Efficiently using graphics hardware in volume rendering applications
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
An improved z-buffer CSG rendering algorithm
HWWS '98 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware
Fast volumetric CSG modeling using standard graphics system
Proceedings of the seventh ACM symposium on Solid modeling and applications
Near Real-Time CSG Rendering Using Tree Normalization and Geometric Pruning
IEEE Computer Graphics and Applications
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Constructive Solid Geometry (CSG) creates complex 3-dimensional shapes as unions, intersections, and differences of primitive objects (such as spheres, cones, etc.). For example, an ice cream cone can be modeled as the union of a cone and a sphere. Primitives used as operands to unions, intersections and on the left side of differences are positive, primitives used on the right side of differences are negative. CSG information is stored in a CSG Tree, whose internal nodes represent set operations and whose leaves represent primitives. The resulting object is contained within a cubical bounding box.