Ray-Scaling Operations for Deformation of Soft Objects
Ray-Scaling Operations for Deformation of Soft Objects is a scholarly work, published in 2016 in ''Journal of Computers''. The main subjects of the publication include computer science, geometric modeling, isogeometric analysis, deformation, computer numerical control, and scaling. In soft object modeling, in order to make the shapes of primitive soft objects more diverse, this paper proposes ray-scaling operations to deform a primitive soft object.The proposed ray-scaling operations perform scaling via a given scaling object.But unlike scaling of affine transform which gives the same scaling factor to all the points, ray-scaling operations give each point in different directions an individual and a different scaling factor obtained from the ray-scaling object.As a result, by choosing suitable scaling objects, ray-scaling operations are able to erode or dilate a soft object locally with many special deformation effects.This paper also applies super-ellipsoids, super-quadrics and generalized distance functions to define a scaling object, and then successfully deforms a sphere into a six-balled, eight-balled or ten-balled object by using scaling objects of polyhedron, each of whose facets can deform to be a ball.