Reply To: Local water tool rain column fails to render when fixProjectorView=true

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#116018
Oliver Kreylos
Keymaster

That is correct; the projector calibration matrix overrides Vrui’s navigation and viewing transformation in -fpv mode. As the calibration matrix is an arbitrary projective transformation, to support all possible alignments between projector and camera including keystone distortion, it can not be fully recreated by Vrui’s transformations, which are uniformly scaled rigid body transformations. The best option is to align those two transformations as closely as possible, in which case interaction with UI components such as virtual input devices will work quite well.

Start SARndbox without -fpv, and use the normal mouse navigation tool to align the 3D model as best as you can with the 3D sand surface by rotating, panning, and scaling. Then save the current viewpoint (Vrui system menu, view, save view), and afterwards start SARndbox with -fpv -loadView <viewpoint file name> That will load the manually-aligned view, and now Vrui objects including virtual input devices will be rendered almost in the correct places.

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