primitive_renderer.h

#ifndef _PRIMITIVE_RENDERER_H
#define _PRIMITIVE_RENDERER_H
 
#include <gef.h>
 
namespace gef
{
    class Platform;
    class Renderer3D;
    class Vector4;
    class Colour;
    class VertexBuffer;
    class IndexBuffer;
}
 
 
 
namespace GefExtensions
{
    class VertexColourUnlitShader;
    class PrimitiveRenderer
    {
    public:
        PrimitiveRenderer(gef::Platform & platform, UInt32 max_num_lines = kDefaultMaxNumLines, UInt32 max_num_triangles = kDefaultMaxNumTriangles);
        ~PrimitiveRenderer();
 
        void Render(gef::Renderer3D & renderer_3d);
 
        void Reset();
 
        void AddLine(gef::Vector4 const & start, gef::Vector4 const & end, gef::Colour const & colour);
        void AddTriangle(gef::Vector4 const & v0, gef::Vector4 const & v1, gef::Vector4 const & v2, gef::Colour const & colour);
 
        void DrawLines(gef::Renderer3D & renderer3D);
        void DrawTriangles(gef::Renderer3D & renderer3D);
 
        static int constexpr kDefaultMaxNumLines = 512;
        static int constexpr kDefaultMaxNumTriangles = 512;
    private:
        VertexColourUnlitShader * shader_;
        UInt32 num_lines_;
        UInt32 num_triangles_;
        gef::VertexBuffer * lines_vertex_buffer_;
        gef::VertexBuffer * triangles_vertex_buffer_;
        gef::IndexBuffer * lines_index_buffer_;
        gef::IndexBuffer * triangles_index_buffer_;
        UInt32 max_num_lines_;
        UInt32 max_num_triangles_;
    };
}
#endif // _PRIMITIVE_RENDERER_H