protected PointF getAbsolutePositionOfSubobject(MultiTouchDrawable subobject) {
float xBeforeRotate = this.minX + subobject.getRelativeX() * scaleX;
float yBeforeRotate = this.minY + subobject.getRelativeY() * scaleY;
float radius =
(float)
Math.sqrt(
Math.pow(Math.abs(centerX - xBeforeRotate), 2)
+ Math.pow(Math.abs(centerY - yBeforeRotate), 2));
float angleBeforeRotate = (float) Math.atan2(yBeforeRotate - centerY, xBeforeRotate - centerX);
float newAngle = angle + angleBeforeRotate;
float newY = (float) (centerY + radius * Math.sin(newAngle));
float newX = (float) (centerX + radius * Math.cos(newAngle));
// Move the drawable according to it's pivot point if one is set
if (subobject.isCustomPivotUsed()) {
if (subobject.angle == 0.0f) {
newX -= subobject.getPivotXRelativeToCenter() * subobject.scaleX;
newY -= subobject.getPivotYRelativeToCenter() * subobject.scaleY;
} else {
PointF pivotPosition = subobject.getPivotPointPositionConsideringScalingAndAngle();
newX -= pivotPosition.x;
newY -= pivotPosition.y;
}
}
return new PointF(newX, newY);
}
