Autodesk, Inc.

Chakravarthy Gavini

Lisa Fox

Thomas M Inzinga

Bradford V Ek, Jr

Nagesh Narayanaswamy

Qiang Wu

Wei Huang

Tao Liu

Christopher Eric Putnam

Li Huang

John Murchie Lewis

Anandaraja Devan

Haibo Wang

Nicholas James Zeeben

Kumud Dev Vaidya

Guang Han

Yabin Xiao

Ming Chong

Kumud D Valdya

A method, apparatus, system, and computer program product provide the ability to design a road intersection in a three-dimensional (3D) modeling and visualization system. Two roads are defined in the system with the second road intersecting the first road. A set of design rules (that define characteristics of use that contribute to a shape of the road intersection) is acquired. Based on the set of rules, a 3D model of the road intersection is directly created. A property of one of the roads is modified. Without additional user input, the 3D model of the road intersection is automatically and dynamically updated based on the modified property and while maintaining conformance with the set of design rules.

Rule based three-dimensional (3D) intersection model

A method, system, apparatus, article of manufacture, and computer-program product provides the ability to generate a cross section for a roadway infrastructure model. A cutting plane line is drawn on the roadway infrastructure model at an arbitrary location. Portions of the roadway infrastructure model that intersect the cutting plane line are determined. Solids are created at the intersections. A cross section is formed by slicing the one or more solids based on the cutting plane line. The cross section is displayed.

Generating cross section for roadway infrastructure models

Embodiments of the invention provide a method, apparatus and article of manufacture for modeling a variety of three dimensional structures that may be represented as a longitudinal series of repeating cross-sections. In one embodiment, users construct each cross section from a collection of subassembly components selected from a catalog of subassemblies. Each subassembly is represented as a data component that stores modifiable parameters, and a logic component that generates a parameter-specific geometry of the subassembly for use in a cross-section of the model. A graphical user interface allows a user to select a subassembly, to modify the parameters for the subassembly, and to integrate the subassembly element into the computer model.

Graphical user interface for interactive construction of typical cross-section frameworks

Embodiments of the invention provide a method for creating a complete 3D model of complex infrastructure configurations, such as divided highways, roadway intersections, etc. Current CAD applications have been limited to creating 3D models based on the geometry of a single alignment. In one embodiment, each baseline for a 3D model using four data inputs: a topographical terrain model, an alignment specifying the longitudinal 2D geometry for the structure being modeled, a profile specifying the elevations of the baseline along the horizontal alignment, and the geometry for cross-sectional assemblies along the horizontal and vertical alignments.

Method for generating unified three-dimensional models of complex infrastructure configurations

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Amherst, NH, United States of America

Chakravarthy Gavini