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3D Graphics Rendering and Terrain Modeling

3D Graphics Rendering and Terrain Modeling. Technology and Historical Overview. By Ricardo Veguilla. Terrain Modeler Project Status. Previously implemented features. Application developed in C and tested exclusively on SGI.

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3D Graphics Rendering and Terrain Modeling

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  1. 3D Graphics Rendering and Terrain Modeling Technology and Historical Overview By Ricardo Veguilla

  2. Terrain Modeler Project Status

  3. Previously implemented features • Application developed in C and tested exclusively on SGI. • Terrain image loading tested with a 201x201 Matlab generated input file. • Terrain Modeling with OpenGL using points or unshaded polygons. • Fixed camera. • Terrain rotation and scaling. • Limited option for Level-of-detail (LOD) rendering.

  4. Newly Implemented Features • Support for Autotools for cross-platform development (currently tested on SGI and Linux). • Code modularization and refactoring. • Full virtual camera. • Memory Manager subsystem for monitoring memory utilization. • Preliminary Lighting support. • Preliminary support for rendering multiple terrains.

  5. Future Improvements • Full windowed application. • Support for screen captures. • Support for Land-marking (3D bookmarks) • Support for animation scripting and recording. • Support for simultaneous rendering of multiple terrains.

  6. Future Improvements (Cont.) • Restructure code to accommodate three module abstraction layers: • IO Layer – Modules for reading and writing terrain files of different formats. • Sampling Layer – Modules implementing different LOD algorithms with user-selected sampling value. • Rendering Layer – Modules for rendering the terrain using different OpenGL primitives, rendering attributes and vendor-optimized code paths.

  7. Long-term • Porting the project to Jogl: Java OpenGL • http://java.sun.com/products/jfc/tsc/articles/jcanyon/

  8. References: • Wikipidia – The Free Encyclopedia • http://www.wikipedia.org/ • OpenGL - The Industry Standard for High Performance Graphics • http://www.opengl.org/ • Google Image Search • http://images.google.com • Overview of 3D Interactive Graphics • http://www.siggraph.org/project-grants/com97/com97-tut.html • Linux Journal - Industry of Change: Linux Storms Hollywood • http://www.linuxjournal.com/article/5472 • JCanyon - Grand Canyon Demo • http://java.sun.com/products/jfc/tsc/articles/jcanyon/

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