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118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* Apple // emulator for *ix
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*
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* This software package is subject to the GNU General Public License
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* version 3 or later (your choice) as published by the Free Software
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* Foundation.
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*
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* Copyright 2013-2015 Aaron Culliney
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*
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*/
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// Modified sample code from https://developer.apple.com/library/mac/samplecode/GLEssentials/Introduction/Intro.html
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#ifndef __MATRIX_UTIL_H__
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#define __MATRIX_UTIL_H__
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// Matrix is a column major floating point array
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// All matrices are 4x4 by unless the mtx3x3 prefix is specified in the function name
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// [ 0 4 8 12 ]
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// [ 1 5 9 13 ]
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// [ 2 6 10 14 ]
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// [ 3 7 11 15 ]
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// MTX = LeftHandSideMatrix * RightHandSideMatrix
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void mtxMultiply(float *ret, const float *lhs, const float *rhs);
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// MTX = IdentityMatrix
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void mtxLoadIdentity(float *mtx);
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// MTX = Transpos(SRC)
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void mtxTranspose(float *mtx, const float *src);
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// MTX = src^-1
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void mtxInvert(float *mtx, const float *src);
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// MTX = PerspectiveProjectionMatrix
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void mtxLoadPerspective(float *mtx, float fov, float aspect, float nearZ, float farZ);
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// MTX = OrthographicProjectionMatrix
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void mtxLoadOrthographic(float *mtx, float left, float right, float bottom, float top, float nearZ, float farZ);
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// MTX = ObliqueProjectionMatrix(src, clipPlane)
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void mtxModifyObliqueProjection(float *mtx, const float *src, const float *plane);
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// MTX = TranlationMatrix
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void mtxLoadTranslate(float *mtx, float xTrans, float yTrans, float zTrans);
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// MTX = ScaleMatrix
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void mtxLoadScale(float *mtx, float xScale, float yScale, float zScale);
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// MTX = RotateXYZMatrix
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void mtxLoadRotate(float *mtx, float deg, float xAxis, float , float zAxis);
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// MTX = RotateXMatrix
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void mtxLoadRotateX(float *mtx, float deg);
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// MTX = RotateYMatrix
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void mtxLoadRotateY(float *mtx, float deg);
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// MTX = RotateZMatrix
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void mtxLoadRotateZ(float *mtx, float deg);
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// MTX = MTX * TranslationMatrix - Similar to glTranslate
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void mtxTranslateApply(float *mtx, float xTrans, float yTrans, float zTrans);
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// MTX = MTX * ScaleMatrix - Similar to glScale
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void mtxScaleApply(float *mtx, float xScale, float yScale, float zScale);
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// MTX = MTX * RotateXYZMatrix - Similar to glRotate
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void mtxRotateApply(float *mtx, float deg, float xAxis, float yAxis, float zAxis);
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// MTX = MTX * RotateXMatrix
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void mtxRotateXApply(float *mtx, float deg);
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// MTX = MTX * RotateYMatrix
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void mtxRotateYApply(float *mtx, float deg);
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// MTX = MTX * RotateZMatrix
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void mtxRotateZApply(float *mtx, float deg);
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// MTX = TranslationMatrix * MTX
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void mtxTranslateMatrix(float *mtx, float xTrans, float yTrans, float zTrans);
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// MTX = ScaleMatrix * MTX
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void mtxScaleMatrix(float *mtx, float xScale, float yScale, float zScale);
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// MTX = RotateXYZMatrix * MTX
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void mtxRotateMatrix(float *mtx, float rad, float xAxis, float yAxis, float zAxis);
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// MTX = RotateXMatrix * MTX
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void mtxRotateXMatrix(float *mtx, float rad);
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// MTX = RotateYMatrix * MTX
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void mtxRotateYMatrix(float *mtx, float rad);
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// MTX = RotateZMatrix * MTX
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void mtxRotateZMatrix(float *mtx, float rad);
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// 3x3 MTX = 3x3 IdentityMatrix
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void mtx3x3LoadIdentity(float *mtx);
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// 3x3 MTX = 3x3 LHS x 3x3 RHS
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void mtx3x3Multiply(float *mtx, const float *lhs, const float *rhs);
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// 3x3 MTX = TopLeft of MTX
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void mtx3x3FromTopLeftOf4x4(float *mtx, const float *src);
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// 3x3 MTX = Transpose(3x3 SRC)
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void mtx3x3Transpose(float *mtx, const float *src);
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// 3x3 MTX = 3x3 SRC^-1
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void mtx3x3Invert(float *mtx, const float *src);
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#endif //__MATRIX_UTIL_H__
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