"keyhole" effect on shear transformations about neuroglancer HOT 2 CLOSED

You are correct that shear transforms do not currently work. I don't think there is anything fundamental, but the code was originally written assuming only rotation/reflection/scaling/translation, and some of the geometric calculations likely need to be fixed.

I believe that off-axis rotations already work fine, e.g. see this link:

https://neuroglancer-demo.appspot.com/#!%7B%22layers%22:%7B%22corrected-image%22:%7B%22tab%22:%22transform%22%2C%22transform%22:%5B%5B0.7070000171661377%2C0.7070000171661377%2C0%2C0%5D%2C%5B-0.707099974155426%2C0.7070000171661377%2C0%2C0%5D%2C%5B0%2C0%2C1%2C0%5D%2C%5B0%2C0%2C0%2C1%5D%5D%2C%22source%22:%22precomputed://gs://neuroglancer-public-data/kasthuri2011/image_color_corrected%22%2C%22type%22:%22image%22%7D%7D%2C%22navigation%22:%7B%22pose%22:%7B%22position%22:%7B%22voxelSize%22:%5B6%2C6%2C30%5D%2C%22voxelCoordinates%22:%5B8194.5126953125%2C1684.4766845703125%2C892.2404174804688%5D%7D%7D%2C%22zoomFactor%22:16.852265417651154%7D%2C%22perspectiveOrientation%22:%5B-0.34601518511772156%2C-0.915300726890564%2C-0.20172466337680817%2C-0.04248835891485214%5D%2C%22perspectiveZoom%22:894.6849925932978%2C%22selectedLayer%22:%7B%22layer%22:%22corrected-image%22%2C%22visible%22:true%7D%7D

from neuroglancer.

This has finally been fixed.

from neuroglancer.