better with the shaders

CGoGN/include/Utils/Shaders/shaderBoldColorLines.frag

+// ShaderBoldColorLines::fragmentShaderText
+
+PRECISION;
+
+VARYING_FRAG vec3 fragColor;
+uniform float alpha;
+uniform vec4 planeClip;
+VARYING_FRAG vec3 fragClip;
+
+FRAG_OUT_DEF;
+
+void main()
+{
+	if (dot(planeClip,vec4(fragClip,1.0))>0.0)
+		discard;
+	FRAG_OUT = vec4(fragColor,alpha);
+}

CGoGN/include/Utils/Shaders/shaderBoldColorLines.geom

+// ShaderBoldColorLines::geometryShaderText
+
+uniform float lineWidth;
+
+VARYING_IN vec3 vcolor[];
+VARYING_OUT vec3 fragColor;
+
+VARYING_IN vec3 posClip[];
+VARYING_OUT vec3 fragClip;
+
+void main()
+{
+	vec3 A = POSITION_IN(0).xyz / POSITION_IN(0).w;
+	vec3 B = POSITION_IN(1).xyz / POSITION_IN(1).w;
+
+	vec3 U = normalize(B-A);
+	vec3 V = cross(U,vec3(0.0,0.0,1.0));
+
+	fragClip = posClip[0];
+
+	fragColor = vcolor[0];
+	gl_Position = vec4(A-U*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(A+V*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(A-V*lineWidth, 1.0);
+	EmitVertex();
+	fragColor = vcolor[1];
+	fragClip = posClip[1];
+	gl_Position = vec4(B+V*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(B-V*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(B+U*lineWidth, 1.0);
+	EmitVertex();
+
+	EndPrimitive();
+}

CGoGN/include/Utils/Shaders/shaderBoldColorLines.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef __CGOGN_SHADER_BOLDCOLORLINES__
+#define __CGOGN_SHADER_BOLDCOLORLINES__
+
+#include "Utils/GLSLShader.h"
+#include "Utils/clippingShader.h"
+#include "Geometry/vector_gen.h"
+
+#include "Utils/dll.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+class CGoGN_UTILS_API ShaderBoldColorLines : public ClippingShader
+{
+protected:
+	// shader sources
+    static std::string vertexShaderText;
+    static std::string geometryShaderText;
+    static std::string fragmentShaderText;
+
+    CGoGNGLuint m_uniform_lineWidth;
+	CGoGNGLuint m_unif_alpha;
+
+	float m_lineWidth;
+	float m_pixWidth;
+
+    VBO* m_vboPos;
+	VBO* m_vboCol;
+
+	float m_opacity;
+
+	/// clipping
+	CGoGNGLuint m_unif_planeClip;
+	Geom::Vec4f m_planeClip;
+
+	void getLocations();
+
+	void sendParams();
+
+	void restoreUniformsAttribs();
+
+public:
+	ShaderBoldColorLines();
+
+	void setLineWidth(float pix);
+
+	void updatePixelWidth();
+
+	void setOpacity(float op);
+
+	unsigned int setAttributeColor(VBO* vbo);
+
+	unsigned int setAttributePosition(VBO* vbo);
+
+	void setClippingPlane(const Geom::Vec4f& plane);
+	inline void setNoClippingPlane() { setClippingPlane(Geom::Vec4f(0.0f,0.0f,0.0f,0.0f)); }
+
+};
+
+} // namespace Utils
+
+} // namespace CGoGN
+
+#endif

CGoGN/include/Utils/Shaders/shaderBoldColorLines.vert

+// ShaderBoldColorLines::vertexShaderText
+
+ATTRIBUTE vec3 VertexPosition;
+ATTRIBUTE vec3 VertexColor;
+uniform mat4 ModelViewProjectionMatrix;
+VARYING_VERT vec3 vcolor;
+VARYING_VERT vec3 posClip;
+
+INVARIANT_POS;
+void main ()
+{
+	posClip = VertexPosition;
+	vcolor = VertexColor;
+	gl_Position = ModelViewProjectionMatrix * vec4 (VertexPosition, 1.0);
+}

CGoGN/include/Utils/Shaders/shaderBoldLines.frag

+// ShaderBoldLines::fragmentShaderText
+
+PRECISION;
+uniform vec4 lineColor;
+uniform vec4 planeClip;
+VARYING_FRAG vec3 fragClip;
+FRAG_OUT_DEF;
+
+void main()
+{
+	if (dot(planeClip,vec4(fragClip,1.0))>0.0)
+		discard;
+	FRAG_OUT = lineColor;
+}

CGoGN/include/Utils/Shaders/shaderBoldLines.geom

+// ShaderBoldLines::geometryShaderText
+
+uniform float lineWidth;
+VARYING_IN vec3 posClip[];
+VARYING_OUT vec3 fragClip;
+
+void main()
+{
+	vec3 A = POSITION_IN(0).xyz / POSITION_IN(0).w;
+	vec3 B = POSITION_IN(1).xyz / POSITION_IN(1).w;
+
+	vec3 U = normalize(B-A);
+	vec3 V = cross(U,vec3(0.0,0.0,1.0));
+
+	fragClip = posClip[0];
+	gl_Position = vec4(A-U*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(A+V*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(A-V*lineWidth, 1.0);
+	EmitVertex();
+	fragClip = posClip[1];
+	gl_Position = vec4(B+V*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(B-V*lineWidth, 1.0);
+	EmitVertex();
+	gl_Position = vec4(B+U*lineWidth, 1.0);
+	EmitVertex();
+	EndPrimitive();
+}

CGoGN/include/Utils/Shaders/shaderBoldLines.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef __CGOGN_SHADER_BOLDLINES__
+#define __CGOGN_SHADER_BOLDLINES__
+
+#include "Utils/GLSLShader.h"
+#include "Utils/clippingShader.h"
+#include "Geometry/vector_gen.h"
+
+#include "Utils/dll.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+class CGoGN_UTILS_API ShaderBoldLines : public ClippingShader
+{
+protected:
+	// shader sources
+    static std::string vertexShaderText;
+    static std::string geometryShaderText;
+    static std::string fragmentShaderText;
+
+    CGoGNGLuint m_uniform_lineWidth;
+    CGoGNGLuint m_uniform_color;
+
+	float m_lineWidth;
+	float m_pixWidth;
+
+	Geom::Vec4f m_color;
+
+    VBO* m_vboPos;
+
+	/// clipping
+	CGoGNGLuint m_unif_planeClip;
+	Geom::Vec4f m_planeClip;
+
+	void getLocations();
+
+	void sendParams();
+
+	void restoreUniformsAttribs();
+
+public:
+	ShaderBoldLines();
+
+	void setLineWidth(float pix);
+
+	void updatePixelWidth();
+
+	void setColor(const Geom::Vec4f& color);
+
+	unsigned int setAttributePosition(VBO* vbo);
+
+	void setClippingPlane(const Geom::Vec4f& plane);
+	inline void setNoClippingPlane() { setClippingPlane(Geom::Vec4f(0.0f,0.0f,0.0f,0.0f)); }
+
+};
+
+} // namespace Utils
+
+} // namespace CGoGN
+
+#endif

CGoGN/include/Utils/Shaders/shaderBoldLines.vert

+// ShaderBoldLines::vertexShaderText
+
+ATTRIBUTE vec3 VertexPosition;
+uniform mat4 ModelViewProjectionMatrix;
+VARYING_VERT vec3 posClip;
+
+INVARIANT_POS;
+void main ()
+{
+	posClip = VertexPosition;
+	gl_Position = ModelViewProjectionMatrix * vec4 (VertexPosition, 1.0);
+}

CGoGN/src/Utils/Shaders/shaderBoldColorLines.cpp

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+#define CGoGN_UTILS_DLL_EXPORT 1
+#include "Utils/Shaders/shaderBoldColorLines.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+#include "ShaderBoldColorLines.vert"
+#include "ShaderBoldColorLines.geom"
+#include "ShaderBoldColorLines.frag"
+
+
+ShaderBoldColorLines::ShaderBoldColorLines() :
+	m_lineWidth(0.01f),
+	m_opacity(1.0f),
+	m_planeClip(0.0f,0.0f,0.0f,0.0f)
+
+{
+	m_nameVS = "ShaderBoldColorLines_vs";
+	m_nameFS = "ShaderBoldColorLines_fs";
+	m_nameGS = "ShaderBoldColorLines_gs";
+
+	std::string glxvert(GLSLShader::defines_gl());
+	glxvert.append(vertexShaderText);
+
+	std::string glxgeom = GLSLShader::defines_Geom("lines", "triangle_strip", 6);
+	glxgeom.append(geometryShaderText);
+
+	std::string glxfrag(GLSLShader::defines_gl());
+	glxfrag.append(fragmentShaderText);
+
+	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str(), glxgeom.c_str(), GL_LINES, GL_LINE_STRIP,6);
+
+	// get and fill uniforms
+	getLocations();
+	sendParams();
+}
+
+void ShaderBoldColorLines::getLocations()
+{
+	bind();
+	*m_uniform_lineWidth = glGetUniformLocation(this->program_handler(), "lineWidth");
+	*m_unif_planeClip = glGetUniformLocation(this->program_handler(), "planeClip");
+	*m_unif_alpha = glGetUniformLocation(this->program_handler(), "alpha");
+
+	unbind();
+}
+
+void ShaderBoldColorLines::sendParams()
+{
+	bind();
+	glUniform1f(*m_uniform_lineWidth, m_lineWidth);
+	glUniform1f (*m_unif_alpha, m_opacity);
+
+	if (*m_unif_planeClip > 0)
+		glUniform4fv(*m_unif_planeClip, 1, m_planeClip.data());
+
+	unbind();
+}
+
+
+void ShaderBoldColorLines::setLineWidth(float pix)
+{
+	glm::i32vec4 viewport;
+	glGetIntegerv(GL_VIEWPORT, &(viewport[0]));
+	float lw = float((0.5*pix)/double(viewport[2]));
+
+	bind();
+	glUniform1f(*m_uniform_lineWidth, lw);
+	m_lineWidth = lw;
+	m_pixWidth = pix;
+	unbind();
+}
+
+void ShaderBoldColorLines::updatePixelWidth()
+{
+	glm::i32vec4 viewport;
+	glGetIntegerv(GL_VIEWPORT, &(viewport[0]));
+	float lw = float((0.5*m_pixWidth)/double(viewport[2]));
+
+	bind();
+	glUniform1f(*m_uniform_lineWidth, lw);
+	m_lineWidth = lw;
+	unbind();
+}
+
+
+
+unsigned int ShaderBoldColorLines::setAttributeColor(VBO* vbo)
+{
+	m_vboCol = vbo;
+	bind();
+	unsigned int id = bindVA_VBO("VertexColor", vbo);
+	unbind();
+	return id;
+}
+
+unsigned int ShaderBoldColorLines::setAttributePosition(VBO* vbo)
+{
+	m_vboPos = vbo;
+	bind();
+	unsigned int id = bindVA_VBO("VertexPosition", vbo);
+	unbind();
+	return id;
+}
+
+
+
+void ShaderBoldColorLines::restoreUniformsAttribs()
+{
+	getLocations();
+	sendParams();
+
+	bind();
+	bindVA_VBO("VertexPosition", m_vboPos);
+	bindVA_VBO("VertexColor", m_vboCol);
+	unbind();
+}
+
+void ShaderBoldColorLines::setOpacity(float op)
+{
+	m_opacity = op;
+	bind();
+	glUniform1f (*m_unif_alpha, m_opacity);
+	unbind();
+}
+
+void ShaderBoldColorLines::setClippingPlane(const Geom::Vec4f& plane)
+{
+	if (*m_unif_planeClip > 0)
+	{
+		m_planeClip = plane;
+		bind();
+		glUniform4fv(*m_unif_planeClip, 1, plane.data());
+		unbind();
+	}
+}
+
+
+
+} // namespace Utils
+
+} // namespace CGoGN

CGoGN/src/Utils/Shaders/shaderBoldLines.cpp

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, 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.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+#define CGoGN_UTILS_DLL_EXPORT 1
+#include "Utils/Shaders/shaderBoldLines.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+#include "shaderBoldLines.vert"
+#include "shaderBoldLines.geom"
+#include "shaderBoldLines.frag"
+
+
+ShaderBoldLines::ShaderBoldLines() :
+	m_lineWidth(0.01f),
+	m_color	(0.0f, 0.0f, 0.0f, 0.0f),
+	m_planeClip(0.0f,0.0f,0.0f,0.0f)
+{
+	m_nameVS = "ShaderBoldLines_vs";
+	m_nameFS = "ShaderBoldLines_fs";
+	m_nameGS = "ShaderBoldLines_gs";
+
+	std::string glxvert(GLSLShader::defines_gl());
+	glxvert.append(vertexShaderText);
+
+	std::string glxgeom = GLSLShader::defines_Geom("lines", "triangle_strip", 6);
+	glxgeom.append(geometryShaderText);
+
+	std::string glxfrag(GLSLShader::defines_gl());
+	glxfrag.append(fragmentShaderText);
+
+	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str(), glxgeom.c_str(), GL_LINES, GL_LINE_STRIP,6);
+
+	// get and fill uniforms
+	getLocations();
+	sendParams();
+}
+
+void ShaderBoldLines::getLocations()
+{
+	bind();
+	*m_uniform_lineWidth = glGetUniformLocation(this->program_handler(), "lineWidth");
+	*m_uniform_color = glGetUniformLocation(this->program_handler(), "lineColor");
+	*m_unif_planeClip = glGetUniformLocation(this->program_handler(), "planeClip");
+	unbind();
+}
+
+void ShaderBoldLines::sendParams()
+{
+	bind();
+	glUniform1f(*m_uniform_lineWidth, m_lineWidth);
+	glUniform4fv(*m_uniform_color, 1, m_color.data());
+
+	if (*m_unif_planeClip > 0)
+		glUniform4fv(*m_unif_planeClip, 1, m_planeClip.data());
+
+	unbind();
+}
+
+
+void ShaderBoldLines::setLineWidth(float pix)
+{
+	glm::i32vec4 viewport;
+	glGetIntegerv(GL_VIEWPORT, &(viewport[0]));
+	float lw = float((0.5*pix)/double(viewport[2]));
+
+	bind();
+	glUniform1f(*m_uniform_lineWidth, lw);
+	m_lineWidth = lw;
+	m_pixWidth =pix;
+	unbind();
+}
+
+void ShaderBoldLines::updatePixelWidth()
+{
+	glm::i32vec4 viewport;
+	glGetIntegerv(GL_VIEWPORT, &(viewport[0]));
+	float lw = float((0.5*m_pixWidth)/double(viewport[2]));
+
+	bind();
+	glUniform1f(*m_uniform_lineWidth, lw);
+	m_lineWidth = lw;
+	unbind();
+}
+
+
+
+void ShaderBoldLines::setColor(const Geom::Vec4f& color)
+{
+	bind();
+	glUniform4fv(*m_uniform_color, 1, color.data());
+	m_color = color;
+	unbind();
+}
+
+unsigned int ShaderBoldLines::setAttributePosition(VBO* vbo)
+{
+	m_vboPos = vbo;
+	bind();
+	unsigned int id =