Volume 09 Issue 03, April-May 2021

FIELD FUNCTIONS WITH SURFACE-DEFINED INFLUENTIAL RADII AND THEIR APPLICATIONS

Pi-Chung Hsu

Page no:01-10

Abstract

In soft object modeling, soft objects are defined as a level surface of field functions, and a complex object can be connected smoothly through Boolean set blends. Because field functions are required to decrease to zero within the influential radius, union of soft objects is obtained easily by performing sum operation only, called soft blend. Besides, field functions with adjustable influential radii were also developed to adjust the size of the resulting set blends. However, the level surfaces of existing field functions always have similar shapes and sizes like the shape and size of soft object. As a result, unwanted blends and unnecessary bulges could be generated. To solve these problems, this paper proposes field functions with surface-defined influential radii, that is, it allow freely choosing implicit surfaces to define its inner and outer influential radii with any shapes. Thus, unwanted blend is removed by assigning blended primitives influential radii which does not contain the regions where unwanted blends lie; unnecessary bulge is avoided by assigning blended primitives influential radii which do not contain the region where unwanted bulges are located.