Initial Mercurial commit.

src/common/Matrix.h

@@ -0,0 +1,96 @@
+/**
+* Copyright (c) 2006-2009 LOVE Development Team
+* 
+* 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 LOVE_MATRIX_H
+#define LOVE_MATRIX_H
+
+// STD
+#include <cmath>
+
+// LOVE
+#include "math.h"
+
+namespace love
+{
+
+	// Forward declarations.
+	class Vector;
+
+	class Matrix
+	{
+		friend class Vector;
+
+	public:
+
+		// | e0 e4 e8  e12 |
+		// | e1 e5 e9  e13 |
+		// | e2 e6 e10 e14 |
+		// | e3 e7 e11 e15 |
+		float e[16];
+
+		/**
+		* Creates a new identity matrix.
+		**/
+		Matrix();
+
+		/**
+		* Destructor.
+		**/
+		~Matrix();
+
+		Matrix operator * (const Matrix & m) const;
+		void operator *= (const Matrix & m) const;
+
+		const float * getElements() const;
+
+		void setIdentity();
+		void setTranslation(float x, float y);
+		void setRotation(float rad);
+		void setScale(float sx, float sy);
+
+		/**
+		* Creates a transformation with a certain position, orientation, scale
+		* and offset.
+		* 
+		* @param x The translation along the x-axis.
+		* @param y The translation along the y-axis.
+		* @param angle The rotation (rad) around the center with offset (ox,oy).
+		* @param sx Scale along x-axis.
+		* @param sy Scale along y-axis.
+		* @param ox The offset for rotation along the x-axis.
+		* @param oy The offset for rotation along the y-axis.
+		**/
+		void setTransformation(float x, float y, float angle, float sx, float sy, float ox, float oy);
+
+		void translate(float x, float y);
+		void rotate(float rad);
+		void scale(float sx, float sy);
+		
+		/**
+		* Transforms an array of vertices.
+		* @stride Stride in bytes.
+		**/
+		void transform(vertex * dst, const vertex * src, int size);
+
+	};
+
+} //love
+
+#endif// LOVE_MATRIX_H