1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
---|
2 | /* |
---|
3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
---|
4 | * |
---|
5 | */ |
---|
6 | #include <stdlib.h> |
---|
7 | #include <stdio.h> |
---|
8 | |
---|
9 | #include <GL/glew.h> |
---|
10 | #include <GL/gl.h> |
---|
11 | |
---|
12 | #include <util/Fonts.h> |
---|
13 | #include <vrmath/Color4f.h> |
---|
14 | |
---|
15 | #include "Grid.h" |
---|
16 | #include "Trace.h" |
---|
17 | |
---|
18 | using namespace nv; |
---|
19 | using namespace nv::util; |
---|
20 | |
---|
21 | #define NUMDIGITS 6 |
---|
22 | #define TICK_LENGTH 0.05 |
---|
23 | #define LABEL_OFFSET 0.06 |
---|
24 | #define TITLE_OFFSET 0.2 |
---|
25 | |
---|
26 | Grid::Grid() : |
---|
27 | xAxis("X"), |
---|
28 | yAxis("Y"), |
---|
29 | zAxis("Z"), |
---|
30 | _axisColor(1.0f, 1.0f, 1.0f, 1.0f), |
---|
31 | _majorColor(1.0f, 1.0f, 1.0f, 1.0f), |
---|
32 | _minorColor(0.5f, 0.5f, 0.5f, 1.0f), |
---|
33 | _font(NULL), |
---|
34 | _visible(false) |
---|
35 | { |
---|
36 | } |
---|
37 | |
---|
38 | Grid::~Grid() |
---|
39 | { |
---|
40 | } |
---|
41 | |
---|
42 | void Grid::getBounds(vrmath::Vector3f& bboxMin, vrmath::Vector3f& bboxMax) const |
---|
43 | { |
---|
44 | bboxMin.set(xAxis.min(), yAxis.min(), zAxis.min()); |
---|
45 | bboxMax.set(xAxis.max(), yAxis.max(), zAxis.max()); |
---|
46 | } |
---|
47 | |
---|
48 | void Grid::render() |
---|
49 | { |
---|
50 | if (!isVisible()) |
---|
51 | return; |
---|
52 | |
---|
53 | glPushAttrib(GL_ENABLE_BIT); |
---|
54 | |
---|
55 | glEnable(GL_DEPTH_TEST); |
---|
56 | glDisable(GL_TEXTURE_2D); |
---|
57 | #ifdef notdef |
---|
58 | glEnable(GL_BLEND); |
---|
59 | glEnable(GL_LINE_SMOOTH); |
---|
60 | #else |
---|
61 | glDisable(GL_BLEND); |
---|
62 | #endif |
---|
63 | |
---|
64 | glMatrixMode(GL_MODELVIEW); |
---|
65 | glPushMatrix(); |
---|
66 | |
---|
67 | #ifdef USE_WORLD_COORDS |
---|
68 | double xLen = xAxis.length(); |
---|
69 | double yLen = yAxis.length(); |
---|
70 | double zLen = zAxis.length(); |
---|
71 | double avgLen = 0.; |
---|
72 | double denom = 0.; |
---|
73 | if (xLen > 0.0) { |
---|
74 | avgLen += xLen; |
---|
75 | denom += 1.0; |
---|
76 | } |
---|
77 | if (yLen > 0.0) { |
---|
78 | avgLen += yLen; |
---|
79 | denom += 1.0; |
---|
80 | } |
---|
81 | if (zLen > 0.0) { |
---|
82 | avgLen += zLen; |
---|
83 | denom += 1.0; |
---|
84 | } |
---|
85 | if (denom > 0.0) { |
---|
86 | avgLen /= denom; |
---|
87 | } else { |
---|
88 | avgLen = 1.0; |
---|
89 | } |
---|
90 | float xTickLen = (TICK_LENGTH * avgLen) / xLen; |
---|
91 | float yTickLen = (TICK_LENGTH * avgLen) / yLen; |
---|
92 | float zTickLen = (TICK_LENGTH * avgLen) / zLen; |
---|
93 | float xLabelOfs = (LABEL_OFFSET * avgLen) / xLen; |
---|
94 | //float yLabelOfs = (LABEL_OFFSET * avgLen) / yLen; |
---|
95 | float zLabelOfs = (LABEL_OFFSET * avgLen) / zLen; |
---|
96 | float xTitleOfs = (TITLE_OFFSET * avgLen) / xLen; |
---|
97 | float yTitleOfs = (TITLE_OFFSET * avgLen) / yLen; |
---|
98 | float zTitleOfs = (TITLE_OFFSET * avgLen) / zLen; |
---|
99 | |
---|
100 | glTranslated(xAxis.min(), yAxis.min(), zAxis.min()); |
---|
101 | glScaled(xLen, yLen, zLen); |
---|
102 | #else |
---|
103 | double xDataRange = xAxis.dataMax() - xAxis.dataMin(); |
---|
104 | double yDataRange = yAxis.dataMax() - yAxis.dataMin(); |
---|
105 | double zDataRange = zAxis.dataMax() - zAxis.dataMin(); |
---|
106 | |
---|
107 | double paspectX = 1.0f; |
---|
108 | double paspectY = yDataRange / xDataRange; |
---|
109 | double paspectZ = zDataRange / xDataRange; |
---|
110 | |
---|
111 | double xscale = xAxis.length() / xDataRange; |
---|
112 | double yscale = yAxis.length() / xDataRange; |
---|
113 | double zscale = zAxis.length() / xDataRange; |
---|
114 | |
---|
115 | double xoffset = (xAxis.min() - xAxis.dataMin()) / xAxis.length(); |
---|
116 | double yoffset = (yAxis.min() - yAxis.dataMin()) / yAxis.length(); |
---|
117 | double zoffset = (zAxis.min() - zAxis.dataMin()) / zAxis.length(); |
---|
118 | |
---|
119 | float xTickLen = TICK_LENGTH; |
---|
120 | float yTickLen = TICK_LENGTH; |
---|
121 | float zTickLen = TICK_LENGTH; |
---|
122 | float xLabelOfs = LABEL_OFFSET; |
---|
123 | //float yLabelOfs = LABEL_OFFSET; |
---|
124 | float zLabelOfs = LABEL_OFFSET; |
---|
125 | float xTitleOfs = TITLE_OFFSET; |
---|
126 | float yTitleOfs = TITLE_OFFSET; |
---|
127 | float zTitleOfs = TITLE_OFFSET; |
---|
128 | |
---|
129 | TRACE("Axis lengths: %g %g %g", |
---|
130 | xAxis.length(), |
---|
131 | yAxis.length(), |
---|
132 | zAxis.length()); |
---|
133 | TRACE("Axis min/max: %g,%g %g,%g %g,%g", |
---|
134 | xAxis.min(), xAxis.max(), |
---|
135 | yAxis.min(), yAxis.max(), |
---|
136 | zAxis.min(), zAxis.max()); |
---|
137 | TRACE("Axis vmin/vmax: %g,%g %g,%g %g,%g", |
---|
138 | xAxis.dataMin(), xAxis.dataMax(), |
---|
139 | yAxis.dataMin(), yAxis.dataMax(), |
---|
140 | zAxis.dataMin(), zAxis.dataMax()); |
---|
141 | TRACE("paspect: %g %g %g", paspectX, paspectY, paspectZ); |
---|
142 | TRACE("scale: %g %g %g", xscale, yscale, zscale); |
---|
143 | |
---|
144 | glTranslatef(-0.5f * paspectX, -0.5f * paspectY, -0.5f * paspectZ); |
---|
145 | glScalef(xscale, yscale, zscale); |
---|
146 | glTranslatef(xoffset, yoffset, zoffset); |
---|
147 | #endif |
---|
148 | |
---|
149 | glLineWidth(2.0f); |
---|
150 | glColor4f(_axisColor.r, _axisColor.g, _axisColor.b, |
---|
151 | _axisColor.a); |
---|
152 | |
---|
153 | glBegin(GL_LINES); |
---|
154 | { |
---|
155 | glVertex3f(0.0f, 0.0f, 0.0f); |
---|
156 | glVertex3f(1.0f + xTickLen, 0.0f, 0.0f); |
---|
157 | glVertex3f(0.0f, 0.0f, 0.0f); |
---|
158 | glVertex3f(0.0f, 1.0f + yTickLen, 0.0f); |
---|
159 | glVertex3f(0.0f, 0.0f, 0.0f); |
---|
160 | glVertex3f(0.0f, 0.0f, 1.0f + zTickLen); |
---|
161 | } |
---|
162 | glEnd(); |
---|
163 | |
---|
164 | glLineWidth(1.0f); |
---|
165 | glColor4f(_majorColor.r, _majorColor.g, _majorColor.b, |
---|
166 | _majorColor.a); |
---|
167 | |
---|
168 | glBegin(GL_LINES); |
---|
169 | { |
---|
170 | Ticks::ConstIterator itr; |
---|
171 | for (itr = xAxis.firstMajor(); itr != xAxis.lastMajor(); ++itr) { |
---|
172 | float x = (float)xAxis.map(*itr); |
---|
173 | glVertex3f(x, 0.0f, 0.0f); |
---|
174 | glVertex3f(x, 1.0f, 0.0f); |
---|
175 | glVertex3f(x, 0.0f, 0.0f); |
---|
176 | glVertex3f(x, 0.0f, 1.0f + zTickLen); |
---|
177 | } |
---|
178 | for (itr = yAxis.firstMajor(); itr != yAxis.lastMajor(); ++itr) { |
---|
179 | float y = (float)yAxis.map(*itr); |
---|
180 | glVertex3f(0.0f, y, 0.0f); |
---|
181 | glVertex3f(1.0f + xTickLen, y, 0.0f); |
---|
182 | glVertex3f(0.0f, y, 0.0f); |
---|
183 | glVertex3f(0.0f, y, 1.0f); |
---|
184 | } |
---|
185 | for (itr = zAxis.firstMajor(); itr != zAxis.lastMajor(); ++itr) { |
---|
186 | float z = (float)zAxis.map(*itr); |
---|
187 | glVertex3f(0.0f, 0.0f, z); |
---|
188 | glVertex3f(0.0f, 1.0f, z); |
---|
189 | glVertex3f(0.0f, 0.0f, z); |
---|
190 | glVertex3f(1.0f + xTickLen, 0.0f, z); |
---|
191 | } |
---|
192 | } |
---|
193 | glEnd(); |
---|
194 | |
---|
195 | // Set minor line color |
---|
196 | glColor4f(_minorColor.r, _minorColor.g, _minorColor.b, |
---|
197 | _minorColor.a); |
---|
198 | |
---|
199 | glBegin(GL_LINES); |
---|
200 | { |
---|
201 | Ticks::ConstIterator itr; |
---|
202 | for (itr = xAxis.firstMinor(); itr != xAxis.lastMinor(); ++itr) { |
---|
203 | float x = (float)xAxis.map(*itr); |
---|
204 | glVertex3f(x, 0.0f, 0.0f); |
---|
205 | glVertex3f(x, 1.0f, 0.0f); |
---|
206 | glVertex3f(x, 0.0f, 0.0f); |
---|
207 | glVertex3f(x, 0.0f, 1.0f); |
---|
208 | } |
---|
209 | for (itr = yAxis.firstMinor(); itr != yAxis.lastMinor(); ++itr) { |
---|
210 | float y = (float)yAxis.map(*itr); |
---|
211 | glVertex3f(0.0f, y, 0.0f); |
---|
212 | glVertex3f(1.0f, y, 0.0f); |
---|
213 | glVertex3f(0.0f, y, 0.0f); |
---|
214 | glVertex3f(0.0f, y, 1.0f); |
---|
215 | } |
---|
216 | for (itr = zAxis.firstMinor(); itr != zAxis.lastMinor(); ++itr) { |
---|
217 | float z = (float)zAxis.map(*itr); |
---|
218 | glVertex3f(0.0f, 0.0f, z); |
---|
219 | glVertex3f(0.0f, 1.0f, z); |
---|
220 | glVertex3f(0.0f, 0.0f, z); |
---|
221 | glVertex3f(1.0f, 0.0f, z); |
---|
222 | } |
---|
223 | } |
---|
224 | glEnd(); |
---|
225 | |
---|
226 | if (_font != NULL) { |
---|
227 | double mv[16], prjm[16]; |
---|
228 | int viewport[4]; |
---|
229 | double wx, wy, wz; |
---|
230 | |
---|
231 | glGetDoublev(GL_MODELVIEW_MATRIX, mv); |
---|
232 | glGetDoublev(GL_PROJECTION_MATRIX, prjm); |
---|
233 | glGetIntegerv(GL_VIEWPORT, viewport); |
---|
234 | |
---|
235 | _font->begin(); |
---|
236 | |
---|
237 | glColor4f(_axisColor.r, _axisColor.g, _axisColor.b, |
---|
238 | _axisColor.a); |
---|
239 | |
---|
240 | if (gluProject(1.0 + xTitleOfs, 0.0, 0.0, |
---|
241 | mv, prjm, viewport, |
---|
242 | &wx, &wy, &wz) && |
---|
243 | wz >= 0.0 && wz <= 1.0) { |
---|
244 | glLoadIdentity(); |
---|
245 | glTranslatef((int) wx, viewport[3] - (int) wy, 0); |
---|
246 | const char *title = xAxis.title(); |
---|
247 | if (title == NULL) { |
---|
248 | title = "???"; |
---|
249 | } |
---|
250 | _font->draw(title); |
---|
251 | } |
---|
252 | |
---|
253 | if (gluProject(0.0, 1.0 + yTitleOfs, 0.0, |
---|
254 | mv, prjm, viewport, |
---|
255 | &wx, &wy, &wz) && |
---|
256 | wz >= 0.0 && wz <= 1.0) { |
---|
257 | glLoadIdentity(); |
---|
258 | glTranslatef((int) wx, viewport[3] - (int)wy, 0); |
---|
259 | const char *title = yAxis.title(); |
---|
260 | if (title == NULL) { |
---|
261 | title = "???"; |
---|
262 | } |
---|
263 | _font->draw(title); |
---|
264 | } |
---|
265 | |
---|
266 | if (gluProject(0.0, 0.0, 1.0 + zTitleOfs, |
---|
267 | mv, prjm, viewport, |
---|
268 | &wx, &wy, &wz) && |
---|
269 | wz >= 0.0 && wz <= 1.0) { |
---|
270 | glLoadIdentity(); |
---|
271 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
---|
272 | const char *title = zAxis.title(); |
---|
273 | if (title == NULL) { |
---|
274 | title = "???"; |
---|
275 | } |
---|
276 | _font->draw(title); |
---|
277 | } |
---|
278 | |
---|
279 | glColor4f(_majorColor.r, _majorColor.g, _majorColor.b, |
---|
280 | _majorColor.a); |
---|
281 | |
---|
282 | Ticks::ConstIterator itr; |
---|
283 | for (itr = xAxis.firstMajor(); itr != xAxis.lastMajor(); ++itr) { |
---|
284 | float x = (float)xAxis.map(*itr); |
---|
285 | if (gluProject(x, 0.0f, 1.0 + zLabelOfs, |
---|
286 | mv, prjm, viewport, |
---|
287 | &wx, &wy, &wz) && |
---|
288 | wz >= 0.0 && wz <= 1.0) { |
---|
289 | char buff[20]; |
---|
290 | glLoadIdentity(); |
---|
291 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
---|
292 | sprintf(buff, "%.*g", NUMDIGITS, *itr); |
---|
293 | _font->draw(buff); |
---|
294 | } |
---|
295 | } |
---|
296 | for (itr = yAxis.firstMajor(); itr != yAxis.lastMajor(); ++itr) { |
---|
297 | float y = (float)yAxis.map(*itr); |
---|
298 | if (gluProject(1.0 + xLabelOfs, y, 0.0f, |
---|
299 | mv, prjm, viewport, |
---|
300 | &wx, &wy, &wz) && |
---|
301 | wz >= 0.0 && wz <= 1.0) { |
---|
302 | char buff[20]; |
---|
303 | glLoadIdentity(); |
---|
304 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
---|
305 | sprintf(buff, "%.*g", NUMDIGITS, *itr); |
---|
306 | _font->draw(buff); |
---|
307 | } |
---|
308 | } |
---|
309 | for (itr = zAxis.firstMajor(); itr != zAxis.lastMajor(); ++itr) { |
---|
310 | float z = (float)zAxis.map(*itr); |
---|
311 | if (gluProject(1.0 + xLabelOfs, 0.0f, z, |
---|
312 | mv, prjm, viewport, |
---|
313 | &wx, &wy, &wz) && |
---|
314 | wz >= 0.0 && wz <= 1.0) { |
---|
315 | char buff[20]; |
---|
316 | glLoadIdentity(); |
---|
317 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
---|
318 | sprintf(buff, "%.*g", NUMDIGITS, *itr); |
---|
319 | _font->draw(buff); |
---|
320 | } |
---|
321 | } |
---|
322 | _font->end(); |
---|
323 | }; |
---|
324 | |
---|
325 | glPopMatrix(); |
---|
326 | glPopAttrib(); |
---|
327 | } |
---|
328 | |
---|
329 | void Grid::setFont(Fonts *font) |
---|
330 | { |
---|
331 | _font = font; |
---|
332 | } |
---|
333 | |
---|