drawRawAtlas method

Implementation

void drawRawAtlas(Image atlas,
                  Float32List rstTransforms,
                  Float32List rects,
                  Int32List colors,
                  BlendMode blendMode,
                  Rect cullRect,
                  Paint paint) {
  assert(atlas != null); // atlas is checked on the engine side
  assert(rstTransforms != null);
  assert(rects != null);
  assert(colors != null);
  assert(blendMode != null);
  assert(paint != null);

  final int rectCount = rects.length;
  if (rstTransforms.length != rectCount)
    throw new ArgumentError('"rstTransforms" and "rects" lengths must match.');
  if (rectCount % 4 != 0)
    throw new ArgumentError('"rstTransforms" and "rects" lengths must be a multiple of four.');
  if (colors != null && colors.length * 4 != rectCount)
    throw new ArgumentError('If non-null, "colors" length must be one fourth the length of "rstTransforms" and "rects".');

  _drawAtlas(
    paint._objects, paint._data, atlas, rstTransforms, rects,
    colors, blendMode.index, cullRect?._value
  );
}