Revision: 75776
http://sourceforge.net/p/brlcad/code/75776
Author: starseeker
Date: 2020-05-12 20:11:45 +0000 (Tue, 12 May 2020)
Log Message:
-----------
Make a stab at checking the face_mode bits
Modified Paths:
--------------
brlcad/trunk/src/libged/bot/extrude.cpp
Modified: brlcad/trunk/src/libged/bot/extrude.cpp
===================================================================
--- brlcad/trunk/src/libged/bot/extrude.cpp 2020-05-12 19:37:15 UTC (rev
75775)
+++ brlcad/trunk/src/libged/bot/extrude.cpp 2020-05-12 20:11:45 UTC (rev
75776)
@@ -142,8 +142,11 @@
// For each face, define an arb6 using shifted vertices. For each face
// vertex two new points will be constructed - an inner and outer - based
// on the original point, the local face thickness, and the avg face dir
- // and its inverse. Check the face_mode flag to know which points to shift
- // in which direction.
+ // and its inverse. Check the face_mode flag to know how far to shift in
+ // each direction - if the faces aren't centered which way the thickness is
+ // applied depends on the incoming ray direction. Here, that is
+ // interpreted as both directions of ARB6 extrusion getting the full length
+ // from the surface.
struct bu_vls prim_name = BU_VLS_INIT_ZERO;
for (size_t i = 0; i < bot->num_faces; i++) {
point_t pnts[6];
@@ -154,8 +157,14 @@
for (int j = 0; j < 3; j++) {
VMOVE(pf[j], &bot->vertices[bot->faces[i*3+j]*3]);
- VSCALE(pv1[j], n, bot->thickness[i]);
- VSCALE(pv2[j], n, -1*bot->thickness[i]);
+ if (BU_BITTEST(bot->face_mode, i)) {
+ VSCALE(pv1[j], n, bot->thickness[i]);
+ VSCALE(pv2[j], n, -1*bot->thickness[i]);
+ } else {
+ /* Note - g_include_bot.c uses .51 */
+ VSCALE(pv1[j], n, 0.51*bot->thickness[i]);
+ VSCALE(pv2[j], n, -0.51*bot->thickness[i]);
+ }
}
for (int j = 0; j < 3; j++) {
point_t npnt1;
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