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/*
* Copyright (c) 2006-2013 Erin Catto http://www.box2d.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
#include <Box2D/Box2D.h>
struct b2AABB;
struct GLRenderPoints;
struct GLRenderLines;
struct GLRenderTriangles;
//
struct Camera
{
Camera()
{
m_center.Set(0.0f, 20.0f);
m_extent = 25.0f;
m_zoom = 1.0f;
m_width = 1280;
m_height = 800;
}
b2Vec2 ConvertScreenToWorld(const b2Vec2& screenPoint);
b2Vec2 ConvertWorldToScreen(const b2Vec2& worldPoint);
void BuildProjectionMatrix(float32* m, float32 zBias);
b2Vec2 m_center;
float32 m_extent;
float32 m_zoom;
int32 m_width;
int32 m_height;
};
// This class implements debug drawing callbacks that are invoked
// inside b2World::Step.
class DebugDraw : public b2Draw
{
public:
DebugDraw();
~DebugDraw();
void Create();
void Destroy();
void DrawPolygon(const b2Vec2* vertices, int32 vertexCount, const b2Color& color);
void DrawSolidPolygon(const b2Vec2* vertices, int32 vertexCount, const b2Color& color);
void DrawCircle(const b2Vec2& center, float32 radius, const b2Color& color);
void DrawSolidCircle(const b2Vec2& center, float32 radius, const b2Vec2& axis, const b2Color& color);
void DrawSegment(const b2Vec2& p1, const b2Vec2& p2, const b2Color& color);
void DrawTransform(const b2Transform& xf);
void DrawPoint(const b2Vec2& p, float32 size, const b2Color& color);
void DrawString(int x, int y, const char* string, ...);
void DrawString(const b2Vec2& p, const char* string, ...);
void DrawAABB(b2AABB* aabb, const b2Color& color);
void Flush();
private:
GLRenderPoints* m_points;
GLRenderLines* m_lines;
GLRenderTriangles* m_triangles;
};
extern DebugDraw g_debugDraw;
extern Camera g_camera;
#endif
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