Model plugin

[avilleret]

first draft to fix #31

add some vector<vector > to and an associated getter to modelloader API to get model data
use VBO to display model
modelOBJ now return float array instead of glList

TODO : delete other OpenGL call from modelOBJ
TODO2 : modify modelASSIMP to use the new API

[umlaeute]

thanks. hopefully i i will be able to review and merge this by next week.

as for TODO2: i think you might rather spend your energy in creating a new modelASSIMP3 plugin than trying to resurrect modelASSIMP2...

[avilleret]

actually my pull request doesn't fix all the issues but only for modelOBJ plugin.
I'll try to make a modelASSIMP3 plugin when I have time.
Can I push some changes to an already merged branch ?

[umlaeute]

yes, push ahead :-)

random thoughts:

• use const std::string& rather than std::string for performance reasons.
• probably use enum rather than std::string for even more performance.
• easy way to check whether a given array (e.g. "color") exists.
• possibility to have plugin-defined stride
• probably combine the last items two with an uint getStride(const std::string&name) that returns 0 if name doesn't name a known array.

[avilleret]

ok,

I remove the string comparison (at least, by default it uses a new getVBOarray() which uses enum).
This new getter return alls VBO arrays filled by the plugin.