gEDA-user: pcjc2 tessellation

[Russell Shaw <rjshaw@xxxxxxxxxxxxxxx>]

On 11/09/10 07:59, Peter Clifton wrote:
> On Fri, 2010-09-10 at 14:16 -0400, Windell H. Oskay wrote:
> > > On Fri, Sep 10, 2010 at 01:31:48AM +0100, Peter Clifton wrote:
> > > > PS.. have you tried any of the GL stuff?
> > > >
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/trans_poly.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-1.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-2.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-3.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-4.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-5.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-6.png
> > > > http://www2.eng.cam.ac.uk/~pcjc2/geda/pcb+gl_3d/pcb+gl_3d-7.png
> >
> >
> > Wow. These screenshots are incredible.
>
> Thanks!
>
> > Please excuse my naive question, but is this something that the rest of us
> > can expect to see in PCB someday?
>
> Some day.. eventually. It is a slow work in progress to get the code
> clean enough to push into git HEAD. In the mean time, the branch is
> "before_pours" in this repository:
>
> git://repo.or.cz/geda-pcb/pcjc2.git
>
> I've been working slowly to get the OpenGL stuff to co-exist with a
> standard GDK build, but for the moment that isn't finished.

Hi,
From pcjc2/src/borast/borast-bentley-ottmann.c, i used some functions
to make a small test program to see how bo_contour_to_traps() works.

In bo_contour_to_traps(), i get num_events = contour->Count = 0,
so i must be missing something. Here's the test i was trying:

void
borast(void)
{
    Vector v;
    v[0] = 0;    // x
    v[1] = 0;    // y

    PLINE *contour = poly_NewContour(v);

    v[0] = 1;    // x
    v[1] = 0;    // y
    VNODE *node = poly_CreateNode(v);

    VNODE *after = &contour->head;
    poly_InclVertex(after, node);

    v[0] = 1;    // x
    v[1] = 1;    // y
    VNODE *node2 = poly_CreateNode(v);

    poly_InclVertex(node, node2);

    borast_traps_t traps;
    bo_contour_to_traps(contour, &traps);
}


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