On Jul 20, 2015, at 5:03 PM, Brad Hollister <behol...@soe.ucsc.edu> wrote:
> I assume there isn't any functionality that does this, even in a
> related form? If not, this could be easily handled with a field such
> as:
That is a correct assumption, though one that has been discussed before. We
also need some means for describing a UV mapping and/or other per vertex / edge
/ face information. Maybe there’s some generic way we can assign metadata to
elements and markings could be stored there.
> struct model {
> ...
> struct bu_list mark; /**< @brief list of marked model parts */
> };
Possibly, but I’m not sure we’d want separate pointers (it should probably be a
pointer) for the other metadata like per-vertex colors. If the set of metadata
is limited, that might be the most efficient option, however.
> Is there a preference as to how parts are to be specified? There isn't
> an obvious way to do this with the command-line. I do have a few ideas
> that I will post on the Wiki and request feedback for.
No preference other than it should be as simple as possible since the structure
itself is already really complicated to understand. I don’t think the user
should need to understand radial edge (or winged or whatever else) to use the
command-line.
> Once a part(s) are marked, how should this be evident in the real-time
> rendering? Can individual parts of a model's color be specified in the
> code?
There’s already a key=value attribute system on all objects that can be used
for relatively simple values (like colors). Technically, you could store
pretty much anything but it’s currently string=string so you’d have a
serialization/deserialization cost. There is experimental support for binary
attributes that Tom worked on over a year ago, but that has to be tested before
getting put to use.
Cheers!
Sean
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