mat3.h

#ifndef HEADER_8E9D0ABA3C76B989
#define HEADER_8E9D0ABA3C76B989

/*
Copyright (c) 2008, Luke Benstead.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


#ifndef MAT3_H_INCLUDED
#define MAT3_H_INCLUDED

#include "utility.h"

struct kmVec3;
struct kmQuaternion;
struct kmMat4;

typedef struct kmMat3{
	kmScalar mat[9];
} kmMat3;

#ifdef __cplusplus
extern "C" {
#endif

kmMat3* const kmMat3Fill(kmMat3* pOut, const kmScalar* pMat);
kmMat3* const kmMat3Adjugate(kmMat3* pOut, const kmMat3* pIn);
kmMat3* const kmMat3Identity(kmMat3* pOut);
kmMat3* const kmMat3Inverse(kmMat3* pOut, const kmMat3* pM);
const int  kmMat3IsIdentity(const kmMat3* pIn);
kmMat3* const kmMat3Transpose(kmMat3* pOut, const kmMat3* pIn);
const kmScalar kmMat3Determinant(const kmMat3* pIn);
kmMat3* const kmMat3Multiply(kmMat3* pOut, const kmMat3* pM1, const kmMat3* pM2);
kmMat3* const kmMat3ScalarMultiply(kmMat3* pOut, const kmMat3* pM, const kmScalar pFactor);

kmMat3* const kmMat3Assign(kmMat3* pOut, const kmMat3* pIn);
kmMat3* const kmMat3AssignMat4(kmMat3* pOut, const struct kmMat4* pIn);
const int  kmMat3AreEqual(const kmMat3* pM1, const kmMat3* pM2);

struct kmVec3* const kmMat3GetUpVec3(struct kmVec3* pOut, const kmMat3* pIn);
struct kmVec3* const kmMat3GetRightVec3(struct kmVec3* pOut, const kmMat3* pIn);
struct kmVec3* const kmMat3GetForwardVec3(struct kmVec3* pOut, const kmMat3* pIn);

kmMat3* const kmMat3RotationX(kmMat3* pOut, const kmScalar radians);
kmMat3* const kmMat3RotationY(kmMat3* pOut, const kmScalar radians);
kmMat3* const kmMat3RotationZ(kmMat3* pOut, const kmScalar radians);

kmMat3* const kmMat3Rotation(kmMat3* pOut, const kmScalar radians);
kmMat3* const kmMat3Scaling(kmMat3* pOut, const kmScalar x, const kmScalar y);
kmMat3* const kmMat3Translation(kmMat3* pOut, const kmScalar x, const kmScalar y);

kmMat3* const kmMat3RotationQuaternion(kmMat3* pOut, const struct kmQuaternion* pIn);

kmMat3* const kmMat3RotationAxisAngle(kmMat3* pOut, const struct kmVec3* axis, kmScalar radians);
struct kmVec3* const kmMat3RotationToAxisAngle(struct kmVec3* pAxis, kmScalar* radians, const kmMat3* pIn);

#ifdef __cplusplus
}
#endif
#endif // MAT3_H_INCLUDED


#endif // header guard