2 * ICE / OPCODE - Optimized Collision Detection
3 * http://www.codercorner.com/Opcode.htm
5 * Copyright (c) 2001-2008 Pierre Terdiman, pierre@codercorner.com
7 This software is provided 'as-is', without any express or implied warranty.
8 In no event will the authors be held liable for any damages arising from the use of this software.
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it freely,
11 subject to the following restrictions:
13 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.
14 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
15 3. This notice may not be removed or altered from any source distribution.
17 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
19 * Contains code for 3x3 matrices.
20 * \file IceMatrix3x3.cpp
21 * \author Pierre Terdiman
22 * \date April, 4, 2000
24 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
26 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
29 * DirectX-compliant, ie row-column order, ie m[Row][Col].
31 * m11 m12 m13 first row.
32 * m21 m22 m23 second row.
33 * m31 m32 m33 third row.
34 * Stored in memory as m11 m12 m13 m21...
36 * Multiplication rules:
40 * x' = x*m11 + y*m21 + z*m31
41 * y' = x*m12 + y*m22 + z*m32
42 * z' = x*m13 + y*m23 + z*m33
45 * \author Pierre Terdiman
48 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
50 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
54 using namespace Opcode;
57 Matrix3x3::operator Matrix4x4() const
60 m[0][0], m[0][1], m[0][2], 0.0f,
61 m[1][0], m[1][1], m[1][2], 0.0f,
62 m[2][0], m[2][1], m[2][2], 0.0f,
63 0.0f, 0.0f, 0.0f, 1.0f);