[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [51755] trunk/blender/source/blender/bmesh : code cleanup: move select-similar bmesh operators into their own file since there are 3 operators here that share
Campbell Barton
ideasman42 at gmail.com
Tue Oct 30 08:59:27 CET 2012
Revision: 51755
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=51755
Author: campbellbarton
Date: 2012-10-30 07:59:25 +0000 (Tue, 30 Oct 2012)
Log Message:
-----------
code cleanup: move select-similar bmesh operators into their own file since there are 3 operators here that share
utility functions with eachother but have nothing in common with other operators in bmo_utils.c
Modified Paths:
--------------
trunk/blender/source/blender/bmesh/CMakeLists.txt
trunk/blender/source/blender/bmesh/operators/bmo_utils.c
Added Paths:
-----------
trunk/blender/source/blender/bmesh/operators/bmo_select_similar.c
Modified: trunk/blender/source/blender/bmesh/CMakeLists.txt
===================================================================
--- trunk/blender/source/blender/bmesh/CMakeLists.txt 2012-10-30 07:29:17 UTC (rev 51754)
+++ trunk/blender/source/blender/bmesh/CMakeLists.txt 2012-10-30 07:59:25 UTC (rev 51755)
@@ -52,6 +52,7 @@
operators/bmo_mirror.c
operators/bmo_primitive.c
operators/bmo_removedoubles.c
+ operators/bmo_select_similar.c
operators/bmo_smooth_laplacian.c
operators/bmo_symmetrize.c
operators/bmo_subdivide.c
Added: trunk/blender/source/blender/bmesh/operators/bmo_select_similar.c
===================================================================
--- trunk/blender/source/blender/bmesh/operators/bmo_select_similar.c (rev 0)
+++ trunk/blender/source/blender/bmesh/operators/bmo_select_similar.c 2012-10-30 07:59:25 UTC (rev 51755)
@@ -0,0 +1,643 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Joseph Eagar, Campbell Barton
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/bmesh/operators/bmo_select_similar.c
+ * \ingroup bmesh
+ *
+ * bmesh operators to select based on
+ * comparisons with the existing selection.
+ */
+
+#include "MEM_guardedalloc.h"
+
+#include "DNA_meshdata_types.h"
+
+#include "BLI_math.h"
+
+#include "BKE_customdata.h"
+
+#include "bmesh.h"
+
+#include "intern/bmesh_operators_private.h" /* own include */
+
+/*
+ * compute the fake surface of an ngon
+ * This is done by decomposing the ngon into triangles who share the centroid of the ngon
+ * while this method is far from being exact, it should guarantee an invariance.
+ *
+ * NOTE: This should probably go to bmesh_polygon.c
+ */
+static float ngon_fake_area(BMFace *f)
+{
+ BMIter liter;
+ BMLoop *l;
+ int num_verts = 0;
+ float v[3], sv[3], c[3];
+ float area = 0.0f;
+
+ BM_face_calc_center_mean(f, c);
+
+ BM_ITER_ELEM (l, &liter, f, BM_LOOPS_OF_FACE) {
+ if (num_verts == 0) {
+ copy_v3_v3(v, l->v->co);
+ copy_v3_v3(sv, l->v->co);
+ num_verts++;
+ }
+ else {
+ area += area_tri_v3(v, c, l->v->co);
+ copy_v3_v3(v, l->v->co);
+ num_verts++;
+ }
+ }
+
+ area += area_tri_v3(v, c, sv);
+
+ return area;
+}
+
+/*
+ * extra face data (computed data)
+ */
+typedef struct SimSel_FaceExt {
+ BMFace *f; /* the face */
+ float c[3]; /* center */
+ union {
+ float area; /* area */
+ float perim; /* perimeter */
+ float d; /* 4th component of plane (the first three being the normal) */
+ struct Image *t; /* image pointer */
+ };
+} SimSel_FaceExt;
+
+static int bm_sel_similar_cmp_fl(const float delta, const float thresh, const int compare)
+{
+ switch (compare) {
+ case SIM_CMP_EQ:
+ return (fabsf(delta) <= thresh);
+ case SIM_CMP_GT:
+ return ((delta + thresh) >= 0.0f);
+ case SIM_CMP_LT:
+ return ((delta - thresh) <= 0.0f);
+ default:
+ BLI_assert(0);
+ }
+}
+
+static int bm_sel_similar_cmp_i(const int delta, const int compare)
+{
+ switch (compare) {
+ case SIM_CMP_EQ:
+ return (delta == 0);
+ case SIM_CMP_GT:
+ return (delta > 0);
+ case SIM_CMP_LT:
+ return (delta < 0);
+ default:
+ BLI_assert(0);
+ }
+}
+
+#define FACE_MARK 4
+
+/*
+ * Select similar faces, the choices are in the enum in source/blender/bmesh/bmesh_operators.h
+ * We select either similar faces based on material, image, area, perimeter, normal, or the coplanar faces
+ */
+void bmo_similar_faces_exec(BMesh *bm, BMOperator *op)
+{
+ BMIter fm_iter;
+ BMFace *fs, *fm;
+ BMOIter fs_iter;
+ int num_sels = 0, num_total = 0, i = 0, idx = 0;
+ float angle = 0.0f;
+ SimSel_FaceExt *f_ext = NULL;
+ int *indices = NULL;
+ float t_no[3]; /* temporary normal */
+ const int type = BMO_slot_int_get(op, "type");
+ const float thresh = BMO_slot_float_get(op, "thresh");
+ const float thresh_radians = thresh * (float)M_PI;
+ const int compare = BMO_slot_int_get(op, "compare");
+
+ /* initial_elem - other_elem */
+ float delta_fl;
+ int delta_i;
+
+ num_total = BM_mesh_elem_count(bm, BM_FACE);
+
+ /*
+ * The first thing to do is to iterate through all the the selected items and mark them since
+ * they will be in the selection anyway.
+ * This will increase performance, (especially when the number of originally selected faces is high)
+ * so the overall complexity will be less than $O(mn)$ where is the total number of selected faces,
+ * and n is the total number of faces
+ */
+ BMO_ITER (fs, &fs_iter, bm, op, "faces", BM_FACE) {
+ if (!BMO_elem_flag_test(bm, fs, FACE_MARK)) { /* is this really needed ? */
+ BMO_elem_flag_enable(bm, fs, FACE_MARK);
+ num_sels++;
+ }
+ }
+
+ /* allocate memory for the selected faces indices and for all temporary faces */
+ indices = (int *)MEM_callocN(sizeof(int) * num_sels, "face indices util.c");
+ f_ext = (SimSel_FaceExt *)MEM_callocN(sizeof(SimSel_FaceExt) * num_total, "f_ext util.c");
+
+ /* loop through all the faces and fill the faces/indices structure */
+ BM_ITER_MESH (fm, &fm_iter, bm, BM_FACES_OF_MESH) {
+ f_ext[i].f = fm;
+ if (BMO_elem_flag_test(bm, fm, FACE_MARK)) {
+ indices[idx] = i;
+ idx++;
+ }
+ i++;
+ }
+
+ /*
+ * Save us some computation burden: In case of perimeter/area/coplanar selection we compute
+ * only once.
+ */
+ if (type == SIMFACE_PERIMETER || type == SIMFACE_AREA || type == SIMFACE_COPLANAR || type == SIMFACE_IMAGE) {
+ for (i = 0; i < num_total; i++) {
+ switch (type) {
+ case SIMFACE_PERIMETER:
+ /* set the perimeter */
+ f_ext[i].perim = BM_face_calc_perimeter(f_ext[i].f);
+ break;
+
+ case SIMFACE_COPLANAR:
+ /* compute the center of the polygon */
+ BM_face_calc_center_mean(f_ext[i].f, f_ext[i].c);
+
+ /* normalize the polygon normal */
+ copy_v3_v3(t_no, f_ext[i].f->no);
+ normalize_v3(t_no);
+
+ /* compute the plane distance */
+ f_ext[i].d = dot_v3v3(t_no, f_ext[i].c);
+ break;
+
+ case SIMFACE_AREA:
+ f_ext[i].area = ngon_fake_area(f_ext[i].f);
+ break;
+
+ case SIMFACE_IMAGE:
+ f_ext[i].t = NULL;
+ if (CustomData_has_layer(&(bm->pdata), CD_MTEXPOLY)) {
+ MTexPoly *mtpoly = CustomData_bmesh_get(&bm->pdata, f_ext[i].f->head.data, CD_MTEXPOLY);
+ f_ext[i].t = mtpoly->tpage;
+ }
+ break;
+ }
+ }
+ }
+
+ /* now select the rest (if any) */
+ for (i = 0; i < num_total; i++) {
+ fm = f_ext[i].f;
+ if (!BMO_elem_flag_test(bm, fm, FACE_MARK) && !BM_elem_flag_test(fm, BM_ELEM_HIDDEN)) {
+ int cont = TRUE;
+ for (idx = 0; idx < num_sels && cont == TRUE; idx++) {
+ fs = f_ext[indices[idx]].f;
+ switch (type) {
+ case SIMFACE_MATERIAL:
+ if (fm->mat_nr == fs->mat_nr) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ break;
+
+ case SIMFACE_IMAGE:
+ if (f_ext[i].t == f_ext[indices[idx]].t) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ break;
+
+ case SIMFACE_NORMAL:
+ angle = angle_normalized_v3v3(fs->no, fm->no); /* if the angle between the normals -> 0 */
+ if (angle <= thresh_radians) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ break;
+
+ case SIMFACE_COPLANAR:
+ angle = angle_normalized_v3v3(fs->no, fm->no); /* angle -> 0 */
+ if (angle <= thresh_radians) { /* and dot product difference -> 0 */
+ delta_fl = f_ext[i].d - f_ext[indices[idx]].d;
+ if (bm_sel_similar_cmp_fl(delta_fl, thresh, compare)) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ }
+ break;
+
+ case SIMFACE_AREA:
+ delta_fl = f_ext[i].area - f_ext[indices[idx]].area;
+ if (bm_sel_similar_cmp_fl(delta_fl, thresh, compare)) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ break;
+
+ case SIMFACE_SIDES:
+ delta_i = fm->len - fs->len;
+ if (bm_sel_similar_cmp_i(delta_i, compare)) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ break;
+
+ case SIMFACE_PERIMETER:
+ delta_fl = f_ext[i].perim - f_ext[indices[idx]].perim;
+ if (bm_sel_similar_cmp_fl(delta_fl, thresh, compare)) {
+ BMO_elem_flag_enable(bm, fm, FACE_MARK);
+ cont = FALSE;
+ }
+ break;
+ default:
+ BLI_assert(0);
+ }
+ }
+ }
+ }
+
+ MEM_freeN(f_ext);
+ MEM_freeN(indices);
+
+ /* transfer all marked faces to the output slot */
+ BMO_slot_buffer_from_enabled_flag(bm, op, "faceout", BM_FACE, FACE_MARK);
+}
+
+/**************************************************************************** *
+ * Similar Edges
+ **************************************************************************** */
+#define EDGE_MARK 1
+
+/*
+ * extra edge information
+ */
+typedef struct SimSel_EdgeExt {
+ BMEdge *e;
+ union {
+ float dir[3];
+ float angle; /* angle between the face */
+ };
+
+ union {
+ float length; /* edge length */
+ int faces; /* faces count */
+ };
+} SimSel_EdgeExt;
+
+/*
+ * select similar edges: the choices are in the enum in source/blender/bmesh/bmesh_operators.h
+ * choices are length, direction, face, ...
+ */
+void bmo_similar_edges_exec(BMesh *bm, BMOperator *op)
+{
+ BMOIter es_iter; /* selected edges iterator */
+ BMIter e_iter; /* mesh edges iterator */
+ BMEdge *es; /* selected edge */
+ BMEdge *e; /* mesh edge */
+ int idx = 0, i = 0 /* , f = 0 */;
+ int *indices = NULL;
+ SimSel_EdgeExt *e_ext = NULL;
+ // float *angles = NULL;
+ float angle;
+
+ int num_sels = 0, num_total = 0;
+ const int type = BMO_slot_int_get(op, "type");
+ const float thresh = BMO_slot_float_get(op, "thresh");
+ const int compare = BMO_slot_int_get(op, "compare");
+
+ /* initial_elem - other_elem */
+ float delta_fl;
+ int delta_i;
+
@@ Diff output truncated at 10240 characters. @@
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