[brlcad-tracker] [ brlcad-Support Requests-2934286 ] mk_extrusion not working

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Support Requests item #2934286, was opened at 2010-01-18 14:33
Message generated for change (Settings changed) made by ocarretero
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Category: Geometry Editing
Group: None
>Status: Deleted
Resolution: None
Priority: 5
Private: No
Submitted By: Oscar (ocarretero)
Assigned to: Nobody/Anonymous (nobody)
Summary: mk_extrusion not working

Initial Comment:
Hello,
I'm triing to write an external program that uses the CSG capabilities of BRL-cad. In fact, I want to fill a db with some objects, do boolean operations with them, do the triangulation, and get the triangles. I'm beginning with some tests, and I use the db_walk_tree sample from brl-cad.
When I add a box and a sphere (or a cone, or a cilinder), it works really fine. I get the triangles and the resulting mesh object is ok. Then I try to do an extrusion from an sketch. It's a very simple sketch with 5 points. But the program seems to hang for a while and then crashes...
I've revised everything in my code and i dont see anything wrong.
Can someone tell me what i'm doing wrong? I'm missing anything?
This is the part of the code where i add the extrusion:

	int index;
	struct rt_sketch_internal *skt;
	vect_t u, V, h;
	point2d_t lpt[5];
	int i,a;

	BU_GETSTRUCT(skt, rt_sketch_internal);
	VSET( skt->u_vec, 1.0, 0.0, 0.0 );
	VSET( skt->v_vec, 0.0, 1.0, 0.0 );
	VSET( skt->V, 75.0, 75.0, 75.0 );
	skt->magic = RT_SKETCH_INTERNAL_MAGIC;
	skt->vert_count = 5;
	skt->verts = bu_calloc( skt->vert_count, sizeof(point2d_t), "2d points" );

	lpt[0][X] = 0;
	lpt[0][Y] = 0;
	lpt[1][X] = 0;
	lpt[1][Y] = 75;
	lpt[2][X] = 75;
	lpt[2][Y] = 75;
	lpt[3][X] = 75;
	lpt[3][Y] = 0;
	lpt[4][X] = 0;
	lpt[4][Y] = 0;

	for ( index=0; index < 5; index++ ) 
	{
		V2MOVE(skt->verts[index], lpt[index]);
	}

                       mk_sketch( wdbp, "skt.s", skt);
                       
                      VSET( u, 1.0, 0.0, 0.0 );
                      VSET( v, 0.0, 1.0, 0.0 );
                      VSET( V, 75.0, 75.0, 75.0 );
                      VSET( h, 0.0, 0.0, 100.0 );
                     mk_extrusion(wdbp, "extr.s", "skt.s", V, h, u, v,0);


I apologise for my bad programming skills and for my worst english...
Thanks,
Oscar 



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