Mac: Black layer around magnetopause

[C. Philippe Escoubet]

Sometimes black layer around magnetopause when moving in phi (like if we would see magnetopause from tail (large white circle and black circle around)

[Erik Johansson]

I have so far not been able to reproduce this bug (Mac OS, ovt_macos_3_0_build6_BETA_commitf77d00b_2015-11-20.dmg). What do you mean by "when moving in phi"?

[C. Philippe Escoubet]

phi is in the camera pop-up. I was changing it with the cursor.

[C. Philippe Escoubet]

Here are my steps: 1. load a state file using Cluster ltof for 2016-06-04 02:00:00 for 2d 6h and 10 min step with magnetopause around 60% opacity 2. time of the s/c position is 2016-06-04 15:40. 3. Open view control and put R=80, delta=0, View-up =0 and move phi, we get the black circle at phi=0 and 360

[Erik Johansson]

The effect is not a bug but due to a confusing projection/angle. Can be seen when using Perspective and enabling magnetopause (Surface (not wireframe), 0%<opacity<100%) and looking at the Earth along the magnetopause symmetry axis from upstreams. At the right range of distances, the curvature of the magnetopause makes some rays from/to the camera cross the mangetopause twice, which is represented by a darker color compared to rays which only cross the magnetopause once.