Geomview For Windows?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[burchard: mgri weirdness, or maybe mggettransform() weirdness?]
Something peculiar occasionally happens to me in oogldemo: the edges of a polyhedral Geom are rendered as if with a different (typically degenerate) transform than the faces. The faces are drawn correctly, but the entire skin of edges has been peeled off the object, typically being collapsed into a plane (perhaps always the X-Z plane?). Has this ever been seen before? I haven't been able to reproduce this problem with the NeXT version of Geomview, even the recent compiled version Geomview12-30.app which Stuart pointed me toward. Could it be that I am calling the MG library in a sequence which is not guaranteed to be reliable? Or, more likely, could it be that mggettransform() is unreliable? (It's the one MG call I'm making that isn't used in any essential way in Geomview.) So that you can easily check my usage of MG, I've extracted an outline of all the MG calls I make: /* setup */ mgContext = mgctxcreate( MG_BACKGROUND, &backColor, MG_ZNUDGE, 3.E-5, MG_CAMERA, mgCamera, MG_APPEAR, mgAppearance, MG_WnSet, WN_XSIZE, frame.width, WN_YSIZE, frame.height, WN_END, MG_END); mgreshapeviewport(); mgctxselect(mgContext); mgworldbegin(); /* draw main geom */ GeomDraw(worldGeom); /* draw auxiliary geom */ mggettransform(T); DO_SOMETHING_WITH(T); mgpushtransform(); mgtransform(T); GeomDraw(auxGeom); mgpoptransform(); /* shut down */ mgworldend(); mgctxdelete(mgContext);
Home | Overview | FAQ | Documentation | Support | Download | Mailing List
Windows? | Development | Bug Reporting | Contributing | Contact Us | Sponsors
site hosted by