Sprite Rendering
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The document discusses the key steps and concepts involved in rendering sprites for games. It explains that rendering involves describing a virtual scene and camera, defining light sources and surface properties, and solving the render equation. It also discusses triangle meshes, texture mapping, 3D projection, coordinate systems, sprite components like transformation matrices, and orthographic projection. The overall rendering process for sprites involves applying transformations, scaling, rotation and translation to the sprites.
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Sprite Rendering
- 1. Sprite RenderingGames, Interaction and Robotics 2011
- 4. Rendering StepsA virtual scene is described, usually in terms of 3D surfaces in mathematical form.A virtual camera is positioned and oriented to produce the desired view of the scene.Various light sources are defined.The visual properties of the surfaces in the scene are described.The render equationis solved.Chapter 10. Game Engine Architecture, 2009, A K Peters, Ltd.
- 5. Triangle MeshesAn example of a polygon mesh. Chrschn, 2007.
- 6. Texture MappingA depiction of how UV-Mapping works, showing the classic example of mapping a globe. Drawing by TSchmits, 2008.
- 7. 3D ProjectionPrinciple of the geometrical perspective projection. Drawing by Joachim Baecker, 2005.
- 8. Coordinate SystemsLeft-HandedRight-HandedHandedness cartesian coordinate system in 3D. Gustavb, 2006.
- 9. What’s in a Sprite?
- 10. What’s in a Sprite?
- 16. Orthographic ProjectionProjection lines orthogonal to projection plane.Distance to viewpoint does not decrease apparent size of object.
- 18. BibliographyGame Engine Architecture, Jason Gregory, 2009, A K Peters, Ltd.OpenGL® Programming Guide: The Official Guide to Learning OpenGL®, Version 2.1, 6th Edition, 2007, Addison-Wesley Professional