منابع مشابه
Implicit Blending Revisited
Blending is both the strength and the weakness of functionally based implicit surfaces (such as F-reps or softobjects). While it gives them the unique ability to smoothly merge into a single, arbitrary shape, it makes implicit modelling hard to control since implicit surfaces blend at a distance, in a way that heavily depends on the slope of the field functions that define them. This paper pres...
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The implicit surface modelling technique can be used to model “soft” objects, objects whose surface or topology changes over time. It offers the opportunity of modelling and animating relatively complex shapes using only a few primitives. The final object is constructed by blending the primitives, and as the primitives are moved the blended surface changes shape. This can cause problems with ob...
متن کاملControlled Blending of Procedural Implicit Surfaces
Implicit surfaces are becoming increasingly popular in geometric modeling. Procedurally defined implicit surfaces, in particular surfaces built around skeletons, provide an intuitive representation for many natural objects, and objects commonly used in geometric modeling. This paper presents several techniques that provide good control over the way different skeletally defined implicit surfaces...
متن کاملBlending Implicit Shapes Using Fuzzy Set Operations
Implicit modelling is a powerful technique to design geometric shapes, where a geometric object is described by a real function. In general, the real functions used in implicit modelling are unbounded and can take any values in space R. In general, the shapes described by different level sets of an unbounded implicit function can be varied significantly and are very unpredictable. In addition, ...
متن کاملBlending Basic Implicit Shapes Using Trivariate Box Splines
To blend be~ween simple implicit surfaces, such as the sphere, the cone, the cylinder and the torus, we propose La locally employ the zero set of a serendipitous trivariate box spline. This box spline is defined by seven directions that form a regular partition of space into tetrahedra. The resulting blend surface is curvature continuous. An approxlmateparametrization of the piecewise implicit ...
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ژورنال
عنوان ژورنال: Computer Graphics Forum
سال: 2010
ISSN: 0167-7055
DOI: 10.1111/j.1467-8659.2009.01606.x