Which Coordinate system in getRayFromScreenCoordinates

[Silbermünze]

Hi everyone!

Just a short question:

Which coordinate system is the line specified in, which is returned by

Code: Select all

irr::scene::ISceneCollisionManager::getRayFromScreenCoordinates

Is it the camera space or world space?
The doc only says it starts at the camera position, but it would be interesting whether it is the camera postion in camera space (which obviously would be (0,0,0)) or the camera position in world space which would be something not (0,0,0) dependent on where you placed the camera.


Thanks in advance
Thoran

[rogerborg]

For a non-orthogonal camera, the ray start is camera->ViewArea.cameraPosition, which is the camera's absolute (world) position.

See the implementations of CSceneCollisionManager::getRayFromScreenCoordinates() and CCameraSceneNode::recalculateViewArea()