1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
---|
2 | /* |
---|
3 | * ---------------------------------------------------------------------- |
---|
4 | * NvParticleRenderer.cpp: particle system class |
---|
5 | * |
---|
6 | * ====================================================================== |
---|
7 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
---|
8 | * Purdue Rendering and Perceptualization Lab (PURPL) |
---|
9 | * |
---|
10 | * Copyright (c) 2004-2006 Purdue Research Foundation |
---|
11 | * |
---|
12 | * See the file "license.terms" for information on usage and |
---|
13 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
---|
14 | * ====================================================================== |
---|
15 | */ |
---|
16 | |
---|
17 | #include <stdio.h> |
---|
18 | #include <assert.h> |
---|
19 | #include <malloc.h> |
---|
20 | #include <string.h> |
---|
21 | #include <stdlib.h> |
---|
22 | |
---|
23 | #include <R2/R2FilePath.h> |
---|
24 | |
---|
25 | #include "NvParticleRenderer.h" |
---|
26 | #include "Trace.h" |
---|
27 | |
---|
28 | #define NV_32 |
---|
29 | |
---|
30 | NvParticleAdvectionShader* NvParticleRenderer::_advectionShader = NULL; |
---|
31 | |
---|
32 | class NvParticleAdvectionShaderInstance { |
---|
33 | public : |
---|
34 | NvParticleAdvectionShaderInstance() { |
---|
35 | } |
---|
36 | ~NvParticleAdvectionShaderInstance() { |
---|
37 | if (NvParticleRenderer::_advectionShader) { |
---|
38 | delete NvParticleRenderer::_advectionShader; |
---|
39 | } |
---|
40 | } |
---|
41 | }; |
---|
42 | NvParticleAdvectionShaderInstance shaderInstance; |
---|
43 | |
---|
44 | NvParticleRenderer::NvParticleRenderer(int w, int h, CGcontext context) : |
---|
45 | _particleSize(1.2), |
---|
46 | scale(1, 1, 1), |
---|
47 | origin(0, 0, 0), |
---|
48 | _activate(false) |
---|
49 | { |
---|
50 | psys_width = w; |
---|
51 | psys_height = h; |
---|
52 | |
---|
53 | psys_frame = 0; |
---|
54 | reborn = true; |
---|
55 | flip = true; |
---|
56 | |
---|
57 | _color.set(0.2, 0.2, 1.0, 1.0); |
---|
58 | max_life = 500; |
---|
59 | |
---|
60 | _slice_axis = 0; |
---|
61 | _slice_pos = 0.0; |
---|
62 | |
---|
63 | data = new Particle[w*h]; |
---|
64 | memset(data, 0, sizeof(Particle) * w * h); |
---|
65 | |
---|
66 | m_vertex_array = new RenderVertexArray(psys_width*psys_height, 3, GL_FLOAT); |
---|
67 | |
---|
68 | assert(CheckGL(AT)); |
---|
69 | |
---|
70 | glGenFramebuffersEXT(2, psys_fbo); |
---|
71 | glGenTextures(2, psys_tex); |
---|
72 | |
---|
73 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
74 | |
---|
75 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, psys_tex[0]); |
---|
76 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
77 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
78 | |
---|
79 | #ifdef NV_32 |
---|
80 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
---|
81 | psys_width, psys_height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
82 | #else |
---|
83 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_RGBA, psys_width, psys_height, |
---|
84 | 0, GL_RGBA, GL_FLOAT, NULL); |
---|
85 | #endif |
---|
86 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
87 | GL_TEXTURE_RECTANGLE_NV, psys_tex[0], 0); |
---|
88 | |
---|
89 | |
---|
90 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
91 | |
---|
92 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, psys_tex[1]); |
---|
93 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
94 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
95 | #ifdef NV_32 |
---|
96 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
---|
97 | psys_width, psys_height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
98 | #else |
---|
99 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_RGBA, psys_width, psys_height, |
---|
100 | 0, GL_RGBA, GL_FLOAT, NULL); |
---|
101 | #endif |
---|
102 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
103 | GL_TEXTURE_RECTANGLE_NV, psys_tex[1], 0); |
---|
104 | |
---|
105 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
106 | |
---|
107 | glGenTextures(1, &initPosTex); |
---|
108 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, initPosTex); |
---|
109 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
110 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
111 | #ifdef NV_32 |
---|
112 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
---|
113 | psys_width, psys_height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
114 | #else |
---|
115 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_RGBA, psys_width, |
---|
116 | psys_height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
117 | #endif |
---|
118 | |
---|
119 | CHECK_FRAMEBUFFER_STATUS(); |
---|
120 | |
---|
121 | //load related shaders |
---|
122 | /* |
---|
123 | m_g_context = context; |
---|
124 | |
---|
125 | m_pos_fprog = LoadCgSourceProgram(m_g_context, "update_pos.cg", |
---|
126 | CG_PROFILE_FP30, NULL); |
---|
127 | m_pos_timestep_param = cgGetNamedParameter(m_pos_fprog, "timestep"); |
---|
128 | m_vel_tex_param = cgGetNamedParameter(m_pos_fprog, "vel_tex"); |
---|
129 | m_pos_tex_param = cgGetNamedParameter(m_pos_fprog, "pos_tex"); |
---|
130 | m_scale_param = cgGetNamedParameter(m_pos_fprog, "scale"); |
---|
131 | cgGLSetTextureParameter(m_vel_tex_param, volume); |
---|
132 | cgGLSetParameter3f(m_scale_param, scale_x, scale_y, scale_z); |
---|
133 | */ |
---|
134 | if (_advectionShader == NULL) { |
---|
135 | _advectionShader = new NvParticleAdvectionShader(); |
---|
136 | } |
---|
137 | } |
---|
138 | |
---|
139 | NvParticleRenderer::~NvParticleRenderer() |
---|
140 | { |
---|
141 | glDeleteTextures(1, &initPosTex); |
---|
142 | |
---|
143 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
144 | glDeleteTextures(1, psys_tex); |
---|
145 | |
---|
146 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
147 | glDeleteTextures(1, psys_tex+1); |
---|
148 | |
---|
149 | glDeleteFramebuffersEXT(2, psys_fbo); |
---|
150 | |
---|
151 | delete m_vertex_array; |
---|
152 | delete [] data; |
---|
153 | } |
---|
154 | |
---|
155 | void NvParticleRenderer::initializeDataArray() |
---|
156 | { |
---|
157 | size_t n = psys_width * psys_height * 4; |
---|
158 | memset(data, 0, sizeof(float)* n); |
---|
159 | |
---|
160 | int index; |
---|
161 | bool particle; |
---|
162 | float* p = (float*) data; |
---|
163 | for (int i=0; i<psys_width; i++) { |
---|
164 | for (int j=0; j<psys_height; j++) { |
---|
165 | index = i + psys_height*j; |
---|
166 | particle = (rand() % 256) > 150; |
---|
167 | if(particle) { |
---|
168 | //assign any location (x,y,z) in range [0,1] |
---|
169 | switch (_slice_axis) { |
---|
170 | case 0 : |
---|
171 | p[4*index] = _slice_pos; |
---|
172 | p[4*index+1]= j/float(psys_height); |
---|
173 | p[4*index+2]= i/float(psys_width); |
---|
174 | break; |
---|
175 | case 1 : |
---|
176 | p[4*index]= j/float(psys_height); |
---|
177 | p[4*index+1] = _slice_pos; |
---|
178 | p[4*index+2]= i/float(psys_width); |
---|
179 | break; |
---|
180 | case 2 : |
---|
181 | p[4*index]= j/float(psys_height); |
---|
182 | p[4*index+1]= i/float(psys_width); |
---|
183 | p[4*index+2] = _slice_pos; |
---|
184 | break; |
---|
185 | default : |
---|
186 | p[4*index] = 0; |
---|
187 | p[4*index+1]= 0; |
---|
188 | p[4*index+2]= 0; |
---|
189 | p[4*index+3]= 0; |
---|
190 | } |
---|
191 | |
---|
192 | //shorter life span, quicker iterations |
---|
193 | p[4*index+3]= rand() / ((float) RAND_MAX) * 0.5 + 0.5f; |
---|
194 | } else { |
---|
195 | p[4*index] = 0; |
---|
196 | p[4*index+1]= 0; |
---|
197 | p[4*index+2]= 0; |
---|
198 | p[4*index+3]= 0; |
---|
199 | } |
---|
200 | } |
---|
201 | } |
---|
202 | } |
---|
203 | |
---|
204 | void NvParticleRenderer::initialize() |
---|
205 | { |
---|
206 | initializeDataArray(); |
---|
207 | |
---|
208 | //also store the data on main memory for next initialization |
---|
209 | //memcpy(data, p, psys_width*psys_height*sizeof(Particle)); |
---|
210 | |
---|
211 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, psys_tex[0]); |
---|
212 | // I need to find out why GL_FLOAT_RGBA32_NV doesn't work |
---|
213 | #ifdef NV_32 |
---|
214 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
---|
215 | psys_width, psys_height, 0, GL_RGBA, GL_FLOAT, (float*)data); |
---|
216 | #else |
---|
217 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_RGBA, psys_width, |
---|
218 | psys_height, 0, GL_RGBA, GL_FLOAT, (float*)data); |
---|
219 | #endif |
---|
220 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, 0); |
---|
221 | |
---|
222 | flip = true; |
---|
223 | reborn = false; |
---|
224 | |
---|
225 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, initPosTex); |
---|
226 | // I need to find out why GL_FLOAT_RGBA32_NV doesn't work |
---|
227 | #ifdef NV_32 |
---|
228 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
---|
229 | psys_width, psys_height, 0, GL_RGBA, GL_FLOAT, (float*)data); |
---|
230 | #else |
---|
231 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_RGBA, psys_width, psys_height, |
---|
232 | 0, GL_RGBA, GL_FLOAT, (float*)p); |
---|
233 | #endif |
---|
234 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, 0); |
---|
235 | |
---|
236 | TRACE("init particles\n"); |
---|
237 | } |
---|
238 | |
---|
239 | void NvParticleRenderer::reset() |
---|
240 | { |
---|
241 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, psys_tex[0]); |
---|
242 | #ifdef NV_32 |
---|
243 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
---|
244 | psys_width, psys_height, 0, GL_RGBA, GL_FLOAT, (float*)data); |
---|
245 | #else |
---|
246 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_RGBA, psys_width, psys_height, |
---|
247 | 0, GL_RGBA, GL_FLOAT, (float*)data); |
---|
248 | #endif |
---|
249 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, 0); |
---|
250 | flip = true; |
---|
251 | reborn = false; |
---|
252 | psys_frame = 0; |
---|
253 | } |
---|
254 | |
---|
255 | void |
---|
256 | NvParticleRenderer::advect() |
---|
257 | { |
---|
258 | if (reborn) |
---|
259 | reset(); |
---|
260 | |
---|
261 | glDisable(GL_BLEND); |
---|
262 | glDisable(GL_DEPTH_TEST); |
---|
263 | |
---|
264 | if (flip) { |
---|
265 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
266 | glEnable(GL_TEXTURE_RECTANGLE_NV); |
---|
267 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, psys_tex[0]); |
---|
268 | |
---|
269 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
270 | //glClear(GL_COLOR_BUFFER_BIT); |
---|
271 | |
---|
272 | glViewport(0, 0, psys_width, psys_height); |
---|
273 | glMatrixMode(GL_PROJECTION); |
---|
274 | glLoadIdentity(); |
---|
275 | //gluOrtho2D(0, psys_width, 0, psys_height); |
---|
276 | glOrtho(0, psys_width, 0, psys_height, -10.0f, 10.0f); |
---|
277 | glMatrixMode(GL_MODELVIEW); |
---|
278 | glLoadIdentity(); |
---|
279 | |
---|
280 | _advectionShader->bind(psys_tex[0], initPosTex); |
---|
281 | |
---|
282 | //cgGLBindProgram(m_pos_fprog); |
---|
283 | //cgGLSetParameter1f(m_pos_timestep_param, 0.05); |
---|
284 | //cgGLEnableTextureParameter(m_vel_tex_param); |
---|
285 | //cgGLSetTextureParameter(m_pos_tex_param, psys_tex[0]); |
---|
286 | //cgGLEnableTextureParameter(m_pos_tex_param); |
---|
287 | //cgGLEnableProfile(CG_PROFILE_FP30); |
---|
288 | |
---|
289 | draw_quad(psys_width, psys_height, psys_width, psys_height); |
---|
290 | |
---|
291 | //cgGLDisableProfile(CG_PROFILE_FP30); |
---|
292 | //cgGLDisableTextureParameter(m_vel_tex_param); |
---|
293 | //cgGLDisableTextureParameter(m_pos_tex_param); |
---|
294 | glDisable(GL_TEXTURE_RECTANGLE_NV); |
---|
295 | } else { |
---|
296 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
297 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, psys_tex[1]); |
---|
298 | |
---|
299 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
300 | //glClear(GL_COLOR_BUFFER_BIT); |
---|
301 | |
---|
302 | glViewport(0, 0, psys_width, psys_height); |
---|
303 | glMatrixMode(GL_PROJECTION); |
---|
304 | glLoadIdentity(); |
---|
305 | //gluOrtho2D(0, psys_width, 0, psys_height); |
---|
306 | glOrtho(0, psys_width, 0, psys_height, -10.0f, 10.0f); |
---|
307 | glMatrixMode(GL_MODELVIEW); |
---|
308 | glLoadIdentity(); |
---|
309 | |
---|
310 | _advectionShader->bind(psys_tex[1], initPosTex); |
---|
311 | |
---|
312 | //cgGLBindProgram(m_pos_fprog); |
---|
313 | //cgGLSetParameter1f(m_pos_timestep_param, 0.05); |
---|
314 | //cgGLEnableTextureParameter(m_vel_tex_param); |
---|
315 | //cgGLSetTextureParameter(m_pos_tex_param, psys_tex[1]); |
---|
316 | //cgGLEnableTextureParameter(m_pos_tex_param); |
---|
317 | //cgGLEnableProfile(CG_PROFILE_FP30); |
---|
318 | |
---|
319 | draw_quad(psys_width, psys_height, psys_width, psys_height); |
---|
320 | //draw_quad(psys_width, psys_height, 1.0f, 1.0f); |
---|
321 | |
---|
322 | //cgGLDisableProfile(CG_PROFILE_FP30); |
---|
323 | //cgGLDisableTextureParameter(m_vel_tex_param); |
---|
324 | //cgGLDisableTextureParameter(m_pos_tex_param); |
---|
325 | } |
---|
326 | |
---|
327 | _advectionShader->unbind(); |
---|
328 | |
---|
329 | //soft_read_verts(); |
---|
330 | |
---|
331 | update_vertex_buffer(); |
---|
332 | |
---|
333 | flip = (!flip); |
---|
334 | |
---|
335 | psys_frame++; |
---|
336 | if (psys_frame==max_life) { |
---|
337 | psys_frame=0; |
---|
338 | // reborn = true; |
---|
339 | } |
---|
340 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
341 | } |
---|
342 | |
---|
343 | void |
---|
344 | NvParticleRenderer::update_vertex_buffer() |
---|
345 | { |
---|
346 | m_vertex_array->Read(psys_width, psys_height); |
---|
347 | |
---|
348 | //m_vertex_array->LoadData(vert); //does not work?? |
---|
349 | //assert(glGetError()==0); |
---|
350 | } |
---|
351 | |
---|
352 | void |
---|
353 | NvParticleRenderer::render() |
---|
354 | { |
---|
355 | display_vertices(); |
---|
356 | } |
---|
357 | |
---|
358 | void |
---|
359 | NvParticleRenderer::draw_bounding_box(float x0, float y0, float z0, |
---|
360 | float x1, float y1, float z1, |
---|
361 | float r, float g, float b, |
---|
362 | float line_width) |
---|
363 | { |
---|
364 | glPushMatrix(); |
---|
365 | glEnable(GL_DEPTH_TEST); |
---|
366 | glDisable(GL_TEXTURE_2D); |
---|
367 | glEnable(GL_BLEND); |
---|
368 | |
---|
369 | glColor4d(r, g, b, 1.0); |
---|
370 | glLineWidth(line_width); |
---|
371 | |
---|
372 | glBegin(GL_LINE_LOOP); |
---|
373 | { |
---|
374 | glVertex3d(x0, y0, z0); |
---|
375 | glVertex3d(x1, y0, z0); |
---|
376 | glVertex3d(x1, y1, z0); |
---|
377 | glVertex3d(x0, y1, z0); |
---|
378 | } |
---|
379 | glEnd(); |
---|
380 | |
---|
381 | glBegin(GL_LINE_LOOP); |
---|
382 | { |
---|
383 | glVertex3d(x0, y0, z1); |
---|
384 | glVertex3d(x1, y0, z1); |
---|
385 | glVertex3d(x1, y1, z1); |
---|
386 | glVertex3d(x0, y1, z1); |
---|
387 | } |
---|
388 | glEnd(); |
---|
389 | |
---|
390 | glBegin(GL_LINE_LOOP); |
---|
391 | { |
---|
392 | glVertex3d(x0, y0, z0); |
---|
393 | glVertex3d(x0, y0, z1); |
---|
394 | glVertex3d(x0, y1, z1); |
---|
395 | glVertex3d(x0, y1, z0); |
---|
396 | } |
---|
397 | glEnd(); |
---|
398 | |
---|
399 | glBegin(GL_LINE_LOOP); |
---|
400 | { |
---|
401 | glVertex3d(x1, y0, z0); |
---|
402 | glVertex3d(x1, y0, z1); |
---|
403 | glVertex3d(x1, y1, z1); |
---|
404 | glVertex3d(x1, y1, z0); |
---|
405 | } |
---|
406 | glEnd(); |
---|
407 | |
---|
408 | glPopMatrix(); |
---|
409 | glDisable(GL_DEPTH_TEST); |
---|
410 | glDisable(GL_BLEND); |
---|
411 | glEnable(GL_TEXTURE_2D); |
---|
412 | } |
---|
413 | |
---|
414 | void |
---|
415 | NvParticleRenderer::display_vertices() |
---|
416 | { |
---|
417 | glDisable(GL_TEXTURE_2D); |
---|
418 | glDisable(GL_BLEND); |
---|
419 | glEnable(GL_DEPTH_TEST); |
---|
420 | |
---|
421 | glEnable(GL_COLOR_MATERIAL); |
---|
422 | |
---|
423 | glPushMatrix(); |
---|
424 | |
---|
425 | glTranslatef(origin.x, origin.y, origin.z); |
---|
426 | glScaled(scale.x, scale.y, scale.z); |
---|
427 | |
---|
428 | // TBD... |
---|
429 | /* |
---|
430 | draw_bounding_box( |
---|
431 | 0, 0, 0, |
---|
432 | 1, 1, 1, |
---|
433 | 1, 1, 1, 2); |
---|
434 | |
---|
435 | draw_bounding_box( |
---|
436 | 0, 0.5f / 4.5f, 0.5f / 4.5, |
---|
437 | 1, 4.0f / 4.5f, 4.0f / 4.5, |
---|
438 | 1, 0, 0, 2); |
---|
439 | |
---|
440 | draw_bounding_box( |
---|
441 | 1/3.0f, 1.0f / 4.5f, 0.5f / 4.5, |
---|
442 | 2/3.0f, 3.5f / 4.5f, 3.5f / 4.5, |
---|
443 | 1, 1, 0, 2); |
---|
444 | */ |
---|
445 | |
---|
446 | glPointSize(_particleSize); |
---|
447 | //glColor4f(.2,.2,.8,1.); |
---|
448 | glColor4f(_color.x, _color.y, _color.z, _color.w); |
---|
449 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
450 | m_vertex_array->SetPointer(0); |
---|
451 | glDrawArrays(GL_POINTS, 0, psys_width*psys_height); |
---|
452 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
453 | |
---|
454 | glPopMatrix(); |
---|
455 | |
---|
456 | glDisable(GL_DEPTH_TEST); |
---|
457 | |
---|
458 | //assert(glGetError()==0); |
---|
459 | } |
---|
460 | |
---|
461 | void |
---|
462 | NvParticleRenderer::setVectorField(unsigned int texID, const Vector3& ori, |
---|
463 | float scaleX, float scaleY, float scaleZ, |
---|
464 | float max) |
---|
465 | { |
---|
466 | origin = ori; |
---|
467 | scale.set(scaleX, scaleY, scaleZ); |
---|
468 | _advectionShader->setScale(scale); |
---|
469 | _advectionShader->setVelocityVolume(texID, max); |
---|
470 | } |
---|
471 | |
---|
472 | void NvParticleRenderer::setAxis(int axis) |
---|
473 | { |
---|
474 | _slice_axis = axis; |
---|
475 | initializeDataArray(); |
---|
476 | } |
---|
477 | |
---|
478 | void NvParticleRenderer::setPos(float pos) |
---|
479 | { |
---|
480 | _slice_pos = pos; |
---|
481 | initializeDataArray(); |
---|
482 | } |
---|