IMeshManipulator.h

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#ifndef __I_MESH_MANIPULATOR_H_INCLUDED__
#define __I_MESH_MANIPULATOR_H_INCLUDED__

#include "IReferenceCounted.h"
#include "vector3d.h"
#include "aabbox3d.h"
#include "matrix4.h"
#include "IAnimatedMesh.h"
#include "IMeshBuffer.h"
#include "SVertexManipulator.h"

namespace irr
{
namespace scene
{

    struct SMesh;


    class IMeshManipulator : public virtual IReferenceCounted
    {
    public:


        virtual void flipSurfaces(IMesh* mesh) const = 0;


        void setVertexColorAlpha(IMesh* mesh, s32 alpha) const
        {
            apply(scene::SVertexColorSetAlphaManipulator(alpha), mesh);
        }


        void setVertexColorAlpha(IMeshBuffer* buffer, s32 alpha) const
        {
            apply(scene::SVertexColorSetAlphaManipulator(alpha), buffer);
        }


        void setVertexColors(IMesh* mesh, video::SColor color) const
        {
            apply(scene::SVertexColorSetManipulator(color), mesh);
        }


        void setVertexColors(IMeshBuffer* buffer, video::SColor color) const
        {
            apply(scene::SVertexColorSetManipulator(color), buffer);
        }


        virtual void recalculateNormals(IMesh* mesh, bool smooth = false,
                bool angleWeighted = false) const=0;


        virtual void recalculateNormals(IMeshBuffer* buffer,
                bool smooth = false, bool angleWeighted = false) const=0;


        virtual void recalculateTangents(IMesh* mesh,
                bool recalculateNormals=false, bool smooth=false,
                bool angleWeighted=false) const=0;


        virtual void recalculateTangents(IMeshBuffer* buffer,
                bool recalculateNormals=false, bool smooth=false,
                bool angleWeighted=false) const=0;


        void scale(IMesh* mesh, const core::vector3df& factor) const
        {
            apply(SVertexPositionScaleManipulator(factor), mesh, true);
        }


        void scale(IMeshBuffer* buffer, const core::vector3df& factor) const
        {
            apply(SVertexPositionScaleManipulator(factor), buffer, true);
        }


        _IRR_DEPRECATED_ void scaleMesh(IMesh* mesh, const core::vector3df& factor) const {return scale(mesh,factor);}


        void scaleTCoords(scene::IMesh* mesh, const core::vector2df& factor, u32 level=1) const
        {
            apply(SVertexTCoordsScaleManipulator(factor, level), mesh);
        }


        void scaleTCoords(scene::IMeshBuffer* buffer, const core::vector2df& factor, u32 level=1) const
        {
            apply(SVertexTCoordsScaleManipulator(factor, level), buffer);
        }


        void transform(IMesh* mesh, const core::matrix4& m) const
        {
            apply(SVertexPositionTransformManipulator(m), mesh, true);
        }


        void transform(IMeshBuffer* buffer, const core::matrix4& m) const
        {
            apply(SVertexPositionTransformManipulator(m), buffer, true);
        }


        _IRR_DEPRECATED_ virtual void transformMesh(IMesh* mesh, const core::matrix4& m) const {return transform(mesh,m);}


        virtual void makePlanarTextureMapping(IMesh* mesh, f32 resolution=0.001f) const=0;


        virtual void makePlanarTextureMapping(scene::IMeshBuffer* meshbuffer, f32 resolution=0.001f) const=0;


        virtual void makePlanarTextureMapping(scene::IMesh* mesh,
                f32 resolutionS, f32 resolutionT,
                u8 axis, const core::vector3df& offset) const=0;


        virtual void makePlanarTextureMapping(scene::IMeshBuffer* buffer,
                f32 resolutionS, f32 resolutionT,
                u8 axis, const core::vector3df& offset) const=0;


        virtual SMesh* createMeshCopy(IMesh* mesh) const = 0;


        virtual IMesh* createMeshWithTangents(IMesh* mesh,
                bool recalculateNormals=false, bool smooth=false,
                bool angleWeighted=false, bool recalculateTangents=true) const=0;


        virtual IMesh* createMeshWith2TCoords(IMesh* mesh) const = 0;


        virtual IMesh* createMeshWith1TCoords(IMesh* mesh) const = 0;


        virtual IMesh* createMeshUniquePrimitives(IMesh* mesh) const = 0;


        virtual IMesh* createMeshWelded(IMesh* mesh, f32 tolerance=core::ROUNDING_ERROR_f32) const = 0;


        virtual s32 getPolyCount(IMesh* mesh) const = 0;


        virtual s32 getPolyCount(IAnimatedMesh* mesh) const = 0;


        virtual IAnimatedMesh * createAnimatedMesh(IMesh* mesh,
            scene::E_ANIMATED_MESH_TYPE type = scene::EAMT_UNKNOWN) const = 0;


        virtual IMesh* createForsythOptimizedMesh(const IMesh *mesh) const = 0;


        template <typename Functor>
        bool apply(const Functor& func, IMeshBuffer* buffer, bool boundingBoxUpdate=false) const
        {
            return apply_(func, buffer, boundingBoxUpdate, func);
        }



        template <typename Functor>
        bool apply(const Functor& func, IMesh* mesh, bool boundingBoxUpdate=false) const
        {
            if (!mesh)
                return true;
            bool result = true;
            core::aabbox3df bufferbox;
            for (u32 i=0; i<mesh->getMeshBufferCount(); ++i)
            {
                result &= apply(func, mesh->getMeshBuffer(i), boundingBoxUpdate);
                if (boundingBoxUpdate)
                {
                    if (0==i)
                        bufferbox.reset(mesh->getMeshBuffer(i)->getBoundingBox());
                    else
                        bufferbox.addInternalBox(mesh->getMeshBuffer(i)->getBoundingBox());
                }
            }
            if (boundingBoxUpdate)
                mesh->setBoundingBox(bufferbox);
            return result;
        }

protected:

        template <typename Functor>
        bool apply_(const Functor& func, IMeshBuffer* buffer, bool boundingBoxUpdate, const IVertexManipulator& typeTest) const
        {
            if (!buffer)
                return true;

            core::aabbox3df bufferbox;
            for (u32 i=0; i<buffer->getVertexCount(); ++i)
            {
                switch (buffer->getVertexType())
                {
                case video::EVT_STANDARD:
                    {
                        video::S3DVertex* verts = (video::S3DVertex*)buffer->getVertices();
                        func(verts[i]);
                    }
                    break;
                case video::EVT_2TCOORDS:
                    {
                        video::S3DVertex2TCoords* verts = (video::S3DVertex2TCoords*)buffer->getVertices();
                        func(verts[i]);
                    }
                    break;
                case video::EVT_TANGENTS:
                    {
                        video::S3DVertexTangents* verts = (video::S3DVertexTangents*)buffer->getVertices();
                        func(verts[i]);
                    }
                    break;
                }
                if (boundingBoxUpdate)
                {
                    if (0==i)
                        bufferbox.reset(buffer->getPosition(0));
                    else
                        bufferbox.addInternalPoint(buffer->getPosition(i));
                }
            }
            if (boundingBoxUpdate)
                buffer->setBoundingBox(bufferbox);
            return true;
        }
};

} // end namespace scene
} // end namespace irr


#endif