/** Set the position and scale of an image in screen coordinates */
protected boolean setPos(
float centerX,
float centerY,
float scaleX,
float scaleY,
float angle,
int flags,
boolean isDraggedOrPinched) {
// Reset the scale if the object is not scalable (otherwise the ws and
// hs calculations below are not 100% accurate and will result in a
// slight but noticable scaling of non-scalable objects
if (!isScalable()) {
scaleX = 1.0f;
scaleY = 1.0f;
}
// Reset the angle if the drawable is not rotatable (for the same reason
// as above)
if (!isRotatable()) {
this.setAngle(0.0f);
}
float ws = (width / 2) * scaleX, hs = (height / 2) * scaleY;
float newMinX = centerX - ws,
newMinY = centerY - hs,
newMaxX = centerX + ws,
newMaxY = centerY + hs;
float scaleXChange = 1.0f, scaleYChange = 1.0f, angleChange = 0.0f;
// Min and max values need to be set when item is dragged or scaled
if ((flags & FLAG_FORCEXY) != 0
|| this.isDragable()
|| (flags & FLAG_FORCESCALE) != 0
|| this.isScalable()) {
this.minX = newMinX;
this.minY = newMinY;
this.maxX = newMaxX;
this.maxY = newMaxY;
}
if ((flags & FLAG_FORCEXY) != 0 || this.isDragable()) {
this.centerX = centerX;
this.centerY = centerY;
}
if ((flags & FLAG_FORCESCALE) != 0 || this.isScalable()) {
scaleXChange = scaleX / this.scaleX;
scaleYChange = scaleY / this.scaleY;
this.setScale(scaleX, scaleY);
}
if ((flags & FLAG_FORCEROTATE) != 0 || this.isRotatable()) {
angleChange = angle - this.angle;
// this.angle = angle;
this.setAngle(angle);
}
if (isDraggedOrPinched && this.hasSuperDrawable()) {
PointF relativePosition = getRelativePositionToSuperobject();
// we do not want to use setRelativePosition, because this will
// overwrite the angle
// this.setRelativePosition(relativePosition.x, relativePosition.y);
this.setRelativePosition(relativePosition);
}
// Iterate through the subobjects and change their position
for (MultiTouchDrawable subobject : subDrawables) {
PointF absolutePosition = this.getAbsolutePositionOfSubobject(subobject);
subobject.setPos(
absolutePosition.x,
absolutePosition.y,
subobject.scaleX * scaleXChange,
subobject.scaleY * scaleYChange,
subobject.angle + angleChange,
FLAG_FORCEXY,
false);
}
return true;
}
