Animate with dump pictures from command line #1632

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nairaner opened this Issue Apr 25, 2016 · 5 comments

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@nairaner

Adding option to use animation would be useful for specifying output image resolution, which would allow downsampling for better animation, as well as animation of more complicated models.

@t-paul
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t-paul commented Apr 25, 2016

Animation is basically a GUI feature, but it's possible to just give the $t parameter manually on command line like openscad -D$t=0.2 -o out.png in.scad which should have pretty much the same effect when calling multiple times with varying values.

@nairaner

It works, but it is very slow due to reload of all files when making each file

@t-paul
Member
t-paul commented Apr 25, 2016

The idea is to provide some means for persistent caching which would help for multiple use cases including this one.

@kintel kintel added the New Feature label May 2, 2016
@kintel
Member
kintel commented May 2, 2016

I guess it's conceivable to have a cmd-line option to specify animation parameters, and run the preview-to-png renderer in a loop. It's kind of crossing into application scripting though.

@Hexelena
Hexelena commented May 14, 2016 edited

I would like to add that when running in a shell like bash, you have to put the $t=0.2 in quotation marks like:
openscad -D'$t=0.2' -o out.png in.scad
Otherwise it will be interpreted as shell variable.
Also the viewport variables $vpt, $vpr and $vpd are not used when run from command line. You have to use the --camera option.

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