47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
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/******************************************************************************
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Plush Version 1.2
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light.c
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Light Control
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Copyright (c) 1996-2000, Justin Frankel
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******************************************************************************/
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#include "plush.h"
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pl_Light *plLightSet(pl_Light *light, pl_uChar mode, pl_Float x, pl_Float y,
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pl_Float z, pl_Float intensity, pl_Float halfDist) {
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pl_Float m[16], m2[16];
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light->Type = mode;
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light->Intensity = intensity;
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light->HalfDistSquared = halfDist*halfDist;
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switch (mode) {
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case PL_LIGHT_VECTOR:
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plMatrixRotate(m,1,x);
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plMatrixRotate(m2,2,y);
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plMatrixMultiply(m,m2);
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plMatrixRotate(m2,3,z);
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plMatrixMultiply(m,m2);
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plMatrixApply(m,0.0,0.0,-1.0,&light->Xp, &light->Yp, &light->Zp);
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break;
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case PL_LIGHT_POINT_ANGLE:
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case PL_LIGHT_POINT_DISTANCE:
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case PL_LIGHT_POINT:
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light->Xp = x;
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light->Yp = y;
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light->Zp = z;
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break;
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}
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return light;
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}
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pl_Light *plLightCreate() {
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pl_Light *l;
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l = malloc(sizeof(pl_Light));
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if (!l) return 0;
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memset(l,0,sizeof(pl_Light));
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return (l);
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}
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void plLightDelete(pl_Light *l) {
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if (l) free(l);
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}
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