DrawableMesh.h

// Copyright (c) 2016 The Foundry Visionmongers Ltd. All Rights Reserved.

#ifndef DRAWABLEMESH_H_
#define DRAWABLEMESH_H_

#if defined(_WIN32)
#include <FnPlatform/Windows.h>
#endif

#include "GL/glew.h"
#include "FnViewer/utils/FnGLShaderProgram.h"
#include <FnAttribute/FnAttribute.h>
#include <vector>

class DrawableMesh
{
public:
    enum BUFFERS {
        VERTEX_BUFFER,
        COLOR_BUFFER,
        INDEX_BUFFER,
        TEXCOORD_BUFFER,
        NORMAL_BUFFER,

        NUM_BUFFERS
    };

    DrawableMesh();
    virtual ~DrawableMesh();

    void clearGLResources();

    void deleteShader();

    void setDrawAttribute(const std::string& name, FnAttribute::Attribute attr);

    void draw();

    void pickerDraw(Foundry::Katana::ViewerUtils::GLShaderProgram& shaderProgram);

    void setupGeometry(const FnAttribute::GroupAttribute& attributes);

    void setupMaterials(const FnAttribute::GroupAttribute& attributes);

    bool isValid() const;

    Foundry::Katana::ViewerUtils::GLShaderProgram* getCustomShader() const { return m_customShader; }

private:
    FnAttribute::FloatAttribute m_pointsAttr;
    GLuint m_vao;
    GLuint m_vbo[NUM_BUFFERS];
    int m_numDrawElements;
    Foundry::Katana::ViewerUtils::GLShaderProgram* m_customShader;
    FnAttribute::DoubleAttribute m_viewMatrixAttr;
    FnAttribute::DoubleAttribute m_projectionMatrixAttr;
    FnAttribute::DoubleAttribute m_worldMatrixAttr;
    FnAttribute::FloatAttribute m_colorAttr;
};


#endif /* DRAWABLEMESH_H_ */