arthur m wrote: > Hello guys, > > I have been playing a bit with GLU library in context of 2d graphics. I > found that GLU tessellator > can be improved in regards of the interface with very little code added. > As of standard gluTessVertex > accepts only arrays of double[3] values, which is a bit annoying when > one has arrays of type float[2] > or int[2]. It is quite easy to add more flexible interface in style of: > > > GLAPI void GLAPIENTRY gluTessVertex2i (GLUtesselator* tess, GLint > *location, GLvoid* data); > > GLAPI void GLAPIENTRY gluTessVertex2f (GLUtesselator* tess, GLfloat > *location, GLvoid* data); > > GLAPI void GLAPIENTRY gluTessVertex2d (GLUtesselator* tess, GLdouble > *location,GLvoid* data); > > > > GLAPI void GLAPIENTRY gluTessVertex3i (GLUtesselator* tess, GLint > *location, GLvoid* data); > > GLAPI void GLAPIENTRY gluTessVertex3f (GLUtesselator* tess, GLfloat > *location,GLvoid* data); > > GLAPI void GLAPIENTRY gluTessVertex3d (GLUtesselator* tess, GLdouble > *location,GLvoid* data); > > > I also found by looking at the tessellation algorithm and docs, that one > can make it more effectively when working > in 2d. Originally the algorithm will project all vertices of a polygon > into same plane. When working in 2d we can skipp > this projection, since we anyway have all vertices in same plane, say Z > = 0. Furthermore it is quite easy to hack GLU > to incorporate this by simply adding new boolean property (say > GLU_TESS_DONT_PROJECT) which can be set by programmer and checked > by algorithm before projection. > > Those two addons does not break any previous functionality of GLU so one > can use new library as a drop-in repl. > > I have used mesa code for my own GLU dll and if this can be of interest > to more people than me, > I can post patches to this list or maybe entire project code somewhere > on the net.
It sounds like these two features are orthogonal. I'd suggest you write up a couple of GLU extensions using the usual OpenGL extension template. I think there's a couple GLU extensions in the OpenGL extension registry which you could use as examples. If you could then post the specs and your patches for review, that'd be great. -Brian ------------------------------------------------------------------------------ _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
