API Reference > geometry-core > Polyface > PolyfaceQuery > computePrincipalAreaMoments computePrincipalAreaMoments MethodStatic Compute area moments for the mesh. In the returned MomentData: origin is the centroid. localToWorldMap has the origin and principal directions radiiOfGyration radii for rotation around the x,y,z axes. computePrincipalAreaMoments(source: Polyface): MomentData | undefined Parameter Type Description source Polyface Returns - MomentData | undefined Defined in core/geometry/src/polyface/PolyfaceQuery.ts Line 227 Last Updated: 13 June, 2024