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75 lines
3.0 KiB
C++
75 lines
3.0 KiB
C++
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/*
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LICENSE
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-------
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Copyright 2005 Nullsoft, Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of Nullsoft nor the names of its contributors may be used to
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endorse or promote products derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <windows.h>
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#include <math.h>
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#include "r_defs.h"
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void matrixRotate(float matrix[], char m, float Deg) {
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char m1, m2;
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float c,s;
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Deg *= 3.141592653589f / 180.0f;
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memset(matrix,0,sizeof(float)*16);
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matrix[((m-1)<<2)+m-1] = matrix[15] = 1.0f;
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m1 = (m % 3);
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m2 = ((m1+1) % 3);
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c = (float)cos(Deg); s = (float)sin(Deg);
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matrix[(m1<<2)+m1]=c; matrix[(m1<<2)+m2]=s;
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matrix[(m2<<2)+m2]=c; matrix[(m2<<2)+m1]=-s;
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}
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void matrixTranslate(float m[], float x, float y, float z) {
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memset(m,0,sizeof(float)*16);
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m[0] = m[4+1] = m[8+2] = m[12+3] = 1.0f;
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m[0+3] = x; m[4+3] = y; m[8+3] = z;
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}
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void matrixMultiply(float *dest, float src[]) {
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float temp[16];
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int i;
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memcpy(temp,dest,sizeof(float)*16);
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for (i = 0; i < 16; i += 4) {
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*dest++ = src[i+0]*temp[(0<<2)+0]+src[i+1]*temp[(1<<2)+0]+
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src[i+2]*temp[(2<<2)+0]+src[i+3]*temp[(3<<2)+0];
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*dest++ = src[i+0]*temp[(0<<2)+1]+src[i+1]*temp[(1<<2)+1]+
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src[i+2]*temp[(2<<2)+1]+src[i+3]*temp[(3<<2)+1];
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*dest++ = src[i+0]*temp[(0<<2)+2]+src[i+1]*temp[(1<<2)+2]+
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src[i+2]*temp[(2<<2)+2]+src[i+3]*temp[(3<<2)+2];
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*dest++ = src[i+0]*temp[(0<<2)+3]+src[i+1]*temp[(1<<2)+3]+
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src[i+2]*temp[(2<<2)+3]+src[i+3]*temp[(3<<2)+3];
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}
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}
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void matrixApply(float *m, float x, float y, float z,
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float *outx, float *outy, float *outz) {
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*outx = x*m[0] + y*m[1] + z*m[2] + m[3];
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*outy = x*m[4] + y*m[5] + z*m[6] + m[7];
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*outz = x*m[8] + y*m[9] + z*m[10] + m[11];
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}
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