/*
 * Copyright 1993-2006 NVIDIA Corporation.  All rights reserved.
 *
 * NOTICE TO USER:   
 *
 * This source code is subject to NVIDIA ownership rights under U.S. and 
 * international Copyright laws.  
 *
 * NVIDIA MAKES NO REPRESENTATION ABOUT THE SUITABILITY OF THIS SOURCE 
 * CODE FOR ANY PURPOSE.  IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR 
 * IMPLIED WARRANTY OF ANY KIND.  NVIDIA DISCLAIMS ALL WARRANTIES WITH 
 * REGARD TO THIS SOURCE CODE, INCLUDING ALL IMPLIED WARRANTIES OF 
 * MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE.   
 * IN NO EVENT SHALL NVIDIA BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, 
 * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS 
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE 
 * OR PERFORMANCE OF THIS SOURCE CODE.  
 *
 * U.S. Government End Users.  This source code is a "commercial item" as 
 * that term is defined at 48 C.F.R. 2.101 (OCT 1995), consisting  of 
 * "commercial computer software" and "commercial computer software 
 * documentation" as such terms are used in 48 C.F.R. 12.212 (SEPT 1995) 
 * and is provided to the U.S. Government only as a commercial end item.  
 * Consistent with 48 C.F.R.12.212 and 48 C.F.R. 227.7202-1 through 
 * 227.7202-4 (JUNE 1995), all U.S. Government End Users acquire the 
 * source code with only those rights set forth herein.
 */

#ifndef __RENDER_PARTICLES__
#define __RENDER_PARTICLES__

class ParticleRenderer
{
public:
    ParticleRenderer();
    ~ParticleRenderer();

    void setPositions(float *pos, int numParticles);
    void setVertexBuffer(unsigned int vbo, int numParticles);
    void setColorBuffer(unsigned int vbo) { m_colorVBO = vbo; }

    enum DisplayMode
    {
        PARTICLE_POINTS,
        PARTICLE_SPHERES,
        PARTICLE_NUM_MODES
    };

    void display(DisplayMode mode = PARTICLE_POINTS);
    void displayGrid();

    void setPointSize(float size)  { m_pointSize = size; }
    void setParticleRadius(float r) { m_particleRadius = r; }
    void setFOV(float fov) { m_fov = fov; }
    void setWindowSize(int w, int h) { m_window_w = w; m_window_h = h; }

	void showProfileInfo(float& xOffset,float& yStart, float yIncr);
	void	displayProfileString(int xOffset,int yStart,char* message);
	class CProfileIterator* m_profileIterator;

protected: // methods
    void _initGL();
    void _drawPoints();
    GLuint _compileProgram(const char *vsource, const char *fsource);

protected: // data
    float *m_pos;
    int m_numParticles;

    float m_pointSize;
    float m_particleRadius;
    float m_fov;
    int m_window_w, m_window_h;

    GLuint m_program;

    GLuint m_vbo;
    GLuint m_colorVBO;
};

#endif //__ RENDER_PARTICLES__