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Jef 2024-09-24 14:54:57 +02:00
parent 537bcbc862
commit fc06254474
16440 changed files with 4239995 additions and 2 deletions
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52
Src/Winamp/plush/CAM.C Normal file
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/******************************************************************************
Plush Version 1.2
cam.c
Camera Control
Copyright (c) 1996-2000, Justin Frankel
******************************************************************************/
#include "plush.h"
void plCamDelete(pl_Cam *c) {
if (c) free(c);
}
void plCamSetTarget(pl_Cam *c, pl_Float x, pl_Float y, pl_Float z) {
double dx, dy, dz;
dx = x - c->X;
dy = y - c->Y;
dz = z - c->Z;
c->Roll = 0;
if (dz > 0.0001f) {
c->Pan = (pl_Float) (-atan(dx/dz)*(180.0/PL_PI));
dz /= cos(c->Pan*(PL_PI/180.0));
c->Pitch = (pl_Float) (atan(dy/dz)*(180.0/PL_PI));
} else if (dz < -0.0001f) {
c->Pan = (pl_Float) (180.0-atan(dx/dz)*(180.0/PL_PI));
dz /= cos((c->Pan-180.0f)*(PL_PI/180.0));
c->Pitch = (pl_Float) (-atan(dy/dz)*(180.0/PL_PI));
} else {
c->Pan = 0.0f;
c->Pitch = -90.0f;
}
}
pl_Cam *plCamCreate(pl_uInt sw, pl_uInt sh, pl_Float ar, pl_Float fov,
pl_uChar *fb, pl_ZBuffer *zb) {
pl_Cam *c;
c = malloc(sizeof(pl_Cam));
if (!c) return 0;
memset(c,0,sizeof(pl_Cam));
c->Fov = fov;
c->AspectRatio = ar;
c->ClipRight = c->ScreenWidth = sw;
c->ClipBottom = c->ScreenHeight = sh;
c->CenterX = sw>>1;
c->CenterY = sh>>1;
c->ClipBack = 8.0e30f;
c->frameBuffer = fb;
c->zBuffer = zb;
c->Sort = 1;
if (zb) c->Sort = 0;
return (c);
}