koobas.hobune.stream
How to check if object is skewed ?
Hi guys... i need some check for objects are they skewed...
My first idea was to check if local scale is equals to lossy scale, but i remembered that in group local scale multiplies to parent local scale... may be here we can do something like transform points... but i can't get whole image of solution, can you help me ?
Hmm.. i got new idea..
if (t.lossyScale == (t.TransformPoint(t.localScale)-t.position))
i'v tired.. tomorrow will check.. guys, any other ideas, or check this please ?
next my idea was Vector3.Dot(t.localScale.normalized, t.lossyScale.normalized) > (1.0f - Vector3.kEpsilon)
but it not working for grouped object, and fine for simple... thinking....
Ok, i've found another solution that doesn't requared check for skewness... but the question is staying up..
Here is how:
// Create a skew vector
Vector3 skew = transform.localScale; // scale of the transform for which you want to check if skewed
// Then iterate through all the parent transforms and do scalar multiplication
Transform parentTransform = transform.parent;
while(parentTransform != null)
{
skew = new Vector3(parentTransform.scale.x * skew.x, parentTransform.scale.y * skew.y, parentTransform.scale.z * skew.z);
parentTransform = parentTransform.parent;
}
// If the final skew is not equal to transform.lossyScale then the object is skewed
bool isSkewed = (skew != transform.lossyScale);
