add rendering of volume exploding shader (now work only in Map, no GMap)

include/Algo/Render/GL2/explodeVolumeRender.h

@@ -33,6 +33,9 @@
 #include "Topology/generic/dart.h"
 #include "Topology/generic/attributeHandler.h"
 #include "Topology/generic/functor.h"
+#include "Utils/vbo.h"
+#include "Utils/Shaders/shaderExplodeVolumes.h"
+#include "Utils/Shaders/shaderExplodeVolumesLines.h"
 
 namespace CGoGN
 {
@@ -47,23 +50,27 @@ namespace GL2
 {
 
 
-class explodeVolume_VBORender
+class ExplodeVolumeRender
 {
 protected:
 
+	Utils::ShaderExplodeVolumes* m_shader;
 
-	/**
-	* vbo buffers
-	* 0: vertices
-	* 1: normals
-	*/
-	GLuint m_VBOBuffers[2];
+	Utils::ShaderExplodeVolumesLines* m_shaderL;
+
+	Utils::VBO* m_vboPos;
+
+	Utils::VBO* m_vboPosLine;
 
 	/**
 	*number of triangles to draw
 	*/
 	GLuint m_nbTris;
 
+	GLuint m_nbLines;
+
+
+
 public:
 	/**
 	* Constructor
@@ -71,28 +78,49 @@ public:
 	* @param good functor that return true for darts of part to draw
 	* @param type_vbo vbo to alloc ( VBO_P, VBO_PN, VBO_PNC, VBO_PC ..)
 	*/
-	explodeVolume_VBORender();
+	ExplodeVolumeRender();
 
 	/**
 	* Destructor
 	*/
-	~explodeVolume_VBORender();
+	~ExplodeVolumeRender();
+
+
+	/**
+	 * return a ptr on used shader do not forgot to register
+	 */
+	Utils::GLSLShader* shaderFaces() { return m_shader;}
+
+	/**
+	 * return a ptr on used shader do not forgot to register
+	 */
+	Utils::GLSLShader* shaderLines() { return m_shaderL;}
+
 
 	/**
 	* update all drawing buffers
 	* @param map the map
-	* @param good selector
 	* @param positions  attribute of position vertices
-	* @param kf exploding coef for face
- 	* @param kv exploding coef for face
+	* @param good selector
 	*/
 	template<typename PFP>
-	void updateData(typename PFP::MAP& map, const FunctorSelect& good, const typename PFP::TVEC3& positions, float kf, float kv);
+	void updateData(typename PFP::MAP& map, typename PFP::TVEC3& positions, const FunctorSelect& good = allDarts);
 
 	/**
-	 * draw all topo
+	 * draw
 	 */
+	void drawEdges();
+
 	void drawFaces();
+
+
+	void setExplodeVolumes(float explode) { m_shader->setExplodeVolumes(explode);m_shaderL->setExplodeVolumes(explode);}
+
+	void setAmbiant(const Geom::Vec4f& ambiant) { m_shader->setAmbiant(ambiant);}
+
+	void setDiffuse(const Geom::Vec4f& diffuse) { m_shader->setDiffuse(diffuse);}
+
+	void setLightPosition(const Geom::Vec3f& lp) { m_shader->setLightPosition(lp);}
 };
 
 }//end namespace GL2

include/Algo/Render/GL2/explodeVolumeRender.hpp

@@ -26,6 +26,7 @@
 #include "Geometry/vector_gen.h"
 #include "Topology/generic/dartmarker.h"
 #include "Topology/generic/cellmarker.h"
+#include "Algo/Geometry/centroid.h"
 
 namespace CGoGN
 {
@@ -39,178 +40,140 @@ namespace Render
 namespace GL2
 {
 
-inline explodeVolume_VBORender::explodeVolume_VBORender()
+inline ExplodeVolumeRender::ExplodeVolumeRender()
 {
-	glGenBuffersARB(2, m_VBOBuffers);
-}
+	m_vboPos = new Utils::VBO();
+	m_vboPos->setDataSize(3);
+
+	m_vboPosLine = new Utils::VBO();
+	m_vboPosLine->setDataSize(3);
+
+	m_shader = new Utils::ShaderExplodeVolumes();
+	m_shaderL = new Utils::ShaderExplodeVolumesLines();
 
+//	m_shader->setAmbiant(Geom::Vec4f(0.1f,0.1f,0.1f,0.0f));
+//	m_shader->setDiffuse(Geom::Vec4f(1.0f,1.0f,0.1f,0.0f));
+	m_shaderL->setColor(Geom::Vec4f(1.0f,1.0f,1.0f,0.0f));
+
+
+}
 
-explodeVolume_VBORender::~explodeVolume_VBORender()
+inline ExplodeVolumeRender::~ExplodeVolumeRender()
 {
-	glDeleteBuffersARB(2, m_VBOBuffers);
+	delete m_vboPos;
+	delete m_vboPosLine;
+	delete m_shader;
+	delete m_shaderL;
 }
 
 template<typename PFP>
-void explodeVolume_VBORender::updateData(typename PFP::MAP& map, const FunctorSelect& good, const typename PFP::TVEC3& positions,float kf, float kv)
+void ExplodeVolumeRender::updateData(typename PFP::MAP& map, typename PFP::TVEC3& positions, const FunctorSelect& good)
 {
 	typedef typename PFP::VEC3 VEC3;
 	typedef typename PFP::REAL REAL;
 
-	m_nbTris = 0;
+	CellMarker cmv(map,VOLUME);
+	AutoAttributeHandler<VEC3> centerVolumes(map,VOLUME,"centerVolumes");
+	TraversorW<typename PFP::MAP> traVol(map,good);
+	for (Dart d=traVol.begin(); d!=traVol.end(); d=traVol.next())
+	{
+		centerVolumes[d] = Algo::Geometry::volumeCentroid<PFP>(map, d, positions);
+	}
 
-	// table of center of volume
-	std::vector<VEC3> vecCenters;
-	vecCenters.reserve(1000);
-	// table of nbfaces per volume
-	std::vector<unsigned int> vecNbFaces;
-	vecNbFaces.reserve(1000);
-	// table of face (one dart of each)
-	std::vector<Dart> vecDartFaces;
-	vecDartFaces.reserve(map.getNbDarts()/4);
+	std::vector<VEC3> buffer;
+	buffer.reserve(16384);
 
-	DartMarker mark(map);					// marker for darts
-	for (Dart d = map.begin(); d != map.end(); map.next(d))
+	TraversorOF<typename PFP::MAP> traFace(map,good);
+	for (Dart d=traFace.begin(); d!=traFace.end(); d=traFace.next())
 	{
-		if (good(d))
+		Dart a = d;
+		Dart b = map.phi1(a);
+		Dart c = map.phi1(b);
+
+		// loop to cut a polygon in triangle on the fly (works only with convex faces)
+		do
 		{
-			CellMarkerStore markVert(map, VERTEX);		//marker for vertices
-			VEC3 center(0, 0, 0);
-			unsigned int nbv = 0;
-			unsigned int nbf = 0;
-			std::list<Dart> visitedFaces;	// Faces that are traversed
-			visitedFaces.push_back(d);		// Start with the face of d
-
-			// For every face added to the list
-			for (std::list<Dart>::iterator face = visitedFaces.begin(); face != visitedFaces.end(); ++face)
-			{
-				if (!mark.isMarked(*face))		// Face has not been visited yet
-				{
-					// store a dart of face
-					vecDartFaces.push_back(*face);
-					nbf++;
-					Dart dNext = *face ;
-					unsigned int nbe=0;
-					do
-					{
-						if (!markVert.isMarked(dNext))
-						{
-							markVert.mark(dNext);
-							center += positions[dNext];
-							nbv++;
-						}
-						mark.mark(dNext);					// Mark
-						nbe++;
-						Dart adj = map.phi2(dNext);				// Get adjacent face
-						if (adj != dNext && !mark.isMarked(adj))
-							visitedFaces.push_back(adj);	// Add it
-						dNext = map.phi1(dNext);
-					} while(dNext != *face);
-					m_nbTris += nbe-2;
-				}
-			}
-			center /= typename PFP::REAL(nbv);
-			vecCenters.push_back(center);
-			vecNbFaces.push_back(nbf);
-		}
+			buffer.push_back(centerVolumes[d]);
+			buffer.push_back(positions[d]);
+			buffer.push_back(positions[b]);
+			buffer.push_back(positions[c]);
+			b = c;
+			c = map.phi1(b);
+
+		} while (c != d);
 	}
 
-	glBindBufferARB(GL_ARRAY_BUFFER, m_VBOBuffers[0]);
-	glBufferDataARB(GL_ARRAY_BUFFER, m_nbTris*3*3*sizeof(GLfloat), 0, GL_STREAM_DRAW);
-	GLvoid* PositionBuffer = glMapBufferARB(GL_ARRAY_BUFFER, GL_READ_WRITE);
-	VEC3* positionBuf = reinterpret_cast<VEC3*>(PositionBuffer);
+	m_nbTris = buffer.size()/4;
+
+	m_vboPos->allocate(buffer.size());
+
+	VEC3* ptrPos = reinterpret_cast<VEC3*>(m_vboPos->lockPtr());
+	memcpy(ptrPos,&buffer[0],buffer.size()*sizeof(VEC3));
 
-	glBindBufferARB(GL_ARRAY_BUFFER, m_VBOBuffers[1]);
-	glBufferDataARB(GL_ARRAY_BUFFER, m_nbTris*3*3*sizeof(GLfloat), 0, GL_STREAM_DRAW);
-	GLvoid* NormalBuffer = glMapBufferARB(GL_ARRAY_BUFFER, GL_READ_WRITE);
-	VEC3* normalBuf = reinterpret_cast<VEC3*>(NormalBuffer);
+	m_vboPos->releasePtr();
+	m_shader->setAttributePosition(m_vboPos);
 
 
-	std::vector<Dart>::iterator face = vecDartFaces.begin();
-	for (unsigned int iVol=0; iVol<vecNbFaces.size(); ++iVol)
+	buffer.clear();
+//	TraversorE<typename PFP::MAP> traEdge(map,good);
+//	for (Dart d=traEdge.begin(); d!=traEdge.end(); d=traEdge.next())
+//	{
+//		buffer.push_back(centerVolumes[d]);
+//		buffer.push_back(positions[d]);
+//		buffer.push_back(positions[ map.phi1(d)]);
+//	}
+
+	// TO A REFAIRE AVEC LE BON TRAVERSOR DE LA BONNE ORBITE QUAND ELLE EXISTERA
+
+	DartMarker dm(map);
+	for (Dart d=map.begin(); d!=map.end(); map.next(d))
 	{
-		for (unsigned int iFace = 0; iFace < vecNbFaces[iVol]; ++iFace)
+		if (good(d) && !dm.isMarked(d))
 		{
-			Dart d = *face++;
-
-			std::vector<VEC3> vecPos;
-			vecPos.reserve(16);
-
-			// store the face & center
-			VEC3 center(0, 0, 0);
-			Dart dd = d;
-			do
-			{
-				const VEC3& P = positions[d];
-				vecPos.push_back(P);
-				center += P;
-				d = map.phi1(d);
-			} while (d != dd);
-			center /= REAL(vecPos.size());
-
-			//shrink the face
-			unsigned int nb = vecPos.size();
-			float okf = 1.0f - kf;
-			float okv = 1.0f - kv;
-			for (unsigned int i = 0; i < nb; ++i)
-			{
-				vecPos[i] = vecCenters[iVol]*okv + vecPos[i]*kv;
-				vecPos[i] = center*okf + vecPos[i]*kf;
-			}
-			vecPos.push_back(vecPos.front()); // copy the first for easy computation on next loop
-
-			// compute Normal
-			unsigned int angle = 1;
-			VEC3 N;
-			do{
-				VEC3 V =  vecPos[angle+1] -  vecPos[angle];
-				VEC3 U =  vecPos[angle] -  vecPos[angle-1];
-				N = U^V;
-				angle++;
-			}while (std::isnan(N[0]) && (angle < nb));
-
-			N.normalize();
-
-			// compute position of points to use for drawing topo
-			for (unsigned int i = 2; i < nb; ++i)
-			{
-				*positionBuf++ =  vecPos[0];
-				*normalBuf++ = N;
-				*positionBuf++ =  vecPos[i-1];
-				*normalBuf++ = N;
-				*positionBuf++ =  vecPos[i];
-				*normalBuf++ = N;
-				d = map.phi1(d);
-			}
+			buffer.push_back(centerVolumes[d]);
+			buffer.push_back(positions[d]);
+			buffer.push_back(positions[ map.phi1(d)]);
+			dm.mark(d);
+			dm.mark(map.phi2(d));
 
 		}
+
 	}
 
-	glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, m_VBOBuffers[0]);
-	glUnmapBufferARB(GL_ELEMENT_ARRAY_BUFFER);
 
-	glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, m_VBOBuffers[1]);
-	glUnmapBufferARB(GL_ELEMENT_ARRAY_BUFFER);
+
+	m_nbLines = buffer.size()/3;
+
+	m_vboPosLine->allocate(buffer.size());
+
+	ptrPos = reinterpret_cast<VEC3*>(m_vboPosLine->lockPtr());
+	memcpy(ptrPos,&buffer[0],buffer.size()*sizeof(VEC3));
+
+	m_vboPosLine->releasePtr();
+	m_shaderL->setAttributePosition(m_vboPosLine);
 
 }
 
 
-inline void explodeVolume_VBORender::drawFaces()
+inline void ExplodeVolumeRender::drawFaces()
 {
-	glBindBufferARB(GL_ARRAY_BUFFER, m_VBOBuffers[0]);
-	glVertexPointer(3, GL_FLOAT, 0, 0);
-	glEnableClientState(GL_VERTEX_ARRAY);
+	m_shader->enableVertexAttribs();
+	glDrawArrays(GL_LINES_ADJACENCY_EXT , 0 , m_nbTris*4 );
+	m_shader->disableVertexAttribs();
+}
 
-	glBindBufferARB(GL_ARRAY_BUFFER, m_VBOBuffers[1]);
-	glNormalPointer(GL_FLOAT, 0, 0);
-	glEnableClientState(GL_NORMAL_ARRAY);
 
-	glDrawArrays(GL_TRIANGLES, 0, m_nbTris*3);
+inline void ExplodeVolumeRender::drawEdges()
+{
 
-	glDisableClientState(GL_VERTEX_ARRAY);
-	glDisableClientState(GL_NORMAL_ARRAY);
+	m_shaderL->enableVertexAttribs();
+	glDrawArrays(GL_TRIANGLES , 0 , m_nbLines*3 );
+	m_shaderL->disableVertexAttribs();
 }
 
 
+
+
 }//end namespace VBO
 
 }//end namespace Algo

include/Utils/Shaders/shaderExplodeVolumes.frag

+// ShaderExplodeVolumes::fragmentShaderText
+VARYING_FRAG vec4 ColorFS;
+void main()
+{
+	gl_FragColor = ColorFS;
+}

include/Utils/Shaders/shaderExplodeVolumes.geom

+// ShaderExplodeVolumes::geometryShaderText
+uniform float explodeV;
+uniform mat4 ModelViewProjectionMatrix;
+uniform mat4 NormalMatrix;
+uniform mat4 ModelViewMatrix;
+uniform vec3 lightPosition;
+uniform vec4 diffuse;
+uniform vec4 ambient;
+VARYING_OUT vec4 ColorFS;
+void main(void)
+{
+
+	vec3 v1 = POSITION_IN(2).xyz - POSITION_IN(1).xyz;
+	vec3 v2 = POSITION_IN(3).xyz - POSITION_IN(1).xyz;
+	vec3 N  = cross(v1,v2);
+	N  =  normalize (vec3(NormalMatrix*vec4(N,0.0))); 
+	
+// compute face center & lighting informations
+	vec4 newPos =  ModelViewMatrix * POSITION_IN(1);
+	vec3 L =  normalize (lightPosition - newPos.xyz);
+	float lambertTerm = dot(N,L);
+	ColorFS = ambient;
+	if (lambertTerm > 0.0)
+		ColorFS += diffuse * lambertTerm;
+
+// Explode in face 	
+
+	for (int i=1; i<NBVERTS_IN; i++)
+	{
+		vec4 P = explodeV * POSITION_IN(i) + (1.0-explodeV)* POSITION_IN(0);
+		gl_Position = ModelViewProjectionMatrix *  P;
+		EmitVertex();
+	}
+	EndPrimitive();	
+}

include/Utils/Shaders/shaderExplodeVolumes.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2011, IGG Team, LSIIT, University of Strasbourg           *
+*                                                                              *
+* This library is free software; you can redistribute it and/or modify it      *
+* under the terms of the GNU Lesser General Public License as published by the *
+* Free Software Foundation; either version 2.1 of the License, or (at your     *
+* option) any later version.                                                   *
+*                                                                              *
+* This library is distributed in the hope that it will be useful, but WITHOUT  *
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
+* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License  *
+* for more details.                                                            *
+*                                                                              *
+* You should have received a copy of the GNU Lesser General Public License     *
+* along with this library; if not, write to the Free Software Foundation,      *
+* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
+*                                                                              *
+* Web site: http://cgogn.u-strasbg.fr/                                         *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef __CGOGN_SHADER_EXPLODE_VOLUMES__
+#define __CGOGN_SHADER_EXPLODE_VOLUMES__
+
+#include "Utils/GLSLShader.h"
+#include "Geometry/vector_gen.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+class ShaderExplodeVolumes : public GLSLShader
+{
+protected:
+	// shader sources
+    static std::string vertexShaderText;
+    static std::string fragmentShaderText;
+    static std::string geometryShaderText;
+
+    // uniform locations
+	GLuint m_unif_ambiant;
+	GLuint m_unif_diffuse;
+	GLuint m_unif_lightPos;
+	GLuint m_unif_explodeV;
+
+	float m_explodeV;
+	Geom::Vec4f m_ambiant;
+	Geom::Vec4f m_diffuse;
+	Geom::Vec3f m_light_pos;
+
+	VBO* m_vboPos;
+
+	void getLocations();
+
+	void restoreUniformsAttribs();
+
+public:
+	ShaderExplodeVolumes();
+
+	void setExplodeVolumes(float explode);
+
+	void setAmbiant(const Geom::Vec4f& ambiant);
+
+	void setDiffuse(const Geom::Vec4f& diffuse);
+
+	void setLightPosition(const Geom::Vec3f& lp);
+
+	void setParams(float explodeV, const Geom::Vec4f& ambiant, const Geom::Vec4f& diffuse, const Geom::Vec3f& lightPos);
+
+	void setAttributePosition(VBO* vbo);
+};
+
+} // namespace Utils
+
+} // namespace CGoGN
+
+#endif

include/Utils/Shaders/shaderExplodeVolumes.vert

+// ShaderExplodeVolumes::vertexShaderText
+ATTRIBUTE vec3 VertexPosition;
+void main()
+{
+	gl_Position = vec4(VertexPosition, 1.0);
+}

include/Utils/Shaders/shaderExplodeVolumesLines.frag

+// ShaderExplodeVolumesLines::fragmentShaderText
+VARYING_FRAG vec4 ColorFS;
+void main()
+{
+	gl_FragColor = ColorFS;
+}

include/Utils/Shaders/shaderExplodeVolumesLines.geom

+// ShaderExplodeVolumesLines::geometryShaderText
+uniform float explodeV;
+uniform mat4 ModelViewProjectionMatrix;
+uniform mat4 NormalMatrix;
+uniform mat4 ModelViewMatrix;
+
+uniform vec4 color;
+VARYING_OUT vec4 ColorFS;
+void main(void)
+{
+	ColorFS = color;
+
+	for (int i=1; i<NBVERTS_IN; i++)
+	{
+		vec4 P = explodeV * POSITION_IN(i) + (1.0-explodeV)* POSITION_IN(0);
+		gl_Position = ModelViewProjectionMatrix *  P;
+		EmitVertex();
+	}
+	EndPrimitive();	
+}

include/Utils/Shaders/shaderExplodeVolumesLines.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2011, IGG Team, LSIIT, University of Strasbourg           *
+*                                                                              *
+* This library is free software; you can redistribute it and/or modify it      *
+* under the terms of the GNU Lesser General Public License as published by the *
+* Free Software Foundation; either version 2.1 of the License, or (at your     *
+* option) any later version.                                                   *
+*                                                                              *
+* This library is distributed in the hope that it will be useful, but WITHOUT  *
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
+* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License  *
+* for more details.                                                            *
+*                                                                              *
+* You should have received a copy of the GNU Lesser General Public License     *
+* along with this library; if not, write to the Free Software Foundation,      *
+* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
+*                                                                              *
+* Web site: http://cgogn.u-strasbg.fr/                                         *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef __CGOGN_SHADER_EXPLODE_VOLUMES_LINES__
+#define __CGOGN_SHADER_EXPLODE_VOLUMES_LINES__
+
+#include "Utils/GLSLShader.h"
+#include "Geometry/vector_gen.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+class ShaderExplodeVolumesLines : public GLSLShader
+{
+protected:
+	// shader sources
+    static std::string vertexShaderText;
+    static std::string fragmentShaderText;
+    static std::string geometryShaderText;
+
+    // uniform locations
+	GLuint m_unif_color;
+	GLuint m_unif_explodeV;
+
+	float m_explodeV;
+	Geom::Vec4f m_color;
+
+	VBO* m_vboPos;
+
+	void getLocations();
+
+	void restoreUniformsAttribs();
+
+public:
+	ShaderExplodeVolumesLines();
+
+	void setExplodeVolumes(float explode);
+
+	void setColor(const Geom::Vec4f& color);
+
+	void setParams(float explodeV, const Geom::Vec4f& color);
+
+	void setAttributePosition(VBO* vbo);
+};
+
+} // namespace Utils
+
+} // namespace CGoGN