1 files changed, 52 insertions, 0 deletions
diff --git a/Src/Winamp/plush/CAM.C b/Src/Winamp/plush/CAM.C
new file mode 100644
index 00000000..3d122a13
--- /dev/null
+++ b/Src/Winamp/plush/CAM.C
@@ -0,0 +1,52 @@
+/******************************************************************************
+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);
+}