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  1. superformulas.hipnchi guys, i'm new to houdini, trying to translate in vex the Superformula 3d http://paulbourke.net/geometry/supershape/ I did a tuto that create superformula in 2d. Definition of supershape in 2 dimensions. But im stuck in implementing the Extension to 3D using the spherical product. I don't know how to bound my angles beetween -PI and PI and -PI/2 to PI/2 and also if I need to create normal. then Ill create a mesh. Here is my hip file. Thks for reading, salve! reference :https://en.wikipedia.org/wiki/Superformula http://mysterydate.github.io/superFormulaGenerator/ HIP FILE: superformulas.hipnc