[Radiance-general] replmarks and mirroring

[Lars O. Grobe]

Hi Carsten, hi list!

> if you look into the mirror, you don't see yourself upside down, so I 
> guess that formZ behaves correctly in leaving the normal unchanged 
> during mirroring :-)

In fact, it was what I had guessed. However, I wanted to be sure. Also, 
I wonder if there is any reason why the surface normal information is 
not used from the triangle.

I think, if I replace the call to fcross() in replmarks.c by a routine 
that aligns the z-achsis to the surface normal, mirroring 
transformations should be supported by replmarks, right? Is there a 
function to get the direction of the surface normal defined that I 
could use (I am sure it is, I just don't know where ;-) ?

Such a feature in replmarks would be very useful for me, as I could use 
just the triangle markers I have and I would not have to search for 
mirrored objects in the whole model, which would certainly introduce 
errors as I am rather sure that I would miss some objects.

CU Lars.
--
Lars O. Grobe
grobe at gmx.net