Subversion Repositories gelsvn

/* ----------------------------------------------------------------------- *

/* ----------------------------------------------------------------------- *

 * This file is part of GEL, http://www.imm.dtu.dk/GEL

 * This file is part of GEL, http://www.imm.dtu.dk/GEL

 * Copyright (C) the authors and DTU Informatics

 * Copyright (C) the authors and DTU Informatics

 * For license and list of authors, see ../../doc/intro.pdf

 * For license and list of authors, see ../../doc/intro.pdf

 * ----------------------------------------------------------------------- */

 * ----------------------------------------------------------------------- */

/**

/**

 * @file ManifoldRenderer.h

 * @file ManifoldRenderer.h

 * @brief Tool for rendering a HMesh Manifold.

 * @brief Tool for rendering a HMesh Manifold.

 */

 */

#ifndef __MESHEDIT_RENDERER_H__

#ifndef __MESHEDIT_RENDERER_H__

#define __MESHEDIT_RENDERER_H__

#define __MESHEDIT_RENDERER_H__

namespace HMesh

namespace HMesh

{

{

    template<typename ITEM>

    template<typename ITEM>

    class VertexAttributeVector;

    class VertexAttributeVector;

}

}

namespace GLGraphics {

namespace GLGraphics {

/** Ancestral class for Manifold rendering. Do not use directly. Its only purpose is to

/** Ancestral class for Manifold rendering. Do not use directly. Its only purpose is to

	create a display list and remove it when the object is destroyed. This is an example

	create a display list and remove it when the object is destroyed. This is an example

	of the RAII "resource acquisition is initialization" idiom */

	of the RAII "resource acquisition is initialization" idiom */

class ManifoldRenderer

class ManifoldRenderer

	{

	{

	protected:

	protected:

		GLuint display_list;

		GLuint display_list;

	public:

	public:

		ManifoldRenderer(): display_list(glGenLists(1))	{}

		ManifoldRenderer(): display_list(glGenLists(1))	{}

		virtual ~ManifoldRenderer()

		virtual ~ManifoldRenderer()

		{

		{

			glDeleteLists(display_list, 1);

			glDeleteLists(display_list, 1);

		}

		}

		virtual void draw()

		virtual void draw()

		{

		{

			glCallList(display_list);

			glCallList(display_list);

		}

		}

	};

	};

/** Wireframe rendering. This is a nasty complex class that relies on other classes. The trouble

/** Wireframe rendering. This is a nasty complex class that relies on other classes. The trouble

	is that for non-triangle meshes, we need to use another approach than for triangle meshes.

	is that for non-triangle meshes, we need to use another approach than for triangle meshes.

	This class is really a front end for a couple of other classes. */

	This class is really a front end for a couple of other classes. */

class WireframeRenderer: public ManifoldRenderer

class WireframeRenderer: public ManifoldRenderer

	{

	{

		GLGraphics::IDBufferWireframeRenderer* idbuff_renderer;

		GLGraphics::IDBufferWireframeRenderer* idbuff_renderer;

		int maximum_face_valency(const HMesh::Manifold& m);

		int maximum_face_valency(const HMesh::Manifold& m);

	public:

	public:

		~WireframeRenderer()

		~WireframeRenderer()

		{

		{

			delete idbuff_renderer;

			delete idbuff_renderer;

		}

		}

		WireframeRenderer(HMesh::Manifold& m, bool flat);

		WireframeRenderer(HMesh::Manifold& m, bool flat);

		void draw();

		void draw();

	};

	};

/** SimpleShaderRenderer is a very basic class for drawing a Manifold with shading.

/** SimpleShaderRenderer is a very basic class for drawing a Manifold with shading.

	It is a convenient way to draw a surface using vertex and fragment shaders since it takes

	It is a convenient way to draw a surface using vertex and fragment shaders since it takes

	care of initializing the shaders and producing a display list for the geometry. 

	care of initializing the shaders and producing a display list for the geometry. 

	Geometry shaders typically add more complexity and are left out of this class, so you cannot add a

	Geometry shaders typically add more complexity and are left out of this class, so you cannot add a

	geometry shader.

	geometry shader.

	While this class can be used directly, the normal procedure is to inherit from SimpleShaderRenderer

	While this class can be used directly, the normal procedure is to inherit from SimpleShaderRenderer

	and then pass the shaders to the constructor. The strings defining the shaders would fit

	and then pass the shaders to the constructor. The strings defining the shaders would fit

	nicely as static constant strings (see e.g. ToonRenderer or GlazedRenderer) in your inherited class.

	nicely as static constant strings (see e.g. ToonRenderer or GlazedRenderer) in your inherited class.

	If you need to define more attributes or uniforms, you need to take charge. Your inherited class's 

	If you need to define more attributes or uniforms, you need to take charge. Your inherited class's 

	constructor should then use the default constructor of SimpleShaderRenderer. You can call init_shaders

	constructor should then use the default constructor of SimpleShaderRenderer. You can call init_shaders

	to initialize the shaders and then compile the display list yourself with the needed uniforms and

	to initialize the shaders and then compile the display list yourself with the needed uniforms and

	attributes - rather than calling compile_display_list which only puts vertices and normals in the list. 

	attributes - rather than calling compile_display_list which only puts vertices and normals in the list. 

 */

 */

class SimpleShaderRenderer: public ManifoldRenderer

class SimpleShaderRenderer: public ManifoldRenderer

	{

	{

		/// Compile the vertex and fragment shaders and link to form shader program.

		/// Compile the vertex and fragment shaders and link to form shader program.

		void init_shaders(const std::string& vss, 

		void init_shaders(const std::string& vss, 

						  const std::string& fss);

						  const std::string& fss);

		/// Produce a display list containing geometry and normals (which may be smooth or per face).

		/// Produce a display list containing geometry and normals (which may be smooth or per face).

		void compile_display_list(const HMesh::Manifold& m, bool smooth);

		void compile_display_list(const HMesh::Manifold& m, bool smooth);

	protected:

	protected:

		GLuint prog,vs,fs;

		GLuint prog,vs,fs;

	public:

	public:

		/// This constructor simply calls init_shaders and then compile_display_list.

		/// This constructor simply calls init_shaders and then compile_display_list.

		SimpleShaderRenderer(const HMesh::Manifold& m, 

		SimpleShaderRenderer(const HMesh::Manifold& m, 

							bool smooth, 

							bool smooth, 

							const std::string& vss, 

							const std::string& vss, 

							const std::string& fss)

							const std::string& fss)

		{

		{

			init_shaders(vss,fss);

			init_shaders(vss,fss);

			compile_display_list(m, smooth);

			compile_display_list(m, smooth);

		}

		}

		/** This constructor simply initializes the shaders. It does not create the display list.

		/** This constructor simply initializes the shaders. It does not create the display list.

			Use if you shader has extra attributes. */

			Use if you shader has extra attributes. */

		SimpleShaderRenderer(const std::string& vss, 

		SimpleShaderRenderer(const std::string& vss, 

							 const std::string& fss) {init_shaders(vss,fss);}

							 const std::string& fss) {init_shaders(vss,fss);}

		/// Releases the program and shaders.

		/// Releases the program and shaders.

		~SimpleShaderRenderer()

		~SimpleShaderRenderer()

		{

		{

			glDeleteProgram(prog);

			glDeleteProgram(prog);

			glDeleteShader(vs);

			glDeleteShader(vs);

			glDeleteShader(fs);

			glDeleteShader(fs);

		}

		}

		/// Do the actual drawing. Simply calls the display list if this function is not overloaded.

		/// Do the actual drawing. Simply calls the display list if this function is not overloaded.

		virtual void draw();

		virtual void draw();

	};

	};

/** Ugly basic gouraud rendering. This class uses OpenGL's fixed function pipeline. */

/** Ugly basic gouraud rendering. This class uses OpenGL's fixed function pipeline. */

class NormalRenderer: public SimpleShaderRenderer

class NormalRenderer: public SimpleShaderRenderer

{

{

    const static std::string vss;

    const static std::string vss;

    const static std::string fss;

    const static std::string fss;

public:

public:

    NormalRenderer(const HMesh::Manifold& m, bool smooth):

    NormalRenderer(const HMesh::Manifold& m, bool smooth):

    SimpleShaderRenderer(m, smooth, vss, fss) {}

    SimpleShaderRenderer(m, smooth, vss, fss) {}

};

};

/** Render reflection lines. This class renders the object as if it is specular and inside

/** Render reflection lines. This class renders the object as if it is specular and inside

	an infinitely long, vertical cylinder with white strips (also vertical). Useful if you

	an infinitely long, vertical cylinder with white strips (also vertical). Useful if you

	want to see whether the surface is smooth or has kinks. */

	want to see whether the surface is smooth or has kinks. */

class ReflectionLineRenderer: public SimpleShaderRenderer

class ReflectionLineRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		ReflectionLineRenderer(const HMesh::Manifold& m, bool smooth):

		ReflectionLineRenderer(const HMesh::Manifold& m, bool smooth):

			SimpleShaderRenderer(m, smooth, vss, fss) {}

			SimpleShaderRenderer(m, smooth, vss, fss) {}

	};

	};

/** Render isophotes with respect to a lightsource in the eye. Useful if you

/** Render isophotes with respect to a lightsource in the eye. Useful if you

 want to see whether the surface is smooth or has kinks. */

 want to see whether the surface is smooth or has kinks. */

class IsophoteLineRenderer: public SimpleShaderRenderer

class IsophoteLineRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		IsophoteLineRenderer(const HMesh::Manifold& m, bool smooth):

		IsophoteLineRenderer(const HMesh::Manifold& m, bool smooth):

		SimpleShaderRenderer(m, smooth, vss, fss) {}

		SimpleShaderRenderer(m, smooth, vss, fss) {}

	};

	};

/** The toon renderer simply quantizes the shading to give a toonish appearance

/** The toon renderer simply quantizes the shading to give a toonish appearance

	with a fat black silhouette. */

	with a fat black silhouette. */

class ToonRenderer: public SimpleShaderRenderer

class ToonRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		ToonRenderer(const HMesh::Manifold& m, bool smooth):

		ToonRenderer(const HMesh::Manifold& m, bool smooth):

		SimpleShaderRenderer(m, smooth, vss, fss) {}

		SimpleShaderRenderer(m, smooth, vss, fss) {}

	};

	};

/** Render like glazed ceramics. Looks cool. I will add more to this. */

/** Render like glazed ceramics. Looks cool. I will add more to this. */

class GlazedRenderer: public SimpleShaderRenderer

class GlazedRenderer: public SimpleShaderRenderer

	{

	{

		float bsphere_rad;

		float bsphere_rad;

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		GlazedRenderer(const HMesh::Manifold& m, bool smooth, float _bsphere_rad=1.0):

		GlazedRenderer(const HMesh::Manifold& m, bool smooth, float _bsphere_rad=1.0):

		SimpleShaderRenderer(m, smooth, vss, fss), bsphere_rad(_bsphere_rad) {}

		SimpleShaderRenderer(m, smooth, vss, fss), bsphere_rad(_bsphere_rad) {}

		void draw();

		void draw();

	};

	};

/** Render a scalar field. Positive scalars are mapped to blue and negative to red.

/** Render a scalar field. Positive scalars are mapped to blue and negative to red.

	This class also has controls for gamma correction which is highly useful if the 

	This class also has controls for gamma correction which is highly useful if the 

	scalars are mostly small or large and simply scaling to the 0-1 range does not 

	scalars are mostly small or large and simply scaling to the 0-1 range does not 

	produce a good result. */

	produce a good result. */

class ScalarFieldRenderer: public SimpleShaderRenderer

class ScalarFieldRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		ScalarFieldRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<double>& field, double max_val, float gamma = 2.2);

		ScalarFieldRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<double>& field, double max_val, float gamma = 2.2);

	};

	};

    /** Render a scalar field. Positive scalars are mapped to blue and negative to red.

    /** Render a scalar field. Positive scalars are mapped to blue and negative to red.

     This class also has controls for gamma correction which is highly useful if the 

     This class also has controls for gamma correction which is highly useful if the 

     scalars are mostly small or large and simply scaling to the 0-1 range does not 

     scalars are mostly small or large and simply scaling to the 0-1 range does not 

     produce a good result. */

     produce a good result. */

    class PeriodicScalarFieldRenderer: public SimpleShaderRenderer

    class PeriodicScalarFieldRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		PeriodicScalarFieldRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<double>& field, float gamma = 2.2);

		PeriodicScalarFieldRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<double>& field, float gamma = 2.2);

	};

	};

/** Ambient occlusion renderer. Very similar to ScalarFieldRender. Simply assumes that the input values are

/** Ambient occlusion renderer. Very similar to ScalarFieldRender. Simply assumes that the input values are

	mean curvatures which in some sense indicate how concave the surface is.*/

	mean curvatures which in some sense indicate how concave the surface is.*/

class AmbientOcclusionRenderer: public SimpleShaderRenderer

class AmbientOcclusionRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		AmbientOcclusionRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<double>& field, double max_val);

		AmbientOcclusionRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<double>& field, double max_val);

	};

	};

/** Line fields are rendered by convolving a noise function in the direction of the line.

/** Line fields are rendered by convolving a noise function in the direction of the line.

	This is useful, for instance, for curvature rendering. */

	This is useful, for instance, for curvature rendering. */

class LineFieldRenderer: public SimpleShaderRenderer

class LineFieldRenderer: public SimpleShaderRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string fss;

		const static std::string fss;

		float r;

		float r;

	public:

	public:

		LineFieldRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<CGLA::Vec3d>& lines, float _r);

		LineFieldRenderer(const HMesh::Manifold& m, bool smooth, HMesh::VertexAttributeVector<CGLA::Vec3d>& lines, float _r);

		void draw();

		void draw();

	};

	};

/** Class for wireframe rendering. Enable it will case all triangles to be drawn to be drawn as

/** Class for wireframe rendering. Enable it will case all triangles to be drawn to be drawn as

 wireframe. Only triangles are supported, but it is fast. */

 wireframe. Only triangles are supported, but it is fast. */

class DualVertexRenderer: public ManifoldRenderer

class DualVertexRenderer: public ManifoldRenderer

	{

	{

		const static std::string vss;

		const static std::string vss;

		const static std::string gss;

		const static std::string gss;

		const static std::string fss;

		const static std::string fss;

	public:

	public:

		/// The constructor creates the wireframe shader program. It is static so the program is shared.

		/// The constructor creates the wireframe shader program. It is static so the program is shared.

		DualVertexRenderer(const HMesh::Manifold& m, HMesh::VertexAttributeVector<CGLA::Vec4d>& field);

		DualVertexRenderer(const HMesh::Manifold& m, HMesh::VertexAttributeVector<CGLA::Vec4d>& field);

	};

	};

}

}

#endif

#endif

Generated by GNU Enscript 1.6.6.

Generated by GNU Enscript 1.6.6.