Function DrawFogLayer

Descent3/terrainrender.cpp:1248–1273

Draws a flat fog layer

#define FOG_LAYER_HEIGHT (TERRAIN_HEIGHT_INCREMENT * 30.5f)
// Draws a flat fog layer
void DrawFogLayer() {
  vector worldvec[4];
  g3Point pnt[4], *pntlist[6];
  rend_SetFlatColor(GR_RGB(132, 132, 255));
  rend_SetAlphaValue(64);
  rend_SetAlphaType(AT_CONSTANT);
  rend_SetTextureType(TT_FLAT);
  rend_SetLighting(LS_NONE);
  worldvec[0].x = 0;
  worldvec[0].y = FOG_LAYER_HEIGHT;
  worldvec[0].z = 0;
  worldvec[1].x = 0;
  worldvec[1].y = FOG_LAYER_HEIGHT;
  worldvec[1].z = TERRAIN_DEPTH * TERRAIN_SIZE;
  worldvec[2].x = TERRAIN_WIDTH * TERRAIN_SIZE;
  worldvec[2].y = FOG_LAYER_HEIGHT;
  worldvec[2].z = TERRAIN_DEPTH * TERRAIN_SIZE;
  worldvec[3].x = TERRAIN_WIDTH * TERRAIN_SIZE;
  worldvec[3].y = FOG_LAYER_HEIGHT;
  worldvec[3].z = 0;
  for (int i = 0; i < 4; i++) {
    g3_RotatePoint(&pnt[i], &worldvec[i]);
    pntlist[i] = &pnt[i];
  }
  g3_DrawPoly(4, pntlist, 0);
}
#define CLOUD_LAYER_HEIGHT (TERRAIN_HEIGHT_INCREMENT * 320.0f)
// Draws a flat fog layer
void DrawCloudLayer() {