Deformation Wrangle vs Attribute Wrangle

Last updated Sep 14, 2023 Edit Source

• Houdini
• Vex

Matrix transformations can be applied to “every” attribute in one go using the deformation wrangle.

• left: base
• middle: attribute wrangle transform
• right: deformation wrangle transform

• can apply the transformation only to one attribute at a time. In this example only @P

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matrix m = ident();
rotate(m, chf("angle"), 4);

v@P *= m;

• takes care of vectors and quaternions (such as N or orient) and transforms/deforms/rotates them properly
• can only update point or vertex attributes (no primitives)

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pos = pos;
xform = xform;

matrix m = ident();
rotate(m, chf("angle"), 4);

pos *= m;

Check out Roc Andic’s video I linked below to find out more!

sources / further reading:

• Houdini VEX: What’s so special about the deformation wrangle? - Roc Andic