remove clipping using std::regex for gcc 4.8 (see volumeExplorer for clippig topo)

Apps/Examples/CMakeLists.txt

@@ -14,7 +14,7 @@ add_executable( frame_manip frame_manip.cpp ${frame_manip_moc} )
 target_link_libraries( frame_manip ${CGoGN_LIBS} ${CGoGN_EXT_LIBS} )
 #need to define that we use Qt (only once per cmake directory!)
 qt_use_cgogn_modules(frame_manip)
-		
+
 qt_wrap_cpp( texturesExample_moc texturesExample.h )
 add_executable( texturesExample texturesExample.cpp ${texturesExample_moc} )
 target_link_libraries( texturesExample ${CGoGN_LIBS} ${CGoGN_EXT_LIBS}  )
@@ -40,10 +40,12 @@ qt_wrap_cpp( viewer_moc viewer.h )
 add_executable( viewer viewer.cpp ${viewer_moc} ${viewer_ui} )
 target_link_libraries( viewer ${CGoGN_LIBS} ${NUMERICAL_LIBS} ${CGoGN_EXT_LIBS} )
 
-qt_wrap_ui( clipping_ui clipping.ui )
-qt_wrap_cpp( clipping_moc clipping.h )
-add_executable( clipping clipping.cpp ${clipping_ui} ${clipping_moc} )
-target_link_libraries( clipping	${CGoGN_LIBS}  ${CGoGN_EXT_LIBS} )
+IF (CGoGN_GCC_4_9)
+	qt_wrap_ui( clipping_ui clipping.ui )
+	qt_wrap_cpp( clipping_moc clipping.h )
+	add_executable( clipping clipping.cpp ${clipping_ui} ${clipping_moc} )
+	target_link_libraries( clipping	${CGoGN_LIBS}  ${CGoGN_EXT_LIBS} )
+ENDIF()
 
 qt_wrap_ui( volumeExplorer_ui volumeExplorer.ui )
 qt_wrap_cpp( volumeExplorer_moc volumeExplorer.h )

Apps/Examples/volumeExplorer.cpp

@@ -73,16 +73,12 @@ void MyQT::clipping_onoff(bool x)
 		Geom::Vec3f normal = m_PlanePick->getAxisScale(2, pipo); // 2 = Z axis = plane normal
 		float d = -(pos*normal);
 		m_explode_render->setClippingPlane(Geom::Vec4f(normal[0],normal[1],normal[2],d));
-		m_sh1->setClipPlaneParamsAll(clip_id1, normal, pos);
-		m_sh2->setClipPlaneParamsAll(clip_id2, normal, pos);
+		m_topo_render->setClippingPlane(Geom::Vec4f(normal[0],normal[1],normal[2],d));
 	}
 	else
 	{
 		m_explode_render->setNoClippingPlane();
-		m_sh1->setClipPlaneParamsAll(clip_id1, Geom::Vec3f(0,0,1), Geom::Vec3f(0,0,999999.9f));
-		m_sh2->setClipPlaneParamsAll(clip_id2, Geom::Vec3f(0,0,1), Geom::Vec3f(0,0,999999.9f));
-		m_sh1->setClipColorAttenuationFactorRelative(0.0f,0.0f);
-		m_sh2->setClipColorAttenuationFactorRelative(0.0f,0.0f);
+		m_topo_render->setNoClippingPlane();
 	}
 	updateGL();
 }
@@ -206,7 +202,7 @@ void MyQT::cb_initGL()
 {
 	// create the renders
 	m_topo_render = new Algo::Render::GL2::Topo3RenderMap<PFP>();
-    m_explode_render = new Algo::Render::GL2::ExplodeVolumeRender(true,true,true);
+	m_explode_render = new Algo::Render::GL2::ExplodeVolumeRender(true,true,true);
 
 //	SelectorDartNoBoundary<MAP> nb(myMap);
 	m_topo_render->updateData(myMap, position,  0.8f, 0.8f, 0.8f);
@@ -217,8 +213,6 @@ void MyQT::cb_initGL()
 	m_explode_render->setBackColor(Geom::Vec4f(0.9f,0.9f,0.9f,1.0f));
 	m_explode_render->setColorLine(Geom::Vec4f(0.8f,0.2f,0.2f,1.0f));
 
-	m_sh1 = static_cast<Utils::ClippingShader*>(m_topo_render->shader1());
-	m_sh2 = static_cast<Utils::ClippingShader*>(m_topo_render->shader2());
 
 	registerShader(m_explode_render->shaderFaces());
 	registerShader(m_explode_render->shaderLines());
@@ -227,15 +221,6 @@ void MyQT::cb_initGL()
 	m_frame = new Utils::FrameManipulator();
 	m_frame->setSize(m_WidthObj/2.0f);
 
-
-	m_sh1->insertClippingCode();
-	m_sh2->insertClippingCode();
-
-	clip_id1 = m_sh1->addClipPlane();
-	clip_id2 = m_sh2->addClipPlane();
-
-	m_sh1->setClipPlaneParamsAll(clip_id1, Geom::Vec3f(0,0,1), m_PosObj);
-	m_sh2->setClipPlaneParamsAll(clip_id2, Geom::Vec3f(0,0,1), m_PosObj);
 	m_explode_render->setClippingPlane(Geom::Vec4f(0,0,1,m_PosObj*Geom::Vec3f(0,0,-1)));
 
 }
@@ -370,9 +355,8 @@ void  MyQT::cb_mouseMove(int buttons, int x, int y)
 	Geom::Vec3f normal = m_PlanePick->getAxisScale(2, pipo); // 2 = Z axis = plane normal
 	float d = -(pos*normal);
 	m_explode_render->setClippingPlane(Geom::Vec4f(normal[0],normal[1],normal[2],d));
+	m_topo_render->setClippingPlane(Geom::Vec4f(normal[0],normal[1],normal[2],d));
 
-	m_sh1->setClipPlaneParamsAll(clip_id1, normal, pos);
-	m_sh2->setClipPlaneParamsAll(clip_id2, normal, pos);
 
 	m_begX = x;
 	m_begY = y;
@@ -484,28 +468,6 @@ int main(int argc, char **argv)
 	dock.slider_explode_face->setValue(100);
 	sqt.clipping_onoff(true);
 
-//	Utils::Chrono ch;
-//	ch.start();
-//	float vol = Algo::Geometry::Parallel::totalVolume<PFP>(myMap, position);
-//	vol += Algo::Geometry::Parallel::totalVolume<PFP>(myMap, position);
-//	vol += Algo::Geometry::Parallel::totalVolume<PFP>(myMap, position);
-//	vol += Algo::Geometry::Parallel::totalVolume<PFP>(myMap, position);
-//	std::cout << ch.elapsed()<< " ms //  val="<<vol<< std::endl;
-
-//	std::cout << "Compute Volume ->"<< std::endl;
-//	ch.start();
-//	vol = Algo::Geometry::totalVolume<PFP>(myMap, position);
-//	std::cout << ch.elapsed()<< " ms  val="<<vol<< std::endl;
-//	ch.start();
-//	vol += Algo::Geometry::totalVolume<PFP>(myMap, position);
-//	std::cout << ch.elapsed()<< " ms  val="<<vol<< std::endl;
-//	ch.start();
-//	vol += Algo::Geometry::totalVolume<PFP>(myMap, position);
-//	std::cout << ch.elapsed()<< " ms  val="<<vol<< std::endl;
-//	ch.start();
-//	vol += Algo::Geometry::totalVolume<PFP>(myMap, position);
-//	std::cout << ch.elapsed()<< " ms  val="<<vol<< std::endl;
-
 	// et on attend la fin.
 	return app.exec();
 }

Apps/Examples/volumeExplorer.h

@@ -93,8 +93,8 @@ class MyQT: public Utils::QT::SimpleQGLV
 	int clip_id2;
 
 	// shader of toporender3
-	Utils::ClippingShader* m_sh1;
-	Utils::ClippingShader* m_sh2;
+//	Utils::ClippingShader* m_sh1;
+//	Utils::ClippingShader* m_sh2;
 	Utils::Chrono m_frame_ch;
 	unsigned int m_nbFrames;
 

CGoGN/include/Algo/Render/GL2/topo3Render.h

@@ -158,6 +158,10 @@ public:
 	Utils::GLSLShader* shader1() { return static_cast<Utils::GLSLShader*>(m_shader1); }
 	Utils::GLSLShader* shader2() { return static_cast<Utils::GLSLShader*>(m_shader2); }
 
+
+	void setClippingPlane(const Geom::Vec4f& plane);
+	void setNoClippingPlane();
+
 	/**
 	 * set the with of line use to draw darts (default val is 2)
 	 * @param dw width

CGoGN/include/Algo/Render/GL2/topo3Render.hpp

@@ -71,8 +71,8 @@ Topo3Render<PFP>::Topo3Render():
 	m_vbo3->setDataSize(3);
 	m_vbo4->setDataSize(3);
 
-	m_shader1 = new Utils::ShaderSimpleColor();
-	m_shader2 = new Utils::ShaderColorPerVertex();
+	m_shader1 = new Utils::ShaderSimpleColor(true,false);
+	m_shader2 = new Utils::ShaderColorPerVertex(true,false);
 
 	// binding VBO - VA
 	m_vaId = m_shader1->setAttributePosition(m_vbo1);
@@ -109,6 +109,22 @@ Topo3Render<PFP>::~Topo3Render()
 		delete[] m_bufferDartPosition;
 }
 
+
+template<typename PFP>
+void Topo3Render<PFP>::setClippingPlane(const Geom::Vec4f& plane)
+{
+	m_shader1->setClippingPlane(plane);
+	m_shader2->setClippingPlane(plane);
+}
+
+template<typename PFP>
+void Topo3Render<PFP>::setNoClippingPlane()
+{
+	this->setClippingPlane(Geom::Vec4f(0.0f,0.0f,0.0f,0.0f));
+}
+
+
+
 template<typename PFP>
 void Topo3Render<PFP>::setDartWidth(float dw)
 {

CGoGN/include/Algo/Render/GL2/topoPrimalRender.h

@@ -148,6 +148,10 @@ public:
 	Utils::GLSLShader* shader1() { return static_cast<Utils::GLSLShader*>(m_shader1); }
 	Utils::GLSLShader* shader2() { return static_cast<Utils::GLSLShader*>(m_shader2); }
 
+	void setClippingPlane(const Geom::Vec4f& plane);
+	void setNoClippingPlane();
+
+
 	/**
 	 * set the with of line use to draw darts (default val is 2)
 	 * @param dw width

CGoGN/include/Algo/Render/GL2/topoPrimalRender.hpp

@@ -62,8 +62,8 @@ TopoPrimalRender<PFP>::TopoPrimalRender():
 	m_vbo1->setDataSize(3);
 	m_vbo2->setDataSize(3);
 
-	m_shader1 = new Utils::ShaderSimpleColor();
-	m_shader2 = new Utils::ShaderColorPerVertex();
+	m_shader1 = new Utils::ShaderSimpleColor(true,false);
+	m_shader2 = new Utils::ShaderColorPerVertex(true,false);
 
 	// binding VBO - VA
 	m_vaId = m_shader1->setAttributePosition(m_vbo1);
@@ -98,6 +98,20 @@ TopoPrimalRender<PFP>::~TopoPrimalRender()
 		delete[] m_bufferDartPosition;
 }
 
+template<typename PFP>
+void TopoPrimalRender<PFP>::setClippingPlane(const Geom::Vec4f& plane)
+{
+	m_shader1->setClippingPlane(plane);
+	m_shader2->setClippingPlane(plane);
+}
+
+template<typename PFP>
+void TopoPrimalRender<PFP>::setNoClippingPlane()
+{
+	this->setClippingPlane(Geom::Vec4f(0.0f,0.0f,0.0f,0.0f));
+}
+
+
 template <typename PFP>
 void TopoPrimalRender<PFP>::setDartWidth(float dw)
 {

CGoGN/include/Algo/Render/GL2/topoRender.h

@@ -177,6 +177,10 @@ public:
 	*/
 	~TopoGenRender();
 
+	void setClippingPlane(const Geom::Vec4f& plane);
+	void setNoClippingPlane();
+
+
 	/**
 	 * set the with of line use to draw darts (default val is 2)
 	 * @param dw width

CGoGN/include/Utils/Shaders/shaderColorPerVertex.h

@@ -43,6 +43,8 @@ protected:
 	// shader sources
     static std::string vertexShaderText;
     static std::string fragmentShaderText;
+	static std::string vertexShaderClipText;
+	static std::string fragmentShaderClipText;
 
     VBO* m_vboPos;
     VBO* m_vboCol;
@@ -50,10 +52,15 @@ protected:
     CGoGNGLuint m_unif_alpha;
     float m_opacity;
 
+	/// clipping
+	CGoGNGLuint m_unif_planeClip;
+	Geom::Vec4f m_planeClip;
+
+
     void restoreUniformsAttribs();
 
 public:
-    ShaderColorPerVertex(bool black_is_transparent = false);
+	ShaderColorPerVertex(bool withClipping = false, bool black_is_transparent = false);
 
 	/**
 	 * set the VBO of position (vec3)
@@ -71,6 +78,8 @@ public:
 	void setOpacity(float op);
 
 	float getOpacity() const  { return m_opacity;}
+
+	void setClippingPlane(const Geom::Vec4f& plane);
 };
 
 } // namespace Utils

CGoGN/include/Utils/Shaders/shaderColorPerVertexClip.frag

+// ShaderColorPerVertex::fragmentShaderClipText
+
+PRECISION;
+VARYING_FRAG vec3 color;
+VARYING_FRAG vec3 posClip;
+
+uniform vec4 planeClip;
+uniform float alpha;
+
+FRAG_OUT_DEF;
+
+void main()
+{
+	if (dot(planeClip,vec4(posClip,1.0))>0.0)
+		discard;
+
+#ifdef BLACK_TRANSPARENCY
+	if (dot(color,color) == 0.0)
+		discard;
+#endif
+	FRAG_OUT=vec4(color,alpha);
+}

CGoGN/include/Utils/Shaders/shaderColorPerVertexClip.vert

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

CGoGN/include/Utils/Shaders/shaderSimpleColor.h

@@ -43,22 +43,30 @@ protected:
 	// shader sources
 	static std::string vertexShaderText;
 	static std::string fragmentShaderText;
+	static std::string vertexShaderClipText;
+	static std::string fragmentShaderClipText;
 
-	// uniform locations
+	/// color
 	CGoGNGLuint m_unif_color;
-
 	Geom::Vec4f m_color;
 
+	/// clipping
+	CGoGNGLuint m_unif_planeClip;
+	Geom::Vec4f m_planeClip;
+
+
 	VBO* m_vboPos;
 
 	void restoreUniformsAttribs();
 
 public:
-	ShaderSimpleColor(bool back_is_transparent = false);
+	ShaderSimpleColor(bool withClipping = false, bool back_is_transparent = false);
 
 	void setColor(const Geom::Vec4f& color);
 
 	unsigned int setAttributePosition(VBO* vbo);
+
+	void setClippingPlane(const Geom::Vec4f& plane);
 };
 
 } // namespace Utils

CGoGN/include/Utils/Shaders/shaderSimpleColorClip.frag

+// ShaderSimpleColor::fragmentShaderClipText
+
+PRECISION;
+uniform vec4 color;
+
+uniform vec4 planeClip;
+VARYING_FRAG vec3 posClip;
+
+FRAG_OUT_DEF;
+void main()
+{
+	if (dot(planeClip,vec4(posClip,1.0))>0.0)
+		discard;
+
+#ifdef BLACK_TRANSPARENCY
+	if (dot(color,color) == 0.0)
+		discard;
+#endif
+	FRAG_OUT=color;
+}

CGoGN/include/Utils/Shaders/shaderSimpleColorClip.vert

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

CGoGN/src/Algo/Render/topoGenRender.cpp

@@ -66,7 +66,7 @@ TopoGenRender::TopoGenRender(float bs):
 	m_vbo1->setDataSize(3);
 	m_vbo2->setDataSize(3);
 
-	m_shader1 = new Utils::ShaderSimpleColor();
+	m_shader1 = new Utils::ShaderSimpleColor(true,false);
 
 	// binding VBO - VA
 	m_vaId = m_shader1->setAttributePosition(m_vbo1);
@@ -135,6 +135,19 @@ TopoGenRender::~TopoGenRender()
 
 
 
+void TopoGenRender::setClippingPlane(const Geom::Vec4f& plane)
+{
+	m_shader1->setClippingPlane(plane);
+}
+
+
+void TopoGenRender::setNoClippingPlane()
+{
+	this->setClippingPlane(Geom::Vec4f(0.0f,0.0f,0.0f,0.0f));
+}
+
+
+
 void TopoGenRender::setDartWidth(float dw)
 {
 	m_topo_dart_width = dw;

CGoGN/src/Utils/Shaders/shaderColorPerVertex.cpp

@@ -33,46 +33,49 @@ namespace Utils
 
 #include "shaderColorPerVertex.vert"
 #include "shaderColorPerVertex.frag"
+#include "shaderColorPerVertexClip.vert"
+#include "shaderColorPerVertexClip.frag"
 
-//std::string ShaderColorPerVertex::vertexShaderText =
-//		"ATTRIBUTE vec3 VertexPosition;\n"
-//		"ATTRIBUTE vec3 VertexColor;\n"
-//		"uniform mat4 ModelViewProjectionMatrix;\n"
-//		"VARYING_VERT vec3 color;\n"
-//		"INVARIANT_POS;\n"
-//		"void main ()\n"
-//		"{\n"
-//		"	gl_Position = ModelViewProjectionMatrix * vec4 (VertexPosition, 1.0);\n"
-//		"	color = VertexColor;\n"
-//		"}";
-//
-//
-//std::string ShaderColorPerVertex::fragmentShaderText =
-//		"PRECISION;\n"
-//		"VARYING_FRAG vec3 color;\n"
-//		"FRAG_OUT_DEF;\n"
-//		"void main()\n"
-//		"{\n"
-//		"	FRAG_OUT=vec4(color,0.0);\n"
-//		"}";
-
-
-ShaderColorPerVertex::ShaderColorPerVertex(bool black_is_transparent)
+
+ShaderColorPerVertex::ShaderColorPerVertex(bool withClipping, bool black_is_transparent)
 {
-	m_nameVS = "ShaderColorPerVertex_vs";
-	m_nameFS = "ShaderColorPerVertex_fs";
-	m_nameGS = "ShaderColorPerVertex_gs";
+	if (withClipping)
+	{
+		m_nameVS = "ShaderColorPerVertexClip_vs";
+		m_nameFS = "ShaderColorPerVertexClip_fs";
+		m_nameGS = "";
+
+		std::string glxvert(*GLSLShader::DEFINES_GL);
+		glxvert.append(vertexShaderClipText);
+
+		std::string glxfrag(*GLSLShader::DEFINES_GL);
+		if (black_is_transparent)
+			glxfrag.append("#define BLACK_TRANSPARENCY 1\n");
+		glxfrag.append(fragmentShaderClipText);
+
+		loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
 
-	std::string glxvert(*GLSLShader::DEFINES_GL);
-	glxvert.append(vertexShaderText);
+		*m_unif_planeClip = glGetUniformLocation(this->program_handler(),"planeClip");
+		setClippingPlane(Geom::Vec4f (0.0f, 0.0f, 0.0f, 0.0f));
 
-	std::string glxfrag(*GLSLShader::DEFINES_GL);
-	if (black_is_transparent)
-		glxfrag.append("#define BLACK_TRANSPARENCY 1\n");
-	glxfrag.append(fragmentShaderText);
+	}
+	else
+	{
+		m_nameVS = "ShaderColorPerVertex_vs";
+		m_nameFS = "ShaderColorPerVertex_fs";
+		m_nameGS = "ShaderColorPerVertex_gs";
 
-	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
+		std::string glxvert(*GLSLShader::DEFINES_GL);
+		glxvert.append(vertexShaderText);
 
+		std::string glxfrag(*GLSLShader::DEFINES_GL);
+		if (black_is_transparent)
+			glxfrag.append("#define BLACK_TRANSPARENCY 1\n");
+		glxfrag.append(fragmentShaderText);
+
+		loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
+
+	}
 	bind();
 	*m_unif_alpha = glGetUniformLocation(this->program_handler(), "alpha");
 	glUniform1f (*m_unif_alpha, 1.0f);
@@ -99,12 +102,14 @@ unsigned int ShaderColorPerVertex::setAttributeColor(VBO* vbo)
 	return id;
 }
 
+
 void ShaderColorPerVertex::restoreUniformsAttribs()
 {
 	bind();
 	bindVA_VBO("VertexPosition", m_vboPos);
 	bindVA_VBO("VertexColor", m_vboCol);
 	glUniform1f (*m_unif_alpha, m_opacity);
+	glUniform4fv(*m_unif_planeClip, 1, m_planeClip.data());
 	unbind();
 }
 
@@ -116,6 +121,16 @@ void ShaderColorPerVertex::setOpacity(float op)
 	unbind();
 }
 
+void ShaderColorPerVertex::setClippingPlane(const Geom::Vec4f& plane)
+{
+	m_planeClip = plane;
+	bind();
+	glUniform4fv(*m_unif_planeClip, 1, plane.data());
+	unbind();
+}
+
+
+
 } // namespace Utils
 
 } // namespace CGoGN

CGoGN/src/Utils/Shaders/shaderSimpleColor.cpp

@@ -32,47 +32,53 @@ namespace Utils
 
 #include "shaderSimpleColor.vert"
 #include "shaderSimpleColor.frag"
+#include "shaderSimpleColorClip.vert"
+#include "shaderSimpleColorClip.frag"
 
-//std::string ShaderSimpleColor::vertexShaderText =
-//		"ATTRIBUTE vec3 VertexPosition, VertexNormal;\n"
-//		"uniform mat4 ModelViewProjectionMatrix;\n"
-////		"INVARIANT_POS;\n"
-//		"void main ()\n"
-//		"{\n"
-//		"	gl_Position = ModelViewProjectionMatrix * vec4 (VertexPosition, 1.0);\n"
-//		"}";
-//
-//
-//std::string ShaderSimpleColor::fragmentShaderText =
-//		"PRECISION;\n"
-//		"uniform vec4 color;\n"
-//		"FRAG_OUT_DEF;\n"
-//		"void main()\n"
-//		"{\n"
-//		"	FRAG_OUT = color;\n"
-//		"}";
-
-
-ShaderSimpleColor::ShaderSimpleColor(bool black_is_transparent)
-{
-	m_nameVS = "ShaderSimpleColor_vs";
-	m_nameFS = "ShaderSimpleColor_fs";
-	m_nameGS = "ShaderSimpleColor_gs";
-
-	// chose GL defines (2 or 3)
-	// and compile shaders
-	std::string glxvert(*GLSLShader::DEFINES_GL);
-	glxvert.append(vertexShaderText);
-
-	std::string glxfrag(*GLSLShader::DEFINES_GL);
-	if (black_is_transparent)
-		glxfrag.append("#define BLACK_TRANSPARENCY 1\n");
-	glxfrag.append(fragmentShaderText);
 
-	loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
+ShaderSimpleColor::ShaderSimpleColor(bool withClipping, bool black_is_transparent)
+{
+	if (withClipping)
+	{
+		m_nameVS = "ShaderSimpleColorClip_vs";
+		m_nameFS = "ShaderSimpleColorClip_fs";
+		m_nameGS = "";
+
+		// chose GL defines (2 or 3)
+		// and compile shaders
+		std::string glxvert(*GLSLShader::DEFINES_GL);
+		glxvert.append(vertexShaderClipText);
+
+		std::string glxfrag(*GLSLShader::DEFINES_GL);
+		if (black_is_transparent)
+			glxfrag.append("#define BLACK_TRANSPARENCY 1\n");
+		glxfrag.append(fragmentShaderClipText);
+
+		loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
+
+		*m_unif_planeClip = glGetUniformLocation(this->program_handler(),"planeClip");
+		setClippingPlane(Geom::Vec4f (0.0f, 0.0f, 0.0f, 0.0f));
+	}
+	else
+	{
+		m_nameVS = "ShaderSimpleColor_vs";
+		m_nameFS = "ShaderSimpleColor_fs";
+		m_nameGS = "";
+
+		// chose GL defines (2 or 3)
+		// and compile shaders
+		std::string glxvert(*GLSLShader::DEFINES_GL);
+		glxvert.append(vertexShaderText);
+
+		std::string glxfrag(*GLSLShader::DEFINES_GL);
+		if (black_is_transparent)
+			glxfrag.append("#define BLACK_TRANSPARENCY 1\n");
+		glxfrag.append(fragmentShaderText);
+
+		loadShadersFromMemory(glxvert.c_str(), glxfrag.c_str());
+	}
 
 	*m_unif_color = glGetUniformLocation(this->program_handler(),"color");
-
 	//Default values
 	Geom::Vec4f color(0.1f, 0.9f, 0.1f, 0.0f);
 	setColor(color);
@@ -86,6 +92,16 @@ void ShaderSimpleColor::setColor(const Geom::Vec4f& color)
 	unbind();
 }
 
+
+void ShaderSimpleColor::setClippingPlane(const Geom::Vec4f& plane)
+{
+	m_planeClip = plane;
+	bind();
+	glUniform4fv(*m_unif_planeClip, 1, plane.data());
+	unbind();
+}
+
+
 unsigned int ShaderSimpleColor::setAttributePosition(VBO* vbo)
 {
 	m_vboPos = vbo;
@@ -100,6 +116,7 @@ void ShaderSimpleColor::restoreUniformsAttribs()
 	*m_unif_color = glGetUniformLocation(this->program_handler(), "color");
 	bind();
 	glUniform4fv(*m_unif_color, 1, m_color.data());
+	glUniform4fv(*m_unif_planeClip, 1, m_planeClip.data());
 	bindVA_VBO("VertexPosition", m_vboPos);