Added image overlays, these are offset and scaled photos drawn on top of the part model to help getting part data from pictures.

Fixed coordconv3_2 algorithm, plane drawing works on any of the fixed cameras now.

Added wireframe mode

Split inverting into methods into LDObject and its subclasses, fixed a rather severe memory leak issue (GL display lists weren't being removed properly)

Readded BFC red-green view, although determining inversion isn't always correct and it cannot handle CW-certified files...

Added tool for replacing coordinate values

Rewrote the string class with a simpler version. The old one was more than probably leaking water like a boat with an elephant on board...

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mercurial