	double value;
169
170	if (Tcl_GetDoubleFromObj(interp, objPtr, &value) != TCL_OK) {
171	return TCL_ERROR;
172	}
173	*valuePtr = (float)value;
174	return TCL_OK;
175	}
176
177	static int
178	GetCullMode(Tcl_Interp interp, Tcl_Obj objPtr,
179	graphics::RenderContext::CullMode *modePtr)
180	{
181	const char *string = Tcl_GetString(objPtr);
182	if (strcmp(string, "none") == 0) {
183	*modePtr = graphics::RenderContext::NO_CULL;
184	} else if (strcmp(string, "front") == 0) {
185	*modePtr = graphics::RenderContext::FRONT;
186	} else if (strcmp(string, "back") == 0) {
187	*modePtr = graphics::RenderContext::BACK;
188	} else {
189	Tcl_AppendResult(interp, "invalid cull mode \"", string,
190	"\": should be front, back, or none\"", (char *)NULL);
191	return TCL_ERROR;
192	}
193	return TCL_OK;
194	}
195
196	static int
197	GetShadingModel(Tcl_Interp interp, Tcl_Obj objPtr,
198	graphics::RenderContext::ShadingModel *modelPtr)
199	{
200	const char *string = Tcl_GetString(objPtr);
201
202	if (strcmp(string,"flat") == 0) {
203	*modelPtr = graphics::RenderContext::FLAT;
204	} else if (strcmp(string,"smooth") == 0) {
205	*modelPtr = graphics::RenderContext::SMOOTH;
206	} else {
207	Tcl_AppendResult(interp, "bad shading model \"", string,
208	"\": should be flat or smooth", (char *)NULL);
209	return TCL_ERROR;
210	}
211	return TCL_OK;
212	}
213
214	static int
215	GetPolygonMode(Tcl_Interp interp, Tcl_Obj objPtr,
216	graphics::RenderContext::PolygonMode *modePtr)
217	{
218	const char *string = Tcl_GetString(objPtr);
219
220	if (strcmp(string,"wireframe") == 0) {
221	*modePtr = graphics::RenderContext::LINE;
222	} else if (strcmp(string,"fill") == 0) {
223	*modePtr = graphics::RenderContext::FILL;
224	} else {
225	Tcl_AppendResult(interp, "invalid polygon mode \"", string,
226	"\": should be wireframe or fill\"", (char *)NULL);
227	return TCL_ERROR;
228	}
229	return TCL_OK;
230	}
231
232	/*
233	* -----------------------------------------------------------------------
234	*
235	* CreateHeightMap --
236	*
237	* Creates a heightmap from the given the data. The format of the data
238	* should be as follows:
239	*
240	* xMin, xMax, xNum, yMin, yMax, yNum, heights...
241	*
242	* xNum and yNum must be integer values, all others are real numbers.
243	* The number of heights must be xNum * yNum;
244	*
245	* -----------------------------------------------------------------------
246	*/
247	static HeightMap *
248	CreateHeightMap(ClientData clientData, Tcl_Interp *interp, int objc,
249	Tcl_Obj const objv)
250	{
251	float xMin, yMin, xMax, yMax;
252	int xNum, yNum;
253
254	if (objc != 7) {
255	Tcl_AppendResult(interp,
256	"wrong # of values: should be xMin yMin xMax yMax xNum yNum heights",
257	(char *)NULL);
258	return NULL;
259	}
260	if ((GetFloatFromObj(interp, objv[0], &xMin) != TCL_OK) \|\|
261	(GetFloatFromObj(interp, objv[1], &yMin) != TCL_OK) \|\|
262	(GetFloatFromObj(interp, objv[2], &xMax) != TCL_OK) \|\|
263	(GetFloatFromObj(interp, objv[3], &yMax) != TCL_OK) \|\|
264	(Tcl_GetIntFromObj(interp, objv[4], &xNum) != TCL_OK) \|\|
265	(Tcl_GetIntFromObj(interp, objv[5], &yNum) != TCL_OK)) {
266	return NULL;
267	}
268	int nValues;
269	Tcl_Obj **elem;
270	if (Tcl_ListObjGetElements(interp, objv[6], &nValues, &elem) != TCL_OK) {
271	return NULL;
272	}
273	if ((xNum <= 0) \|\| (yNum <= 0)) {
274	Tcl_AppendResult(interp, "bad number of x or y values", (char *)NULL);
275	return NULL;
276	}
277	if (nValues != (xNum * yNum)) {
278	Tcl_AppendResult(interp, "wrong # of heights", (char *)NULL);
279	return NULL;
280	}
281
282	float *heights;
283	heights = new float[nValues];
284	if (heights == NULL) {
285	Tcl_AppendResult(interp, "can't allocate array of heights",
286	(char *)NULL);
287	return NULL;
288	}
289
290	int i;
291	for (i = 0; i < nValues; i++) {
292	if (GetFloatFromObj(interp, elem[i], heights + i) != TCL_OK) {
293	delete [] heights;
294	return NULL;
295	}
296	}
297	HeightMap* hmPtr;
298	hmPtr = new HeightMap();
299	hmPtr->setHeight(xMin, yMin, xMax, yMax, xNum, yNum, heights);
300	hmPtr->setColorMap(NanoVis::get_transfunc("default"));
301	hmPtr->setVisible(true);
302	hmPtr->setLineContourVisible(true);
303	delete [] heights;
304	return hmPtr;
305	}
306
307	/*
308	* ----------------------------------------------------------------------
309	*
310	* GetHeightMapIndex --
311	*
312	* ----------------------------------------------------------------------
313	*/
314	static int
315	GetHeightMapIndex(Tcl_Interp interp, Tcl_Obj objPtr, unsigned int *indexPtr)
316	{
317	int index;
318	if (Tcl_GetIntFromObj(interp, objPtr, &index) != TCL_OK) {
319	return TCL_ERROR;
320	}
321	if (index < 0) {
322	Tcl_AppendResult(interp, "can't have negative index \"",
323	Tcl_GetString(objPtr), "\"", (char*)NULL);
324	return TCL_ERROR;
325	}
326	if (index >= (int)NanoVis::heightMap.size()) {
327	Tcl_AppendResult(interp, "index \"", Tcl_GetString(objPtr),
328	"\" is out of range", (char*)NULL);
329	return TCL_ERROR;
330	}
331	*indexPtr = (unsigned int)index;
332	return TCL_OK;
333	}
334
335	/*
336	* ----------------------------------------------------------------------
337	*
338	* GetHeightMapFromObj --
339	*
340	* ----------------------------------------------------------------------
341	*/
342	static int
343	GetHeightMapFromObj(Tcl_Interp interp, Tcl_Obj objPtr, HeightMap **hmPtrPtr)
344	{
345	unsigned int index;
346	if (GetHeightMapIndex(interp, objPtr, &index) != TCL_OK) {
347	return TCL_ERROR;
348	}
349	HeightMap *hmPtr;
350	hmPtr = NanoVis::heightMap[index];
351	if (hmPtr == NULL) {
352	Tcl_AppendResult(interp, "no heightmap defined for index \"",
353	Tcl_GetString(objPtr), "\"", (char*)NULL);
354	return TCL_ERROR;
355	}
356	*hmPtrPtr = hmPtr;
357	return TCL_OK;
358	}
359
360	/*
361	* ----------------------------------------------------------------------
362	* FUNCTION: GetVolumeIndex
363	*
364	* Used internally to decode a series of volume index values and
365	* store then in the specified vector. If there are no volume index
366	* arguments, this means "all volumes" to most commands, so all
367	* active volume indices are stored in the vector.
368	*
369	* Updates pushes index values into the vector. Returns TCL_OK or
370	* TCL_ERROR to indicate an error.
371	* ----------------------------------------------------------------------
372	*/
373	static int
374	GetVolumeIndex(Tcl_Interp interp, Tcl_Obj objPtr, unsigned int *indexPtr)
375	{
376	int index;
377	if (Tcl_GetIntFromObj(interp, objPtr, &index) != TCL_OK) {
378	return TCL_ERROR;
379	}
380	if (index < 0) {
381	Tcl_AppendResult(interp, "can't have negative index \"",
382	Tcl_GetString(objPtr), "\"", (char*)NULL);
383	return TCL_ERROR;
384	}
385	if (index >= (int)NanoVis::volume.size()) {
386	Tcl_AppendResult(interp, "index \"", Tcl_GetString(objPtr),
387	"\" is out of range", (char*)NULL);
388	return TCL_ERROR;
389	}
390	*indexPtr = (unsigned int)index;
391	return TCL_OK;
392	}
393
394	/*
395	* ----------------------------------------------------------------------
396	* FUNCTION: GetVolumeFromObj
397	*
398	* Used internally to decode a series of volume index values and
399	* store then in the specified vector. If there are no volume index
400	* arguments, this means "all volumes" to most commands, so all
401	* active volume indices are stored in the vector.
402	*
403	* Updates pushes index values into the vector. Returns TCL_OK or
404	* TCL_ERROR to indicate an error.
405	* ----------------------------------------------------------------------
406	*/
407	static int
408	GetVolumeFromObj(Tcl_Interp interp, Tcl_Obj objPtr, Volume **volPtrPtr)
409	{
410	unsigned int index;
411	if (GetVolumeIndex(interp, objPtr, &index) != TCL_OK) {
412	return TCL_ERROR;
413	}
414	Volume *vol;
415	vol = NanoVis::volume[index];
416	if (vol == NULL) {
417	Tcl_AppendResult(interp, "no volume defined for index \"",
418	Tcl_GetString(objPtr), "\"", (char*)NULL);
419	return TCL_ERROR;
420	}
421	*volPtrPtr = vol;
422	return TCL_OK;
423	}
424
425	/*
426	* ----------------------------------------------------------------------
427	* FUNCTION: GetVolumeIndices()
428	*
429	* Used internally to decode a series of volume index values and
430	* store then in the specified vector. If there are no volume index
431	* arguments, this means "all volumes" to most commands, so all
432	* active volume indices are stored in the vector.
433	*
434	* Updates pushes index values into the vector. Returns TCL_OK or
435	* TCL_ERROR to indicate an error.
436	* ----------------------------------------------------------------------
437	*/
438	static int
439	GetVolumeIndices(Tcl_Interp interp, int objc, Tcl_Obj const *objv,
440	vector<unsigned int>* vectorPtr)
441	{
442	if (objc == 0) {
443	for (unsigned int n = 0; n < NanoVis::volume.size(); n++) {
444	if (NanoVis::volume[n] != NULL) {
445	vectorPtr->push_back(n);
446	}
447	}
448	} else {
449	for (int n = 0; n < objc; n++) {
450	unsigned int index;
451
452	if (GetVolumeIndex(interp, objv[n], &index) != TCL_OK) {
453	return TCL_ERROR;
454	}
455	if (index < NanoVis::volume.size() && NanoVis::volume[index] != NULL) {
456	vectorPtr->push_back(index);
457	}
458	}
459	}
460	return TCL_OK;
461	}
462
463	/*
464	* ----------------------------------------------------------------------
465	* FUNCTION: GetVolumes()
466	*
467	* Used internally to decode a series of volume index values and
468	* store then in the specified vector. If there are no volume index
469	* arguments, this means "all volumes" to most commands, so all
470	* active volume indices are stored in the vector.
471	*
472	* Updates pushes index values into the vector. Returns TCL_OK or
473	* TCL_ERROR to indicate an error.
474	* ----------------------------------------------------------------------
475	*/
476	static int
477	GetVolumes(Tcl_Interp interp, int objc, Tcl_Obj const *objv,
478	vector<Volume > vectorPtr)
479	{
480	if (objc == 0) {
481	for (unsigned int n = 0; n < NanoVis::volume.size(); n++) {
482	if (NanoVis::volume[n] != NULL) {
483	vectorPtr->push_back(NanoVis::volume[n]);
484	}
485	}
486	} else {
487	for (int n = 0; n < objc; n++) {
488	Volume *volPtr;
489
490	if (GetVolumeFromObj(interp, objv[n], &volPtr) != TCL_OK) {
491	return TCL_ERROR;
492	}
493	vectorPtr->push_back(volPtr);
494	}
495	}
496	return TCL_OK;
497	}
498
499	/*
500	* ----------------------------------------------------------------------
501	* FUNCTION: GetHeightMaps()
502	*
503	* Used internally to decode a series of volume index values and
504	* store then in the specified vector. If there are no volume index
505	* arguments, this means "all volumes" to most commands, so all
506	* active volume indices are stored in the vector.
507	*
508	* Updates pushes index values into the vector. Returns TCL_OK or
509	* TCL_ERROR to indicate an error.
510	* ----------------------------------------------------------------------
511	*/
512	static int
513	GetHeightMaps(Tcl_Interp interp, int objc, Tcl_Obj const *objv,
514	vector<HeightMap > vectorPtr)
515	{
516	if (objc == 0) {
517	for (unsigned int n = 0; n < NanoVis::heightMap.size(); n++) {
518	if (NanoVis::heightMap[n] != NULL) {
519	vectorPtr->push_back(NanoVis::heightMap[n]);
520	}
521	}
522	} else {
523	for (int n = 0; n < objc; n++) {
524	HeightMap *hmPtr;
525
526	if (GetHeightMapFromObj(interp, objv[n], &hmPtr) != TCL_OK) {
527	return TCL_ERROR;
528	}
529	vectorPtr->push_back(hmPtr);
530	}
531	}
532	return TCL_OK;
533	}
534
535
536	/*
537	* ----------------------------------------------------------------------
538	* FUNCTION: GetAxis()
539	*
540	* Used internally to decode an axis value from a string ("x", "y",
541	* or "z") to its index (0, 1, or 2). Returns TCL_OK if successful,
542	* along with a value in valPtr. Otherwise, it returns TCL_ERROR
543	* and an error message in the interpreter.
544	* ----------------------------------------------------------------------
545	*/
546	static int
547	GetAxis(Tcl_Interp interp, const char string, int *indexPtr)
548	{
549	if (string[1] == '\0') {
550	char c;
551
552	c = tolower((unsigned char)string[0]);
553	if (c == 'x') {
554	*indexPtr = 0;
555	return TCL_OK;
556	} else if (c == 'y') {
557	*indexPtr = 1;
558	return TCL_OK;
559	} else if (c == 'z') {
560	*indexPtr = 2;
561	return TCL_OK;
562	}
563	/FALLTHRU/
564	}
565	Tcl_AppendResult(interp, "bad axis \"", string,
566	"\": should be x, y, or z", (char*)NULL);
567	return TCL_ERROR;
568	}
569
570	/*
571	* ----------------------------------------------------------------------
572	* FUNCTION: GetAxisFromObj()
573	*
574	* Used internally to decode an axis value from a string ("x", "y",
575	* or "z") to its index (0, 1, or 2). Returns TCL_OK if successful,
576	* along with a value in indexPtr. Otherwise, it returns TCL_ERROR
577	* and an error message in the interpreter.
578	* ----------------------------------------------------------------------
579	*/
580	static int
581	GetAxisFromObj(Tcl_Interp interp, Tcl_Obj objPtr, int *indexPtr)
582	{
583	return GetAxis(interp, Tcl_GetString(objPtr), indexPtr);
584	}
585
586	/*
587	* ----------------------------------------------------------------------
588	* FUNCTION: GetAxisDirFromObj()
589	*
590	* Used internally to decode an axis value from a string ("x", "y",
591	* or "z") to its index (0, 1, or 2). Returns TCL_OK if successful,
592	* along with a value in indexPtr. Otherwise, it returns TCL_ERROR
593	* and an error message in the interpreter.
594	* ----------------------------------------------------------------------
595	*/
596	static int
597	GetAxisDirFromObj(Tcl_Interp interp, Tcl_Obj objPtr, int indexPtr, int dirPtr)
598	{
599	const char *string = Tcl_GetString(objPtr);
600
601	int sign = 1;
602	if (*string == '-') {
603	sign = -1;
604	string++;
605	}
606	if (GetAxis(interp, string, indexPtr) != TCL_OK) {
607	return TCL_ERROR;
608	}
609	if (dirPtr != NULL) {
610	*dirPtr = sign;
611	}
612	return TCL_OK;
613	}
614
615	/*
616	* ----------------------------------------------------------------------
617	* FUNCTION: GetColor()
618	*
619	* Used internally to decode a color value from a string ("R G B")
620	* as a list of three numbers 0-1. Returns TCL_OK if successful,
621	* along with RGB values in rgbPtr. Otherwise, it returns TCL_ERROR
622	* and an error message in the interpreter.
623	* ----------------------------------------------------------------------
624	*/
625	static int
626	GetColor(Tcl_Interp interp, int objc, Tcl_Obj const objv, float rgbPtr)
627	{
628	if (objc < 3) {
629	Tcl_AppendResult(interp, "missing color values\": ",
630	"should list of R G B values 0.0 - 1.0", (char*)NULL);
631	return TCL_ERROR;
632	}
633	if ((GetFloatFromObj(interp, objv[0], rgbPtr + 0) != TCL_OK) \|\|
634	(GetFloatFromObj(interp, objv[1], rgbPtr + 1) != TCL_OK) \|\|
635	(GetFloatFromObj(interp, objv[2], rgbPtr + 2) != TCL_OK)) {
636	return TCL_ERROR;
637	}
638	return TCL_OK;
639	}
640
641
642	/*
643	* -----------------------------------------------------------------------
644	*
645	* GetDataStream --
646	*
647	* Read the requested number of bytes from standard input into the given
648	* buffer. The buffer is then decompressed and decoded.
649	*
650	* -----------------------------------------------------------------------
651	*/
652	static int
653	GetDataStream(Tcl_Interp *interp, Rappture::Buffer &buf, int nBytes)
654	{
655	char buffer[8096];
656
657	clearerr(stdin);
658	while (nBytes > 0) {
659	unsigned int chunk;
660	int nRead;
661
662	chunk = (sizeof(buffer) < (unsigned int) nBytes) ?
663	sizeof(buffer) : nBytes;
664	nRead = fread(buffer, sizeof(char), chunk, stdin);
665	if (ferror(stdin)) {
666	Tcl_AppendResult(interp, "while reading data stream: ",
667	Tcl_PosixError(interp), (char*)NULL);
668	return TCL_ERROR;
669	}
670	if (feof(stdin)) {
671	Tcl_AppendResult(interp, "premature EOF while reading data stream",
672	(char*)NULL);
673	return TCL_ERROR;
674	}
675	buf.append(buffer, nRead);
676	nBytes -= nRead;
677	}
678	{
679	Rappture::Outcome err;
680
681	err = Rappture::encoding::decode(buf, RPENC_Z\|RPENC_B64\|RPENC_HDR);
682	if (err) {
683	printf("ERROR -- DECODING\n");
684	fflush(stdout);
685	Tcl_AppendResult(interp, err.remark().c_str(), (char*)NULL);
686	return TCL_ERROR;
687	}
688	}
689	return TCL_OK;
690	}
691
692	static int
693	CameraAimOp(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
694	{
695	double x0, y0, z0;
696	if ((Tcl_GetDoubleFromObj(interp, objv[2], &x0) != TCL_OK) \|\|
697	(Tcl_GetDoubleFromObj(interp, objv[3], &y0) != TCL_OK) \|\|
698	(Tcl_GetDoubleFromObj(interp, objv[4], &z0) != TCL_OK)) {
699	return TCL_ERROR;
700	}
701	NanoVis::cam->aim(x0, y0, z0);
702	return TCL_OK;
703	}
704
705	static int
706	CameraAngleOp(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
707	{
708	double xangle, yangle, zangle;
709	if ((Tcl_GetDoubleFromObj(interp, objv[2], &xangle) != TCL_OK) \|\|
710	(Tcl_GetDoubleFromObj(interp, objv[3], &yangle) != TCL_OK) \|\|
711	(Tcl_GetDoubleFromObj(interp, objv[4], &zangle) != TCL_OK)) {
712	return TCL_ERROR;
713	}
714	NanoVis::cam->rotate(xangle, yangle, zangle);
715	return TCL_OK;
716	}
717
718	static int
719	CameraZoomOp(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
720	{
721	double zoom;
722	if (Tcl_GetDoubleFromObj(interp, objv[2], &zoom) != TCL_OK) {
723	return TCL_ERROR;
724	}
725	NanoVis::zoom(zoom);
726	return TCL_OK;
727	}
728
729	static Rappture::CmdSpec cameraOps[] = {
730	{"aim", 2, CameraAimOp, 5, 5, "x y z",},
731	{"angle", 2, CameraAngleOp, 5, 5, "xAngle yAngle zAngle",},
732	{"zoom", 1, CameraZoomOp, 3, 3, "factor",},
733	};
734	static int nCameraOps = NumCmdSpecs(cameraOps);
735
736	/*
737	* ----------------------------------------------------------------------
738	* CLIENT COMMAND:
739	* camera aim <x0> <y0> <z0>
740	* camera angle <xAngle> <yAngle> <zAngle>
741	* camera zoom <factor>
742	*
743	* Clients send these commands to manipulate the camera. The "angle"
744	* option controls the angle of the camera around the focal point.
745	* The "zoom" option sets the zoom factor, moving the camera in
746	* and out.
747	* ----------------------------------------------------------------------
748	*/
749	static int
750	CameraCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
751	{
752	Tcl_ObjCmdProc *proc;
753
754	proc = Rappture::GetOpFromObj(interp, nCameraOps, cameraOps,
755	Rappture::CMDSPEC_ARG1, objc, objv, 0);
756	if (proc == NULL) {
757	return TCL_ERROR;
758	}
759	return (*proc) (cdata, interp, objc, objv);
760	}
761
762	/ARGSUSED/
763	static int
764	SnapshotCmd(ClientData cdata, Tcl_Interp *interp, int objc,
765	Tcl_Obj const objv)
766	{
767	int w, h;
768
769	w = NanoVis::win_width, h = NanoVis::win_height;
770	NanoVis::resize_offscreen_buffer(2048, 2048);
771	#ifdef notdef
772	NanoVis::cam->set_screen_size(0, 0, NanoVis::win_width,NanoVis::win_height);
773	NanoVis::cam->set_screen_size(30, 90, 2048 - 60, 2048 - 120);
774	#endif
775	NanoVis::offscreen_buffer_capture(); //enable offscreen render
776	NanoVis::display();
777	NanoVis::read_screen();
778	#ifdef notdef
779	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
780	#endif
781	NanoVis::ppm_write("nv>print -bytes");
782	NanoVis::resize_offscreen_buffer(w, h);
783	return TCL_OK;
784	}
785
786	static int
787	CutplanePositionOp(ClientData cdata, Tcl_Interp *interp, int objc,
788	Tcl_Obj const objv)
789	{
790	float relval;
791	if (GetFloatFromObj(interp, objv[2], &relval) != TCL_OK) {
792	return TCL_ERROR;
793	}
794
795	// keep this just inside the volume so it doesn't disappear
796	if (relval < 0.01f) {
797	relval = 0.01f;
798	} else if (relval > 0.99f) {
799	relval = 0.99f;
800	}
801
802	int axis;
803	if (GetAxisFromObj(interp, objv[3], &axis) != TCL_OK) {
804	return TCL_ERROR;
805	}
806
807	vector<Volume *> ivol;
808	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
809	return TCL_ERROR;
810	}
811	vector<Volume *>::iterator iter;
812	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
813	(*iter)->move_cutplane(axis, relval);
814	}
815	return TCL_OK;
816	}
817
818	static int
819	CutplaneStateOp(ClientData cdata, Tcl_Interp *interp, int objc,
820	Tcl_Obj const objv)
821	{
822	bool state;
823	if (GetBooleanFromObj(interp, objv[2], &state) != TCL_OK) {
824	return TCL_ERROR;
825	}
826
827	int axis;
828	if (GetAxisFromObj(interp, objv[3], &axis) != TCL_OK) {
829	return TCL_ERROR;
830	}
831
832	vector<Volume *> ivol;
833	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
834	return TCL_ERROR;
835	}
836	if (state) {
837	vector<Volume *>::iterator iter;
838	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
839	(*iter)->enable_cutplane(axis);
840	}
841	} else {
842	vector<Volume *>::iterator iter;
843	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
844	(*iter)->disable_cutplane(axis);
845	}
846	}
847	return TCL_OK;
848	}
849
850	static Rappture::CmdSpec cutplaneOps[] = {
851	{"position", 1, CutplanePositionOp, 4, 0, "bool axis ?indices?",},
852	{"state", 1, CutplaneStateOp, 4, 0, "relval axis ?indices?",},
853	};
854	static int nCutplaneOps = NumCmdSpecs(cutplaneOps);
855
856	/*
857	* ----------------------------------------------------------------------
858	* CLIENT COMMAND:
859	* cutplane state on\|off <axis> ?<volume>...?
860	* cutplane position <relvalue> <axis> ?<volume>...?
861	*
862	* Clients send these commands to manipulate the cutplanes in one or
863	* more data volumes. The "state" command turns a cutplane on or
864	* off. The "position" command changes the position to a relative
865	* value in the range 0-1. The <axis> can be x, y, or z. These
866	* options are applied to the volumes represented by one or more
867	* <volume> indices. If no volumes are specified, then all volumes
868	* are updated.
869	* ----------------------------------------------------------------------
870	*/
871	static int
872	CutplaneCmd(ClientData cdata, Tcl_Interp *interp, int objc,
873	Tcl_Obj const objv)
874	{
875	Tcl_ObjCmdProc *proc;
876
877	proc = Rappture::GetOpFromObj(interp, nCutplaneOps, cutplaneOps,
878	Rappture::CMDSPEC_ARG1, objc, objv, 0);
879	if (proc == NULL) {
880	return TCL_ERROR;
881	}
882	return (*proc) (cdata, interp, objc, objv);
883	}
884
885	/*
886	* ----------------------------------------------------------------------
887	* CLIENT COMMAND:
888	* legend <volumeIndex> <width> <height>
889	*
890	* Clients use this to generate a legend image for the specified
891	* transfer function. The legend image is a color gradient from 0
892	* to one, drawn in the given transfer function. The resulting image
893	* is returned in the size <width> x <height>.
894	* ----------------------------------------------------------------------
895	*/
896	static int
897	LegendCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
898	{
899	if (objc != 4) {
900	Tcl_AppendResult(interp, "wrong # args: should be \"",
901	Tcl_GetString(objv[0]), " volIndex width height\"", (char*)NULL);
902	return TCL_ERROR;
903	}
904
905	Volume *volPtr;
906	if (GetVolumeFromObj(interp, objv[1], &volPtr) != TCL_OK) {
907	return TCL_ERROR;
908	}
909	TransferFunction *tf;
910	tf = NanoVis::vol_renderer->get_volume_shading(volPtr);
911	if (tf == NULL) {
912	Tcl_AppendResult(interp, "no transfer function defined for volume \"",
913	Tcl_GetString(objv[1]), "\"", (char*)NULL);
914	return TCL_ERROR;
915	}
916	const char *label;
917	label = Tcl_GetString(objv[1]);
918
919	int w, h;
920	if ((Tcl_GetIntFromObj(interp, objv[2], &w) != TCL_OK) \|\|
921	(Tcl_GetIntFromObj(interp, objv[3], &h) != TCL_OK)) {
922	return TCL_ERROR;
923	}
924	if (volPtr->update_pending) {
925	NanoVis::SetVolumeRanges();
926	}
927	NanoVis::render_legend(tf, Volume::valueMin, Volume::valueMax, w, h, label);
928	return TCL_OK;
929	}
930
931	/*
932	* ----------------------------------------------------------------------
933	* CLIENT COMMAND:
934	* screen <width> <height>
935	*
936	* Clients send this command to set the size of the rendering area.
937	* Future images are generated at the specified width/height.
938	* ----------------------------------------------------------------------
939	*/
940	static int
941	ScreenCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
942	{
943	if (objc != 3) {
944	Tcl_AppendResult(interp, "wrong # args: should be \"",
945	Tcl_GetString(objv[0]), " width height\"", (char*)NULL);
946	return TCL_ERROR;
947	}
948
949	int w, h;
950	if ((Tcl_GetIntFromObj(interp, objv[1], &w) != TCL_OK) \|\|
951	(Tcl_GetIntFromObj(interp, objv[2], &h) != TCL_OK)) {
952	return TCL_ERROR;
953	}
954	NanoVis::resize_offscreen_buffer(w, h);
955	return TCL_OK;
956	}
957
958	/*
959	* ----------------------------------------------------------------------
960	* CLIENT COMMAND:
961	* transfunc define <name> <colormap> <alphamap>
962	* where <colormap> = { <v> <r> <g> <b> ... }
963	* <alphamap> = { <v> <w> ... }
964	*
965	* Clients send these commands to manipulate the transfer functions.
966	* ----------------------------------------------------------------------
967	*/
968	static int
969	TransfuncCmd(ClientData cdata, Tcl_Interp *interp, int objc,
970	Tcl_Obj const objv)
971	{
972	if (objc < 2) {
973	Tcl_AppendResult(interp, "wrong # args: should be \"",
974	Tcl_GetString(objv[0]), " option arg arg...\"", (char*)NULL);
975	return TCL_ERROR;
976	}
977
978	const char *string = Tcl_GetString(objv[1]);
979	char c = string[0];
980	if ((c == 'd') && (strcmp(string, "define") == 0)) {
981	if (objc != 5) {
982	Tcl_AppendResult(interp, "wrong # args: should be \"",
983	Tcl_GetString(objv[0]), " define name colorMap alphaMap\"",
984	(char*)NULL);
985	return TCL_ERROR;
986	}
987
988	// decode the data and store in a series of fields
989	Rappture::Field1D rFunc, gFunc, bFunc, wFunc;
990	int cmapc, wmapc, i;
991	Tcl_Obj **cmapv;
992	Tcl_Obj **wmapv;
993
994	wmapv = cmapv = NULL;
995	if (Tcl_ListObjGetElements(interp, objv[3], &cmapc, &cmapv) != TCL_OK) {
996	return TCL_ERROR;
997	}
998	if ((cmapc % 4) != 0) {
999	Tcl_AppendResult(interp, "wrong # elements is colormap: should be ",
1000	"{ v r g b ... }", (char*)NULL);
1001	return TCL_ERROR;
1002	}
1003	if (Tcl_ListObjGetElements(interp, objv[4], &wmapc, &wmapv) != TCL_OK) {
1004	return TCL_ERROR;
1005	}
1006	if ((wmapc % 2) != 0) {
1007	Tcl_AppendResult(interp, "wrong # elements in alphamap: should be ",
1008	" { v w ... }", (char*)NULL);
1009	return TCL_ERROR;
1010	}
1011	for (i = 0; i < cmapc; i += 4) {
1012	int j;
1013	double q[4];
1014
1015	for (j=0; j < 4; j++) {
1016	if (Tcl_GetDoubleFromObj(interp, cmapv[i+j], &q[j]) != TCL_OK) {
1017	return TCL_ERROR;
1018	}
1019	if ((q[j] < 0.0) \|\| (q[j] > 1.0)) {
1020	Tcl_AppendResult(interp, "bad colormap value \"",
1021	Tcl_GetString(cmapv[i+j]),
1022	"\": should be in the range 0-1", (char*)NULL);
1023	return TCL_ERROR;
1024	}
1025	}
1026	rFunc.define(q[0], q[1]);
1027	gFunc.define(q[0], q[2]);
1028	bFunc.define(q[0], q[3]);
1029	}
1030	for (i=0; i < wmapc; i += 2) {
1031	double q[2];
1032	int j;
1033
1034	for (j=0; j < 2; j++) {
1035	if (Tcl_GetDoubleFromObj(interp, wmapv[i+j], &q[j]) != TCL_OK) {
1036	return TCL_ERROR;
1037	}
1038	if ((q[j] < 0.0) \|\| (q[j] > 1.0)) {
1039	Tcl_AppendResult(interp, "bad alphamap value \"",
1040	Tcl_GetString(wmapv[i+j]),
1041	"\": should be in the range 0-1", (char*)NULL);
1042	return TCL_ERROR;
1043	}
1044	}
1045	wFunc.define(q[0], q[1]);
1046	}
1047	// sample the given function into discrete slots
1048	const int nslots = 256;
1049	float data[4*nslots];
1050	for (i=0; i < nslots; i++) {
1051	double x = double(i)/(nslots-1);
1052	data[4*i] = rFunc.value(x);
1053	data[4*i+1] = gFunc.value(x);
1054	data[4*i+2] = bFunc.value(x);
1055	data[4*i+3] = wFunc.value(x);
1056	}
1057	// find or create this transfer function
1058	NanoVis::DefineTransferFunction(Tcl_GetString(objv[2]), nslots, data);
1059	} else {
1060	Tcl_AppendResult(interp, "bad option \"", string,
1061	"\": should be define", (char*)NULL);
1062	return TCL_ERROR;
1063	}
1064	return TCL_OK;
1065	}
1066
1067	/*
1068	* ----------------------------------------------------------------------
1069	* CLIENT COMMAND:
1070	* up axis
1071	*
1072	* Clients use this to set the "up" direction for all volumes. Volumes
1073	* are oriented such that this direction points upward.
1074	* ----------------------------------------------------------------------
1075	*/
1076	static int
1077	UpCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
1078	{
1079	if (objc != 2) {
1080	Tcl_AppendResult(interp, "wrong # args: should be \"",
1081	Tcl_GetString(objv[0]), " x\|y\|z\|-x\|-y\|-z\"", (char*)NULL);
1082	return TCL_ERROR;
1083	}
1084
1085	int sign;
1086	int axis;
1087	if (GetAxisDirFromObj(interp, objv[1], &axis, &sign) != TCL_OK) {
1088	return TCL_ERROR;
1089	}
1090	NanoVis::updir = (axis+1)*sign;
1091	return TCL_OK;
1092	}
1093
1094
1095	static int
1096	VolumeAnimationCaptureOp(ClientData cdata, Tcl_Interp *interp, int objc,
1097	Tcl_Obj const objv)
1098	{
1099	int total;
1100	if (Tcl_GetIntFromObj(interp, objv[3], &total) != TCL_OK) {
1101	return TCL_ERROR;
1102	}
1103	VolumeInterpolator* interpolator;
1104	interpolator = NanoVis::vol_renderer->getVolumeInterpolator();
1105	interpolator->start();
1106	if (interpolator->is_started()) {
1107	const char *fileName = (objc < 5) ? NULL : Tcl_GetString(objv[4]);
1108	for (int frame_num = 0; frame_num < total; ++frame_num) {
1109	float fraction;
1110
1111	fraction = ((float)frame_num) / (total - 1);
1112	Trace("fraction : %f\n", fraction);
1113	//interpolator->update(((float)frame_num) / (total - 1));
1114	interpolator->update(fraction);
1115
1116	NanoVis::offscreen_buffer_capture(); //enable offscreen render
1117
1118	NanoVis::display();
1119	NanoVis::read_screen();
1120
1121	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1122
1123	NanoVis::bmp_write_to_file(frame_num, fileName);
1124	}
1125	}
1126	return TCL_OK;
1127	}
1128
1129	static int
1130	VolumeAnimationClearOp(ClientData cdata, Tcl_Interp *interp, int objc,
1131	Tcl_Obj const objv)
1132	{
1133	NanoVis::vol_renderer->clearAnimatedVolumeInfo();
1134	return TCL_OK;
1135	}
1136
1137	static int
1138	VolumeAnimationStartOp(ClientData cdata, Tcl_Interp *interp, int objc,
1139	Tcl_Obj const objv)
1140	{
1141	NanoVis::vol_renderer->startVolumeAnimation();
1142	return TCL_OK;
1143	}
1144
1145	static int
1146	VolumeAnimationStopOp(ClientData cdata, Tcl_Interp *interp, int objc,
1147	Tcl_Obj const objv)
1148	{
1149	NanoVis::vol_renderer->stopVolumeAnimation();
1150	return TCL_OK;
1151	}
1152
1153	static int
1154	VolumeAnimationVolumesOp(ClientData cdata, Tcl_Interp *interp, int objc,
1155	Tcl_Obj const objv)
1156	{
1157	vector<unsigned int> ivol;
1158	if (GetVolumeIndices(interp, objc - 3, objv + 3, &ivol) != TCL_OK) {
1159	return TCL_ERROR;
1160	}
1161	Trace("parsing volume index\n");
1162	vector<unsigned int>::iterator iter;
1163	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1164	Trace("index: %d\n", *iter);
1165	NanoVis::vol_renderer->addAnimatedVolume(NanoVis::volume[iter], iter);
1166	}
1167	return TCL_OK;
1168	}
1169
1170	static Rappture::CmdSpec volumeAnimationOps[] = {
1171	{"capture", 2, VolumeAnimationCaptureOp, 4, 5, "numframes ?filename?",},
1172	{"clear", 2, VolumeAnimationClearOp, 3, 3, "",},
1173	{"start", 3, VolumeAnimationStartOp, 3, 3, "",},
1174	{"stop", 3, VolumeAnimationStopOp, 3, 3, "",},
1175	{"volumes", 1, VolumeAnimationVolumesOp, 3, 0, "?indices?",},
1176	};
1177
1178	static int nVolumeAnimationOps = NumCmdSpecs(volumeAnimationOps);
1179
1180	static int
1181	VolumeAnimationOp(ClientData cdata, Tcl_Interp *interp, int objc,
1182	Tcl_Obj const objv)
1183	{
1184	Tcl_ObjCmdProc *proc;
1185
1186	proc = Rappture::GetOpFromObj(interp, nVolumeAnimationOps, volumeAnimationOps,
1187	Rappture::CMDSPEC_ARG2, objc, objv, 0);
1188	if (proc == NULL) {
1189	return TCL_ERROR;
1190	}
1191	return (*proc) (cdata, interp, objc, objv);
1192	}
1193
1194
1195	static int
1196	VolumeDataFollowsOp(ClientData cdata, Tcl_Interp *interp, int objc,
1197	Tcl_Obj const objv)
1198	{
1199	printf("Data Loading\n");
1200	fflush(stdout);
1201
1202	int nbytes;
1203	if (Tcl_GetIntFromObj(interp, objv[3], &nbytes) != TCL_OK) {
1204	return TCL_ERROR;
1205	}
1206
1207	Rappture::Buffer buf;
1208	if (GetDataStream(interp, buf, nbytes) != TCL_OK) {
1209	return TCL_ERROR;
1210	}
1211	int n = NanoVis::n_volumes;
1212	char header[6];
1213	memcpy(header, buf.bytes(), sizeof(char) * 5);
1214	header[5] = '\0';
1215
1216	#if _LOCAL_ZINC_TEST_
1217	//FILE* fp = fopen("/home/nanohub/vrinside/nv/data/HOON/QDWL_100_100_50_strain_8000i.nd_zatom_12_1", "rb");
1218	FILE* fp;
1219
1220	fp = fopen("/home/nanohub/vrinside/nv/data/HOON/GaAs_AlGaAs_2QD_B4.nd_zc_1_wf", "rb");
1221	if (fp == NULL) {
1222	printf("cannot open the file\n");
1223	fflush(stdout);
1224	return TCL_ERROR;
1225	}
1226	unsigned char* b = (unsigned char*)malloc(buf.size());
1227	fread(b, buf.size(), 1, fp);
1228	fclose(fp);
1229	#endif /_LOCAL_ZINC_TEST_/
1230	printf("Checking header[%s]\n", header);
1231	fflush(stdout);
1232	if (strcmp(header, "<HDR>") == 0) {
1233	Volume* vol = NULL;
1234
1235	printf("ZincBlende stream is in\n");
1236	fflush(stdout);
1237	//std::stringstream fdata(std::ios_base::out\|std::ios_base::in\|std::ios_base::binary);
1238	//fdata.write(buf.bytes(),buf.size());
1239	//vol = NvZincBlendeReconstructor::getInstance()->loadFromStream(fdata);
1240
1241	#if _LOCAL_ZINC_TEST_
1242	vol = NvZincBlendeReconstructor::getInstance()->loadFromMemory(b);
1243	#else
1244	vol = NvZincBlendeReconstructor::getInstance()->loadFromMemory((void*) buf.bytes());
1245	#endif /_LOCAL_ZINC_TEST_/
1246	if (vol == NULL) {
1247	Tcl_AppendResult(interp, "can't get volume instance", (char *)NULL);
1248	return TCL_OK;
1249	}
1250	printf("finish loading\n");
1251	fflush(stdout);
1252	while (NanoVis::n_volumes <= n) {
1253	NanoVis::volume.push_back((Volume*) NULL);
1254	NanoVis::n_volumes++;
1255	}
1256
1257	if (NanoVis::volume[n] != NULL) {
1258	delete NanoVis::volume[n];
1259	NanoVis::volume[n] = NULL;
1260	}
1261
1262	float dx0 = -0.5;
1263	float dy0 = -0.5*vol->height/vol->width;
1264	float dz0 = -0.5*vol->depth/vol->width;
1265	vol->move(Vector3(dx0, dy0, dz0));
1266
1267	NanoVis::volume[n] = vol;
1268	#if __TEST_CODE__
1269	} else if (strcmp(header, "<FET>") == 0) {
1270	printf("FET loading...\n");
1271	fflush(stdout);
1272	std::stringstream fdata;
1273	fdata.write(buf.bytes(),buf.size());
1274	err = load_volume_stream3(n, fdata);
1275	if (err) {
1276	Tcl_AppendResult(interp, err.remark().c_str(), (char*)NULL);
1277	return TCL_ERROR;
1278	}
1279	#endif /__TEST_CODE__/
1280	} else if (strcmp(header, "<ODX>") == 0) {
1281	Rappture::Outcome err;
1282
1283	printf("Loading DX using OpenDX library...\n");
1284	fflush(stdout);
1285	err = load_volume_stream_odx(n, buf.bytes()+5, buf.size()-5);
1286	if (err) {
1287	Tcl_AppendResult(interp, err.remark().c_str(), (char*)NULL);
1288	return TCL_ERROR;
1289	}
1290	} else {
1291	Rappture::Outcome err;
1292
1293	printf("OpenDX loading...\n");
1294	fflush(stdout);
1295	std::stringstream fdata;
1296	fdata.write(buf.bytes(),buf.size());
1297
1298	#if ISO_TEST
1299	err = load_volume_stream2(n, fdata);
1300	#else
1301	err = load_volume_stream(n, fdata);
1302	#endif
1303	if (err) {
1304	Tcl_AppendResult(interp, err.remark().c_str(), (char*)NULL);
1305	return TCL_ERROR;
1306	}
1307	}
1308
1309	//
1310	// BE CAREFUL: Set the number of slices to something slightly different
1311	// for each volume. If we have identical volumes at exactly the same
1312	// position with exactly the same number of slices, the second volume will
1313	// overwrite the first, so the first won't appear at all.
1314	//
1315	if (NanoVis::volume[n] != NULL) {
1316	NanoVis::volume[n]->set_n_slice(256-n);
1317	NanoVis::volume[n]->disable_cutplane(0);
1318	NanoVis::volume[n]->disable_cutplane(1);
1319	NanoVis::volume[n]->disable_cutplane(2);
1320
1321	NanoVis::vol_renderer->add_volume(NanoVis::volume[n],
1322	NanoVis::get_transfunc("default"));
1323	}
1324
1325	{
1326	Volume *volPtr;
1327	char info[1024];
1328
1329	if (Volume::update_pending) {
1330	NanoVis::SetVolumeRanges();
1331	}
1332	volPtr = NanoVis::volume[n];
1333	sprintf(info, "nv>data id %d min %g max %g vmin %g vmax %g\n",
1334	n, volPtr->wAxis.Min(), volPtr->wAxis.Max(),
1335	Volume::valueMin, Volume::valueMax);
1336	write(0, info, strlen(info));
1337	}
1338	return TCL_OK;
1339	}
1340
1341	static int
1342	VolumeDataStateOp(ClientData cdata, Tcl_Interp *interp, int objc,
1343	Tcl_Obj const objv)
1344	{
1345	bool state;
1346	if (GetBooleanFromObj(interp, objv[3], &state) != TCL_OK) {
1347	return TCL_ERROR;
1348	}
1349	vector<Volume *> ivol;
1350	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1351	return TCL_ERROR;
1352	}
1353	if (state) {
1354	vector<Volume *>::iterator iter;
1355	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1356	(*iter)->enable_data();
1357	}
1358	} else {
1359	vector<Volume *>::iterator iter;
1360	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1361	(*iter)->disable_data();
1362	}
1363	}
1364	return TCL_OK;
1365	}
1366
1367	static Rappture::CmdSpec volumeDataOps[] = {
1368	{"follows", 1, VolumeDataFollowsOp, 4, 4, "size",},
1369	{"state", 1, VolumeDataStateOp, 4, 0, "bool ?indices?",},
1370	};
1371	static int nVolumeDataOps = NumCmdSpecs(volumeDataOps);
1372
1373	static int
1374	VolumeDataOp(ClientData cdata, Tcl_Interp *interp, int objc,
1375	Tcl_Obj const objv)
1376	{
1377	Tcl_ObjCmdProc *proc;
1378
1379	proc = Rappture::GetOpFromObj(interp, nVolumeDataOps, volumeDataOps,
1380	Rappture::CMDSPEC_ARG2, objc, objv, 0);
1381	if (proc == NULL) {
1382	return TCL_ERROR;
1383	}
1384	return (*proc) (cdata, interp, objc, objv);
1385	}
1386
1387	static int
1388	VolumeOutlineColorOp(ClientData cdata, Tcl_Interp *interp, int objc,
1389	Tcl_Obj const objv)
1390	{
1391	float rgb[3];
1392	if (GetColor(interp, objc - 3, objv + 3, rgb) != TCL_OK) {
1393	return TCL_ERROR;
1394	}
1395	vector<Volume *> ivol;
1396	if (GetVolumes(interp, objc - 6, objv + 6, &ivol) != TCL_OK) {
1397	return TCL_ERROR;
1398	}
1399	vector<Volume *>::iterator iter;
1400	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1401	(*iter)->set_outline_color(rgb);
1402	}
1403	return TCL_OK;
1404	}
1405
1406	static int
1407	VolumeOutlineStateOp(ClientData cdata, Tcl_Interp *interp, int objc,
1408	Tcl_Obj const objv)
1409	{
1410	bool state;
1411	if (GetBooleanFromObj(interp, objv[3], &state) != TCL_OK) {
1412	return TCL_ERROR;
1413	}
1414	vector<Volume *> ivol;
1415	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1416	return TCL_ERROR;
1417	}
1418	if (state) {
1419	vector<Volume *>::iterator iter;
1420	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1421	(*iter)->enable_outline();
1422	}
1423	} else {
1424	vector<Volume *>::iterator iter;
1425	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1426	(*iter)->disable_outline();
1427	}
1428	}
1429	return TCL_OK;
1430	}
1431
1432
1433	static Rappture::CmdSpec volumeOutlineOps[] = {
1434	{"color", 1, VolumeOutlineColorOp, 6, 0, "r g b ?indices?",},
1435	{"state", 1, VolumeOutlineStateOp, 4, 0, "bool ?indices?",},
1436	{"visible", 1, VolumeOutlineStateOp, 4, 0, "bool ?indices?",},
1437	};
1438	static int nVolumeOutlineOps = NumCmdSpecs(volumeOutlineOps);
1439
1440	static int
1441	VolumeOutlineOp(ClientData cdata, Tcl_Interp *interp, int objc,
1442	Tcl_Obj const objv)
1443	{
1444	Tcl_ObjCmdProc *proc;
1445
1446	proc = Rappture::GetOpFromObj(interp, nVolumeOutlineOps, volumeOutlineOps,
1447	Rappture::CMDSPEC_ARG2, objc, objv, 0);
1448	if (proc == NULL) {
1449	return TCL_ERROR;
1450	}
1451	return (*proc) (cdata, interp, objc, objv);
1452	}
1453
1454	static int
1455	VolumeShadingDiffuseOp(ClientData cdata, Tcl_Interp *interp, int objc,
1456	Tcl_Obj const objv)
1457	{
1458	float diffuse;
1459	if (GetFloatFromObj(interp, objv[3], &diffuse) != TCL_OK) {
1460	return TCL_ERROR;
1461	}
1462
1463	vector<Volume *> ivol;
1464	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1465	return TCL_ERROR;
1466	}
1467	vector<Volume *>::iterator iter;
1468	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1469	(*iter)->set_diffuse(diffuse);
1470	}
1471	return TCL_OK;
1472	}
1473
1474	static int
1475	VolumeShadingIsosurfaceOp(ClientData cdata, Tcl_Interp *interp, int objc,
1476	Tcl_Obj const objv)
1477	{
1478	bool iso_surface;
1479	if (GetBooleanFromObj(interp, objv[3], &iso_surface) != TCL_OK) {
1480	return TCL_ERROR;
1481	}
1482	vector<Volume *> ivol;
1483	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1484	return TCL_ERROR;
1485	}
1486	vector<Volume *>::iterator iter;
1487	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1488	(*iter)->set_isosurface(iso_surface);
1489	}
1490	return TCL_OK;
1491	}
1492
1493	static int
1494	VolumeShadingOpacityOp(ClientData cdata, Tcl_Interp *interp, int objc,
1495	Tcl_Obj const objv)
1496	{
1497
1498	float opacity;
1499	if (GetFloatFromObj(interp, objv[3], &opacity) != TCL_OK) {
1500	return TCL_ERROR;
1501	}
1502	printf("set opacity %f\n", opacity);
1503	vector<Volume *> ivol;
1504	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1505	return TCL_ERROR;
1506	}
1507	vector<Volume *>::iterator iter;
1508	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1509	(*iter)->set_opacity_scale(opacity);
1510	}
1511	return TCL_OK;
1512	}
1513
1514	static int
1515	VolumeShadingSpecularOp(ClientData cdata, Tcl_Interp *interp, int objc,
1516	Tcl_Obj const objv)
1517	{
1518	float specular;
1519	if (GetFloatFromObj(interp, objv[3], &specular) != TCL_OK) {
1520	return TCL_ERROR;
1521	}
1522	vector<Volume *> ivol;
1523	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1524	return TCL_ERROR;
1525	}
1526	vector<Volume *>::iterator iter;
1527	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1528	(*iter)->set_specular(specular);
1529	}
1530	return TCL_OK;
1531	}
1532
1533	static int
1534	VolumeShadingTransFuncOp(ClientData cdata, Tcl_Interp *interp, int objc,
1535	Tcl_Obj const objv)
1536	{
1537	TransferFunction *tf;
1538	const char *name = Tcl_GetString(objv[3]);
1539	tf = NanoVis::get_transfunc(name);
1540	if (tf == NULL) {
1541	Tcl_AppendResult(interp, "transfer function \"", name,
1542	"\" is not defined", (char*)NULL);
1543	return TCL_ERROR;
1544	}
1545	vector<Volume *> ivol;
1546	if (GetVolumes(interp, objc - 4, objv + 4, &ivol) != TCL_OK) {
1547	return TCL_ERROR;
1548	}
1549	vector<Volume *>::iterator iter;
1550	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1551	NanoVis::vol_renderer->shade_volume(*iter, tf);
1552	#ifdef POINTSET
1553	// TBD..
1554	// POINTSET
1555	if ((*iter)->pointsetIndex != -1) {
1556	g_pointSet[(*iter)->pointsetIndex]->updateColor(tf->getData(), 256);
1557	}
1558	#endif /POINTSET/
1559	}
1560	return TCL_OK;
1561	}
1562
1563	static Rappture::CmdSpec volumeShadingOps[] = {
1564	{"diffuse", 1, VolumeShadingDiffuseOp, 4, 0, "value ?indices?",},
1565	{"isosurface", 1, VolumeShadingIsosurfaceOp, 4, 0, "bool ?indices?",},
1566	{"opacity", 1, VolumeShadingOpacityOp, 4, 0, "value ?indices?",},
1567	{"specular", 1, VolumeShadingSpecularOp, 4, 0, "value ?indices?",},
1568	{"transfunc", 1, VolumeShadingTransFuncOp, 4, 0, "funcName ?indices?",},
1569	};
1570	static int nVolumeShadingOps = NumCmdSpecs(volumeShadingOps);
1571
1572	static int
1573	VolumeShadingOp(ClientData cdata, Tcl_Interp *interp, int objc,
1574	Tcl_Obj const objv)
1575	{
1576	Tcl_ObjCmdProc *proc;
1577
1578	proc = Rappture::GetOpFromObj(interp, nVolumeShadingOps, volumeShadingOps,
1579	Rappture::CMDSPEC_ARG2, objc, objv, 0);
1580	if (proc == NULL) {
1581	return TCL_ERROR;
1582	}
1583	return (*proc) (cdata, interp, objc, objv);
1584	}
1585
1586	static int
1587	VolumeAxisOp(ClientData cdata, Tcl_Interp *interp, int objc,
1588	Tcl_Obj const objv)
1589	{
1590	const char *string = Tcl_GetString(objv[2]);
1591	char c;
1592	c = string[0];
1593	if ((c == 'l') && (strcmp(string, "label") == 0)) {
1594	int axis;
1595	if (GetAxisFromObj(interp, objv[3], &axis) != TCL_OK) {
1596	return TCL_ERROR;
1597	}
1598	vector<Volume *> ivol;
1599	if (GetVolumes(interp, objc - 5, objv + 5, &ivol) != TCL_OK) {
1600	return TCL_ERROR;
1601	}
1602	vector<Volume *>::iterator iter;
1603	const char *label;
1604	label = Tcl_GetString(objv[4]);
1605	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1606	(*iter)->set_label(axis, label);
1607	}
1608	} else {
1609	Tcl_AppendResult(interp, "bad option \"", string,
1610	"\": should be label", (char*)NULL);
1611	return TCL_ERROR;
1612	}
1613	return TCL_OK;
1614	}
1615
1616	static int
1617	VolumeStateOp(ClientData cdata, Tcl_Interp *interp, int objc,
1618	Tcl_Obj const objv)
1619	{
1620	bool state;
1621	if (GetBooleanFromObj(interp, objv[2], &state) != TCL_OK) {
1622	return TCL_ERROR;
1623	}
1624	vector<Volume *> ivol;
1625	if (GetVolumes(interp, objc - 3, objv + 3, &ivol) != TCL_OK) {
1626	return TCL_ERROR;
1627	}
1628	if (state) {
1629	vector<Volume *>::iterator iter;
1630	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1631	(*iter)->enable();
1632	}
1633	} else {
1634	vector<Volume *>::iterator iter;
1635	for (iter = ivol.begin(); iter != ivol.end(); iter++) {
1636	(*iter)->disable();
1637	}
1638	}
1639	return TCL_OK;
1640	}
1641
1642	static int
1643	VolumeTestOp(ClientData cdata, Tcl_Interp *interp, int objc,
1644	Tcl_Obj const objv)
1645	{
1646	NanoVis::volume[1]->disable_data();
1647	NanoVis::volume[1]->disable();
1648	return TCL_OK;
1649	}
1650
1651	static Rappture::CmdSpec volumeOps[] = {
1652	{"animation", 2, VolumeAnimationOp, 3, 0, "oper ?args?",},
1653	{"axis", 2, VolumeAxisOp, 4, 0, "label axis value ?indices?",},
1654	{"data", 1, VolumeDataOp, 3, 0, "oper ?args?",},
1655	{"outline", 1, VolumeOutlineOp, 3, 0, "oper ?args?",},
1656	{"shading", 2, VolumeShadingOp, 3, 0, "oper ?args?",},
1657	{"state", 2, VolumeStateOp, 3, 0, "bool ?indices?",},
1658	{"test2", 1, VolumeTestOp, 2, 2, "",},
1659	};
1660	static int nVolumeOps = NumCmdSpecs(volumeOps);
1661
1662	/*
1663	* ----------------------------------------------------------------------
1664	* CLIENT COMMAND:
1665	* volume axis label x\|y\|z <value> ?<volumeId> ...?
1666	* volume data state on\|off ?<volumeId> ...?
1667	* volume outline state on\|off ?<volumeId> ...?
1668	* volume outline color on\|off ?<volumeId> ...?
1669	* volume shading transfunc <name> ?<volumeId> ...?
1670	* volume shading diffuse <value> ?<volumeId> ...?
1671	* volume shading specular <value> ?<volumeId> ...?
1672	* volume shading opacity <value> ?<volumeId> ...?
1673	* volume state on\|off ?<volumeId> ...?
1674	*
1675	* Clients send these commands to manipulate the volumes.
1676	* ----------------------------------------------------------------------
1677	*/
1678	static int
1679	VolumeCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
1680	{
1681	Tcl_ObjCmdProc *proc;
1682
1683	proc = Rappture::GetOpFromObj(interp, nVolumeOps, volumeOps,
1684	Rappture::CMDSPEC_ARG1, objc, objv, 0);
1685	if (proc == NULL) {
1686	return TCL_ERROR;
1687	}
1688	return (*proc) (cdata, interp, objc, objv);
1689	}
1690
1691	static int
1692	FlowCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
1693	{
1694	Rappture::Outcome err;
1695
1696	if (objc < 2) {
1697	Tcl_AppendResult(interp, "wrong # args: should be \"",
1698	Tcl_GetString(objv[0]), " option ?arg arg?", (char *)NULL);
1699	return TCL_ERROR;
1700	}
1701	const char *string = Tcl_GetString(objv[1]);
1702	char c = string[0];
1703	if ((c == 'v') && (strcmp(string, "vectorid") == 0)) {
1704	if (objc != 3) {
1705	Tcl_AppendResult(interp, "wrong # args: should be \"",
1706	Tcl_GetString(objv[0]), " vectorid volume", (char *)NULL);
1707	return TCL_ERROR;
1708	}
1709	Volume *volPtr;
1710	if (GetVolumeFromObj(interp, objv[2], &volPtr) != TCL_OK) {
1711	return TCL_ERROR;
1712	}
1713	if (NanoVis::particleRenderer != NULL) {
1714	NanoVis::particleRenderer->setVectorField(volPtr->id, 1.0f,
1715	volPtr->height / (float)volPtr->width,
1716	volPtr->depth / (float)volPtr->width,
1717	volPtr->wAxis.Max());
1718	NanoVis::initParticle();
1719	}
1720	if (NanoVis::licRenderer != NULL) {
1721	NanoVis::licRenderer->setVectorField(volPtr->id,
1722	1.0f / volPtr->aspect_ratio_width,
1723	1.0f / volPtr->aspect_ratio_height,
1724	1.0f / volPtr->aspect_ratio_depth,
1725	volPtr->wAxis.Max());
1726	NanoVis::licRenderer->set_offset(NanoVis::lic_slice_z);
1727	}
1728	} else if (c == 'l' && strcmp(string, "lic") == 0) {
1729	if (objc != 3) {
1730	Tcl_AppendResult(interp, "wrong # args: should be \"",
1731	Tcl_GetString(objv[0]), " lic on\|off\"", (char*)NULL);
1732	return TCL_ERROR;
1733	}
1734	bool state;
1735	if (GetBooleanFromObj(interp, objv[2], &state) != TCL_OK) {
1736	return TCL_ERROR;
1737	}
1738	NanoVis::lic_on = state;
1739	} else if ((c == 'p') && (strcmp(string, "particle") == 0)) {
1740	if (objc < 3) {
1741	Tcl_AppendResult(interp, "wrong # args: should be \"",
1742	Tcl_GetString(objv[0]), " particle visible\|slice\|slicepos arg \"",
1743	(char*)NULL);
1744	return TCL_ERROR;
1745	}
1746	const char *string = Tcl_GetString(objv[2]);
1747	c = string[0];
1748	if ((c == 'v') && (strcmp(string, "visible") == 0)) {
1749	if (objc != 4) {
1750	Tcl_AppendResult(interp, "wrong # args: should be \"",
1751	Tcl_GetString(objv[0]), " particle visible on\|off\"",
1752	(char*)NULL);
1753	return TCL_ERROR;
1754	}
1755	bool state;
1756	if (GetBooleanFromObj(interp, objv[3], &state) != TCL_OK) {
1757	return TCL_ERROR;
1758	}
1759	NanoVis::particle_on = state;
1760	} else if ((c == 's') && (strcmp(string, "slice") == 0)) {
1761	if (objc != 4) {
1762	Tcl_AppendResult(interp, "wrong # args: should be \"",
1763	Tcl_GetString(objv[0]),
1764	" particle slice volume\"", (char*)NULL);
1765	return TCL_ERROR;
1766	}
1767	int axis;
1768	if (GetAxisFromObj(interp, objv[3], &axis) != TCL_OK) {
1769	return TCL_ERROR;
1770	}
1771	NanoVis::lic_axis = axis;
1772	} else if ((c == 's') && (strcmp(string, "slicepos") == 0)) {
1773	if (objc != 4) {
1774	Tcl_AppendResult(interp, "wrong # args: should be \"",
1775	Tcl_GetString(objv[0]), " particle slicepos value\"",
1776	(char*)NULL);
1777	return TCL_ERROR;
1778	}
1779	float pos;
1780	if (GetFloatFromObj(interp, objv[2], &pos) != TCL_OK) {
1781	return TCL_ERROR;
1782	}
1783	if (pos < 0.0f) {
1784	pos = 0.0f;
1785	} else if (pos > 1.0f) {
1786	pos = 1.0f;
1787	}
1788	switch (NanoVis::lic_axis) {
1789	case 0 :
1790	NanoVis::lic_slice_x = pos;
1791	break;
1792	case 1 :
1793	NanoVis::lic_slice_y = pos;
1794	break;
1795	case 2 :
1796	NanoVis::lic_slice_z = pos;
1797	break;
1798	}
1799	} else {
1800	Tcl_AppendResult(interp, "unknown option \"", string,
1801	"\": should be \"", Tcl_GetString(objv[0]),
1802	" visible, slice, or slicepos\"", (char *)NULL);
1803	return TCL_ERROR;
1804	}
1805	} else if ((c == 'r') && (strcmp(string, "reset") == 0)) {
1806	NanoVis::initParticle();
1807	} else if ((c == 'c') && (strcmp(string, "capture") == 0)) {
1808	if (objc > 4 \|\| objc < 3) {
1809	Tcl_AppendResult(interp, "wrong # args: should be \"",
1810	Tcl_GetString(objv[0]), " capture numframes [directory]\"",
1811	(char*)NULL);
1812	return TCL_ERROR;
1813	}
1814	int total_frame_count;
1815
1816	if (Tcl_GetIntFromObj(interp, objv[2], &total_frame_count) != TCL_OK) {
1817	return TCL_ERROR;
1818	}
1819	if (NanoVis::licRenderer) {
1820	NanoVis::licRenderer->activate();
1821	}
1822	if (NanoVis::particleRenderer) {
1823	NanoVis::particleRenderer->activate();
1824	}
1825	// Karl
1826	//
1827	Trace("FLOW started\n");
1828	const char *fileName;
1829	fileName = (objc < 4) ? NULL : Tcl_GetString(objv[3]);
1830	for (int frame_count = 0; frame_count < total_frame_count;
1831	frame_count++) {
1832
1833	// Generate the latest frame and send it back to the client
1834	if (NanoVis::licRenderer &&
1835	NanoVis::licRenderer->isActivated()) {
1836	NanoVis::licRenderer->convolve();
1837	}
1838	if (NanoVis::particleRenderer &&
1839	NanoVis::particleRenderer->isActivated()) {
1840	NanoVis::particleRenderer->advect();
1841	}
1842	NanoVis::offscreen_buffer_capture(); //enable offscreen render
1843	NanoVis::display();
1844
1845	// printf("Read Screen for Writing to file...\n");
1846
1847	NanoVis::read_screen();
1848	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1849
1850	NanoVis::bmp_write_to_file(frame_count, fileName);
1851	}
1852	Trace("FLOW end\n");
1853	// put your code...
1854	if (NanoVis::licRenderer) {
1855	NanoVis::licRenderer->deactivate();
1856	}
1857	if (NanoVis::particleRenderer) {
1858	NanoVis::particleRenderer->deactivate();
1859	}
1860	NanoVis::initParticle();
1861	} else if ((c == 'd') && (strcmp(string, "data") == 0)) {
1862	if (objc < 3) {
1863	Tcl_AppendResult(interp, "wrong # args: should be \"",
1864	Tcl_GetString(objv[0]), " data follows ?args?", (char *)NULL);
1865	return TCL_ERROR;
1866	}
1867	const char *string = Tcl_GetString(objv[2]);;
1868	c = string[0];
1869	if ((c == 'f') && (strcmp(string,"follows") == 0)) {
1870	if (objc != 4) {
1871	Tcl_AppendResult(interp, "wrong # args: should be \"",
1872	Tcl_GetString(objv[0]), " data follows length",
1873	(char *)NULL);
1874	return TCL_ERROR;
1875	}
1876	int nbytes;
1877	if (Tcl_GetIntFromObj(interp, objv[3], &nbytes) != TCL_OK) {
1878	return TCL_ERROR;
1879	}
1880	Rappture::Buffer buf;
1881	if (GetDataStream(interp, buf, nbytes) != TCL_OK) {
1882	return TCL_ERROR;
1883	}
1884	int n = NanoVis::n_volumes;
1885	std::stringstream fdata;
1886	fdata.write(buf.bytes(),buf.size());
1887	load_vector_stream(n, fdata);
1888	Volume *volPtr = NanoVis::volume[n];
1889
1890	//
1891	// BE CAREFUL: Set the number of slices to something
1892	// slightly different for each volume. If we have
1893	// identical volumes at exactly the same position
1894	// with exactly the same number of slices, the second
1895	// volume will overwrite the first, so the first won't
1896	// appear at all.
1897	//
1898	if (volPtr != NULL) {
1899	volPtr->set_n_slice(256-n);
1900	volPtr->disable_cutplane(0);
1901	volPtr->disable_cutplane(1);
1902	volPtr->disable_cutplane(2);
1903
1904	NanoVis::vol_renderer->add_volume(volPtr,
1905	NanoVis::get_transfunc("default"));
1906	}
1907	}
1908	} else {
1909	return TCL_ERROR;
1910	}
1911	return TCL_OK;
1912	}
1913
1914
1915	static int
1916	HeightMapDataFollowsOp(ClientData cdata, Tcl_Interp *interp, int objc,
1917	Tcl_Obj const objv)
1918	{
1919	Rappture::Buffer buf;
1920	int nBytes;
1921
1922	if (Tcl_GetIntFromObj(interp, objv[3], &nBytes) != TCL_OK) {
1923	return TCL_ERROR;
1924	}
1925	if (GetDataStream(interp, buf, nBytes) != TCL_OK) {
1926	return TCL_ERROR;
1927	}
1928	buf.append("\0", 1);
1929	int result;
1930	result = Tcl_Eval(interp, buf.bytes());
1931	if (result != TCL_OK) {
1932	fprintf(stderr, "error in command: %s\n", Tcl_GetStringResult(interp));
1933	fflush(stderr);
1934	}
1935	return result;
1936	}
1937
1938	static int
1939	HeightMapDataVisibleOp(ClientData cdata, Tcl_Interp *interp, int objc,
1940	Tcl_Obj const objv)
1941	{
1942	bool visible;
1943	if (GetBooleanFromObj(interp, objv[3], &visible) != TCL_OK) {
1944	return TCL_ERROR;
1945	}
1946	vector<HeightMap *> imap;
1947	if (GetHeightMaps(interp, objc - 4, objv + 4, &imap) != TCL_OK) {
1948	return TCL_ERROR;
1949	}
1950	vector<HeightMap *>::iterator iter;
1951	for (iter = imap.begin(); iter != imap.end(); iter++) {
1952	(*iter)->setVisible(visible);
1953	}
1954	return TCL_OK;
1955	}
1956
1957	static Rappture::CmdSpec heightMapDataOps[] = {
1958	{"follows", 1, HeightMapDataFollowsOp, 4, 4, "length",},
1959	{"visible", 1, HeightMapDataVisibleOp, 4, 0, "bool ?indices?",},
1960	};
1961	static int nHeightMapDataOps = NumCmdSpecs(heightMapDataOps);
1962
1963	static int
1964	HeightMapDataOp(ClientData cdata, Tcl_Interp *interp, int objc,
1965	Tcl_Obj const objv)
1966	{
1967	Tcl_ObjCmdProc *proc;
1968
1969	proc = Rappture::GetOpFromObj(interp, nHeightMapDataOps, heightMapDataOps,
1970	Rappture::CMDSPEC_ARG2, objc, objv, 0);
1971	if (proc == NULL) {
1972	return TCL_ERROR;
1973	}
1974	return (*proc) (cdata, interp, objc, objv);
1975	}
1976
1977
1978	static int
1979	HeightMapLineContourColorOp(ClientData cdata, Tcl_Interp *interp, int objc,
1980	Tcl_Obj const objv)
1981	{
1982	float rgb[3];
1983	if (GetColor(interp, objc - 3, objv + 3, rgb) != TCL_OK) {
1984	return TCL_ERROR;
1985	}
1986	vector<HeightMap *> imap;
1987	if (GetHeightMaps(interp, objc - 6, objv + 6, &imap) != TCL_OK) {
1988	return TCL_ERROR;
1989	}
1990	vector<HeightMap *>::iterator iter;
1991	for (iter = imap.begin(); iter != imap.end(); iter++) {
1992	(*iter)->setLineContourColor(rgb);
1993	}
1994	return TCL_OK;
1995	}
1996
1997	static int
1998	HeightMapLineContourVisibleOp(ClientData cdata, Tcl_Interp *interp, int objc,
1999	Tcl_Obj const objv)
2000	{
2001	bool visible;
2002	if (GetBooleanFromObj(interp, objv[3], &visible) != TCL_OK) {
2003	return TCL_ERROR;
2004	}
2005	vector<HeightMap *> imap;
2006	if (GetHeightMaps(interp, objc - 4, objv + 4, &imap) != TCL_OK) {
2007	return TCL_ERROR;
2008	}
2009	vector<HeightMap *>::iterator iter;
2010	for (iter = imap.begin(); iter != imap.end(); iter++) {
2011	(*iter)->setLineContourVisible(visible);
2012	}
2013	return TCL_OK;
2014	}
2015
2016	static Rappture::CmdSpec heightMapLineContourOps[] = {
2017	{"color", 1, HeightMapLineContourColorOp, 4, 4, "length",},
2018	{"visible", 1, HeightMapLineContourVisibleOp, 4, 0, "bool ?indices?",},
2019	};
2020	static int nHeightMapLineContourOps = NumCmdSpecs(heightMapLineContourOps);
2021
2022	static int
2023	HeightMapLineContourOp(ClientData cdata, Tcl_Interp *interp, int objc,
2024	Tcl_Obj const objv)
2025	{
2026	Tcl_ObjCmdProc *proc;
2027
2028	proc = Rappture::GetOpFromObj(interp, nHeightMapLineContourOps,
2029	heightMapLineContourOps, Rappture::CMDSPEC_ARG2, objc, objv, 0);
2030	if (proc == NULL) {
2031	return TCL_ERROR;
2032	}
2033	return (*proc) (cdata, interp, objc, objv);
2034	}
2035
2036	static int
2037	HeightMapCullOp(ClientData cdata, Tcl_Interp *interp, int objc,
2038	Tcl_Obj const objv)
2039	{
2040	graphics::RenderContext::CullMode mode;
2041	if (GetCullMode(interp, objv[2], &mode) != TCL_OK) {
2042	return TCL_ERROR;
2043	}
2044	NanoVis::renderContext->setCullMode(mode);
2045	return TCL_OK;
2046	}
2047
2048	static int
2049	HeightMapCreateOp(ClientData cdata, Tcl_Interp *interp, int objc,
2050	Tcl_Obj const objv)
2051	{
2052	HeightMap *hmPtr;
2053
2054	/* heightmap create xmin ymin xmax ymax xnum ynum values */
2055	hmPtr = CreateHeightMap(cdata, interp, objc - 2, objv + 2);
2056	if (hmPtr == NULL) {
2057	return TCL_ERROR;
2058	}
2059	NanoVis::heightMap.push_back(hmPtr);
2060	Tcl_SetIntObj(Tcl_GetObjResult(interp), NanoVis::heightMap.size() - 1);;
2061	return TCL_OK;
2062	}
2063
2064	static int
2065	HeightMapLegendOp(ClientData cdata, Tcl_Interp *interp, int objc,
2066	Tcl_Obj const objv)
2067	{
2068	HeightMap *hmPtr;
2069	if (GetHeightMapFromObj(interp, objv[2], &hmPtr) != TCL_OK) {
2070	return TCL_ERROR;
2071	}
2072	TransferFunction *tf;
2073	tf = hmPtr->getColorMap();
2074	if (tf == NULL) {
2075	Tcl_AppendResult(interp, "no transfer function defined for heightmap \"",
2076	Tcl_GetString(objv[2]), "\"", (char*)NULL);
2077	return TCL_ERROR;
2078	}
2079	int w, h;
2080	if ((Tcl_GetIntFromObj(interp, objv[3], &w) != TCL_OK) \|\|
2081	(Tcl_GetIntFromObj(interp, objv[4], &h) != TCL_OK)) {
2082	return TCL_ERROR;
2083	}
2084	if (HeightMap::update_pending) {
2085	NanoVis::SetHeightmapRanges();
2086	}
2087	NanoVis::render_legend(tf, HeightMap::valueMin, HeightMap::valueMax, w, h,
2088	"label");
2089	return TCL_OK;
2090	}
2091
2092	static int
2093	HeightMapPolygonOp(ClientData cdata, Tcl_Interp *interp, int objc,
2094	Tcl_Obj const objv)
2095	{
2096	graphics::RenderContext::PolygonMode mode;
2097	if (GetPolygonMode(interp, objv[2], &mode) != TCL_OK) {
2098	return TCL_ERROR;
2099	}
2100	NanoVis::renderContext->setPolygonMode(mode);
2101	return TCL_OK;
2102	}
2103
2104	static int
2105	HeightMapShadingOp(ClientData cdata, Tcl_Interp *interp, int objc,
2106	Tcl_Obj const objv)
2107	{
2108	graphics::RenderContext::ShadingModel model;
2109	if (GetShadingModel(interp, objv[2], &model) != TCL_OK) {
2110	return TCL_ERROR;
2111	}
2112	NanoVis::renderContext->setShadingModel(model);
2113	return TCL_OK;
2114	}
2115
2116	static int
2117	HeightMapTestOp(ClientData cdata, Tcl_Interp *interp, int objc,
2118	Tcl_Obj const objv)
2119	{
2120	srand((unsigned)time(NULL));
2121
2122	int size = 20 * 200;
2123	double sigma = 5.0;
2124	double mean = exp(0.0) / (sigma * sqrt(2.0));
2125	float* data = (float) malloc(sizeof(float) size);
2126
2127	float x;
2128	for (int i = 0; i < size; ++i) {
2129	x = - 10 + i%20;
2130	data[i] = exp(- (x * x)/(2 * sigma * sigma)) /
2131	(sigma * sqrt(2.0)) / mean * 2 + 1000;
2132	}
2133
2134	HeightMap* hmPtr = new HeightMap();
2135	float minx = 0.0f;
2136	float maxx = 1.0f;
2137	float miny = 0.5f;
2138	float maxy = 3.5f;
2139	hmPtr->setHeight(minx, miny, maxx, maxy, 20, 200, data);
2140	hmPtr->setColorMap(NanoVis::get_transfunc("default"));
2141	hmPtr->setVisible(true);
2142	hmPtr->setLineContourVisible(true);
2143	NanoVis::grid->setVisible(true);
2144	NanoVis::heightMap.push_back(hmPtr);
2145	return TCL_OK;
2146	}
2147
2148	static int
2149	HeightMapTransFuncOp(ClientData cdata, Tcl_Interp *interp, int objc,
2150	Tcl_Obj const objv)
2151	{
2152	const char *name;
2153	name = Tcl_GetString(objv[2]);
2154	TransferFunction *tf;
2155	tf = NanoVis::get_transfunc(name);
2156	if (tf == NULL) {
2157	Tcl_AppendResult(interp, "transfer function \"", name,
2158	"\" is not defined", (char*)NULL);
2159	return TCL_ERROR;
2160	}
2161	vector<HeightMap *> imap;
2162	if (GetHeightMaps(interp, objc - 3, objv + 3, &imap) != TCL_OK) {
2163	return TCL_ERROR;
2164	}
2165	vector<HeightMap *>::iterator iter;
2166	for (iter = imap.begin(); iter != imap.end(); iter++) {
2167	(*iter)->setColorMap(tf);
2168	}
2169	return TCL_OK;
2170	}
2171
2172	static Rappture::CmdSpec heightMapOps[] = {
2173	{"create", 2, HeightMapCreateOp, 9, 9,
2174	"xmin ymin xmax ymax xnum ynum values",},
2175	{"cull", 2, HeightMapCullOp, 3, 3, "mode",},
2176	{"data", 1, HeightMapDataOp, 3, 0, "oper ?args?",},
2177	{"legend", 2, HeightMapLegendOp, 5, 5, "index width height",},
2178	{"linecontour", 2, HeightMapLineContourOp, 2, 0, "oper ?args?",},
2179	{"polygon", 1, HeightMapPolygonOp, 3, 3, "mode",},
2180	{"shading", 1, HeightMapShadingOp, 3, 3, "model",},
2181	{"test", 2, HeightMapTestOp, 2, 2, "",},
2182	{"transfunc", 2, HeightMapTransFuncOp, 3, 0, "name ?indices?",},
2183	};
2184	static int nHeightMapOps = NumCmdSpecs(heightMapOps);
2185
2186	static int
2187	HeightMapCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
2188	{
2189	Tcl_ObjCmdProc *proc;
2190
2191	proc = Rappture::GetOpFromObj(interp, nHeightMapOps, heightMapOps,
2192	Rappture::CMDSPEC_ARG1, objc, objv, 0);
2193	if (proc == NULL) {
2194	return TCL_ERROR;
2195	}
2196	return (*proc) (cdata, interp, objc, objv);
2197	}
2198
2199	static int
2200	GridAxisColorOp(ClientData cdata, Tcl_Interp *interp, int objc,
2201	Tcl_Obj const objv)
2202	{
2203	float r, g, b, a;
2204	if ((GetFloatFromObj(interp, objv[2], &r) != TCL_OK) \|\|
2205	(GetFloatFromObj(interp, objv[3], &g) != TCL_OK) \|\|
2206	(GetFloatFromObj(interp, objv[4], &b) != TCL_OK)) {
2207	return TCL_ERROR;
2208	}
2209	a = 1.0f;
2210	if ((objc == 6) && (GetFloatFromObj(interp, objv[5], &a) != TCL_OK)) {
2211	return TCL_ERROR;
2212	}
2213	if (NanoVis::grid) {
2214	NanoVis::grid->setAxisColor(r, g, b, a);
2215	}
2216	return TCL_OK;
2217	}
2218
2219	static int
2220	GridAxisNameOp(ClientData cdata, Tcl_Interp *interp, int objc,
2221	Tcl_Obj const objv)
2222	{
2223	int axis;
2224	if (GetAxisFromObj(interp, objv[2], &axis) != TCL_OK) {
2225	return TCL_ERROR;
2226	}
2227	if (NanoVis::grid != NULL) {
2228	Axis *axisPtr;
2229
2230	axisPtr = NULL; /* Suppress compiler warning. */
2231	switch (axis) {
2232	case 0: axisPtr = &NanoVis::grid->xAxis; break;
2233	case 1: axisPtr = &NanoVis::grid->yAxis; break;
2234	case 2: axisPtr = &NanoVis::grid->zAxis; break;
2235	}
2236	axisPtr->SetName(Tcl_GetString(objv[3]));
2237	axisPtr->SetUnits(Tcl_GetString(objv[4]));
2238	}
2239	return TCL_OK;
2240	}
2241
2242	static int
2243	GridLineColorOp(ClientData cdata, Tcl_Interp *interp, int objc,
2244	Tcl_Obj const objv)
2245	{
2246	float r, g, b, a;
2247	if ((GetFloatFromObj(interp, objv[2], &r) != TCL_OK) \|\|
2248	(GetFloatFromObj(interp, objv[3], &g) != TCL_OK) \|\|
2249	(GetFloatFromObj(interp, objv[4], &b) != TCL_OK)) {
2250	return TCL_ERROR;
2251	}
2252	a = 1.0f;
2253	if ((objc == 6) && (GetFloatFromObj(interp, objv[5], &a) != TCL_OK)) {
2254	return TCL_ERROR;
2255	}
2256	if (NanoVis::grid) {
2257	NanoVis::grid->setLineColor(r, g, b, a);
2258	}
2259	return TCL_OK;
2260	}
2261
2262	static int
2263	GridVisibleOp(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
2264	{
2265	bool visible;
2266	if (GetBooleanFromObj(interp, objv[2], &visible) != TCL_OK) {
2267	return TCL_ERROR;
2268	}
2269	NanoVis::grid->setVisible(visible);
2270	return TCL_OK;
2271	}
2272
2273	static Rappture::CmdSpec gridOps[] = {
2274	{"axiscolor", 5, GridAxisColorOp, 5, 6, "r g b ?a?",},
2275	{"axisname", 5, GridAxisNameOp, 5, 5, "index title units",},
2276	{"linecolor", 7, GridLineColorOp, 5, 6, "r g b ?a?",},
2277	{"visible", 1, GridVisibleOp, 3, 3, "bool",},
2278	};
2279	static int nGridOps = NumCmdSpecs(gridOps);
2280
2281	static int
2282	GridCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
2283	{
2284	Tcl_ObjCmdProc *proc;
2285
2286	proc = Rappture::GetOpFromObj(interp, nGridOps, gridOps,
2287	Rappture::CMDSPEC_ARG1, objc, objv, 0);
2288	if (proc == NULL) {
2289	return TCL_ERROR;
2290	}
2291	return (*proc) (cdata, interp, objc, objv);
2292	}
2293
2294	static int
2295	AxisCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
2296	{
2297	if (objc < 2) {
2298	Tcl_AppendResult(interp, "wrong # args: should be \"",
2299	Tcl_GetString(objv[0]), " option arg arg...\"", (char*)NULL);
2300	return TCL_ERROR;
2301	}
2302	const char *string = Tcl_GetString(objv[1]);
2303	char c = string[0];
2304	if ((c == 'v') && (strcmp(string, "visible") == 0)) {
2305	bool visible;
2306
2307	if (GetBooleanFromObj(interp, objv[2], &visible) != TCL_OK) {
2308	return TCL_ERROR;
2309	}
2310	NanoVis::axis_on = visible;
2311	} else {
2312	Tcl_AppendResult(interp, "bad axis option \"", string,
2313	"\": should be visible", (char*)NULL);
2314	return TCL_ERROR;
2315	}
2316	return TCL_OK;
2317	}
2318
2319	#if PLANE_CMD
2320	static int
2321	PlaneNewOp(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
2322	{
2323	fprintf(stderr, "load plane for 2D visualization command\n");
2324	int index, w, h;
2325	if (objc != 4) {
2326	Tcl_AppendResult(interp, "wrong # args: should be \"",
2327	Tcl_GetString(objv[0]), " plane_index w h \"", (char*)NULL);
2328	return TCL_ERROR;
2329	}
2330	if (Tcl_GetIntFromObj(interp, objv[1], &index) != TCL_OK) {
2331	return TCL_ERROR;
2332	}
2333	if (Tcl_GetIntFromObj(interp, objv[2], &w) != TCL_OK) {
2334	return TCL_ERROR;
2335	}
2336	if (Tcl_GetIntFromObj(interp, objv[3], &h) != TCL_OK) {
2337	return TCL_ERROR;
2338	}
2339
2340	//Now read wh4 bytes. The server expects the plane to be a stream of
2341	//floats
2342	char* tmp = new char[int(whsizeof(float))];
2343	if (tmp == NULL) {
2344	Tcl_AppendResult(interp, "can't allocate stream data", (char *)NULL);
2345	return TCL_ERROR;
2346	}
2347	bzero(tmp, wh4);
2348	int status = read(0, tmp, whsizeof(float));
2349	if (status <= 0) {
2350	exit(0); // Bail out on read error? Should log the
2351	// error and return a non-zero exit status.
2352	}
2353	plane[index] = new Texture2D(w, h, GL_FLOAT, GL_LINEAR, 1, (float*)tmp);
2354	delete[] tmp;
2355	return TCL_OK;
2356	}
2357
2358
2359	static int
2360	PlaneLinkOp(ClientData cdata, Tcl_Interp *interp, int objc,
2361	Tcl_Obj const objv)
2362	{
2363	fprintf(stderr, "link the plane to the 2D renderer command\n");
2364
2365	int plane_index, tf_index;
2366
2367	if (objc != 3) {
2368	Tcl_AppendResult(interp, "wrong # args: should be \"",
2369	Tcl_GetString(objv[0]), " plane_index tf_index \"", (char*)NULL);
2370	return TCL_ERROR;
2371	}
2372	if (Tcl_GetIntFromObj(interp, objv[1], &plane_index) != TCL_OK) {
2373	return TCL_ERROR;
2374	}
2375	if (Tcl_GetIntFromObj(interp, objv[2], &tf_index) != TCL_OK) {
2376	return TCL_ERROR;
2377	}
2378	//plane_render->add_plane(plane[plane_index], tf[tf_index]);
2379	return TCL_OK;
2380	}
2381
2382	//Enable a 2D plane for render
2383	//The plane_index is the index mantained in the 2D plane renderer
2384	static int
2385	PlaneEnableOp(ClientData cdata, Tcl_Interp *interp, int objc,
2386	Tcl_Obj const objv)
2387	{
2388	fprintf(stderr,"enable a plane so the 2D renderer can render it command\n");
2389
2390	if (objc != 3) {
2391	Tcl_AppendResult(interp, "wrong # args: should be \"",
2392	Tcl_GetString(objv[0]), " plane_index mode \"", (char*)NULL);
2393	return TCL_ERROR;
2394	}
2395	int plane_index;
2396	if (Tcl_GetIntFromObj(interp, objv[1], &plane_index) != TCL_OK) {
2397	return TCL_ERROR;
2398	}
2399	int mode;
2400	if (Tcl_GetIntFromObj(interp, objv[2], &mode) != TCL_OK) {
2401	return TCL_ERROR;
2402	}
2403	if (mode == 0) {
2404	plane_index = -1;
2405	}
2406	plane_render->set_active_plane(plane_index);
2407	return TCL_OK;
2408	}
2409
2410	static Rappture::CmdSpec planeOps[] = {
2411	{"enable", 1, PlaneEnableOp, 4, 4, "planeIdx mode",},
2412	{"link", 1, PlaneLinkOp, 4, 4, "planeIdx transfuncIdx",},
2413	{"new", 1, PlaneNewOp, 5, 5, "planeIdx width height",},
2414	};
2415	static int nPlaneOps = NumCmdSpecs(planeOps);
2416
2417	static int
2418	PlaneCmd(ClientData cdata, Tcl_Interp interp, int objc, Tcl_Obj const *objv)
2419	{
2420	Tcl_ObjCmdProc *proc;
2421
2422	proc = Rappture::GetOpFromObj(interp, nPlaneOps, planeOps,
2423	Rappture::CMDSPEC_ARG1, objc, objv, 0);
2424	if (proc == NULL) {
2425	return TCL_ERROR;
2426	}
2427	return (*proc) (cdata, interp, objc, objv);
2428	}
2429
2430	#endif /PLANE_CMD/
2431
2432	/*
2433	* This command should be Tcl procedure instead of a C command. The reason
2434	* for this that 1) we are using a safe interpreter so we would need a master
2435	* interpreter to load the Tcl environment properly (including our "unirect2d"
2436	* procedure). And 2) the way nanovis is currently deployed doesn't make it
2437	* easy to add new directories for procedures, since it's loaded into /tmp.
2438	*
2439	* Ideally, the "unirect2d" proc would do a rundimentary parsing of the data
2440	* to verify the structure and then pass it to the appropiate Tcl command
2441	* (heightmap, volume, etc). Our C command always creates a heightmap.
2442	*/
2443	static int
2444	UniRect2dCmd(ClientData clientData, Tcl_Interp *interp, int objc,
2445	Tcl_Obj const objv)
2446	{
2447	int xNum, yNum, zNum;
2448	float xMin, yMin, xMax, yMax;
2449	float *zValues;
2450
2451	if ((objc & 0x01) == 0) {
2452	Tcl_AppendResult(interp, Tcl_GetString(objv[0]), ": ",
2453	"wrong number of arguments: should be key-value pairs",
2454	(char *)NULL);
2455	return TCL_ERROR;
2456	}
2457	zValues = NULL;
2458	xNum = yNum = zNum = 0;
2459	xMin = yMin = xMax = yMax = 0.0f;
2460	int i;
2461	for (i = 1; i < objc; i += 2) {
2462	const char *string;
2463
2464	string = Tcl_GetString(objv[i]);
2465	if (strcmp(string, "xmin") == 0) {
2466	if (GetFloatFromObj(interp, objv[i+1], &xMin) != TCL_OK) {
2467	return TCL_ERROR;
2468	}
2469	} else if (strcmp(string, "xmax") == 0) {
2470	if (GetFloatFromObj(interp, objv[i+1], &xMax) != TCL_OK) {
2471	return TCL_ERROR;
2472	}
2473	} else if (strcmp(string, "xnum") == 0) {
2474	if (Tcl_GetIntFromObj(interp, objv[i+1], &xNum) != TCL_OK) {
2475	return TCL_ERROR;
2476	}
2477	if (xNum <= 0) {
2478	Tcl_AppendResult(interp, "bad xnum value: must be > 0",
2479	(char *)NULL);
2480	return TCL_ERROR;
2481	}
2482	} else if (strcmp(string, "ymin") == 0) {
2483	if (GetFloatFromObj(interp, objv[i+1], &yMin) != TCL_OK) {
2484	return TCL_ERROR;
2485	}
2486	} else if (strcmp(string, "ymax") == 0) {
2487	if (GetFloatFromObj(interp, objv[i+1], &yMax) != TCL_OK) {
2488	return TCL_ERROR;
2489	}
2490	} else if (strcmp(string, "ynum") == 0) {
2491	if (Tcl_GetIntFromObj(interp, objv[i+1], &yNum) != TCL_OK) {
2492	return TCL_ERROR;
2493	}
2494	if (yNum <= 0) {
2495	Tcl_AppendResult(interp, "bad ynum value: must be > 0",
2496	(char *)NULL);
2497	return TCL_ERROR;
2498	}
2499	} else if (strcmp(string, "zvalues") == 0) {
2500	Tcl_Obj **zObj;
2501
2502	if (Tcl_ListObjGetElements(interp, objv[i+1], &zNum, &zObj)!= TCL_OK) {
2503	return TCL_ERROR;
2504	}
2505	int j;
2506	zValues = new float[zNum];
2507	for (j = 0; j < zNum; j++) {
2508	if (GetFloatFromObj(interp, zObj[j], zValues + j) != TCL_OK) {
2509	return TCL_ERROR;
2510	}
2511	}
2512	} else {
2513	Tcl_AppendResult(interp, "unknown key \"", string,
2514	"\": should be xmin, xmax, xnum, ymin, ymax, ynum, or zvalues",
2515	(char *)NULL);
2516	return TCL_ERROR;
2517	}
2518	}
2519	if (zValues == NULL) {
2520	Tcl_AppendResult(interp, "missing \"zvalues\" key", (char *)NULL);
2521	return TCL_ERROR;
2522	}
2523	if (zNum != (xNum * yNum)) {
2524	Tcl_AppendResult(interp, "wrong number of z values must be xnum*ynum",
2525	(char *)NULL);
2526	return TCL_ERROR;
2527	}
2528	HeightMap* hmPtr;
2529	hmPtr = new HeightMap();
2530	hmPtr->setHeight(xMin, yMin, xMax, yMax, xNum, yNum, zValues);
2531	hmPtr->setColorMap(NanoVis::get_transfunc("default"));
2532	hmPtr->setVisible(true);
2533	hmPtr->setLineContourVisible(true);
2534	NanoVis::heightMap.push_back(hmPtr);
2535	delete [] zValues;
2536	return TCL_OK;
2537	}
2538
2539
2540	void
2541	initTcl()
2542	{
2543	/*
2544	* Ideally the connection is authenticated by nanoscale. I still like the
2545	* idea of creating a non-safe master interpreter with a safe slave
2546	* interpreter. Alias all the nanovis commands in the slave. That way we
2547	* can still run Tcl code within nanovis. The eventual goal is to create
2548	* a test harness through the interpreter for nanovis.
2549	*/
2550	interp = Tcl_CreateInterp();
2551	Tcl_MakeSafe(interp);
2552
2553	Tcl_DStringInit(&cmdbuffer);
2554
2555	Tcl_CreateObjCommand(interp, "axis", AxisCmd, NULL, NULL);
2556	Tcl_CreateObjCommand(interp, "camera", CameraCmd, NULL, NULL);
2557	Tcl_CreateObjCommand(interp, "cutplane", CutplaneCmd, NULL, NULL);
2558	Tcl_CreateObjCommand(interp, "flow", FlowCmd, NULL, NULL);
2559	Tcl_CreateObjCommand(interp, "grid", GridCmd, NULL, NULL);
2560	Tcl_CreateObjCommand(interp, "heightmap", HeightMapCmd, NULL, NULL);
2561	Tcl_CreateObjCommand(interp, "legend", LegendCmd, NULL, NULL);
2562	Tcl_CreateObjCommand(interp, "screen", ScreenCmd, NULL, NULL);
2563	Tcl_CreateObjCommand(interp, "snapshot", SnapshotCmd, NULL, NULL);
2564	Tcl_CreateObjCommand(interp, "transfunc", TransfuncCmd, NULL, NULL);
2565	Tcl_CreateObjCommand(interp, "unirect2d", UniRect2dCmd, NULL, NULL);
2566	Tcl_CreateObjCommand(interp, "up", UpCmd, NULL, NULL);
2567	Tcl_CreateObjCommand(interp, "volume", VolumeCmd, NULL, NULL);
2568	#if __TEST_CODE__
2569	Tcl_CreateObjCommand(interp, "test", TestCmd, NULL, NULL);
2570	#endif
2571
2572	// create a default transfer function
2573	if (Tcl_Eval(interp, def_transfunc) != TCL_OK) {
2574	fprintf(stdin, "WARNING: bad default transfer function\n");
2575	fprintf(stdin, Tcl_GetStringResult(interp));
2576	}
2577	}
2578
2579
2580	void
2581	xinetd_listen()
2582	{
2583	int flags = fcntl(0, F_GETFL, 0);
2584	fcntl(0, F_SETFL, flags & ~O_NONBLOCK);
2585
2586	int status = TCL_OK;
2587	int npass = 0;
2588
2589	//
2590	// Read and execute as many commands as we can from stdin...
2591	//
2592	while (status == TCL_OK) {
2593	//
2594	// Read the next command from the buffer. First time through we
2595	// block here and wait if necessary until a command comes in.
2596	//
2597	// BE CAREFUL: Read only one command, up to a newline. The "volume
2598	// data follows" command needs to be able to read the data
2599	// immediately following the command, and we shouldn't consume it
2600	// here.
2601	//
2602	while (1) {
2603	char c = getchar();
2604	if (c <= 0) {
2605	if (npass == 0) {
2606	exit(0); // EOF -- we're done!
2607	} else {
2608	break;
2609	}
2610	}
2611	Tcl_DStringAppend(&cmdbuffer, &c, 1);
2612
2613	if (c=='\n' && Tcl_CommandComplete(Tcl_DStringValue(&cmdbuffer))) {
2614	break;
2615	}
2616	}
2617
2618	// no command? then we're done for now
2619	if (Tcl_DStringLength(&cmdbuffer) == 0) {
2620	break;
2621	}
2622
2623	// back to original flags during command evaluation...
2624	fcntl(0, F_SETFL, flags & ~O_NONBLOCK);
2625	status = Tcl_Eval(interp, Tcl_DStringValue(&cmdbuffer));
2626	Tcl_DStringSetLength(&cmdbuffer, 0);
2627
2628	// non-blocking for next read -- we might not get anything
2629	fcntl(0, F_SETFL, flags \| O_NONBLOCK);
2630	npass++;
2631	}
2632	fcntl(0, F_SETFL, flags);
2633
2634	if (status != TCL_OK) {
2635	const char *string;
2636	int nBytes;
2637	string = Tcl_GetStringFromObj(Tcl_GetObjResult(_interp), &nBytes);
2638
2639	struct iovec iov[3];
2640	iov[0].iov_base = "NanoVis Server Error: ";
2641	iov[0].iov_len = strlen(iov[0].iov_base);
2642	iov[1].iov_base = string;
2643	iov[1].iov_len = nBytes;
2644	iov[2].iov_base = '\n';
2645	iov[2].iov_len = 1;
2646	writev(0, iov, 3);
2647	return;
2648	}
2649
2650	//
2651	// This is now in "FlowCmd()":
2652	// Generate the latest frame and send it back to the client
2653	//
2654	/*
2655	if (NanoVis::licRenderer && NanoVis::licRenderer->isActivated())
2656	{
2657	NanoVis::licRenderer->convolve();
2658	}
2659
2660	if (NanoVis::particleRenderer && NanoVis::particleRenderer->isActivated())
2661	{
2662	NanoVis::particleRenderer->advect();
2663	}
2664	*/
2665
2666	NanoVis::update();
2667
2668	NanoVis::offscreen_buffer_capture(); //enable offscreen render
2669
2670	NanoVis::display();
2671
2672	// INSOO
2673	#ifdef XINETD
2674	NanoVis::read_screen();
2675	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
2676	#else
2677	NanoVis::display_offscreen_buffer(); //display the final rendering on screen
2678	NanoVis::read_screen();
2679	glutSwapBuffers();
2680	#endif
2681
2682	#if DO_RLE
2683	do_rle();
2684	int sizes[2] = { offsets_size*sizeof(offsets[0]), rle_size };
2685	fprintf(stderr, "Writing %d,%d\n", sizes[0], sizes[1]); fflush(stderr);
2686	write(0, &sizes, sizeof(sizes));
2687	write(0, offsets, offsets_size*sizeof(offsets[0]));
2688	write(0, rle, rle_size); //unsigned byte
2689	#else
2690	NanoVis::ppm_write("nv>image -bytes");
2691	#endif
2692	}

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