computeVisibleRect method
Rect
computeVisibleRect(
)
Implementation
@protected
Rect computeVisibleRect() {
final viewportSize = camera.viewport.virtualSize;
final currentTransform = transform;
currentTransform.globalToLocal(_zeroVector, output: _topLeft);
currentTransform.globalToLocal(viewportSize, output: _bottomRight);
var minX = min(_topLeft.x, _bottomRight.x);
var minY = min(_topLeft.y, _bottomRight.y);
var maxX = max(_topLeft.x, _bottomRight.x);
var maxY = max(_topLeft.y, _bottomRight.y);
if (angle != 0) {
_topRight.setValues(viewportSize.x, 0);
_bottomLeft.setValues(0, viewportSize.y);
currentTransform.globalToLocal(_topRight, output: _topRight);
currentTransform.globalToLocal(_bottomLeft, output: _bottomLeft);
minX = min(minX, min(_topRight.x, _bottomLeft.x));
minY = min(minY, min(_topRight.y, _bottomLeft.y));
maxX = max(maxX, max(_topRight.x, _bottomLeft.x));
maxY = max(maxY, max(_topRight.y, _bottomLeft.y));
}
return Rect.fromLTRB(minX, minY, maxX, maxY);
}