//
// Copyright (c) 2009 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty.  In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would be
//    appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//    misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//

#ifndef DEBUGDRAW_H
#define DEBUGDRAW_H

enum duDebugDrawPrimitives
{
	DU_DRAW_POINTS,
	DU_DRAW_LINES,
	DU_DRAW_TRIS,
	DU_DRAW_QUADS,	
};

// Abstrace debug draw interface.
struct duDebugDraw
{
	// Begin drawing primitives.
	// Params:
	//  prim - (in) primitive type to draw, one of rcDebugDrawPrimitives.
	//  nverts - (in) number of vertices to be submitted.
	//  size - (in) size of a primitive, applies to point size and line width only.
	virtual void begin(duDebugDrawPrimitives prim, float size = 1.0f) = 0;

	// Submit a vertex
	// Params:
	//  pos - (in) position of the verts.
	//  color - (in) color of the verts.
	virtual void vertex(const float* pos, unsigned int color) = 0;

	// Submit a vertex
	// Params:
	//  x,y,z - (in) position of the verts.
	//  color - (in) color of the verts.
	virtual void vertex(const float x, const float y, const float z, unsigned int color) = 0;

	// End drawing primitives.
	virtual void end() = 0;
};

inline unsigned int duRGBA(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
{
	return (r) | (g << 8) | (b << 16) | (a << 24);
}

inline unsigned int duRGBAf(float fr, float fg, float fb, float fa)
{
	unsigned char r = (unsigned char)(fr*255.0f);
	unsigned char g = (unsigned char)(fg*255.0f);
	unsigned char b = (unsigned char)(fb*255.0f);
	unsigned char a = (unsigned char)(fa*255.0f);
	return duRGBA(r,g,b,a);
}

unsigned int duIntToCol(int i, int a);
void duIntToCol(int i, float* col);

#endif // DEBUGDRAW_H