Skip to content
月离文档

setpackedtransform

Since17.0

void  setpackedtransform(int input, int primnum, matrix transform)

Sets the transform of a packed primitive. This modifies the P attribute of the primitive’s point as well as its intrinsic transform.

Warning This function replaces only the P (position) attribute and the transform intrinsic attribute. It ignores various details that the packedfulltransform intrinsic attribute includes:

  • The packed primitive’s pivot intrinsic attribute.
  • Instancing attributes such as orient (when the pointinstancetransform intrinsic attribute is on, as with crowd agents).
  • The packedlocaltransform intrinsic attribute (Alembic primitives).

So this function will not apply the expected transform in several different cases.

The getpackedtransform function has the same issues since it returns a transform only based on P and transform.

Examples

examples

// matrix to transform by
matrix tf = ident();
rotate(tf, radians(45), {0,1,0});
translate(tf, {0,1,0});


matrix transform = getpackedtransform(0, @primnum);
setpackedtransform(0, @primnum, transform * tf);