Collision mesh: Difference between revisions
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TomEdwards (talk | contribs) (can't have a totally flat collision mesh) |
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A collision mesh is not visually represented to the player, and should be extremely low-detail compared to any [[Reference mesh|reference]] or [[LOD mesh|LOD]] meshes - see the images to the right for two examples. The lack of precision will not be noticed, except in that it doesn't grind the simulation to a halt! | A collision mesh is not visually represented to the player, and should be extremely low-detail compared to any [[Reference mesh|reference]] or [[LOD mesh|LOD]] meshes - see the images to the right for two examples. The lack of precision will not be noticed, except in that it doesn't grind the simulation to a halt! | ||
There is one major restriction with collision meshes: like [[brush]]es, they must be [[Wikipedia:Convex|convex]]. Multiple collision meshes can be used in the same model however, so this is rarely if ever an insurmountable problem. | There is one major restriction with collision meshes: like [[brush]]es, they must be [[Wikipedia:Convex|convex]] (and three-dimensional). Multiple collision meshes can be used in the same model however, so this is rarely if ever an insurmountable problem. | ||
== See also == | == See also == | ||
Revision as of 13:56, 5 January 2009
A collision mesh (sometimes collision model, though it is actually only ever a component of a model) is a cheap 3D mesh used by Source to calculate VPhysics collisions.
A collision mesh is not visually represented to the player, and should be extremely low-detail compared to any reference or LOD meshes - see the images to the right for two examples. The lack of precision will not be noticed, except in that it doesn't grind the simulation to a halt!
There is one major restriction with collision meshes: like brushes, they must be convex (and three-dimensional). Multiple collision meshes can be used in the same model however, so this is rarely if ever an insurmountable problem.
See also
- Physics and Ragdolls
- $collisionmodel - QC command for collision meshes without moving parts
- $collisionjoints - QC command for collision meshes with moving parts