GL3 Lines shaders

CGoGN/include/Utils/Shaders/shaderBold3DColorLines.frag

+// ShaderBold3DColorLines::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/shaderBold3DColorLines.geom

+// ShaderBold3DColorLines::geometryShaderText
+
+uniform float lineWidth;
+uniform mat4 ProjectionMatrix;
+
+VARYING_IN vec3 vcolor[];
+VARYING_OUT vec3 fragColor;
+
+VARYING_IN vec3 posClip[];
+VARYING_OUT vec3 fragClip;
+
+
+void main()
+{
+	vec4 Ap = (ProjectionMatrix*POSITION_IN(0));
+	vec4 Bp = (ProjectionMatrix*POSITION_IN(1));
+
+	vec3 U3 = normalize((Bp.xyz/Bp.w - Ap.xyz/Ap.w));
+	vec3 U = vec3(lineWidth*U3);
+	vec3 V = vec3(lineWidth*normalize(vec2(U[1],-U[0])), 0.0);
+
+	fragClip = posClip[0];
+	fragColor = vcolor[0];
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(0).xyz-U, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(0).xyz+V, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(0).xyz-V, 1.0);
+	EmitVertex();
+	fragClip = posClip[1];
+	fragColor = vcolor[1];
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(1).xyz+V, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(1).xyz-V, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(1).xyz+U, 1.0);
+	EmitVertex();
+	EndPrimitive();
+}

CGoGN/include/Utils/Shaders/shaderBold3DColorLines.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_BOLD3DCOLORLINES__
+#define __CGOGN_SHADER_BOLD3DCOLORLINES__
+
+#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 ShaderBold3DColorLines : 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;
+
+    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:
+	ShaderBold3DColorLines();
+
+	void setLineWidth(float pix);
+
+	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/shaderBold3DColorLines.vert

+// ShaderBold3DColorLines::vertexShaderText
+
+ATTRIBUTE vec3 VertexPosition;
+ATTRIBUTE vec3 VertexColor;
+uniform mat4 ModelViewMatrix;
+VARYING_VERT vec3 vcolor;
+VARYING_VERT vec3 posClip;
+
+INVARIANT_POS;
+void main ()
+{
+	posClip = VertexPosition;
+	vcolor = VertexColor;
+	gl_Position = ModelViewMatrix * vec4 (VertexPosition, 1.0);
+}

CGoGN/include/Utils/Shaders/shaderBold3DLines.frag

+// ShaderBold3DLines::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/shaderBold3DLines.geom

+// ShaderBold3DLines::geometryShaderText
+
+uniform mat4 ProjectionMatrix;
+uniform float lineWidth;
+VARYING_IN vec3 posClip[];
+VARYING_OUT vec3 fragClip;
+
+void main()
+{
+	vec4 Ap = (ProjectionMatrix*POSITION_IN(0));
+	vec4 Bp = (ProjectionMatrix*POSITION_IN(1));
+
+	vec3 U3 = normalize((Bp.xyz/Bp.w - Ap.xyz/Ap.w));
+	vec3 U = vec3(lineWidth*U3);
+	vec3 V = vec3(lineWidth*normalize(vec2(U[1],-U[0])), 0.0);
+
+	fragClip = posClip[0];
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(0).xyz-U, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(0).xyz+V, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(0).xyz-V, 1.0);
+	EmitVertex();
+	fragClip = posClip[1];
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(1).xyz+V, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(1).xyz-V, 1.0);
+	EmitVertex();
+	gl_Position = ProjectionMatrix*vec4(POSITION_IN(1).xyz+U, 1.0);
+	EmitVertex();
+	EndPrimitive();
+}

CGoGN/include/Utils/Shaders/shaderBold3DLines.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_BOLD3DLINES__
+#define __CGOGN_SHADER_BOLD3DLINES__
+
+#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 ShaderBold3DLines : 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;
+
+	Geom::Vec4f m_color;
+
+    VBO* m_vboPos;
+
+	/// clipping
+	CGoGNGLuint m_unif_planeClip;
+	Geom::Vec4f m_planeClip;
+
+	void getLocations();
+
+	void sendParams();
+
+	void restoreUniformsAttribs();
+
+public:
+	ShaderBold3DLines();
+
+	void setLineWidth(float pix);
+
+	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/shaderBold3DLines.vert

+// ShaderBold3DLines::vertexShaderText
+
+ATTRIBUTE vec3 VertexPosition;
+uniform mat4 ModelViewMatrix;
+VARYING_VERT vec3 posClip;
+
+INVARIANT_POS;
+void main ()
+{
+	posClip = VertexPosition;
+	gl_Position = ModelViewMatrix * vec4 (VertexPosition, 1.0);
+}

CGoGN/include/Utils/Shaders/shaderBoldColorLines.geom

 // ShaderBoldColorLines::geometryShaderText
 
-uniform vec2 lineWidth;
+uniform vec2 lineWidths;
+uniform mat4 ProjectionMatrix;
 
 VARYING_IN vec3 vcolor[];
 VARYING_OUT vec3 fragColor;
@@ -10,30 +11,49 @@ VARYING_OUT vec3 fragClip;
 
 void main()
 {
-
-	vec3 A = POSITION_IN(0).xyz / abs(POSITION_IN(0).w);
-	vec3 B = POSITION_IN(1).xyz / abs(POSITION_IN(1).w);
-
-	vec3 U = normalize(B-A);
-	vec3 V = cross(U,vec3(0.0,0.0,1.0));
-
-	vec3 LW = vec3(lineWidth,1.0);
-	fragClip = posClip[0];
-	fragColor = vcolor[0];
-	gl_Position = vec4(A-U*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(A+V*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(A-V*LW, 1.0);
-	EmitVertex();
-	fragColor = vcolor[1];
-	fragClip = posClip[1];
-	gl_Position = vec4(B+V*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(B-V*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(B+U*LW, 1.0);
-	EmitVertex();
-
-	EndPrimitive();
+	vec4 A = POSITION_IN(0);
+	vec4 B = POSITION_IN(1);
+	
+//	float nearZ = - ProjectionMatrix[3][2] / (ProjectionMatrix[2][2] - 1.0); 
+	float nearZ = 1.0;
+	if (ProjectionMatrix[2][2] !=  1.0)
+		nearZ = - ProjectionMatrix[3][2] / (ProjectionMatrix[2][2] - 1.0); 
+
+
+	if ((A.z < nearZ) || (B.z < nearZ))
+	{
+		if (A.z >= nearZ)
+			A = B + (A-B)*(nearZ-B.z)/(A.z-B.z);
+		if (B.z >= nearZ)
+			B = A + (B-A)*(nearZ-A.z)/(B.z-A.z);
+
+		A = ProjectionMatrix*A;
+		B = ProjectionMatrix*B;
+		
+		A = A/A.w;
+		B = B/B.w;
+		vec2 U2 = normalize((B.xyz - A.xyz).xy);
+		vec3 U = vec3(lineWidths*U2,0.0);
+		vec3 V = vec3(lineWidths*vec2(U2[1], -U2[0]), 0.0);
+
+		U2 *= (lineWidths[0]+lineWidths[1])/4.0;
+		
+		fragClip = posClip[0];
+		fragColor = vcolor[0];
+		A -= vec4(U2,0.0,0.0);
+		gl_Position = vec4(A.xyz+V, 1.0);
+		EmitVertex();
+		gl_Position = vec4(A.xyz-V, 1.0);
+		EmitVertex();
+
+		fragClip = posClip[1];
+		fragColor = vcolor[1];
+		B += vec4(U2,0.0,0.0);
+		gl_Position = vec4(B.xyz+V, 1.0);
+		EmitVertex();
+		gl_Position = vec4(B.xyz-V, 1.0);
+		EmitVertex();
+		
+		EndPrimitive();
+	}
 }

CGoGN/include/Utils/Shaders/shaderBoldColorLines.h

@@ -49,7 +49,6 @@ protected:
 	CGoGNGLuint m_unif_alpha;
 
 	Geom::Vec2f m_lineWidth;
-	float m_pixWidth;
 
     VBO* m_vboPos;
 	VBO* m_vboCol;
@@ -71,8 +70,6 @@ public:
 
 	void setLineWidth(float pix);
 
-	void updatePixelWidth();
-
 	void setOpacity(float op);
 
 	unsigned int setAttributeColor(VBO* vbo);

CGoGN/include/Utils/Shaders/shaderBoldColorLines.vert

@@ -2,7 +2,7 @@
 
 ATTRIBUTE vec3 VertexPosition;
 ATTRIBUTE vec3 VertexColor;
-uniform mat4 ModelViewProjectionMatrix;
+uniform mat4 ModelViewMatrix;
 VARYING_VERT vec3 vcolor;
 VARYING_VERT vec3 posClip;
 
@@ -11,5 +11,5 @@ void main ()
 {
 	posClip = VertexPosition;
 	vcolor = VertexColor;
-	gl_Position = ModelViewProjectionMatrix * vec4 (VertexPosition, 1.0);
+	gl_Position = ModelViewMatrix * vec4 (VertexPosition, 1.0);
 }

CGoGN/include/Utils/Shaders/shaderBoldLines.geom

 // ShaderBoldLines::geometryShaderText
 
-uniform vec2 lineWidth;
+uniform mat4 ProjectionMatrix;
+uniform vec2 lineWidths;
 VARYING_IN vec3 posClip[];
 VARYING_OUT vec3 fragClip;
 
 void main()
 {
-	vec3 A = POSITION_IN(0).xyz / abs(POSITION_IN(0).w);
-	vec3 B = POSITION_IN(1).xyz / abs(POSITION_IN(1).w);
+	vec4 A = POSITION_IN(0);
+	vec4 B = POSITION_IN(1);
+	
+	float nearZ = 1.0;
+	if (ProjectionMatrix[2][2] !=  1.0)
+		nearZ = - ProjectionMatrix[3][2] / (ProjectionMatrix[2][2] - 1.0); 
 
-	vec3 U = normalize(B-A);
-	vec3 V = cross(U,vec3(0.0,0.0,1.0));
+	if ((A.z < nearZ) || (B.z < nearZ))
+	{
+		if (A.z >= nearZ)
+			A = B + (A-B)*(nearZ-B.z)/(A.z-B.z);
+		if (B.z >= nearZ)
+			B = A + (B-A)*(nearZ-A.z)/(B.z-A.z);
 
-	vec3 LW = vec3(lineWidth,1.0);
-	fragClip = posClip[0];
-	gl_Position = vec4(A-U*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(A+V*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(A-V*LW, 1.0);
-	EmitVertex();
-	fragClip = posClip[1];
-	gl_Position = vec4(B+V*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(B-V*LW, 1.0);
-	EmitVertex();
-	gl_Position = vec4(B+U*LW, 1.0);
-	EmitVertex();
-	EndPrimitive();
+		A = ProjectionMatrix*A;
+		B = ProjectionMatrix*B;
+		
+		A = A/A.w;
+		B = B/B.w;
+		vec2 U2 = normalize((B.xyz - A.xyz).xy);
+		vec3 U = vec3(lineWidths*U2,0.0);
+		vec3 V = vec3(lineWidths*vec2(U2[1], -U2[0]), 0.0);
+
+		U2 *= (lineWidths[0]+lineWidths[1])/4.0;
+		
+		fragClip = posClip[0];
+		A -= vec4(U2,0.0,0.0);
+		gl_Position = vec4(A.xyz+V, 1.0);
+		EmitVertex();
+		gl_Position = vec4(A.xyz-V, 1.0);
+		EmitVertex();
+
+		fragClip = posClip[1];
+		B += vec4(U2,0.0,0.0);
+		gl_Position = vec4(B.xyz+V, 1.0);
+		EmitVertex();
+		gl_Position = vec4(B.xyz-V, 1.0);
+		EmitVertex();
+		
+		EndPrimitive();
+	}
 }

CGoGN/include/Utils/Shaders/shaderBoldLines.h

@@ -49,7 +49,6 @@ protected:
     CGoGNGLuint m_uniform_color;
 
 	Geom::Vec2f m_lineWidth;
-	float m_pixWidth;
 
 	Geom::Vec4f m_color;
 
@@ -70,8 +69,6 @@ public:
 
 	void setLineWidth(float pix);
 
-	void updatePixelWidth();
-
 	void setColor(const Geom::Vec4f& color);
 
 	unsigned int setAttributePosition(VBO* vbo);

CGoGN/include/Utils/Shaders/shaderBoldLines.vert

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

CGoGN/include/Utils/drawer.h

@@ -30,6 +30,7 @@
 #include "Geometry/vector_gen.h"
 #include "Utils/Shaders/shaderColorPerVertex.h"
 #include "Utils/Shaders/shaderBoldColorLines.h"
+#include "Utils/Shaders/shaderBold3DColorLines.h"
 
 namespace CGoGN { namespace Utils { class VBO; } }
 namespace CGoGN { namespace Utils { namespace SVG { class SVGOut ; } } }
@@ -71,21 +72,26 @@ protected:
 	float m_currentSize;
 	GLenum m_compile;
 	Utils::ShaderColorPerVertex* m_shader;
-	Utils::ShaderBoldColorLines* m_shader2;
+	Utils::ShaderBoldColorLines* m_shaderCL;
+	Utils::ShaderBold3DColorLines* m_shader3DCL;
+
+	int m_lineMode;
 
 public:
 
 	/**
 	 * constructor, init all buffers (data and OpenGL) and shader
+	 * @param lineMode 0:simple thin Line / 1:line with possible width /2:3D Lines
 	 * @Warning need OpenGL context
 	 */
-	Drawer();
+	Drawer(int lineMode=0);
 
 	/**
 	 * release buffers and shader
 	 */
 	~Drawer();
 
+
 //	Utils::ShaderColorPerVertex* getShader();
 	std::vector<Utils::GLSLShader*> getShaders();
 

CGoGN/src/Utils/Shaders/shaderBold3DColorLines.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                                        *