Inverse of CameraProject
Blitz3D Forums/Blitz3D Programming/Inverse of CameraProject
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| how can i know a 3d position giving x and y viewport coordinates and a distance? Thanks in Advance! |
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| If you put a flat mesh at the correct distance in front of the camera, make it pickable and do a camerapick() you will get what you need from PickedX/Y/Z(). The mesh can have an alpha of 0.0 of course. |
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| Well, thanks, but there could be some object in front... |
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| after about 50 post edits heh everything you need can be found in this example: http://www.blitzbasic.com/codearcs/codearcs.php?code=379 below is a version I used in a specific situation with the Z distance specified. Function PositionEntityFrom2D (usecam, entity, x2d#, y2d#, z3d#, positionGlobal = 0, camZoom# = 1.0) gw = camWidth gh = camHeight dx# = -((gw / 2) - x2d) dy# = (gh / 2) - y2d parent = GetParent (entity) EntityParent entity, usecam ;z3d# = Abs (EntityZ (entity)) div# = (gw / (2 / camzoom)) / z3d PositionEntity entity, dx / div, dy / div, z3d, positionGlobal EntityParent entity, parent End Function |
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| mmm, Thanks!. I have been playing with TFormPoint. It seems that TFormPoint function makes something similar: TFormPoint Mousex()-CamWidth/2.0,CamHeight/2.0-MouseY(),Z#,Camera,0 is it ok? P.D: Anyway, that code works perfect, thanks! |
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