internal override Vector2X[] adjustUVs(Vector2X[] uv, Vector2X[] result = null)
{
SubTextureX texture = this;
_transform2X.identity();
while (texture != null)
{
_transform2X = Transform2X.multiply(_transform2X, texture.transform);
texture = texture.parent as SubTextureX;
}
Vector2X item;
if (result == null)
{
result = new Vector2X[4];
}
for (int i = 0; i < 4; i++)
{
item = uv[i];
result[i] = _transform2X.transformVector(item);
}
return(result);
}
public Transform2X getTransformationMatrix(DisplayObjectX targetSpace, Transform2X resultMatrix = null)
{
DisplayObjectX commonParent;
DisplayObjectX currentObject;
if (resultMatrix != null)
{
resultMatrix.identity();
}
else
{
resultMatrix = new Transform2X();
}
if (targetSpace == this)
{
return(resultMatrix);
}
else if (targetSpace == mParent || (targetSpace == null && mParent == null))
{
resultMatrix.copyFrom(transform);
return(resultMatrix);
}
else if (targetSpace == null || targetSpace == stage)
{
// targetCoordinateSpace 'null' represents the target space of the base object.
// -> move up from this to base
currentObject = this;
while (currentObject != targetSpace)
{
resultMatrix = Transform2X.multiply(resultMatrix, currentObject.transform);
currentObject = currentObject.mParent;
}
return(resultMatrix);
}
else if (targetSpace.mParent == this) // optimization
{
targetSpace.getTransformationMatrix(this, resultMatrix);
resultMatrix.invert();
return(resultMatrix);
}
// 1. find a common parent of this and the target space
commonParent = findCommonParent(this, targetSpace);
// 2. move up from this to common parent
currentObject = this;
while (currentObject != commonParent)
{
resultMatrix = Transform2X.multiply(resultMatrix, currentObject.transform);
currentObject = currentObject.mParent;
}
if (commonParent == targetSpace)
{
return(resultMatrix);
}
// 3. now move up from target until we reach the common parent
sHelperTransform.identity();
currentObject = targetSpace;
while (currentObject != commonParent)
{
sHelperTransform = Transform2X.multiply(sHelperTransform, currentObject.transform);
currentObject = currentObject.mParent;
}
// 4. now combine the two matrices
sHelperTransform.invert();
resultMatrix = Transform2X.multiply(resultMatrix, sHelperTransform);
return(resultMatrix);
}
