Implements IRayPicker to provide ray intersection query against streamed terrain collision resources. Collision resources are provided by ICollisionBvhProvider (an appropriate instance can be obtained via EegeoWorld::GetCollisionMeshResourceProvider)
| bool Eegeo::Resources::Terrain::Collision::TerrainRayPicker::TryGetRayIntersection |
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const Eegeo::dv3 & |
rayOrigin, |
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const Eegeo::dv3 & |
rayDirection, |
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Eegeo::dv3 & |
out_ecefIntersectionPoint, |
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double & |
out_param |
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virtual |
Performs a ray intersection query against streamed terrain collision mesh resources. If an intersection is found, returns true, with intersection information passed in out parameters. If no intersection with terrain collision mesh is found, a fallback test is performed. If the ray intersects the Earth-sphere (a sphere with radius of Earth at sea-level), terrain height is queried at this point. If successful, the point on terrain above the Earth-sphere intersection is assiged as output parameter, and returns true. If fallback test also fails to find an intersection, returns false.
- Parameters
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| rayOrigin | start point of ray, in Ecef coordinates |
| rayDirection | normalised direction of ray, in Ecef coordinates |
| out_ecefIntersectionPoint | [out] point of intersection in Ecef coordinates if successful, else zero vector |
| out_param | [out] distance in metres from rayOrigin to out_ecefIntersectionPoint if successful, else zero |
- Returns
- true if intersection found, else false
Protected Member Functions inherited from Eegeo::NonCopyable
1.8.3.1
