import & render of obj with tex (in texture example)

Apps/Examples/texturesExample.cpp

@@ -28,18 +28,18 @@
 #include "Utils/vbo.h" 
 
 TexView::TexView():
-	m_render(NULL),
+	m_obj(myMap),
 	m_positionVBO(NULL),
 	m_texcoordVBO(NULL),
+	m_nbIndices(0),
 	m_texture(NULL),
 	m_shader(NULL),
-	m_modeMask(false),
-	m_fileName("")
+	m_shader2(NULL),
+	m_phong(true)
 {}
 
 TexView::~TexView()
 {
-	delete m_render;
 	delete m_shader;
 	delete m_positionVBO;
 	delete m_texcoordVBO;
@@ -51,21 +51,21 @@ void TexView::cb_initGL()
 	// choose to use GL version 2
 	Utils::GLSLShader::setCurrentOGLVersion(2);
 
-	// create the render
-	m_render = new Algo::Render::GL2::MapRender();
-
 	// create VBO for position
 	m_positionVBO = new Utils::VBO;
 	m_texcoordVBO = new Utils::VBO;
+	m_normalVBO = new Utils::VBO;
 
 	m_texture = new Utils::Texture<2,Geom::Vec3uc>(GL_UNSIGNED_BYTE);
-	computeImage();
-	m_texture->update();
 
-	m_mask = new Utils::Texture<2,float>(GL_FLOAT);
-	m_mask->create(Geom::Vec2ui(256,256));
-	createMask(8);
-	m_mask->update();
+	if (m_texture->load(m_fileNameTex))
+		m_texture->update();
+	else
+		computeImage();
+//		CGoGNerr << "Problem loading image"<< CGoGNendl;
+
+	m_texture->setWrapping(GL_CLAMP_TO_EDGE);
+	m_texture->update();
 
 	m_shader = new Utils::ShaderSimpleTexture();
 	m_shader->setAttributePosition(m_positionVBO);
@@ -74,125 +74,115 @@ void TexView::cb_initGL()
 	m_shader->setTexture(m_texture);
 	registerShader(m_shader);
 
-	m_shader2 = new Utils::ShaderTextureMask();
+	m_shader2 = new Utils::ShaderPhongTexture();
 	m_shader2->setAttributePosition(m_positionVBO);
 	m_shader2->setAttributeTexCoord(m_texcoordVBO);
-	m_shader2->setTextureUnits(GL_TEXTURE0,GL_TEXTURE1);
-	m_shader2->setTextures(m_texture,m_mask);
+	m_shader2->setAttributeNormal(m_normalVBO);
+	m_shader2->setTextureUnit(GL_TEXTURE1);
+	m_shader2->setTexture(m_texture);
+	m_shader2->setShininess(10.0f);
+	m_shader2->setAmbient(0.1f);
+	m_shader2->setSpecular(Geom::Vec4f(0.5));
 	registerShader(m_shader2);
 
+
 	glEnable(GL_TEXTURE_2D);
 
-	m_render->initPrimitives<PFP>(myMap, Algo::Render::GL2::TRIANGLES);
+	if (!m_obj.hasNormals())
+	{
+		VertexAttribute<Geom::Vec3f> normal = myMap.getAttribute<VEC3, VERTEX>("normal") ;
+		if(!normal.isValid())
+			normal = myMap.addAttribute<VEC3, VERTEX>("normal") ;
+
+		Algo::Surface::Geometry::computeNormalVertices<PFP>(myMap, m_obj.m_positions, normal) ;
+		m_obj.setNormalAttribute(normal);
+	}
+
+	m_nbIndices = m_obj.createSimpleVBO_PTN(m_positionVBO,m_texcoordVBO,m_normalVBO);
+
 }
 
 void TexView::cb_redraw()
 {
 	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-	glEnable(GL_LIGHTING);
-	if (m_shader)
+
+	if (m_phong)
 	{
-		if (m_modeMask)
-		{
-			m_shader2->activeTextures();
-			m_render->draw(m_shader2, Algo::Render::GL2::TRIANGLES);
-		}
-		else
-		{
-			m_shader->activeTexture();
-			m_render->draw(m_shader, Algo::Render::GL2::TRIANGLES);
-		}
+		m_shader2->activeTexture();
+		m_shader2->enableVertexAttribs();
+		glDrawArrays(GL_TRIANGLES, 0, m_nbIndices);
+		m_shader2->disableVertexAttribs();
 	}
+	else
+	{
+		m_shader->activeTexture();
+		m_shader->enableVertexAttribs();
+		glDrawArrays(GL_TRIANGLES, 0, m_nbIndices);
+		m_shader->disableVertexAttribs();
+	}
+
+
 }
 
 void TexView::cb_keyPress(int code)
 {
 	switch(code)
 	{
+	case 'p':
+		m_phong = !m_phong;
 	case 'l':
 		m_texture->setFiltering(GL_LINEAR);
 		break;
 	case 'n':
 		m_texture->setFiltering(GL_NEAREST);
 		break;
-	case 'm':
-		m_modeMask = !m_modeMask;
-		if (m_modeMask)
-		{
-			createMask(16);
-			m_mask->update();
-		}
+	case '1':
+		m_shader2->setShininess(10.0f);
 		break;
-	case 'M':
-		m_modeMask = !m_modeMask;
-		if (m_modeMask)
-		{
-			createMask(8);
-			m_mask->update();
-		}
+	case '2':
+		m_shader2->setShininess(100.0f);
 		break;
-	case 's':
-		m_texture->subSample2<Geom::Vec3d>();
-		m_texture->update();
+	case '3':
+		m_shader2->setShininess(500.0f);
 		break;
-	case 't':
-		m_texture->rotate90(3);
-		m_texture->update();
+	case '4':
+		m_shader2->setShininess(25000.0f);
 		break;
-
-
-	case 'r':
-		m_texture->load(m_fileName);
-		m_texture->update();
+	case '5':
+		m_shader2->setShininess(1.0f);
+		m_shader2->setSpecular(Geom::Vec4f(0));
 		break;
+
 	}
 	updateGL();
 }
 
-void TexView::cb_Open()
+void TexView::init(char *fnm, char* fnt)
 {
-	std::string filename = selectFile("Open Image","/tmp");
-	if (!filename.empty())
+	if (fnm == NULL)
 	{
-		m_fileName = filename;
-		if (m_texture->load(filename))
-		{
-			m_texture->update();
-			updateGL();
-		}
-		else
-			CGoGNerr << "Problem loading image"<< CGoGNendl;
+		computeTore();
+		m_fileNameTex  = std::string(fnt);
 	}
 	else
 	{
-		computeImage();
-		m_texture->update();
-		updateGL();
+		m_fileNameMesh = std::string(fnm);
+		m_fileNameTex  = std::string(fnt);
+		std::vector<std::string> attrNames;
+
+		m_obj.import(m_fileNameMesh,attrNames);
 	}
-}
 
-void TexView::createMask(unsigned int nb)
-{
-	if (nb ==0)
-		return;
+	Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(myMap, m_obj.m_positions);
+	float lWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
+	Geom::Vec3f lPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);
 
-	unsigned int sz0 = m_mask->size()[0]/nb;
-	unsigned int sz1 = m_mask->size()[1]/nb;
+	// send BB info to interface for centering on GL screen
+	setParamObject(lWidthObj, lPosObj.data());
 
-	for (unsigned int j=0; j<m_mask->size()[1]; ++j)
-	{
-		for (unsigned int i=0; i<m_mask->size()[0]; ++i)
-		{
-			bool b1 = (i/sz0)%2 ==0;
-			bool b2 = (j/sz1)%2 ==0;
-			if (b1!=b2)
-				(*m_mask)(i,j)=1.0f;
-			else
-				(*m_mask)(i,j)= 0.0f;
-		}
-	}
 }
 
+
 void TexView::computeImage()
 {
 	std::vector<Geom::Vec3f> colorTable;
@@ -219,23 +209,15 @@ void TexView::computeImage()
 #undef WIDTHCHECKER
 }
 
-int main(int argc, char**argv)
+void TexView::computeTore()
 {
-	// interface:
-	QApplication app(argc, argv);
-	TexView tv;
-
-	PFP::MAP& m = tv.myMap;
-
-	VertexAttribute<VEC3> position = m.addAttribute<VEC3, VERTEX>("position");
-	VertexAttribute<Geom::Vec2f> texcoord = m.addAttribute<Geom::Vec2f, VERTEX>("texcoord");
-
 #define NB 96
 
-	Algo::Surface::Modelisation::Polyhedron<PFP> prim(m, position);
+	VertexAttribute<VEC3> position = myMap.addAttribute<VEC3, VERTEX>("position");
+	VertexAttribute<Geom::Vec2f> texcoord = myMap.addAttribute<Geom::Vec2f, VERTEX>("texcoord");
+	Algo::Surface::Modelisation::Polyhedron<PFP> prim(myMap, position);
 	prim.tore_topo(NB, NB);
 	prim.embedTore(40.0f,20.0f);
-
 	Dart d = prim.getDart();
 	for(unsigned int i=0; i<NB; ++i)
 	{
@@ -253,30 +235,42 @@ int main(int argc, char**argv)
 				b =(2.0f/NB)*(NB-j);
 
 			texcoord[d] = Geom::Vec2f(a,b);
-			d = m.phi<121>(d);
+			d = myMap.phi<121>(d);
 		}
-		d = m.phi<211>(d);
+		d = myMap.phi<211>(d);
 	}
-
 #undef NB
 
-    //  bounding box
-    Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(m, position);
-    float lWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
-    Geom::Vec3f lPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);
+	m_obj.setPositionAttribute(position);
+	m_obj.setTexCoordAttribute(texcoord);
+}
 
-    // envoit info BB a l'interface
-	tv.setParamObject(lWidthObj, lPosObj.data());
-	// show 1 pour GL context
-	tv.show();
 
-	// update des VBO (position et texture coord)
-	tv.m_positionVBO->updateData(position);
-	tv.m_texcoordVBO->updateData(texcoord);
 
-	// show final pour premier redraw
+
+int main(int argc, char**argv)
+{
+	// interface:
+	QApplication app(argc, argv);
+	TexView tv;
+
+	if (argc == 3)
+	{
+		tv.init(argv[1], argv[2]);
+	}
+	else if (argc == 2)
+	{
+		tv.init(NULL, argv[1]);
+	}
+	else
+	{
+		tv.init(NULL,"x");
+	}
+
+
 	tv.show();
 
+
 	// et on attend la fin.
 	return app.exec();
 }

Apps/Examples/texturesExample.h

@@ -30,17 +30,17 @@
 #include "Utils/Qt/qtSimple.h"
 #include "Utils/textures.h"
 #include "Utils/Shaders/shaderSimpleTexture.h"
-#include "Utils/Shaders/shaderTextureMask.h"
+#include "Utils/Shaders/shaderPhongTexture.h"
 #include "Topology/generic/parameters.h"
 #include "Topology/map/embeddedMap2.h"
 #include "Algo/Render/GL2/mapRender.h"
+#include "Algo/Import/importObjTex.h"
 
 
 // forward definitions (minimize includes)
 namespace CGoGN { namespace Algo { namespace Render { namespace GL2 { class MapRender; }}}}
 namespace CGoGN { namespace Utils { class VBO; } }
 
-
 using namespace CGoGN ;
 
 struct PFP: public PFP_STANDARD
@@ -59,36 +59,38 @@ class TexView: public Utils::QT::SimpleQT
 {
 	Q_OBJECT
 protected:
-	void createMask(unsigned int nb);
 	void computeImage();
+	void computeTore();
 public:
 
 	MAP myMap ;
-
-	// render
-	Algo::Render::GL2::MapRender* m_render;
+	Algo::Surface::Import::OBJModel<PFP> m_obj;
 
 	// VBO
 	Utils::VBO* m_positionVBO;
 	Utils::VBO* m_texcoordVBO;
+	Utils::VBO* m_normalVBO;
+	unsigned int m_nbIndices;
 
 	Utils::Texture<2,Geom::Vec3uc>* m_texture;
-	Utils::Texture<2,float>* m_mask;
 
-	//2 shaders
+	// shader simple texture
 	Utils::ShaderSimpleTexture* m_shader;
-	Utils::ShaderTextureMask* m_shader2;
+	Utils::ShaderPhongTexture* m_shader2;
 
-	//with mask or not
-	bool m_modeMask;
+	bool m_phong;
 
-	/// filename of last loaded texture
-	std::string m_fileName;
+	/// filename of loaded mesh
+	std::string m_fileNameMesh;
+	/// filename of loaded texture
+	std::string m_fileNameTex;
 
 	TexView();
 
 	~TexView();
 
+	void init(char* fnm, char* fnt);
+
 	// callbacks of simpleQT to overdefine:
 	void cb_redraw();
 
@@ -96,7 +98,6 @@ public:
 
 	void cb_keyPress(int code);
 
-	void cb_Open();
 };
 
 #endif

include/Algo/Import/importObjTex.h

@@ -70,6 +70,12 @@ protected:
 	/// read face line with different indices v  v/t v//n v/t/n
 	short readObjLine(std::stringstream& oss, std::vector<unsigned int>& indices);
 
+	unsigned int m_tagV ;
+	unsigned int m_tagVT ;
+	unsigned int m_tagVN ;
+	unsigned int m_tagG ;
+	unsigned int m_tagF ;
+
 public:
 
 	/// marker for special vertices (with several normals & tex coords)
@@ -97,6 +103,31 @@ public:
 	 */
 	OBJModel(typename PFP::MAP& map);
 
+	/**
+	 * @brief set position attribute
+	 * @param position attribute
+	 */
+	void setPositionAttribute(VertexAttribute<Geom::Vec3f> position);
+
+	/**
+	 * @brief set position attribute
+	 * @param position attribute
+	 */
+	void setNormalAttribute(VertexAttribute<Geom::Vec3f> normal);
+
+	/**
+	 * @brief set texture coordinate attribute
+	 * @param texcoord attribute
+	 */
+	void setTexCoordAttribute(VertexAttribute<Geom::Vec2f>texcoord);
+
+
+	bool hasTexCoords() const { return m_tagVT!=0; }
+
+	bool hasNormals() const { return m_tagVN!=0; }
+
+	bool hasGroups() const { return m_tagG!=0; }
+
 	/**
 	 * @brief import
 	 * @param filename

include/Algo/Import/importObjTex.hpp

@@ -38,7 +38,9 @@ namespace Import
 
 template <typename PFP>
 OBJModel<PFP>::OBJModel(typename PFP::MAP& map):
-	m_map(map),m_specialVertices(map),m_dirtyEdges(map)
+	m_map(map),
+	m_tagV(0),m_tagVT(0),m_tagVN(0),m_tagG(0),m_tagF(0),
+	m_specialVertices(map),m_dirtyEdges(map)
 {
 }
 
@@ -73,6 +75,25 @@ std::vector<std::string>& OBJModel<PFP>::getMaterialNames()
 	return m_materialNames;
 }
 
+template <typename PFP>
+void OBJModel<PFP>::setPositionAttribute(VertexAttribute<Geom::Vec3f> position)
+{
+	m_positions = position;
+}
+
+template <typename PFP>
+void OBJModel<PFP>::setNormalAttribute(VertexAttribute<Geom::Vec3f> normal)
+{
+	m_normals = normal;
+}
+
+template <typename PFP>
+void OBJModel<PFP>::setTexCoordAttribute(VertexAttribute<Geom::Vec2f>texcoord)
+{
+	m_texCoords = texcoord;
+}
+
+
 
 
 template <typename PFP>
@@ -337,10 +358,22 @@ unsigned int OBJModel<PFP>::createSimpleVBO_PT(Utils::VBO* positionVBO, Utils::V
 template <typename PFP>
 unsigned int OBJModel<PFP>::createSimpleVBO_PTN(Utils::VBO* positionVBO, Utils::VBO* texcoordVBO, Utils::VBO* normalVBO )
 {
+	if (!m_normals.isValid())
+	{
+		CGoGNerr << "no normal attribute "<< CGoGNendl;
+		return 0;
+	}
+	if (!m_texCoords.isValid())
+	{
+		CGoGNerr << "no tex coords attribute "<< CGoGNendl;
+		return 0;
+	}
+
+
 	TraversorF<typename PFP::MAP> traf(m_map);
 	std::vector<Geom::Vec3f> posBuff;
 	std::vector<Geom::Vec2f> TCBuff;
-	std::vector<Geom::Vec2f> normalBuff;
+	std::vector<Geom::Vec3f> normalBuff;
 	posBuff.reserve(16384);
 	TCBuff.reserve(16384);
 	normalBuff.reserve(16384);
@@ -355,8 +388,14 @@ unsigned int OBJModel<PFP>::createSimpleVBO_PTN(Utils::VBO* positionVBO, Utils::
 			posBuff.push_back(m_positions[d]);
 			if (m_specialVertices.isMarked(d))
 			{
-				TCBuff.push_back(m_texCoordsF[d]);
-				normalBuff.push_back(m_normalsF[d]);
+				if (hasTexCoords())
+					TCBuff.push_back(m_texCoordsF[d]);
+				else
+					TCBuff.push_back(m_texCoords[d]);
+				if (hasNormals())
+					normalBuff.push_back(m_normalsF[d]);
+				else
+					normalBuff.push_back(m_normals[d]);
 			}
 			else
 			{
@@ -367,8 +406,14 @@ unsigned int OBJModel<PFP>::createSimpleVBO_PTN(Utils::VBO* positionVBO, Utils::
 			posBuff.push_back(m_positions[e]);
 			if (m_specialVertices.isMarked(e))
 			{
-				TCBuff.push_back(m_texCoordsF[e]);
-				normalBuff.push_back(m_normalsF[e]);
+				if (hasTexCoords())
+					TCBuff.push_back(m_texCoordsF[e]);
+				else
+					TCBuff.push_back(m_texCoords[e]);
+				if (hasNormals())
+					normalBuff.push_back(m_normalsF[e]);
+				else
+					normalBuff.push_back(m_normals[e]);
 			}
 			else
 			{
@@ -379,8 +424,14 @@ unsigned int OBJModel<PFP>::createSimpleVBO_PTN(Utils::VBO* positionVBO, Utils::
 			posBuff.push_back(m_positions[f]);
 			if (m_specialVertices.isMarked(f))
 			{
-				TCBuff.push_back(m_texCoordsF[f]);
-				normalBuff.push_back(m_normalsF[f]);
+				if (hasTexCoords())
+					TCBuff.push_back(m_texCoordsF[f]);
+				else
+					TCBuff.push_back(m_texCoords[f]);
+				if (hasNormals())
+					normalBuff.push_back(m_normalsF[f]);
+				else
+					normalBuff.push_back(m_normals[f]);
 			}
 			else
 			{
@@ -504,12 +555,6 @@ bool OBJModel<PFP>::import( const std::string& filename, std::vector<std::string
 		return false;
 	}
 
-	unsigned int tagV = 0;
-	unsigned int tagVT = 0;
-	unsigned int tagVN = 0;
-	unsigned int tagG = 0;
-	unsigned int tagF = 0;
-
 	std::string ligne;
 	std::string tag;
 	do
@@ -517,23 +562,23 @@ bool OBJModel<PFP>::import( const std::string& filename, std::vector<std::string
 		fp >> tag;
 		std::getline (fp, ligne);
 		if (tag == "v")
-			tagV++;
+			m_tagV++;
 		if (tag == "vn")
-			tagVN++;
+			m_tagVN++;
 		if (tag == "vt")
-			tagVT++;
+			m_tagVT++;
 		if (tag == "g")
-			tagG++;
+			m_tagG++;
 		if (tag == "f")
-			tagF++;
+			m_tagF++;
 	}while (!fp.eof());
 
-	std::cout << "Parsing OBJ"<< tagV<< std::endl;
-	std::cout << "Vertices:"<< tagV<< std::endl;
-	std::cout << "Normals:"<< tagVN<< std::endl;
-	std::cout << "TexCoords:"<< tagVT<< std::endl;
-	std::cout << "Groups:"<< tagG<< std::endl;
-	std::cout << "Faces:"<< tagF<< std::endl;
+	std::cout << "Parsing OBJ"<< m_tagV<< std::endl;
+	std::cout << "Vertices:"<< m_tagV<< std::endl;
+	std::cout << "Normals:"<< m_tagVN<< std::endl;
+	std::cout << "TexCoords:"<< m_tagVT<< std::endl;
+	std::cout << "Groups:"<< m_tagG<< std::endl;
+	std::cout << "Faces:"<< m_tagF<< std::endl;
 
 
 	m_positions =  m_map.template getAttribute<typename PFP::VEC3, VERTEX>("position") ;
@@ -541,7 +586,7 @@ bool OBJModel<PFP>::import( const std::string& filename, std::vector<std::string
 		m_positions = m_map.template addAttribute<VEC3, VERTEX>("position") ;
 	attrNames.push_back(m_positions.name()) ;
 
-	if (tagVT != 0)
+	if (m_tagVT != 0)
 	{
 		m_texCoords =  m_map.template getAttribute<VEC2, VERTEX>("texCoord") ;
 		if (!m_texCoords.isValid())
@@ -553,7 +598,7 @@ bool OBJModel<PFP>::import( const std::string& filename, std::vector<std::string
 			m_texCoordsF = m_map.template addAttribute<VEC2, VERTEX1>("texCoordF") ;
 	}
 
-	if (tagVN != 0)
+	if (m_tagVN != 0)
 	{
 		m_normals =  m_map.template getAttribute<typename PFP::VEC3, VERTEX>("normal") ;
 		if (!m_normals.isValid())
@@ -566,7 +611,7 @@ bool OBJModel<PFP>::import( const std::string& filename, std::vector<std::string
 	}
 
 	
-	if (tagG != 0)
+	if (m_tagG != 0)
 	{
 		m_groups =  m_map.template getAttribute<unsigned int, FACE>("groups") ;
 		if (!m_groups.isValid())
@@ -582,18 +627,18 @@ bool OBJModel<PFP>::import( const std::string& filename, std::vector<std::string
 	fp.open(filename.c_str());
 
 	std::vector<VEC3> normalsBuffer;
-	normalsBuffer.reserve(tagVN);
+	normalsBuffer.reserve(m_tagVN);