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/*
* matrixops.h
*
* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#ifndef MATRIXOPS_H
#define MATRIXOPS_H
#ifdef __cplusplus
extern "C" {
#endif
/* ------------------------------------------------------------------------- */
/* need rewriting: */
/**
* copy the left upp3 3 by 3 of m2 to m1
*/
void MTC_Mat3CpyMat4(float m1[][3], float m2[][4]);
/* ------------------------------------------------------------------------- */
/* operations based on 4 by 4 matrices */
/**
* Copy m1 to m2
*/
void MTC_Mat4CpyMat4(float m1[][4], float m2[][4]);
/**
* Multiply all matrices after the first, leave the result in the
* first argument
*/
void MTC_Mat4MulSerie(float answ[][4],
float m1[][4], float m2[][4], float m3[][4],
float m4[][4], float m5[][4], float m6[][4],
float m7[][4], float m8[][4]);
/**
* m1 = m2 matprod m3
*/
void MTC_Mat4MulMat4(float m1[][4], float m2[][4], float m3[][4]);
/**
* Do vec^t prod mat, result in vec. Ignore vec[3] (vec is a
* float[3])
*/
void MTC_Mat4MulVecfl(float mat[][4], float *vec);
/**
* Invert mat, result in inverse. Always returns 1
*/
int MTC_Mat4Invert(float inverse[][4], float mat[][4]);
/**
* Make the set of mat orthonormal (mat should already be orthogonal)?
* (doesn't appear to normalise properly?)
*/
void MTC_Mat4Ortho(float mat[][4]);
/**
* vec = mat prod vec, result in vec, ignore fourth component entirely
* (4th component is _not_ accessed!!! vec is 3d)
*/
void MTC_Mat4Mul3Vecfl(float mat[][4], float *vec);
/**
* vec = mat prod vec, result in vec
*/
void MTC_Mat4MulVec4fl(float mat[][4], float *vec);
/**
* Set <m> to the 4-D unity matrix
*/
void MTC_Mat4One(float m[][4]);
/**
* Swap matrices m1 and m2
*/
void MTC_Mat4SwapMat4(float m1[][4], float m2[][4]);
/**
* Copy m2 to the top-left 3x3 of m1, don't touch the remaining elements.
*/
void MTC_Mat4CpyMat3nc(float m1[][4], float m2[][3]);
/**
* m1 = m2 * m3, but only the top-left 3x3
*/
void MTC_Mat4MulMat33(float m1[][3], float m2[][4], float m3[][3]);
/* ------------------------------------------------------------------------- */
/* Operations based on 3 by 3 matrices */
/**
* Do vec^t prod mat, result in vec.(vex is 3d)
*/
void MTC_Mat3MulVecfl(float mat[][3], float *vec);
/**
* Copy m1 to m2
*/
void MTC_Mat3CpyMat3(float m1[][3], float m2[][3]);
/**
* m1 = m2 prod m3
*/
void MTC_Mat3MulMat3(float m1[][3], float m3[][3], float m2[][3]);
/**
* vec = vec prod mat
*/
void MTC_Mat3MulVecd(float mat[][3], double *vec);
/**
* Guess: invert matrix
* result goes to m1
*/
void MTC_Mat3Inv(float m1[][3], float m2[][3]);
/**
* Sort of a determinant matrix? Doesn't seem very adjoint to me...
* result goes to m1
*/
void MTC_Mat3Adj(float m1[][3], float m[][3]);
/**
* Set <m> to the 3D unity matrix
*/
void MTC_Mat3One(float m[][3]);
/* ------------------------------------------------------------------------- */
#ifdef __cplusplus
}
#endif
#endif /* MATRIXOPS_H */
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