method render

Source

@override
void render(RenderState renderState) {

  // We could use renderState.renderTextureMesh, it would work great with
  // the WebGL renderer but not so good with the Canvas2D renderer.

  var globalMatrix = renderState.globalMatrix;
  var renderContext = renderState.renderContext;
  var tempMatrix = globalMatrix.clone();

  var w0 = _slices[0].targetWidth;
  var h0 = _slices[0].targetHeight;
  var w1 = _slices[4].targetWidth;
  var h1 = _slices[4].targetHeight;
  var w2 = _slices[8].targetWidth;
  var h2 = _slices[8].targetHeight;

  for (int j = 0; j < 3; j++) {
    var sh = j == 0 ? h0 : j == 2 ? h2 : h1;
    var th = j == 0 ? h0 : j == 2 ? h2 : height - h0 - h2;
    var ty = j == 0 ? 0 : j == 1 ? h0 : height - h2;
    for (int i = 0; i < 3; i++) {
      var sw = i == 0 ? w0 : i == 2 ? w2 : w1;
      var tw = i == 0 ? w0 : i == 2 ? w2 : width - w0 - w2;
      var tx = i == 0 ? 0 : i == 1 ? w0 : width - w2;
      globalMatrix.setTo(tw / sw, 0, 0, th / sh, tx, ty);
      globalMatrix.concat(tempMatrix);
      renderContext.renderTextureQuad(renderState, _slices[i + j * 3]);
    }
  }

  globalMatrix.copyFrom(tempMatrix);
}