What are reasonable values for focal length?

[svandenhaute]

I can't succeed in rendering .svg's with perspective. Any time I try to set the focal length to anything except None, he ends up creating an invalid SVG, or if it is valid, something which looks completely off. I've installed the latest cinemol master.
See below for an example SDF molecule

     RDKit          3D

  7  6  0  0  0  0  0  0  0  0999 V2000
    1.1219    1.1718   -0.7086 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.6238    0.1250   -0.5602 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4183   -0.1429    0.4164 C   0  0  1  0  0  0  0  0  0  0  0  0
    0.9436   -0.7026   -1.2411 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.1615   -0.1105    1.4799 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.1255    0.7045    0.3051 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.9839   -1.0453    0.3085 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0
  2  3  1  0
  2  4  1  0
  3  5  1  1
  3  6  1  0
  3  7  1  0
M  END

[davidmeijer]

Thank you for trying out CineMol! I'm out today but I'll look into your issue tomorrow.

[svandenhaute]

Any updates ? :)

[davidmeijer]

Sorry for the communication silence! I had a look and it seems to be an implementation error. I'll need to release a new major version, but I won't be able to work on it now because I'm on holiday. I'll be back August 12 and roll out a new version.

[svandenhaute]

Thanks, looking forward!

[svandenhaute]

@davidmeijer any updates?

[davidmeijer]

Sorry, work caught up on me. I will be implementing changes on this branch, if you want to follow along. I will let you know when the branch gets merged.

[davidmeijer]

Sorry this took so long @svandenhaute! I have created a draft reimplementation of the focal length.

Drawing without focal length:
cinemol mol.sdf mol_without_focal_length.svg -hs -r 100 -sc 4

Drawing with focal length:
cinemol mol.sdf mol_without_with_focal_length.svg -hs -r 100 -sc 4 -fl 20.0

Does this look right to you?

[davidmeijer]

Fix implemented in version 1.0.2.