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how do I get the view matrix?

By huanxsd on Wed, 06/20/2012 - 17:10
Forgive my bad English. I already know the model view matrix, :confused: Specifically how to calculate it, or ready-made method to get? This question bothers me a long time

The pose returned by the trackable is the same thing as a view matrix: [CODE] QCAR::Matrix44F modelViewMatrix = QCAR::Tool::convertPose2GLMatrix(trackable->getPose()); [/CODE] The convertPose2GLMatrix just turns the 3x4 row-major pose matrix into a 4x4 col-major matrix. Note this pose assumes a c

I'm sorry, I still do not understand.I know how to obtain modelViewMatrix, but it is not I want the final data. I want to know the coordinates of camera relative to the trackable.

If you take the inverse of the modelview matrix you'll get a matrix that defines the position/orientation of the camera in relation to a target sitting at the world origin. The fourth column of the matrix is the position. - Kim