Dade wrote: ↑Fri Aug 24, 2018 3:16 pm
Volume scattering will eventually scatter the light in laser beam toward the camera and will make the laser light, inside the volume, visible. This will however affect (uniformly) the amount of light transported by the laser beams.
Yes, for my pictures (see above) I currently use a world volume with white scattering (hence black when inverted in photoshop). The scattering scale is 0.1 which is a compromise between visibility and outshining and the change of geometry by brightly shining laser beams.
Dade wrote: ↑Fri Aug 24, 2018 3:16 pm
The question is what are you exactly trying to obtain, a measured numeric values of the light beams, only a visual feedback, etc.
Best would be an automatic notation of each part of the ligth path like I have started manually in my picture. Similar to the Blender viewport with lengths and angles
. But I think I cannot expect that.
Second best would be a visualization of the light intensity by colours. Starting with a white laser the colour could change according to the remaining light intensity. So, for example red for >50%, yellow for >25%, green for >12%, light blue for >6%, blue for >3%, purple for >1%
In luxCoreRender there is probably the absolute value for the light intensity available, otherwise the white scattering could not be graded so well.
Perhaps it is possible to calculate this absolute value as a percentage of the initial light intensity of the laser and to choose the color accordingly from the color wheel.
That would, however, exceed my current capabilities and I would probably first have to learn Phyton for LuxCore
.