public virtual AsMatrix getTransformationMatrix(AsDisplayObject targetSpace, AsMatrix resultMatrix)
{
if (resultMatrix != null)
{
resultMatrix.identity();
}
else
{
resultMatrix = new AsMatrix();
}
AsDisplayObject currentObject = this;
if (targetSpace == this)
{
return(resultMatrix);
}
else
{
if (targetSpace == mParent || (targetSpace == null && mParent == null))
{
if (mPivotX != 0.0f || mPivotY != 0.0f)
{
resultMatrix.translate(-mPivotX, -mPivotY);
}
if (mScaleX != 1.0f || mScaleY != 1.0f)
{
resultMatrix.scale(mScaleX, mScaleY);
}
if (mRotation != 0.0f)
{
resultMatrix.rotate(AsMathHelper.toRadians(mRotation));
}
if (mX != 0.0f || mY != 0.0f)
{
resultMatrix.translate(mX, mY);
}
return(resultMatrix);
}
else
{
if (targetSpace == null)
{
currentObject = this;
while (currentObject != null)
{
currentObject.getTransformationMatrix(currentObject.mParent, sHelperMatrix);
resultMatrix.concat(sHelperMatrix);
currentObject = currentObject.getParent();
}
return(resultMatrix);
}
else
{
if (targetSpace.mParent == this)
{
targetSpace.getTransformationMatrix(this, resultMatrix);
resultMatrix.invert();
return(resultMatrix);
}
}
}
}
sAncestors.setLength(0);
AsDisplayObject commonParent = null;
while (currentObject != null)
{
sAncestors.push(currentObject);
currentObject = currentObject.getParent();
}
currentObject = targetSpace;
while (currentObject != null && sAncestors.indexOf(currentObject) == -1)
{
currentObject = currentObject.getParent();
}
if (currentObject == null)
{
throw new AsArgumentError("Object not connected to target");
}
else
{
commonParent = currentObject;
}
currentObject = this;
while (currentObject != commonParent)
{
currentObject.getTransformationMatrix(currentObject.mParent, sHelperMatrix);
resultMatrix.concat(sHelperMatrix);
currentObject = currentObject.getParent();
}
sTargetMatrix.identity();
currentObject = targetSpace;
while (currentObject != commonParent)
{
currentObject.getTransformationMatrix(currentObject.mParent, sHelperMatrix);
sTargetMatrix.concat(sHelperMatrix);
currentObject = currentObject.getParent();
}
sTargetMatrix.invert();
resultMatrix.concat(sTargetMatrix);
return(resultMatrix);
}
private static bool epsilonEquals(float a, float b)
{
return(AsMathHelper.epsilonEquals(a, b));
}
