Lofting Originated in boat design 2 D cross-sections placed in 3 D space are connected by side faces to form a 3 D shape.
Extrusion Also called projection A copy of a 2 D profile is made and translated and then the original and copied profiles are connected by side faces to form a 3 D shape.
Sweeping 2 D cross-section is swept along a 3 D path to create a 3 D shape.
Surface of revolution 2 D profile is rotated around an axis to create a 3 D shape.
Boolean operations Boolean operation -- union (or, “u”), intersection (and, “n”), or difference (not, “-”) -is applied to a pair of objects. Au. B An. B A-B B-A
Boolean operations Cookie SOP in Houdini Can produce a complicated object with a repeated used of operations. Prone to computational errors.
Assignment 12 Create 3 D models of three different kinds of sea shells. At least one should be a univalve (a single coiled shell), the other(s) a bivalve. Color each model with at least two colors using Group SOPs. Make them as realistic as you can.