filledTrigonColor function 
 
    
    
    
  Implementation
  bool filledTrigonColor(
  Pointer<SdlRenderer> renderer,
  double x1,
  double y1,
  double x2,
  double y2,
  double x3,
  double y3,
  int color, {
  int blendMode = SDL_BLENDMODE_BLEND,
}) {
  final vx = calloc<Int16>(3);
  final vy = calloc<Int16>(3);
  vx[0] = x1.toInt();
  vx[1] = x2.toInt();
  vx[2] = x3.toInt();
  vy[0] = y1.toInt();
  vy[1] = y2.toInt();
  vy[2] = y3.toInt();
  final result = filledPolygonColor(
    renderer,
    vx,
    vy,
    3,
    color,
    blendMode: blendMode,
  );
  calloc
    ..free(vx)
    ..free(vy);
  return result;
}