cageform

Cageform is a term used in computer graphics and animation to describe a specific mesh deformation technique. It allows artists to manipulate a complex 3D model by deforming a simpler "cage" mesh that surrounds it. The deformation applied to the cage is then transferred to the enclosed model.

This method simplifies the rigging and animation process for intricate objects. Instead of directly manipulating thousands of polygons on a character or complex object, animators can control a much smaller, more manageable cage. This significantly speeds up workflow and makes complex deformations more intuitive. The cage mesh is typically a low-polygon approximation of the object's form. When the vertices of the cage are moved, the software calculates how the surface of the inner object should be warped to match.

Cageform is particularly useful for organic shapes, character animation, and situations where subtle but precise control over form is required. It can be employed in various 3D software packages, often as a specialized tool within broader animation or modeling suites. The underlying mathematical principles involve interpolation and spatial mapping to ensure smooth and predictable deformation transfer.