Visualize rough interfaces in Img3D

Random surface generator temporary uses fixed seed.

In the subsequent MRs I need to consider optimization, when the surface is recomputed only when roughness parameter of the corresponding layer is changed.

There should also be separate button in sample builder to update random seed.

Almost finishes #57 (closed)

added 3DView label

requested review from @j.wuttke

assigned to @m.svechnikov

added 1 commit

• 9ef19041 - move out num points to sceneGeometry

Compare with previous version

Looks really great. A big improvement of BornAgain, and a unique feature.

I need to consider optimization ...

Only if you have a simple solution in mind that has only local effects. At the current stage I would oppose any optimisation that introduces additional coupling. Let us first get the signalling right, then we can reconsider caching. We already have a good solution for this in Steca; we need to develop BornAgain into that direction rather than adding new complications.

Shouldn't we enhance class double2d_t to avoid repetitions of trivial code?

The arrays top and bottom are passed through quite many function calls, making the API substantially more complicated. Why was this necessary; what alternative designs might help to avoid it?

added 4 commits

• c69c56ae - limit with assert
• f759253e - upd comments
• 30df3e77 - upd throw msgs
• 606928d5 - upd var name

Compare with previous version

added 2 commits

• e3d504a7 - mv roughness map generatin to createLayer
• 1de15e3d - use std::move

Compare with previous version

added 2 commits

• 009a6259 - add Base/Vector.h
• e2ccc2ec - rm local vector definitions

Compare with previous version

resolved all threads