SVertexManipulator.h

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// Copyright (C) 2009-2011 Christian Stehno
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#ifndef __S_VERTEX_MANIPULATOR_H_INCLUDED__
#define __S_VERTEX_MANIPULATOR_H_INCLUDED__

#include "S3DVertex.h"
#include "SColor.h"

namespace irr
{
namespace scene
{

        class IMesh;
        class IMeshBuffer;
        struct SMesh;


        struct IVertexManipulator
        {
        };
        class SVertexColorSetManipulator : public IVertexManipulator
        {
        public:
                SVertexColorSetManipulator(video::SColor color) : Color(color) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color=Color;
                }
        private:
                video::SColor Color;
        };
        class SVertexColorSetAlphaManipulator : public IVertexManipulator
        {
        public:
                SVertexColorSetAlphaManipulator(u32 alpha) : Alpha(alpha) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setAlpha(Alpha);
                }
        private:
                u32 Alpha;
        };
        class SVertexColorInvertManipulator : public IVertexManipulator
        {
        public:
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setRed(255-vertex.Color.getRed());
                        vertex.Color.setGreen(255-vertex.Color.getGreen());
                        vertex.Color.setBlue(255-vertex.Color.getBlue());
                }
        };

        class SVertexColorThresholdManipulator : public IVertexManipulator
        {
        public:
                SVertexColorThresholdManipulator(u8 threshold, video::SColor low,
                        video::SColor high) : Threshold(threshold), Low(low), High(high) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color = ((u8)vertex.Color.getAverage()>Threshold)?High:Low;
                }
        private:
                u8 Threshold;
                video::SColor Low;
                video::SColor High;
        };

        class SVertexColorBrightnessManipulator : public IVertexManipulator
        {
        public:
                SVertexColorBrightnessManipulator(s32 amount) : Amount(amount) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setRed(core::clamp(vertex.Color.getRed()+Amount, 0u, 255u));
                        vertex.Color.setGreen(core::clamp(vertex.Color.getGreen()+Amount, 0u, 255u));
                        vertex.Color.setBlue(core::clamp(vertex.Color.getBlue()+Amount, 0u, 255u));
                }
        private:
                s32 Amount;
        };

        class SVertexColorContrastManipulator : public IVertexManipulator
        {
        public:
                SVertexColorContrastManipulator(f32 factor) : Factor(factor) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setRed(core::clamp(core::round32((vertex.Color.getRed()-128)*Factor)+128, 0, 255));
                        vertex.Color.setGreen(core::clamp(core::round32((vertex.Color.getGreen()-128)*Factor)+128, 0, 255));
                        vertex.Color.setBlue(core::clamp(core::round32((vertex.Color.getBlue()-128)*Factor)+128, 0, 255));
                }
        private:
                f32 Factor;
        };

        class SVertexColorContrastBrightnessManipulator : public IVertexManipulator
        {
        public:
                SVertexColorContrastBrightnessManipulator(f32 factor, s32 amount) : Factor(factor), Amount(amount+128) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setRed(core::clamp(core::round32((vertex.Color.getRed()-128)*Factor)+Amount, 0, 255));
                        vertex.Color.setGreen(core::clamp(core::round32((vertex.Color.getGreen()-128)*Factor)+Amount, 0, 255));
                        vertex.Color.setBlue(core::clamp(core::round32((vertex.Color.getBlue()-128)*Factor)+Amount, 0, 255));
                }
        private:
                f32 Factor;
                s32 Amount;
        };

        class SVertexColorGammaManipulator : public IVertexManipulator
        {
        public:
                SVertexColorGammaManipulator(f32 gamma) : Gamma(1.f)
                {
                        if (gamma != 0.f)
                                Gamma = 1.f/gamma;
                }
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setRed(core::clamp(core::round32(powf((f32)(vertex.Color.getRed()),Gamma)), 0, 255));
                        vertex.Color.setGreen(core::clamp(core::round32(powf((f32)(vertex.Color.getGreen()),Gamma)), 0, 255));
                        vertex.Color.setBlue(core::clamp(core::round32(powf((f32)(vertex.Color.getBlue()),Gamma)), 0, 255));
                }
        private:
                f32 Gamma;
        };

        class SVertexColorScaleManipulator : public IVertexManipulator
        {
        public:
                SVertexColorScaleManipulator(f32 factor) : Factor(factor) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color.setRed(core::clamp(core::round32(vertex.Color.getRed()*Factor), 0, 255));
                        vertex.Color.setGreen(core::clamp(core::round32(vertex.Color.getGreen()*Factor), 0, 255));
                        vertex.Color.setBlue(core::clamp(core::round32(vertex.Color.getBlue()*Factor), 0, 255));
                }
        private:
                f32 Factor;
        };

        class SVertexColorDesaturateToLightnessManipulator : public IVertexManipulator
        {
        public:
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color=core::round32(vertex.Color.getLightness());
                }
        };

        class SVertexColorDesaturateToAverageManipulator : public IVertexManipulator
        {
        public:
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color=vertex.Color.getAverage();
                }
        };

        class SVertexColorDesaturateToLuminanceManipulator : public IVertexManipulator
        {
        public:
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color=core::round32(vertex.Color.getLuminance());
                }
        };

        class SVertexColorInterpolateLinearManipulator : public IVertexManipulator
        {
        public:
                SVertexColorInterpolateLinearManipulator(video::SColor color, f32 factor) :
                  Color(color), Factor(factor) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color=vertex.Color.getInterpolated(Color, Factor);
                }
        private:
                video::SColor Color;
                f32 Factor;
        };

        class SVertexColorInterpolateQuadraticManipulator : public IVertexManipulator
        {
        public:
                SVertexColorInterpolateQuadraticManipulator(video::SColor color1, video::SColor color2, f32 factor) :
                  Color1(color1), Color2(color2), Factor(factor) {}
                void operator()(video::S3DVertex& vertex) const
                {
                        vertex.Color=vertex.Color.getInterpolated_quadratic(Color1, Color2, Factor);
                }
        private:
                video::SColor Color1;
                video::SColor Color2;
                f32 Factor;
        };

        class SVertexPositionScaleManipulator : public IVertexManipulator
        {
        public:
                SVertexPositionScaleManipulator(const core::vector3df& factor) : Factor(factor) {}
                template <typename VType>
                void operator()(VType& vertex) const
                {
                        vertex.Pos *= Factor;
                }
        private:
                core::vector3df Factor;
        };


        class SVertexPositionScaleAlongNormalsManipulator : public IVertexManipulator
        {
        public:
                SVertexPositionScaleAlongNormalsManipulator(const core::vector3df& factor) : Factor(factor) {}
                template <typename VType>
                void operator()(VType& vertex) const
                {
                        vertex.Pos += vertex.Normal*Factor;
                }
        private:
                core::vector3df Factor;
        };

        class SVertexPositionTransformManipulator : public IVertexManipulator
        {
        public:
                SVertexPositionTransformManipulator(const core::matrix4& m) : Transformation(m) {}
                template <typename VType>
                void operator()(VType& vertex) const
                {
                        Transformation.transformVect(vertex.Pos);
                }
        private:
                core::matrix4 Transformation;
        };

        class SVertexTCoordsScaleManipulator : public IVertexManipulator
        {
        public:
                SVertexTCoordsScaleManipulator(const core::vector2df& factor, u32 uvSet=1) : Factor(factor), UVSet(uvSet) {}
                void operator()(video::S3DVertex2TCoords& vertex) const
                {
                        if (1==UVSet)
                                vertex.TCoords *= Factor;
                        else if (2==UVSet)
                                vertex.TCoords2 *= Factor;
                }
                template <typename VType>
                void operator()(VType& vertex) const
                {
                        if (1==UVSet)
                                vertex.TCoords *= Factor;
                }
        private:
                core::vector2df Factor;
                u32 UVSet;
        };

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


#endif