Eigene Dateien/Vis/src/VVolumeRenderer.cpp

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00001 #include "VVolumeRenderer.h"
00002 #include "glew.h"
00003 
00004 VVolumeRenderer::VVolumeRenderer() : 
00005                                                                         m_ProgramLoaded(false), 
00006                                                                         m_TransferFunctionHandle(0),
00007                                                                         m_TransferFunction2DHandle(0),
00008                                                                         m_FrontFaceTexture(NULL), 
00009                                                                         m_BackFaceTexture(NULL), 
00010                                                                         m_WorldFrontFaceTexture(NULL), 
00011                                                                         m_WorldBackFaceTexture(NULL), 
00012                                                                         m_ProxyGeometryDisplayListHandle(0),
00013                                                                         m_tf_activated(0),
00014                                                                         swmip(this),
00015                                                                         swmiptf(this),
00016                                                                         swmiptf2d(this),
00017                                                                         swdvr(this),
00018                                                                         swdvrtf(this),
00019                                                                         swdvrtf2d(this),
00020                                                                         swdvrbtf(this),
00021                                                                         swdvrbtftf(this),
00022                                                                         swdvrbtftf2d(this),
00023                                                                         swdvrcombphong(this),
00024                                                                         swdvrcombphongcont(this),
00025                                                                         swdvrcombphongshadow(this),
00026                                                                         swdvrcombphongcontshadow(this),
00027                                                                         swdvrcombphongt2f(this),
00028                                                                         swdvrcombphongcontt2f(this),
00029                                                                         swdvrcombphongshadowt2f(this),
00030                                                                         swdvrcombphongcontshadowt2f(this),
00031 
00032                                                                         swdvrcombtoon(this),
00033                                                                         swdvrcombtooncont(this),
00034                                                                         swdvrcombtoonshadow(this),
00035                                                                         swdvrcombtooncontshadow(this),
00036                                                                         swdvrcombtoon2f(this),
00037                                                                         swdvrcombtooncont2f(this),
00038                                                                         swdvrcombtoonshadow2f(this),
00039                                                                         swdvrcombtooncontshadow2f(this),
00040 
00041                                                                         swdvrcombmetal(this),
00042                                                                         swdvrcombmetalcont(this),
00043                                                                         swdvrcombmetalshadow(this),
00044                                                                         swdvrcombmetalcontshadow(this),
00045                                                                         swdvrcombmetal2f(this),
00046                                                                         swdvrcombmetalcont2f(this),
00047                                                                         swdvrcombmetalshadow2f(this),
00048                                                                         swdvrcombmetalcontshadow2f(this),
00049                                                                         swcurvature(this),
00050                                                                         m_ContourHandle(0),
00051                                                                         m_thresholdH(0.5f),
00052                                                                         m_thresholdL(0.5f)
00053 {
00054         m_Volume = NULL;
00055         VVector eye(0.0f, 0.0f, -1.0f);
00056         VVector view(0.0f, 0.0f, 1.0f);
00057         VVector up(0.0f, 1.0f, 0.0f);
00058 
00059         m_VolumeSize[0] = 1.0f;
00060         m_VolumeSize[1] = 1.0f;
00061         m_VolumeSize[2] = 1.0f;
00062         m_VolumeSize[3] = 1.0f;
00063 
00064         m_Camera.lookInDirection(eye, view, up);
00065 
00066         m_renderMode = MIP;
00067         m_lightMode = PHONG;
00068 
00069         m_shadows = false;
00070         m_contours = false;
00071 
00072         m_Raycast = &swmip;
00073 
00074         maxSize = 0.5f;
00075         xsize = 1.0f;
00076         ysize = 1.0f;
00077         zsize = 1.0f;
00078 
00079         m_ClipPlanes[LEFT_RIGHT] = 0.0f;
00080         m_ClipPlanes[RIGHT_LEFT] = 1.0f;
00081         m_ClipPlanes[BOTTOM_TOP] = 0.0f;
00082         m_ClipPlanes[TOP_BOTTOM] = 1.0f;
00083         m_ClipPlanes[FRONT_BACK] = 0.0f;
00084         m_ClipPlanes[BACK_FRONT] = 1.0f;
00085 
00086         float xneg = m_ClipPlanes[LEFT_RIGHT];
00087         float xpos = m_ClipPlanes[RIGHT_LEFT];
00088 
00089         float yneg = m_ClipPlanes[BOTTOM_TOP];
00090         float ypos = m_ClipPlanes[TOP_BOTTOM];
00091 
00092         float zneg = m_ClipPlanes[FRONT_BACK];
00093         float zpos = m_ClipPlanes[BACK_FRONT];
00094 
00095         m_ClipPlaneObj[LEFT_RIGHT] = VPlane(VVector(-1.0f, 0.0f, 0.0f), VVector((-xsize) +  (xneg * xsize/0.5f), 0.0f, 0.0f));
00096         m_ClipPlaneObj[RIGHT_LEFT] = VPlane(VVector(1.0f, 0.0f, 0.0f), VVector(xsize - ((1.0f - xpos) * xsize/0.5f), 0.0f, 0.0f));
00097 
00098         m_ClipPlaneObj[BOTTOM_TOP] = VPlane(VVector(0.0f, -1.0f, 0.0f), VVector(0.0f, (-ysize) +  (yneg * ysize/0.5f), 0.0f));
00099         m_ClipPlaneObj[TOP_BOTTOM] = VPlane(VVector(0.0f, 1.0f, 0.0f), VVector(0.0f, ysize - ((1.0f - ypos) * ysize/0.5f), 0.0f));
00100 
00101         m_ClipPlaneObj[FRONT_BACK] = VPlane(VVector(0.0f, 0.0f, -1.0f), VVector(0.0f, 0.0f, (-zsize) +  (zneg * zsize/0.5f)));
00102         m_ClipPlaneObj[BACK_FRONT] = VPlane(VVector(0.0f, 0.0f, 1.0f), VVector(0.0f, 0.0f, zsize - ((1.0f - zpos) * zsize/0.5f)));
00103 
00104         m_updateDL = true;
00105         
00106         m_ClearColor[0] = 0.0f;
00107         m_ClearColor[1] = 0.0f;
00108         m_ClearColor[2] = 0.0f;
00109 
00110         m_LightDir[0] = 0.0f;
00111         m_LightDir[1] = 1.0f;
00112         m_LightDir[2] = 0.0f;
00113 
00114         m_Tex2WorldSpace.scale(VVector(2.0f, 2.0f, 2.0f));
00115         m_Tex2WorldSpace.translate(VVector(-0.5f, -0.5f, -0.5f));
00116 
00117         m_NoiseTex = new VImage();
00118         m_ToonTex = new VImage();
00119         m_MetalTex = new VImage();
00120 }
00121 
00122 
00123 VVolumeRenderer::VVolumeRenderer(VVolume * volume) :  
00124                 m_ProgramLoaded(false), 
00125                 m_TransferFunctionHandle(0),
00126                 m_TransferFunction2DHandle(0), 
00127                 m_FrontFaceTexture(NULL), 
00128                 m_BackFaceTexture(NULL), 
00129                 m_WorldFrontFaceTexture(NULL), 
00130                 m_WorldBackFaceTexture(NULL), 
00131                 m_ProxyGeometryDisplayListHandle(0),
00132                 swmip(this),
00133                 swmiptf(this),
00134                 swmiptf2d(this),
00135                 swdvr(this),
00136                 swdvrtf(this),
00137                 swdvrtf2d(this),
00138                 swdvrbtf(this),
00139                 swdvrbtftf(this),
00140                 swdvrbtftf2d(this),
00141                 swdvrcombphong(this),
00142                 swdvrcombphongcont(this),
00143                 swdvrcombphongshadow(this),
00144                 swdvrcombphongcontshadow(this),
00145                 swdvrcombphongt2f(this),
00146                 swdvrcombphongcontt2f(this),
00147                 swdvrcombphongshadowt2f(this),
00148                 swdvrcombphongcontshadowt2f(this),
00149                 swdvrcombtoon(this),
00150                 swdvrcombtooncont(this),
00151                 swdvrcombtoonshadow(this),
00152                 swdvrcombtooncontshadow(this),
00153                 swdvrcombtoon2f(this),
00154                 swdvrcombtooncont2f(this),
00155                 swdvrcombtoonshadow2f(this),
00156                 swdvrcombtooncontshadow2f(this),
00157                 swdvrcombmetal(this),
00158                 swdvrcombmetalcont(this),
00159                 swdvrcombmetalshadow(this),
00160                 swdvrcombmetalcontshadow(this),
00161                 swdvrcombmetal2f(this),
00162                 swdvrcombmetalcont2f(this),
00163                 swdvrcombmetalshadow2f(this),
00164                 swdvrcombmetalcontshadow2f(this),
00165                 swcurvature(this),
00166                 m_ContourHandle(0),
00167                 m_thresholdH(0.5f),
00168                 m_thresholdL(0.5f)
00169 {
00170         m_Volume = volume;
00171 
00172         VVector eye(0.0f, 0.0f, -1.0f);
00173         VVector view(0.0f, 0.0f, 1.0f);
00174         VVector up(0.0f, 1.0f, 0.0f);
00175         m_Camera.lookInDirection(eye, view, up);
00176 
00177         m_VolumeSize[0] = 1.0f;
00178         m_VolumeSize[1] = 1.0f;
00179         m_VolumeSize[2] = 1.0f;
00180         m_VolumeSize[3] = 1.0f;
00181 
00182         m_renderMode = MIP;
00183         m_lightMode = PHONG;
00184 
00185         m_shadows = false;
00186         m_contours = false;
00187 
00188         ShaderWrapperMIP sw(this);
00189         m_Raycast = &sw;
00190 
00191         maxSize = (m_Volume->getDimX() < m_Volume->getDimY()) ? (float)m_Volume->getDimY() : (float)m_Volume->getDimX();
00192         maxSize = (maxSize < m_Volume->getDimZ()) ? (float)m_Volume->getDimZ() : maxSize;
00193         xsize = (float)(m_Volume->getDimX())/(float)(2*maxSize);
00194         ysize = (float)(m_Volume->getDimY())/(float)(2*maxSize);
00195         zsize = (float)(m_Volume->getDimZ())/(float)(2*maxSize);
00196 
00197         m_ClipPlanes[LEFT_RIGHT] = 0.0f;
00198         m_ClipPlanes[RIGHT_LEFT] = 1.0f;
00199         m_ClipPlanes[BOTTOM_TOP] = 0.0f;
00200         m_ClipPlanes[TOP_BOTTOM] = 1.0f;
00201         m_ClipPlanes[FRONT_BACK] = 0.0f;
00202         m_ClipPlanes[BACK_FRONT] = 1.0f;
00203 
00204         float xneg = m_ClipPlanes[LEFT_RIGHT];
00205         float xpos = m_ClipPlanes[RIGHT_LEFT];
00206 
00207         float yneg = m_ClipPlanes[BOTTOM_TOP];
00208         float ypos = m_ClipPlanes[TOP_BOTTOM];
00209 
00210         float zneg = m_ClipPlanes[FRONT_BACK];
00211         float zpos = m_ClipPlanes[BACK_FRONT];
00212 
00213         m_ClipPlaneObj[LEFT_RIGHT] = VPlane(VVector(-1.0f, 0.0f, 0.0f), VVector((-xsize) +  (xneg * xsize/0.5f), 0.0f, 0.0f));
00214         m_ClipPlaneObj[RIGHT_LEFT] = VPlane(VVector(1.0f, 0.0f, 0.0f), VVector(xsize - ((1.0f - xpos) * xsize/0.5f), 0.0f, 0.0f));
00215 
00216         m_ClipPlaneObj[BOTTOM_TOP] = VPlane(VVector(0.0f, -1.0f, 0.0f), VVector(0.0f, (-ysize) +  (yneg * ysize/0.5f), 0.0f));
00217         m_ClipPlaneObj[TOP_BOTTOM] = VPlane(VVector(0.0f, 1.0f, 0.0f), VVector(0.0f, ysize - ((1.0f - ypos) * ysize/0.5f), 0.0f));
00218 
00219         m_ClipPlaneObj[FRONT_BACK] = VPlane(VVector(0.0f, 0.0f, -1.0f), VVector(0.0f, 0.0f, (-zsize) +  (zneg * zsize/0.5f)));
00220         m_ClipPlaneObj[BACK_FRONT] = VPlane(VVector(0.0f, 0.0f, 1.0f), VVector(0.0f, 0.0f, zsize - ((1.0f - zpos) * zsize/0.5f)));
00221 
00222         m_updateDL = true;
00223 
00224         m_ClearColor[0] = 0.0f;
00225         m_ClearColor[1] = 0.0f;
00226         m_ClearColor[2] = 0.0f;
00227 
00228         m_LightDir[0] = 0.0f;
00229         m_LightDir[1] = 1.0f;
00230         m_LightDir[2] = 0.0f;
00231 
00232         m_Tex2WorldSpace.scale(VVector(2.0f * xsize, 2.0f * ysize, 2.0f * zsize));
00233         m_Tex2WorldSpace.translate(VVector(-0.5f, -0.5f, -0.5f));
00234         
00235         m_NoiseTex = new VImage();
00236         m_ToonTex = new VImage();
00237         m_MetalTex = new VImage();
00238         
00239 }
00240 
00241 void VVolumeRenderer::setRenderMode(RenderMode rm )
00242 {
00243         m_renderMode = rm;
00244         
00245         if (rm == MIP && m_tf_activated==0)
00246         {
00247                 m_Raycast = &swmip;
00248 
00249         }else if (rm == MIP && m_tf_activated==1)
00250         {
00251                 
00252                 m_Raycast = &swmiptf;
00253 
00254         }else if (rm == MIP && m_tf_activated==2)
00255         {
00256                 m_Raycast = &swmiptf2d;
00257         }
00258 
00259         if (rm == DVR_FTB && m_tf_activated==0)
00260         {
00261                 m_Raycast = &swdvr;
00262 
00263         }else if (rm == DVR_FTB && m_tf_activated==1)
00264         {
00265                 m_Raycast = &swdvrtf;
00266 
00267         }else if (rm == DVR_FTB && m_tf_activated==2)
00268         {
00269                 m_Raycast = &swdvrtf2d;
00270         }
00271 
00272         if (rm == DVR_BTF && m_tf_activated==0)
00273         {
00274                 m_Raycast = &swdvrbtf;
00275 
00276         }else if (rm == DVR_BTF && m_tf_activated==1)
00277         {
00278                 m_Raycast = &swdvrbtftf;
00279 
00280         }else if (rm == DVR_BTF && m_tf_activated==2)
00281         {
00282                 m_Raycast = &swdvrbtftf2d;
00283         }
00284 
00285         
00286         //phong
00287         if (rm == COMB && m_lightMode == PHONG && !m_shadows && !m_contours)
00288         {
00289                 if(m_tf_activated==1)
00290                         m_Raycast = &swdvrcombphong;
00291                 else if(m_tf_activated==2)
00292                         m_Raycast = &swdvrcombphongt2f;
00293 
00294         }else if (rm == COMB && m_lightMode == PHONG && !m_shadows && m_contours)
00295         {
00296                 if(m_tf_activated==1)
00297                         m_Raycast = &swdvrcombphongcont;
00298                 else if(m_tf_activated==2)
00299                         m_Raycast = &swdvrcombphongcontt2f;
00300 
00301         }else if (rm == COMB && m_lightMode == PHONG && m_shadows && m_contours)
00302         {
00303                 if(m_tf_activated==1)
00304                         m_Raycast = &swdvrcombphongcontshadow;
00305                 else if(m_tf_activated==2)
00306                         m_Raycast = &swdvrcombphongcontshadowt2f;
00307 
00308         }else if (rm == COMB && m_lightMode == PHONG && m_shadows && !m_contours)
00309         {
00310                 if(m_tf_activated==1)
00311                         m_Raycast = &swdvrcombphongshadow;
00312                 else if(m_tf_activated==2)
00313                         m_Raycast = &swdvrcombphongshadowt2f;
00314         }
00315 
00316         // toon
00317         else if (rm == COMB && m_lightMode == TOON && !m_shadows && !m_contours)
00318         {
00319                 if(m_tf_activated==1)
00320                         m_Raycast = &swdvrcombtoon;
00321                 else if(m_tf_activated==2)
00322                         m_Raycast = &swdvrcombtoon2f;
00323 
00324         }else if (rm == COMB && m_lightMode == TOON && !m_shadows && m_contours)
00325         {
00326                 if(m_tf_activated==1)
00327                         m_Raycast = &swdvrcombtooncont;
00328                 else if(m_tf_activated==2)
00329                         m_Raycast = &swdvrcombtooncont2f;
00330 
00331         }else if (rm == COMB && m_lightMode == TOON && m_shadows && m_contours)
00332         {
00333                 if(m_tf_activated==1)
00334                         m_Raycast = &swdvrcombtooncontshadow;
00335                 else if(m_tf_activated==2)
00336                         m_Raycast = &swdvrcombtooncontshadow2f;
00337         
00338         }else if (rm == COMB && m_lightMode == TOON && m_shadows && !m_contours)
00339         {
00340                 if(m_tf_activated==1)
00341                         m_Raycast = &swdvrcombtoonshadow;
00342                 else if(m_tf_activated==2)
00343                         m_Raycast = &swdvrcombtoonshadow2f;
00344         }
00345 
00346         // metal
00347         else if (rm == COMB && m_lightMode == METAL && !m_shadows && !m_contours)
00348         {
00349                 if(m_tf_activated==1)
00350                         m_Raycast = &swdvrcombmetal;
00351                 else if(m_tf_activated==2)
00352                         m_Raycast = &swdvrcombmetal2f;
00353 
00354         }else if (rm == COMB && m_lightMode == METAL && !m_shadows && m_contours)
00355         {
00356                 if(m_tf_activated==1)
00357                         m_Raycast = &swdvrcombmetalcont;
00358                 else if(m_tf_activated==2)
00359                         m_Raycast = &swdvrcombmetalcont2f;
00360 
00361         }else if (rm == COMB && m_lightMode == METAL && m_shadows && m_contours)
00362         {
00363                 if(m_tf_activated==1)
00364                         m_Raycast = &swdvrcombmetalcontshadow;
00365                 else if(m_tf_activated==2)
00366                         m_Raycast = &swdvrcombmetalcontshadow2f;
00367 
00368         }else if (rm == COMB && m_lightMode == METAL && m_shadows && !m_contours)
00369         {
00370                 if(m_tf_activated==1)
00371                         m_Raycast = &swdvrcombmetalshadow;
00372                 else if(m_tf_activated==2)
00373                         m_Raycast = &swdvrcombmetalshadow2f;
00374         }
00375 
00376         if(rm == CURVATURE)
00377         {
00378                 m_Raycast = &swcurvature;
00379         }
00380 
00381 }
00382 
00383 void VVolumeRenderer::drawFrontFaces()
00384 {
00385         if(m_ProxyGeometryDisplayListHandle == 0)
00386         {
00387                 generateProxyGeometryDisplayList();
00388         }
00389         if(m_updateDL)
00390         {
00391                 generateProxyGeometryDisplayList();
00392         }
00393 
00394         m_WorldPosProgram.bind();
00395 
00396         m_Camera.updateProjMatrix();
00397         m_Camera.updateViewMatrix();
00398 
00399         glUniformMatrix4fv(m_WorldPosProgram.getUniformLocation("mModelMatrix"),1,false,m_Volume->getModelMatrix());
00400         glUniformMatrix4fv(m_WorldPosProgram.getUniformLocation("mViewMatrix"),1,false,m_Camera.getViewMatrix());
00401         glUniformMatrix4fv(m_WorldPosProgram.getUniformLocation("mProjectionMatrix"),1,false,m_Camera.getProjectionMatrix());
00402         glUniform4fv(m_WorldPosProgram.getUniformLocation("mVolumeSize"), 1, m_VolumeSize);
00403         m_FrontFaceTexture->bind();
00404 
00405         glEnable(GL_CULL_FACE);
00406         glCullFace(GL_BACK);
00407 
00408         glCallList(m_ProxyGeometryDisplayListHandle);
00409 
00410         GLenum glError = glGetError();
00411 
00412         if (glError != GL_NO_ERROR)
00413                 std::cout << "Error Rendering Proxy Geometry Front " << gluErrorString(glError) << std::endl;
00414 
00415         m_FrontFaceTexture->unbind();
00416 
00417         m_WorldPosProgram.release();
00418 
00419 
00420         //rendering world pos
00421 
00422         m_WorldWorldProgram.bind();
00423 
00424         glUniformMatrix4fv(m_WorldWorldProgram.getUniformLocation("mModelMatrix"),1,false,m_Volume->getModelMatrix());
00425         glUniformMatrix4fv(m_WorldWorldProgram.getUniformLocation("mViewMatrix"),1,false,m_Camera.getViewMatrix());
00426         glUniformMatrix4fv(m_WorldWorldProgram.getUniformLocation("mProjectionMatrix"),1,false,m_Camera.getProjectionMatrix());
00427         glUniform4fv(m_WorldWorldProgram.getUniformLocation("mVolumeSize"), 1, m_VolumeSize);
00428         m_WorldFrontFaceTexture->bind();
00429 
00430         glEnable(GL_CULL_FACE);
00431         glCullFace(GL_BACK);
00432 
00433         glCallList(m_ProxyGeometryDisplayListHandle);
00434 
00435         glError = glGetError();
00436 
00437         if (glError != GL_NO_ERROR)
00438                 std::cout << "Error Rendering Proxy Geometry Front " << gluErrorString(glError) << std::endl;
00439 
00440         m_WorldFrontFaceTexture->unbind();
00441 
00442         m_WorldWorldProgram.release();
00443 }
00444 
00445 void VVolumeRenderer::drawFrontFacesToSmallQuad()
00446 {
00447         m_WorldFrontFaceTexture->renderToLowerLeftQuad();
00448 }
00449 
00450 void VVolumeRenderer::drawBackFaces()
00451 {
00452 
00453         if(m_ProxyGeometryDisplayListHandle == 0)
00454         {
00455                 generateProxyGeometryDisplayList();
00456         }
00457         if(m_updateDL)
00458         {
00459                 generateProxyGeometryDisplayList();
00460         }
00461 
00462         m_WorldPosProgram.bind();
00463 
00464         m_Camera.updateProjMatrix();
00465         m_Camera.updateViewMatrix();
00466 
00467         glUniformMatrix4fv(m_WorldPosProgram.getUniformLocation("mModelMatrix"),1,false,m_Volume->getModelMatrix());
00468         glUniformMatrix4fv(m_WorldPosProgram.getUniformLocation("mViewMatrix"),1,false,m_Camera.getViewMatrix());
00469         glUniformMatrix4fv(m_WorldPosProgram.getUniformLocation("mProjectionMatrix"),1,false,m_Camera.getProjectionMatrix());
00470         glUniform4fv(m_WorldPosProgram.getUniformLocation("mVolumeSize"), 1, m_VolumeSize);
00471         //glUniform4f(m_WorldPosProgram.getUniformLocation("mVolumeSize"),m_VolumeSize[0],m_VolumeSize[1],m_VolumeSize[2],m_VolumeSize[3]);
00472         
00473         m_BackFaceTexture->bind();
00474 
00475         glEnable(GL_CULL_FACE);
00476         glCullFace(GL_FRONT);
00477 
00478         glCallList(m_ProxyGeometryDisplayListHandle);
00479 
00480         GLenum glError = glGetError();
00481 
00482         if (glError != GL_NO_ERROR)
00483                 std::cout << "Error Rendering Proxy Geometry Back " << gluErrorString(glError) << std::endl;
00484 
00485         m_BackFaceTexture->unbind();
00486 
00487         m_WorldPosProgram.release();
00488 
00489         //Rendering World Pos to texture
00490         m_WorldWorldProgram.bind();
00491 
00492         glUniformMatrix4fv(m_WorldWorldProgram.getUniformLocation("mModelMatrix"),1,false,m_Volume->getModelMatrix());
00493         glUniformMatrix4fv(m_WorldWorldProgram.getUniformLocation("mViewMatrix"),1,false,m_Camera.getViewMatrix());
00494         glUniformMatrix4fv(m_WorldWorldProgram.getUniformLocation("mProjectionMatrix"),1,false,m_Camera.getProjectionMatrix());
00495         glUniform4fv(m_WorldWorldProgram.getUniformLocation("mVolumeSize"), 1, m_VolumeSize);
00496         //glUniform4f(m_WorldPosProgram.getUniformLocation("mVolumeSize"),m_VolumeSize[0],m_VolumeSize[1],m_VolumeSize[2],m_VolumeSize[3]);
00497 
00498         m_WorldBackFaceTexture->bind();
00499 
00500         glEnable(GL_CULL_FACE);
00501         glCullFace(GL_FRONT);
00502 
00503         glCallList(m_ProxyGeometryDisplayListHandle);
00504 
00505         glError = glGetError();
00506 
00507         if (glError != GL_NO_ERROR)
00508                 std::cout << "Error Rendering Proxy Geometry Back " << gluErrorString(glError) << std::endl;
00509 
00510         m_WorldBackFaceTexture->unbind();
00511 
00512         m_WorldWorldProgram.release();
00513 }
00514 
00515 void VVolumeRenderer::drawBackFacesToSmallQuad()
00516 {
00517         m_WorldBackFaceTexture->renderToLowerRightQuad();
00518 }
00519 
00520 void VVolumeRenderer::draw()
00521 {
00522         if(m_ContourHandle == 0)
00523         {
00524                 initContourTexture();
00525         }
00526 
00527         m_Raycast->set();
00528 
00529         float fw = 662.0f / (float)m_Width;
00530         float fh = 662.0f / (float)m_Height;
00531 
00532         float w0 = 1.0f;
00533         float h0 = 1.0f;
00534         float aspect = ((float)m_Volume->getDimX()/(float)m_Volume->getDimZ());
00535 
00536         
00537 
00538         if (fw > fh)
00539         {
00540                 h0 /= fw;
00541                 h0 *= fh;
00542 
00543         }else
00544         {
00545                 w0 /= fh;
00546                 w0 *= fw;
00547         }
00548 
00549         
00550         glBegin(GL_QUADS);
00551         glTexCoord2f(0.0f, 0.0f);
00552         glVertex3f(-w0, -h0, 0.0);
00553 
00554         glTexCoord2f(0.0f, 1.0f);
00555         glVertex3f(-w0, h0, 0.0);
00556 
00557         glTexCoord2f(1.0f, 1.0f);
00558         glVertex3f(w0, h0, 0.0);
00559 
00560         glTexCoord2f(1.0f, 0.0f);
00561         glVertex3f(w0, -h0, 0.0);
00562         glEnd();
00563 
00564         m_Raycast->clean();
00565 
00566         
00567 }
00568 
00569 void VVolumeRenderer::generateProxyGeometryDisplayList()
00570 {
00571         if(m_ProxyGeometryDisplayListHandle != 0)
00572         {
00573                 glDeleteLists(m_ProxyGeometryDisplayListHandle, 1);
00574         }
00575         m_ProxyGeometryDisplayListHandle = glGenLists(1);
00576 
00577         float xneg = m_ClipPlanes[LEFT_RIGHT];
00578         float xpos = m_ClipPlanes[RIGHT_LEFT];
00579 
00580         float yneg = m_ClipPlanes[BOTTOM_TOP];
00581         float ypos = m_ClipPlanes[TOP_BOTTOM];
00582 
00583         float zneg = m_ClipPlanes[FRONT_BACK];
00584         float zpos = m_ClipPlanes[BACK_FRONT];
00585 
00586         m_VolumeSize[0] = xsize;
00587         m_VolumeSize[1] = ysize;
00588         m_VolumeSize[2] = zsize;
00589         m_VolumeSize[3] = 1.0f;
00590 
00591         glNewList(m_ProxyGeometryDisplayListHandle, GL_COMPILE);
00592         glBegin(GL_QUADS);// Start Drawing Quads
00593         // Front Face
00594         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00595         glMultiTexCoord3f(GL_TEXTURE0, xneg, yneg, zpos);
00596         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Left Of The    Texture and Quad
00597         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00598         glMultiTexCoord3f(GL_TEXTURE0, xpos, yneg, zpos);
00599         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Right Of    The Texture and Quad
00600         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00601         glMultiTexCoord3f(GL_TEXTURE0, xpos, ypos, zpos);
00602         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Top Right Of The    Texture and Quad
00603         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00604         glMultiTexCoord3f(GL_TEXTURE0, xneg, ypos, zpos);
00605         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Top Left Of The Texture    and Quad
00606 
00607         // Back Face
00608         //glColor4f(1.0f, 1.0f, 0.0f, 1.0f);
00609         glMultiTexCoord3f(GL_TEXTURE0, xneg, yneg, zneg);
00610         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Bottom Right Of    The Texture and Quad
00611         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00612         glMultiTexCoord3f(GL_TEXTURE0, xneg, ypos, zneg);
00613         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Right Of The    Texture and Quad
00614         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00615         glMultiTexCoord3f(GL_TEXTURE0, xpos, ypos, zneg);
00616         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Left Of The    Texture and Quad
00617         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00618         glMultiTexCoord3f(GL_TEXTURE0, xpos, yneg, zneg);
00619         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Bottom Left Of    The Texture and Quad
00620 
00621         // Top Face
00622         //glColor4f(1.0f, 0.0f, 1.0f, 1.0f);
00623         glMultiTexCoord3f(GL_TEXTURE0, xneg, ypos, zneg);
00624         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Left Of The    Texture and Quad
00625         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00626         glMultiTexCoord3f(GL_TEXTURE0, xneg, ypos, zpos);
00627         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Left Of The    Texture and Quad
00628         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00629         glMultiTexCoord3f(GL_TEXTURE0, xpos, ypos, zpos);
00630         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Right Of The    Texture and Quad
00631         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00632         glMultiTexCoord3f(GL_TEXTURE0, xpos, ypos, zneg);
00633         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Right Of The    Texture and Quad
00634 
00635         // Bottom Face
00636         //glColor4f(0.0f, 1.0f, 0.0f, 1.0f);
00637         glMultiTexCoord3f(GL_TEXTURE0, xneg, yneg, zneg);
00638         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Right Of The    Texture and Quad
00639         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00640         glMultiTexCoord3f(GL_TEXTURE0, xpos, yneg, zneg);
00641         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Left Of The    Texture and Quad
00642         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00643         glMultiTexCoord3f(GL_TEXTURE0, xpos, yneg, zpos);
00644         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Left Of The    Texture and Quad
00645         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00646         glMultiTexCoord3f(GL_TEXTURE0, xneg, yneg, zpos);
00647         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Right Of    The Texture and Quad
00648 
00649         // Right face
00650         //glColor4f(0.0f, 1.0f, 1.0f, 1.0f);
00651         glMultiTexCoord3f(GL_TEXTURE0, xpos, yneg, zneg);
00652         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Bottom Right Of    The Texture and Quad
00653         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00654         glMultiTexCoord3f(GL_TEXTURE0, xpos, ypos, zneg);
00655         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Right Of The    Texture and Quad
00656         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00657         glMultiTexCoord3f(GL_TEXTURE0, xpos, ypos, zpos);
00658         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Top Left Of The Texture    and Quad
00659         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00660         glMultiTexCoord3f(GL_TEXTURE0, xpos, yneg, zpos);
00661         glVertex3f( float(xsize -  ((1.0f - xpos) * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Left Of The    Texture and Quad
00662 
00663         // Left Face
00664         //glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
00665         glMultiTexCoord3f(GL_TEXTURE0, xneg, yneg, zneg);
00666         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Bottom Left Of    The Texture and Quad
00667         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00668         glMultiTexCoord3f(GL_TEXTURE0, xneg, yneg, zpos);
00669         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)), float((-ysize) +  (yneg * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Bottom Right Of    The Texture and Quad
00670         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00671         glMultiTexCoord3f(GL_TEXTURE0, xneg, ypos, zpos);
00672         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)),  float(zsize -  ((1.0f - zpos) * zsize/0.5f)));// Top Right Of The    Texture and Quad
00673         //glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
00674         glMultiTexCoord3f(GL_TEXTURE0, xneg, ypos, zneg);
00675         glVertex3f(float((-xsize) +  (xneg * xsize/0.5f)),  float(ysize -  ((1.0f - ypos) * ysize/0.5f)), float((-zsize) +  (zneg * zsize/0.5f)));// Top Left Of The    Texture and Quad
00676         glEnd();// Done Drawing Quads
00677         glEndList();
00678 
00679         const GLenum glError = glGetError();
00680 
00681         if (glError != GL_NO_ERROR)
00682                 std::cout << "Error generating display List " << gluErrorString(glError) << std::endl;
00683         m_updateDL = false;
00684 }
00685 
00686 void VVolumeRenderer::resize(int width, int height)
00687 {
00688         m_Camera.setProjection(width, height);
00689 
00690         if(m_FrontFaceTexture)
00691         {
00692                 delete m_FrontFaceTexture;
00693         }
00694         m_FrontFaceTexture = new VFramebufferObject(width, height, GL_RGBA16F_ARB);
00695         if(m_BackFaceTexture)
00696         {
00697                 delete m_BackFaceTexture;
00698         }
00699         m_BackFaceTexture = new VFramebufferObject(width, height, GL_RGBA16F_ARB);
00700         m_FrontFaceTexture->init();
00701         m_BackFaceTexture->init();
00702 
00703         if(m_WorldFrontFaceTexture)
00704         {
00705                 delete m_WorldFrontFaceTexture;
00706         }
00707         m_WorldFrontFaceTexture = new VFramebufferObject(width, height, GL_RGBA16F_ARB);
00708         if(m_WorldBackFaceTexture)
00709         {
00710                 delete m_WorldBackFaceTexture;
00711         }
00712         m_WorldBackFaceTexture = new VFramebufferObject(width, height, GL_RGBA16F_ARB);
00713         m_WorldFrontFaceTexture->init();
00714         m_WorldBackFaceTexture->init();
00715 
00716         m_NoiseTex->loadImage("./tex/noisetexture1024.png");
00717         m_ToonTex->loadImage("./tex/toonnew512.png");
00718         m_MetalTex->loadImage("./tex/metaltex.png");
00719 }
00720 
00721 
00722 void VVolumeRenderer::processGuiInput(float dist, VVector position, VVector view, VVector up, VVector lookAt)
00723 {
00724         //VVector view = lookAt - position;
00725         view.normalize();
00726         view *= dist;
00727 
00728         VVector campos = lookAt - view;
00729 
00730         view.normalize();
00731 
00732         m_Camera.lookInDirection(campos, view, up);
00733 }
00734 
00735 void VVolumeRenderer::processInput(guiInput input)
00736 {
00737         /*this->m_ActiveSlice = input.m_ActiveSlice;
00738         this->m_CorSliceNumber = input.m_CorronalSlice;
00739         this->m_SagSliceNumber = input.m_SaggitalSlice;
00740         this->m_TransSliceNumber = input.m_TransversalSlice;*/
00741 }
00742 
00743 
00744 void VVolumeRenderer::setOrthoMode(bool m_orth, int width, int height)
00745 {
00746         m_Camera.setOrthogonalCamera(VVector((float)width, (float)height, 0.0f), m_orth);
00747 }
00748 
00749 void VVolumeRenderer::initContourTexture()
00750 {
00751         int texturesize = 512;
00752 
00753         std::vector<VVector> m_Colors;
00754                 
00755         for(int i = 0; i < texturesize; ++i)
00756         {
00757                 float value = 0.0f + 1.0f/texturesize * i;
00758                 m_Colors.push_back(VVector(value, value, value));
00759         }
00760 
00761         glEnable(GL_TEXTURE_2D);
00762         if(m_ContourHandle == 0)
00763         {
00764                 glGenTextures(1, &m_ContourHandle);
00765         }
00766 
00767         glBindTexture(GL_TEXTURE_2D, m_ContourHandle);
00768 
00769         int iInternalFormat = GL_RGB;
00770 
00771         glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
00772         glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
00773         
00774         glTexImage2D(GL_TEXTURE_2D, 0, iInternalFormat, texturesize, 2, 0, GL_RGB, GL_FLOAT, &m_Colors[0]);
00775 
00776         const GLenum glError = glGetError();
00777 
00778         if (glError != GL_NO_ERROR)
00779                 std::cout << "Error Setting up Contour Texture " << gluErrorString(glError) << std::endl;
00780 
00781 
00782         glBindTexture(GL_TEXTURE_2D, 0);
00783         glDisable(GL_TEXTURE_2D);
00784 }
00785
Generated on Wed Dec 5 05:15:09 2007 for VolRendering by  doxygen 1.5.4