Set home view to 180 degree rotation from default?

[alecjacobson]

I know that I can set the camera view lookat, but then I have to figure out the center position etc. etc. I like that the home view is data dependent and has a natural default. Unfortunately, most of the models I have are facing backward. Is there an easy way to set the home view to have the z-axis pointing the other way? (rotate by 180 around Y)

libigl vs polyscope on libigl/tests/data/bunny.off

[nmwsharp]

Hmmmm good question. There's not really any easier way to do this now. And in particular, there's nothing that would "persist" in the sense that it would take you back to the view you've selected if you e.g. clicked Reset View.

Perhaps we could add a config setting much like up direction Z_up setting, there could be a corresponding forwardDir choice?

[nmwsharp]

The view matrix is a glm::mat4 at polyscope::view::viewMat, you could always just multiply it by a rotation matrix at startup or something or something.

There is some logic that lazily waits to initialize the view matrix until there is some data in the scene, so I thiiiiiink you want to call polyscope::view::ensureViewValid() before messing with the view matrix.

[alecjacobson]

thanks. I'll try that for now.

[nmwsharp]

There is now a polyscope::view::frontDir variable which sets the default front viewing direction, and as of commit da965d3 the default is changed to ZFront as mentioned above. Thanks for filing the issue!