Authors:
Pedro Brandão Silva
1
;
António Coelho
2
;
Rui Rodrigues
1
and
A. Augusto Sousa
2
Affiliations:
1
Universidade do Porto, Portugal
;
2
Universidade do Porto and 3Decide / Palcos da Realidade, Portugal
Keyword(s):
Geometry Modeling, CAD API, Procedural Modeling, Virtual Urban Environments.
Related
Ontology
Subjects/Areas/Topics:
CAGD/CAD/CAM Systems
;
Computer Vision, Visualization and Computer Graphics
;
Geometric Computing
;
Geometry and Modeling
;
Modeling and Algorithms
;
Scene and Object Modeling
Abstract:
This paper presents a solution for geometric manipulation in procedural modeling as an Application Programming Interface (API). This approach intends to enable a more powerful control over the geometric entities by performing selections based on their attributes, similar to picking features in graphical interfaces. This is achieved through the definition of a topological structure, which features a set of properties, such as scope, spatial localization and semantic information. The applicable modeling operations allow a more customized control, as well as successive tracking, which induce a greater, faster and more intuitive approach for geometry generation. This approach still constitutes ongoing work, but has already been successfully applied for the generation of large virtual urban environments.