98 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			C
		
	
	
	
		
		
			
		
	
	
			98 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			C
		
	
	
	
|  | /*
 | ||
|  | * Copyright (c) 2011 Erin Catto http://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 B2_DRAW_H
 | ||
|  | #define B2_DRAW_H
 | ||
|  | 
 | ||
|  | #include "Box2D/Common/b2Math.h"
 | ||
|  | 
 | ||
|  | /// Color for debug drawing. Each value has the range [0,1].
 | ||
|  | struct b2Color | ||
|  | { | ||
|  | 	b2Color() {} | ||
|  | 	b2Color(float32 rIn, float32 gIn, float32 bIn, float32 aIn = 1.0f) | ||
|  | 	{ | ||
|  | 		r = rIn; g = gIn; b = bIn; a = aIn; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	void Set(float32 rIn, float32 gIn, float32 bIn, float32 aIn = 1.0f) | ||
|  | 	{ | ||
|  | 		r = rIn; g = gIn; b = bIn; a = aIn; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	float32 r, g, b, a; | ||
|  | }; | ||
|  | 
 | ||
|  | /// Implement and register this class with a b2World to provide debug drawing of physics
 | ||
|  | /// entities in your game.
 | ||
|  | class b2Draw | ||
|  | { | ||
|  | public: | ||
|  | 	b2Draw(); | ||
|  | 
 | ||
|  | 	virtual ~b2Draw() {} | ||
|  | 
 | ||
|  | 	enum | ||
|  | 	{ | ||
|  | 		e_shapeBit				= 0x0001,	///< draw shapes
 | ||
|  | 		e_jointBit				= 0x0002,	///< draw joint connections
 | ||
|  | 		e_aabbBit				= 0x0004,	///< draw axis aligned bounding boxes
 | ||
|  | 		e_pairBit				= 0x0008,	///< draw broad-phase pairs
 | ||
|  | 		e_centerOfMassBit		= 0x0010	///< draw center of mass frame
 | ||
|  | 	}; | ||
|  | 
 | ||
|  | 	/// Set the drawing flags.
 | ||
|  | 	void SetFlags(uint32 flags); | ||
|  | 
 | ||
|  | 	/// Get the drawing flags.
 | ||
|  | 	uint32 GetFlags() const; | ||
|  | 	 | ||
|  | 	/// Append flags to the current flags.
 | ||
|  | 	void AppendFlags(uint32 flags); | ||
|  | 
 | ||
|  | 	/// Clear flags from the current flags.
 | ||
|  | 	void ClearFlags(uint32 flags); | ||
|  | 
 | ||
|  | 	/// Draw a closed polygon provided in CCW order.
 | ||
|  | 	virtual void DrawPolygon(const b2Vec2* vertices, int32 vertexCount, const b2Color& color) = 0; | ||
|  | 
 | ||
|  | 	/// Draw a solid closed polygon provided in CCW order.
 | ||
|  | 	virtual void DrawSolidPolygon(const b2Vec2* vertices, int32 vertexCount, const b2Color& color) = 0; | ||
|  | 
 | ||
|  | 	/// Draw a circle.
 | ||
|  | 	virtual void DrawCircle(const b2Vec2& center, float32 radius, const b2Color& color) = 0; | ||
|  | 	 | ||
|  | 	/// Draw a solid circle.
 | ||
|  | 	virtual void DrawSolidCircle(const b2Vec2& center, float32 radius, const b2Vec2& axis, const b2Color& color) = 0; | ||
|  | 	 | ||
|  | 	/// Draw a line segment.
 | ||
|  | 	virtual void DrawSegment(const b2Vec2& p1, const b2Vec2& p2, const b2Color& color) = 0; | ||
|  | 
 | ||
|  | 	/// Draw a transform. Choose your own length scale.
 | ||
|  | 	/// @param xf a transform.
 | ||
|  | 	virtual void DrawTransform(const b2Transform& xf) = 0; | ||
|  | 
 | ||
|  | 	/// Draw a point.
 | ||
|  | 	virtual void DrawPoint(const b2Vec2& p, float32 size, const b2Color& color) = 0; | ||
|  | 
 | ||
|  | protected: | ||
|  | 	uint32 m_drawFlags; | ||
|  | }; | ||
|  | 
 | ||
|  | #endif
 |