return null;
}
if (at == null) {
at = new AffineTransform();
}
ROIGeometry roiGeometry = roiCache.get(at);
if (roiGeometry == null) {
Geometry rescaled;
AffineTransformation geometryAT = new AffineTransformation(at.getScaleX(), at.getShearX(), at
.getTranslateX(), at.getShearY(), at.getScaleY(), at.getTranslateY());
if (inset > 0) {