Revision: 77638
http://sourceforge.net/p/brlcad/code/77638
Author: brlcad
Date: 2020-10-24 17:13:57 +0000 (Sat, 24 Oct 2020)
Log Message:
-----------
eliminate the use of intermediate variables.
Modified Paths:
--------------
brlcad/trunk/src/librt/primitives/bot/bot.c
Modified: brlcad/trunk/src/librt/primitives/bot/bot.c
===================================================================
--- brlcad/trunk/src/librt/primitives/bot/bot.c 2020-10-24 17:07:09 UTC (rev
77637)
+++ brlcad/trunk/src/librt/primitives/bot/bot.c 2020-10-24 17:13:57 UTC (rev
77638)
@@ -426,32 +426,28 @@
struct rt_bot_internal *bot_ip;
size_t vert_index;
size_t tri_index;
- point_t p1;
- size_t pt1, pt2, pt3;
RT_CK_DB_INTERNAL(ip);
bot_ip = (struct rt_bot_internal *)ip->idb_ptr;
RT_BOT_CK_MAGIC(bot_ip);
-
+
struct bu_bitv *visit_vert = bu_bitv_new(bot_ip->num_vertices);
VSETALL((*min), INFINITY);
VSETALL((*max), -INFINITY);
- /* iterate through all faces of the BoT and mark vertices that are being
reached in the bit-vector */
+ /* First Pass: coherently iterate through all faces of the BoT and
+ * mark vertices in a bit-vector that are referenced by a face.
+ */
for (tri_index = 0; tri_index < bot_ip->num_faces; tri_index++) {
- pt1 = bot_ip->faces[tri_index*3];
- pt2 = bot_ip->faces[tri_index*3 + 1];
- pt3 = bot_ip->faces[tri_index*3 + 2];
- BU_BITSET(visit_vert,pt1);
- BU_BITSET(visit_vert,pt2);
- BU_BITSET(visit_vert,pt3);
+ BU_BITSET(visit_vert, bot_ip->faces[tri_index*3 + X]);
+ BU_BITSET(visit_vert, bot_ip->faces[tri_index*3 + Y]);
+ BU_BITSET(visit_vert, bot_ip->faces[tri_index*3 + Z]);
}
- /* Check max and min of vertices marked */
+ /* Second Pass: check max and min of vertices marked */
for(vert_index = 0; vert_index < bot_ip->num_vertices; vert_index++){
if(BU_BITTEST(visit_vert,vert_index)){
- VMOVE(p1, &bot_ip->vertices[vert_index*3]);
- VMINMAX((*min), (*max), p1);
+ VMINMAX((*min), (*max), &bot_ip->vertices[vert_index*3]);
}
}
bu_bitv_free(visit_vert);
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