THE BLOB TREE- WARPING, BLENDING AND BOOLEAN OPERATIONS IN AN IMPLICIT SURFACE MODELING SYSTEM
Date
1998-03-01
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Automatic blending has characterized the major advantage of implicit surface
modeling systems. Recently, the introduction of deformations based on space
warping and boolean operations between primitives has increased the usefulness
of such systems. We propose a further enhancement which will greatly enhance
the range of models that can be easily and intuitively defined with a skeletal
implicit surface system. We describe an hierarchical method which allows
arbitrary compositions of models that make use of blending, warping and
boolean operations. We call this structure the BlobTree. Blending and space
warping are treated in the same way as union, difference and intersection,
i.e. as nodes in the BlobTree. The traversal of the BlobTree is described
along with two rendering algorithms; a polygonizer and a ray tracer. We
present some examples of interesting models which can be made easily using
our approach that would be very difficult to represent with conventional
systems.
Description
Keywords
Computer Science