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Aiming targets without lookat

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Joined: 2006-11-17


I need to make a targeting system that progressively aims some object in the space from a fixed point (pratically pointing stars in the sky from Earth).

Given 2 objects at different coordinates, I compute their angles on the XZ and YZ plane using Math.atan2(y1,x1). In this case I have no problem, even if some hints for using
aVector3d.angle(anotherVector3d) could be really appreciated.

My problem occurs when some rotation have been applied to the viewer axes, I cannot figure out how to obtain the local viewer Z axis respect to its world Z axis for calculating the angle between them.

Please, can you help me? Thanks

sorry for my poor English :)

Just for other people searching fast solutions, solved calculating heading, attitude and banking of the viewer. For more information see great documentation provided by Martin Baker on his website

Message was edited by: fravalle