HeatmapShapeShader.h

#pragma once

#include "Shader.h"
#include "IdTypes.h"
#include "Graphics.h"
#include "VectorMath.h"
#include "Rendering.h"
#include <string>

namespace Eegeo
{
    namespace Shapes
    {
        namespace Heatmaps
        {
            class HeatmapShapeShader : public Rendering::Shader
            {
            public:
                static HeatmapShapeShader* Create(const Rendering::TShaderId shaderId);

                void Use(Rendering::GLState& glState) const;

                void SetMVP(const m44& mvp) const;

                void SetOpacity(float opacity) const;

                void SetGradientSaturation(float colorSaturation) const;

                void SetGradientBrightness(float colorIntensity) const;

                void SetIntensityBias(float intensityBias) const;

                void SetIntensityScale(float intensityScale) const;

                void SetIntensityUnpack(const v2& unpack) const;

                void SetDensityBlend(float densityBlend) const;

                GLuint GetIntensityMinRadiusSamplerId() const { return 0; }

                GLuint GetIntensityMaxRadiusSamplerId() const { return 1; }

                GLuint GetGradientSamplerId() const { return 2; }

            protected:
                HeatmapShapeShader(
                    const Rendering::TShaderId shaderId,
                    const std::string& vertexShaderCode,
                    const std::string& fragmentShaderCode
                );

            private:
                GLuint m_mvpUniformLocation;
                GLuint m_intensityMinRadiusTextureSamplerUniformLocation;
                GLuint m_intensityMaxRadiusTextureSamplerUniformLocation;
                GLuint m_gradientTextureSamplerUniformLocation;
                GLuint m_densityBlendUniformLocation;
                GLuint m_intensityBiasUniformLocation;
                GLuint m_intensityScaleUniformLocation;
                GLuint m_intensityUnpackUniformLocation;
                GLuint m_opacityUniformLocation;
                GLuint m_gradientSaturationUniformLocation;
                GLuint m_gradientBrightnessUniformLocation;
            };
        }
    }
}