1697 lines
55 KiB
C
1697 lines
55 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup bke
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*/
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#include <assert.h>
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "BLI_linklist.h"
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#include "BLI_math.h"
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#include "BLI_threads.h"
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#include "BLI_utildefines.h"
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#include "BKE_bvhutils.h"
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#include "BKE_editmesh.h"
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#include "BKE_mesh.h"
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#include "BKE_mesh_runtime.h"
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#include "MEM_guardedalloc.h"
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static ThreadRWMutex cache_rwlock = BLI_RWLOCK_INITIALIZER;
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/* -------------------------------------------------------------------- */
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/** \name Local Callbacks
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* \{ */
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/* Math stuff for ray casting on mesh faces and for nearest surface */
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float bvhtree_ray_tri_intersection(const BVHTreeRay *ray,
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const float UNUSED(m_dist),
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const float v0[3],
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const float v1[3],
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const float v2[3])
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{
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float dist;
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#ifdef USE_KDOPBVH_WATERTIGHT
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if (isect_ray_tri_watertight_v3(ray->origin, ray->isect_precalc, v0, v1, v2, &dist, NULL))
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#else
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if (isect_ray_tri_epsilon_v3(ray->origin, ray->direction, v0, v1, v2, &dist, NULL, FLT_EPSILON))
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#endif
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{
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return dist;
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}
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return FLT_MAX;
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}
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float bvhtree_sphereray_tri_intersection(const BVHTreeRay *ray,
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float radius,
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const float m_dist,
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const float v0[3],
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const float v1[3],
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const float v2[3])
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{
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float idist;
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float p1[3];
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float hit_point[3];
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madd_v3_v3v3fl(p1, ray->origin, ray->direction, m_dist);
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if (isect_sweeping_sphere_tri_v3(ray->origin, p1, radius, v0, v1, v2, &idist, hit_point)) {
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return idist * m_dist;
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}
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return FLT_MAX;
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}
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/*
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* BVH from meshes callbacks
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*/
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/* Callback to bvh tree nearest point. The tree must have been built using bvhtree_from_mesh_faces.
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* userdata must be a BVHMeshCallbackUserdata built from the same mesh as the tree. */
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static void mesh_faces_nearest_point(void *userdata,
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int index,
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const float co[3],
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BVHTreeNearest *nearest)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const MVert *vert = data->vert;
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const MFace *face = data->face + index;
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const float *t0, *t1, *t2, *t3;
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t0 = vert[face->v1].co;
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t1 = vert[face->v2].co;
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t2 = vert[face->v3].co;
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t3 = face->v4 ? vert[face->v4].co : NULL;
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do {
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float nearest_tmp[3], dist_sq;
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closest_on_tri_to_point_v3(nearest_tmp, co, t0, t1, t2);
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dist_sq = len_squared_v3v3(co, nearest_tmp);
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if (dist_sq < nearest->dist_sq) {
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nearest->index = index;
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nearest->dist_sq = dist_sq;
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copy_v3_v3(nearest->co, nearest_tmp);
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normal_tri_v3(nearest->no, t0, t1, t2);
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}
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t1 = t2;
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t2 = t3;
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t3 = NULL;
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} while (t2);
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}
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/* copy of function above */
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static void mesh_looptri_nearest_point(void *userdata,
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int index,
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const float co[3],
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BVHTreeNearest *nearest)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const MVert *vert = data->vert;
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const MLoopTri *lt = &data->looptri[index];
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const float *vtri_co[3] = {
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vert[data->loop[lt->tri[0]].v].co,
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vert[data->loop[lt->tri[1]].v].co,
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vert[data->loop[lt->tri[2]].v].co,
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};
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float nearest_tmp[3], dist_sq;
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closest_on_tri_to_point_v3(nearest_tmp, co, UNPACK3(vtri_co));
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dist_sq = len_squared_v3v3(co, nearest_tmp);
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if (dist_sq < nearest->dist_sq) {
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nearest->index = index;
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nearest->dist_sq = dist_sq;
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copy_v3_v3(nearest->co, nearest_tmp);
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normal_tri_v3(nearest->no, UNPACK3(vtri_co));
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}
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}
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/* copy of function above (warning, should de-duplicate with editmesh_bvh.c) */
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static void editmesh_looptri_nearest_point(void *userdata,
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int index,
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const float co[3],
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BVHTreeNearest *nearest)
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{
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const BVHTreeFromEditMesh *data = userdata;
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BMEditMesh *em = data->em;
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const BMLoop **ltri = (const BMLoop **)em->looptris[index];
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const float *t0, *t1, *t2;
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t0 = ltri[0]->v->co;
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t1 = ltri[1]->v->co;
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t2 = ltri[2]->v->co;
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{
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float nearest_tmp[3], dist_sq;
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closest_on_tri_to_point_v3(nearest_tmp, co, t0, t1, t2);
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dist_sq = len_squared_v3v3(co, nearest_tmp);
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if (dist_sq < nearest->dist_sq) {
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nearest->index = index;
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nearest->dist_sq = dist_sq;
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copy_v3_v3(nearest->co, nearest_tmp);
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normal_tri_v3(nearest->no, t0, t1, t2);
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}
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}
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}
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/* Callback to bvh tree raycast. The tree must have been built using bvhtree_from_mesh_faces.
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* userdata must be a BVHMeshCallbackUserdata built from the same mesh as the tree. */
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static void mesh_faces_spherecast(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const MVert *vert = data->vert;
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const MFace *face = &data->face[index];
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const float *t0, *t1, *t2, *t3;
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t0 = vert[face->v1].co;
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t1 = vert[face->v2].co;
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t2 = vert[face->v3].co;
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t3 = face->v4 ? vert[face->v4].co : NULL;
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do {
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float dist;
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if (ray->radius == 0.0f) {
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dist = bvhtree_ray_tri_intersection(ray, hit->dist, t0, t1, t2);
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}
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else {
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dist = bvhtree_sphereray_tri_intersection(ray, ray->radius, hit->dist, t0, t1, t2);
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}
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if (dist >= 0 && dist < hit->dist) {
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hit->index = index;
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hit->dist = dist;
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madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist);
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normal_tri_v3(hit->no, t0, t1, t2);
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}
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t1 = t2;
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t2 = t3;
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t3 = NULL;
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} while (t2);
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}
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/* copy of function above */
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static void mesh_looptri_spherecast(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const MVert *vert = data->vert;
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const MLoopTri *lt = &data->looptri[index];
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const float *vtri_co[3] = {
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vert[data->loop[lt->tri[0]].v].co,
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vert[data->loop[lt->tri[1]].v].co,
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vert[data->loop[lt->tri[2]].v].co,
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};
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float dist;
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if (ray->radius == 0.0f) {
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dist = bvhtree_ray_tri_intersection(ray, hit->dist, UNPACK3(vtri_co));
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}
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else {
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dist = bvhtree_sphereray_tri_intersection(ray, ray->radius, hit->dist, UNPACK3(vtri_co));
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}
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if (dist >= 0 && dist < hit->dist) {
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hit->index = index;
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hit->dist = dist;
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madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist);
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normal_tri_v3(hit->no, UNPACK3(vtri_co));
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}
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}
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/* copy of function above (warning, should de-duplicate with editmesh_bvh.c) */
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static void editmesh_looptri_spherecast(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const BVHTreeFromEditMesh *data = (BVHTreeFromEditMesh *)userdata;
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BMEditMesh *em = data->em;
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const BMLoop **ltri = (const BMLoop **)em->looptris[index];
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const float *t0, *t1, *t2;
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t0 = ltri[0]->v->co;
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t1 = ltri[1]->v->co;
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t2 = ltri[2]->v->co;
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{
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float dist;
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if (ray->radius == 0.0f) {
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dist = bvhtree_ray_tri_intersection(ray, hit->dist, t0, t1, t2);
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}
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else {
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dist = bvhtree_sphereray_tri_intersection(ray, ray->radius, hit->dist, t0, t1, t2);
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}
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if (dist >= 0 && dist < hit->dist) {
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hit->index = index;
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hit->dist = dist;
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madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist);
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normal_tri_v3(hit->no, t0, t1, t2);
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}
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}
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}
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/* Callback to bvh tree nearest point. The tree must have been built using bvhtree_from_mesh_edges.
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* userdata must be a BVHMeshCallbackUserdata built from the same mesh as the tree. */
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static void mesh_edges_nearest_point(void *userdata,
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int index,
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const float co[3],
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BVHTreeNearest *nearest)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const MVert *vert = data->vert;
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const MEdge *edge = data->edge + index;
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float nearest_tmp[3], dist_sq;
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const float *t0, *t1;
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t0 = vert[edge->v1].co;
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t1 = vert[edge->v2].co;
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closest_to_line_segment_v3(nearest_tmp, co, t0, t1);
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dist_sq = len_squared_v3v3(nearest_tmp, co);
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if (dist_sq < nearest->dist_sq) {
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nearest->index = index;
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nearest->dist_sq = dist_sq;
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copy_v3_v3(nearest->co, nearest_tmp);
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sub_v3_v3v3(nearest->no, t0, t1);
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normalize_v3(nearest->no);
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}
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}
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/* Helper, does all the point-spherecast work actually. */
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static void mesh_verts_spherecast_do(int index,
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const float v[3],
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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float dist;
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const float *r1;
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float r2[3], i1[3];
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r1 = ray->origin;
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add_v3_v3v3(r2, r1, ray->direction);
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closest_to_line_segment_v3(i1, v, r1, r2);
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/* No hit if closest point is 'behind' the origin of the ray, or too far away from it. */
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if ((dot_v3v3v3(r1, i1, r2) >= 0.0f) && ((dist = len_v3v3(r1, i1)) < hit->dist)) {
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hit->index = index;
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hit->dist = dist;
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copy_v3_v3(hit->co, i1);
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}
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}
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static void editmesh_verts_spherecast(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const BVHTreeFromEditMesh *data = userdata;
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BMVert *eve = BM_vert_at_index(data->em->bm, index);
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mesh_verts_spherecast_do(index, eve->co, ray, hit);
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}
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/* Callback to bvh tree raycast. The tree must have been built using bvhtree_from_mesh_verts.
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* userdata must be a BVHMeshCallbackUserdata built from the same mesh as the tree. */
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static void mesh_verts_spherecast(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const float *v = data->vert[index].co;
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mesh_verts_spherecast_do(index, v, ray, hit);
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}
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/* Callback to bvh tree raycast. The tree must have been built using bvhtree_from_mesh_edges.
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* userdata must be a BVHMeshCallbackUserdata built from the same mesh as the tree. */
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static void mesh_edges_spherecast(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata;
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const MVert *vert = data->vert;
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const MEdge *edge = &data->edge[index];
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const float radius_sq = square_f(ray->radius);
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float dist;
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const float *v1, *v2, *r1;
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float r2[3], i1[3], i2[3];
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v1 = vert[edge->v1].co;
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v2 = vert[edge->v2].co;
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/* In case we get a zero-length edge, handle it as a point! */
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if (equals_v3v3(v1, v2)) {
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mesh_verts_spherecast_do(index, v1, ray, hit);
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return;
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}
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r1 = ray->origin;
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add_v3_v3v3(r2, r1, ray->direction);
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if (isect_line_line_v3(v1, v2, r1, r2, i1, i2)) {
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/* No hit if intersection point is 'behind' the origin of the ray, or too far away from it. */
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if ((dot_v3v3v3(r1, i2, r2) >= 0.0f) && ((dist = len_v3v3(r1, i2)) < hit->dist)) {
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const float e_fac = line_point_factor_v3(i1, v1, v2);
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if (e_fac < 0.0f) {
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copy_v3_v3(i1, v1);
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}
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else if (e_fac > 1.0f) {
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copy_v3_v3(i1, v2);
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}
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/* Ensure ray is really close enough from edge! */
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if (len_squared_v3v3(i1, i2) <= radius_sq) {
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hit->index = index;
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hit->dist = dist;
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copy_v3_v3(hit->co, i2);
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}
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}
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}
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}
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/** \} */
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/*
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* BVH builders
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*/
|
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/* -------------------------------------------------------------------- */
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/** \name Vertex Builder
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* \{ */
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static BVHTree *bvhtree_from_editmesh_verts_create_tree(float epsilon,
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int tree_type,
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int axis,
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BMEditMesh *em,
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const BLI_bitmap *verts_mask,
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int verts_num_active)
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{
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BM_mesh_elem_table_ensure(em->bm, BM_VERT);
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const int verts_num = em->bm->totvert;
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if (verts_mask) {
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BLI_assert(IN_RANGE_INCL(verts_num_active, 0, verts_num));
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}
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else {
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verts_num_active = verts_num;
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}
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BVHTree *tree = BLI_bvhtree_new(verts_num_active, epsilon, tree_type, axis);
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if (tree) {
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for (int i = 0; i < verts_num; i++) {
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if (verts_mask && !BLI_BITMAP_TEST_BOOL(verts_mask, i)) {
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continue;
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}
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BMVert *eve = BM_vert_at_index(em->bm, i);
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BLI_bvhtree_insert(tree, i, eve->co, 1);
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}
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BLI_assert(BLI_bvhtree_get_len(tree) == verts_num_active);
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BLI_bvhtree_balance(tree);
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}
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return tree;
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}
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|
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static BVHTree *bvhtree_from_mesh_verts_create_tree(float epsilon,
|
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int tree_type,
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int axis,
|
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const MVert *vert,
|
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const int verts_num,
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const BLI_bitmap *verts_mask,
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int verts_num_active)
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{
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BVHTree *tree = NULL;
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|
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if (verts_mask) {
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BLI_assert(IN_RANGE_INCL(verts_num_active, 0, verts_num));
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}
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else {
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verts_num_active = verts_num;
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}
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|
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if (verts_num_active) {
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tree = BLI_bvhtree_new(verts_num_active, epsilon, tree_type, axis);
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|
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if (tree) {
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for (int i = 0; i < verts_num; i++) {
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if (verts_mask && !BLI_BITMAP_TEST_BOOL(verts_mask, i)) {
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continue;
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}
|
|
BLI_bvhtree_insert(tree, i, vert[i].co, 1);
|
|
}
|
|
BLI_assert(BLI_bvhtree_get_len(tree) == verts_num_active);
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
static void bvhtree_from_mesh_verts_setup_data(BVHTreeFromMesh *data,
|
|
BVHTree *tree,
|
|
const bool is_cached,
|
|
const MVert *vert,
|
|
const bool vert_allocated)
|
|
{
|
|
memset(data, 0, sizeof(*data));
|
|
|
|
data->tree = tree;
|
|
data->cached = is_cached;
|
|
|
|
/* a NULL nearest callback works fine
|
|
* remember the min distance to point is the same as the min distance to BV of point */
|
|
data->nearest_callback = NULL;
|
|
data->raycast_callback = mesh_verts_spherecast;
|
|
|
|
data->vert = vert;
|
|
data->vert_allocated = vert_allocated;
|
|
}
|
|
|
|
/* Builds a bvh tree where nodes are the vertices of the given em */
|
|
BVHTree *bvhtree_from_editmesh_verts_ex(BVHTreeFromEditMesh *data,
|
|
BMEditMesh *em,
|
|
const BLI_bitmap *verts_mask,
|
|
int verts_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
data->cached = bvhcache_find(*bvh_cache, bvh_cache_type, &data->tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
|
|
if (data->cached == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
data->cached = bvhcache_find(*bvh_cache, bvh_cache_type, &data->tree);
|
|
if (data->cached == false) {
|
|
tree = bvhtree_from_editmesh_verts_create_tree(
|
|
epsilon, tree_type, axis, em, verts_mask, verts_num_active);
|
|
|
|
/* Save on cache for later use */
|
|
/* printf("BVHTree built and saved on cache\n"); */
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
data->cached = true;
|
|
}
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
else {
|
|
tree = bvhtree_from_editmesh_verts_create_tree(
|
|
epsilon, tree_type, axis, em, verts_mask, verts_num_active);
|
|
}
|
|
|
|
if (tree) {
|
|
memset(data, 0, sizeof(*data));
|
|
data->tree = tree;
|
|
data->em = em;
|
|
data->nearest_callback = NULL;
|
|
data->raycast_callback = editmesh_verts_spherecast;
|
|
data->cached = bvh_cache != NULL;
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
BVHTree *bvhtree_from_editmesh_verts(
|
|
BVHTreeFromEditMesh *data, BMEditMesh *em, float epsilon, int tree_type, int axis)
|
|
{
|
|
return bvhtree_from_editmesh_verts_ex(data, em, NULL, -1, epsilon, tree_type, axis, 0, NULL);
|
|
}
|
|
|
|
/**
|
|
* Builds a bvh tree where nodes are the given vertices (note: does not copy given mverts!).
|
|
* \param vert_allocated: if true, vert freeing will be done when freeing data.
|
|
* \param verts_mask: if not null, true elements give which vert to add to BVH tree.
|
|
* \param verts_num_active: if >= 0, number of active verts to add to BVH tree
|
|
* (else will be computed from mask).
|
|
*/
|
|
BVHTree *bvhtree_from_mesh_verts_ex(BVHTreeFromMesh *data,
|
|
const MVert *vert,
|
|
const int verts_num,
|
|
const bool vert_allocated,
|
|
const BLI_bitmap *verts_mask,
|
|
int verts_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
bool in_cache = false;
|
|
BVHTree *tree = NULL;
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
if (in_cache == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
if (in_cache) {
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (in_cache == false) {
|
|
tree = bvhtree_from_mesh_verts_create_tree(
|
|
epsilon, tree_type, axis, vert, verts_num, verts_mask, verts_num_active);
|
|
|
|
if (bvh_cache) {
|
|
/* Save on cache for later use */
|
|
/* printf("BVHTree built and saved on cache\n"); */
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
in_cache = true;
|
|
}
|
|
}
|
|
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_verts_setup_data(data, tree, in_cache, vert, vert_allocated);
|
|
|
|
return tree;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Edge Builder
|
|
* \{ */
|
|
|
|
static BVHTree *bvhtree_from_editmesh_edges_create_tree(float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
BMEditMesh *em,
|
|
const BLI_bitmap *edges_mask,
|
|
int edges_num_active)
|
|
{
|
|
BM_mesh_elem_table_ensure(em->bm, BM_EDGE);
|
|
const int edges_num = em->bm->totedge;
|
|
|
|
if (edges_mask) {
|
|
BLI_assert(IN_RANGE_INCL(edges_num_active, 0, edges_num));
|
|
}
|
|
else {
|
|
edges_num_active = edges_num;
|
|
}
|
|
|
|
BVHTree *tree = BLI_bvhtree_new(edges_num_active, epsilon, tree_type, axis);
|
|
|
|
if (tree) {
|
|
int i;
|
|
BMIter iter;
|
|
BMEdge *eed;
|
|
BM_ITER_MESH_INDEX (eed, &iter, em->bm, BM_EDGES_OF_MESH, i) {
|
|
if (edges_mask && !BLI_BITMAP_TEST_BOOL(edges_mask, i)) {
|
|
continue;
|
|
}
|
|
float co[2][3];
|
|
copy_v3_v3(co[0], eed->v1->co);
|
|
copy_v3_v3(co[1], eed->v2->co);
|
|
|
|
BLI_bvhtree_insert(tree, i, co[0], 2);
|
|
}
|
|
BLI_assert(BLI_bvhtree_get_len(tree) == edges_num_active);
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
static BVHTree *bvhtree_from_mesh_edges_create_tree(const MVert *vert,
|
|
const MEdge *edge,
|
|
const int edge_num,
|
|
const BLI_bitmap *edges_mask,
|
|
int edges_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
|
|
if (edges_mask) {
|
|
BLI_assert(IN_RANGE_INCL(edges_num_active, 0, edge_num));
|
|
}
|
|
else {
|
|
edges_num_active = edge_num;
|
|
}
|
|
|
|
if (edges_num_active) {
|
|
/* Create a bvh-tree of the given target */
|
|
tree = BLI_bvhtree_new(edges_num_active, epsilon, tree_type, axis);
|
|
if (tree) {
|
|
for (int i = 0; i < edge_num; i++) {
|
|
if (edges_mask && !BLI_BITMAP_TEST_BOOL(edges_mask, i)) {
|
|
continue;
|
|
}
|
|
float co[2][3];
|
|
copy_v3_v3(co[0], vert[edge[i].v1].co);
|
|
copy_v3_v3(co[1], vert[edge[i].v2].co);
|
|
|
|
BLI_bvhtree_insert(tree, i, co[0], 2);
|
|
}
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
static void bvhtree_from_mesh_edges_setup_data(BVHTreeFromMesh *data,
|
|
BVHTree *tree,
|
|
const bool is_cached,
|
|
const MVert *vert,
|
|
const bool vert_allocated,
|
|
const MEdge *edge,
|
|
const bool edge_allocated)
|
|
{
|
|
memset(data, 0, sizeof(*data));
|
|
|
|
data->tree = tree;
|
|
|
|
data->cached = is_cached;
|
|
|
|
data->nearest_callback = mesh_edges_nearest_point;
|
|
data->raycast_callback = mesh_edges_spherecast;
|
|
|
|
data->vert = vert;
|
|
data->vert_allocated = vert_allocated;
|
|
data->edge = edge;
|
|
data->edge_allocated = edge_allocated;
|
|
}
|
|
|
|
/* Builds a bvh tree where nodes are the edges of the given em */
|
|
BVHTree *bvhtree_from_editmesh_edges_ex(BVHTreeFromEditMesh *data,
|
|
BMEditMesh *em,
|
|
const BLI_bitmap *edges_mask,
|
|
int edges_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
data->cached = bvhcache_find(*bvh_cache, bvh_cache_type, &data->tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
|
|
if (data->cached == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
data->cached = bvhcache_find(*bvh_cache, bvh_cache_type, &data->tree);
|
|
if (data->cached == false) {
|
|
tree = bvhtree_from_editmesh_edges_create_tree(
|
|
epsilon, tree_type, axis, em, edges_mask, edges_num_active);
|
|
|
|
/* Save on cache for later use */
|
|
/* printf("BVHTree built and saved on cache\n"); */
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
data->cached = true;
|
|
}
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
else {
|
|
tree = bvhtree_from_editmesh_edges_create_tree(
|
|
epsilon, tree_type, axis, em, edges_mask, edges_num_active);
|
|
}
|
|
|
|
if (tree) {
|
|
memset(data, 0, sizeof(*data));
|
|
data->tree = tree;
|
|
data->em = em;
|
|
data->nearest_callback = NULL; /* TODO */
|
|
data->raycast_callback = NULL; /* TODO */
|
|
data->cached = bvh_cache != NULL;
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
BVHTree *bvhtree_from_editmesh_edges(
|
|
BVHTreeFromEditMesh *data, BMEditMesh *em, float epsilon, int tree_type, int axis)
|
|
{
|
|
return bvhtree_from_editmesh_edges_ex(data, em, NULL, -1, epsilon, tree_type, axis, 0, NULL);
|
|
}
|
|
|
|
/**
|
|
* Builds a bvh tree where nodes are the given edges .
|
|
* \param vert, vert_allocated: if true, elem freeing will be done when freeing data.
|
|
* \param edge, edge_allocated: if true, elem freeing will be done when freeing data.
|
|
* \param edges_mask: if not null, true elements give which vert to add to BVH tree.
|
|
* \param edges_num_active: if >= 0, number of active edges to add to BVH tree
|
|
* (else will be computed from mask).
|
|
*/
|
|
BVHTree *bvhtree_from_mesh_edges_ex(BVHTreeFromMesh *data,
|
|
const MVert *vert,
|
|
const bool vert_allocated,
|
|
const MEdge *edge,
|
|
const int edges_num,
|
|
const bool edge_allocated,
|
|
const BLI_bitmap *edges_mask,
|
|
int edges_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
bool in_cache = false;
|
|
BVHTree *tree = NULL;
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
if (in_cache == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
if (in_cache) {
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (in_cache == false) {
|
|
tree = bvhtree_from_mesh_edges_create_tree(
|
|
vert, edge, edges_num, edges_mask, edges_num_active, epsilon, tree_type, axis);
|
|
|
|
if (bvh_cache) {
|
|
/* Save on cache for later use */
|
|
/* printf("BVHTree built and saved on cache\n"); */
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
in_cache = true;
|
|
}
|
|
}
|
|
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_edges_setup_data(
|
|
data, tree, in_cache, vert, vert_allocated, edge, edge_allocated);
|
|
|
|
return tree;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Tessellated Face Builder
|
|
* \{ */
|
|
|
|
static BVHTree *bvhtree_from_mesh_faces_create_tree(float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const MVert *vert,
|
|
const MFace *face,
|
|
const int faces_num,
|
|
const BLI_bitmap *faces_mask,
|
|
int faces_num_active)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
int i;
|
|
|
|
if (faces_num) {
|
|
if (faces_mask) {
|
|
BLI_assert(IN_RANGE_INCL(faces_num_active, 0, faces_num));
|
|
}
|
|
else {
|
|
faces_num_active = faces_num;
|
|
}
|
|
|
|
/* Create a bvh-tree of the given target */
|
|
/* printf("%s: building BVH, total=%d\n", __func__, numFaces); */
|
|
tree = BLI_bvhtree_new(faces_num_active, epsilon, tree_type, axis);
|
|
if (tree) {
|
|
if (vert && face) {
|
|
for (i = 0; i < faces_num; i++) {
|
|
float co[4][3];
|
|
if (faces_mask && !BLI_BITMAP_TEST_BOOL(faces_mask, i)) {
|
|
continue;
|
|
}
|
|
|
|
copy_v3_v3(co[0], vert[face[i].v1].co);
|
|
copy_v3_v3(co[1], vert[face[i].v2].co);
|
|
copy_v3_v3(co[2], vert[face[i].v3].co);
|
|
if (face[i].v4) {
|
|
copy_v3_v3(co[3], vert[face[i].v4].co);
|
|
}
|
|
|
|
BLI_bvhtree_insert(tree, i, co[0], face[i].v4 ? 4 : 3);
|
|
}
|
|
}
|
|
BLI_assert(BLI_bvhtree_get_len(tree) == faces_num_active);
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
static void bvhtree_from_mesh_faces_setup_data(BVHTreeFromMesh *data,
|
|
BVHTree *tree,
|
|
const bool is_cached,
|
|
const MVert *vert,
|
|
const bool vert_allocated,
|
|
const MFace *face,
|
|
const bool face_allocated)
|
|
{
|
|
memset(data, 0, sizeof(*data));
|
|
|
|
data->tree = tree;
|
|
data->cached = is_cached;
|
|
|
|
data->nearest_callback = mesh_faces_nearest_point;
|
|
data->raycast_callback = mesh_faces_spherecast;
|
|
|
|
data->vert = vert;
|
|
data->vert_allocated = vert_allocated;
|
|
data->face = face;
|
|
data->face_allocated = face_allocated;
|
|
}
|
|
|
|
/**
|
|
* Builds a bvh tree where nodes are the given tessellated faces
|
|
* (note: does not copy given mfaces!).
|
|
* \param vert_allocated: if true, vert freeing will be done when freeing data.
|
|
* \param face_allocated: if true, face freeing will be done when freeing data.
|
|
* \param faces_mask: if not null, true elements give which faces to add to BVH tree.
|
|
* \param faces_num_active: if >= 0, number of active faces to add to BVH tree
|
|
* (else will be computed from mask).
|
|
*/
|
|
BVHTree *bvhtree_from_mesh_faces_ex(BVHTreeFromMesh *data,
|
|
const MVert *vert,
|
|
const bool vert_allocated,
|
|
const MFace *face,
|
|
const int numFaces,
|
|
const bool face_allocated,
|
|
const BLI_bitmap *faces_mask,
|
|
int faces_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
bool in_cache = false;
|
|
BVHTree *tree = NULL;
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
if (in_cache == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
if (in_cache) {
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (in_cache == false) {
|
|
tree = bvhtree_from_mesh_faces_create_tree(
|
|
epsilon, tree_type, axis, vert, face, numFaces, faces_mask, faces_num_active);
|
|
|
|
if (bvh_cache) {
|
|
/* Save on cache for later use */
|
|
/* printf("BVHTree built and saved on cache\n"); */
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
in_cache = true;
|
|
}
|
|
}
|
|
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_faces_setup_data(
|
|
data, tree, in_cache, vert, vert_allocated, face, face_allocated);
|
|
|
|
return tree;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name LoopTri Face Builder
|
|
* \{ */
|
|
|
|
static BVHTree *bvhtree_from_editmesh_looptri_create_tree(float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
BMEditMesh *em,
|
|
const BLI_bitmap *looptri_mask,
|
|
int looptri_num_active)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
const int looptri_num = em->tottri;
|
|
|
|
if (looptri_num) {
|
|
if (looptri_mask) {
|
|
BLI_assert(IN_RANGE_INCL(looptri_num_active, 0, looptri_num));
|
|
}
|
|
else {
|
|
looptri_num_active = looptri_num;
|
|
}
|
|
|
|
/* Create a bvh-tree of the given target */
|
|
/* printf("%s: building BVH, total=%d\n", __func__, numFaces); */
|
|
tree = BLI_bvhtree_new(looptri_num_active, epsilon, tree_type, axis);
|
|
if (tree) {
|
|
const struct BMLoop *(*looptris)[3] = (void *)em->looptris;
|
|
|
|
/* Insert BMesh-tessellation triangles into the bvh tree, unless they are hidden
|
|
* and/or selected. Even if the faces themselves are not selected for the snapped
|
|
* transform, having a vertex selected means the face (and thus it's tessellated
|
|
* triangles) will be moving and will not be a good snap targets. */
|
|
for (int i = 0; i < looptri_num; i++) {
|
|
const BMLoop **ltri = looptris[i];
|
|
bool insert = looptri_mask ? BLI_BITMAP_TEST_BOOL(looptri_mask, i) : true;
|
|
|
|
if (insert) {
|
|
/* No reason found to block hit-testing the triangle for snap, so insert it now.*/
|
|
float co[3][3];
|
|
copy_v3_v3(co[0], ltri[0]->v->co);
|
|
copy_v3_v3(co[1], ltri[1]->v->co);
|
|
copy_v3_v3(co[2], ltri[2]->v->co);
|
|
|
|
BLI_bvhtree_insert(tree, i, co[0], 3);
|
|
}
|
|
}
|
|
BLI_assert(BLI_bvhtree_get_len(tree) == looptri_num_active);
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
static BVHTree *bvhtree_from_mesh_looptri_create_tree(float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const MVert *vert,
|
|
const MLoop *mloop,
|
|
const MLoopTri *looptri,
|
|
const int looptri_num,
|
|
const BLI_bitmap *looptri_mask,
|
|
int looptri_num_active)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
|
|
if (looptri_mask) {
|
|
BLI_assert(IN_RANGE_INCL(looptri_num_active, 0, looptri_num));
|
|
}
|
|
else {
|
|
looptri_num_active = looptri_num;
|
|
}
|
|
|
|
if (looptri_num_active) {
|
|
/* Create a bvh-tree of the given target */
|
|
/* printf("%s: building BVH, total=%d\n", __func__, numFaces); */
|
|
tree = BLI_bvhtree_new(looptri_num_active, epsilon, tree_type, axis);
|
|
if (tree) {
|
|
if (vert && looptri) {
|
|
for (int i = 0; i < looptri_num; i++) {
|
|
float co[3][3];
|
|
if (looptri_mask && !BLI_BITMAP_TEST_BOOL(looptri_mask, i)) {
|
|
continue;
|
|
}
|
|
|
|
copy_v3_v3(co[0], vert[mloop[looptri[i].tri[0]].v].co);
|
|
copy_v3_v3(co[1], vert[mloop[looptri[i].tri[1]].v].co);
|
|
copy_v3_v3(co[2], vert[mloop[looptri[i].tri[2]].v].co);
|
|
|
|
BLI_bvhtree_insert(tree, i, co[0], 3);
|
|
}
|
|
}
|
|
BLI_assert(BLI_bvhtree_get_len(tree) == looptri_num_active);
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
static void bvhtree_from_mesh_looptri_setup_data(BVHTreeFromMesh *data,
|
|
BVHTree *tree,
|
|
const bool is_cached,
|
|
const MVert *vert,
|
|
const bool vert_allocated,
|
|
const MLoop *mloop,
|
|
const bool loop_allocated,
|
|
const MLoopTri *looptri,
|
|
const bool looptri_allocated)
|
|
{
|
|
memset(data, 0, sizeof(*data));
|
|
|
|
data->tree = tree;
|
|
data->cached = is_cached;
|
|
|
|
data->nearest_callback = mesh_looptri_nearest_point;
|
|
data->raycast_callback = mesh_looptri_spherecast;
|
|
|
|
data->vert = vert;
|
|
data->vert_allocated = vert_allocated;
|
|
data->loop = mloop;
|
|
data->loop_allocated = loop_allocated;
|
|
data->looptri = looptri;
|
|
data->looptri_allocated = looptri_allocated;
|
|
}
|
|
|
|
/**
|
|
* Builds a bvh tree where nodes are the looptri faces of the given bm
|
|
*/
|
|
BVHTree *bvhtree_from_editmesh_looptri_ex(BVHTreeFromEditMesh *data,
|
|
BMEditMesh *em,
|
|
const BLI_bitmap *looptri_mask,
|
|
int looptri_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
/* BMESH specific check that we have tessfaces,
|
|
* we _could_ tessellate here but rather not - campbell */
|
|
|
|
BVHTree *tree = NULL;
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
bool in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
if (in_cache == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
if (in_cache == false) {
|
|
tree = bvhtree_from_editmesh_looptri_create_tree(
|
|
epsilon, tree_type, axis, em, looptri_mask, looptri_num_active);
|
|
|
|
/* Save on cache for later use */
|
|
/* printf("BVHTree built and saved on cache\n"); */
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
}
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
else {
|
|
tree = bvhtree_from_editmesh_looptri_create_tree(
|
|
epsilon, tree_type, axis, em, looptri_mask, looptri_num_active);
|
|
}
|
|
|
|
if (tree) {
|
|
data->tree = tree;
|
|
data->nearest_callback = editmesh_looptri_nearest_point;
|
|
data->raycast_callback = editmesh_looptri_spherecast;
|
|
data->em = em;
|
|
data->cached = bvh_cache != NULL;
|
|
}
|
|
return tree;
|
|
}
|
|
|
|
BVHTree *bvhtree_from_editmesh_looptri(
|
|
BVHTreeFromEditMesh *data, BMEditMesh *em, float epsilon, int tree_type, int axis)
|
|
{
|
|
return bvhtree_from_editmesh_looptri_ex(data, em, NULL, -1, epsilon, tree_type, axis, 0, NULL);
|
|
}
|
|
|
|
/**
|
|
* Builds a bvh tree where nodes are the looptri faces of the given dm
|
|
*
|
|
* \note for editmesh this is currently a duplicate of bvhtree_from_mesh_faces_ex
|
|
*/
|
|
BVHTree *bvhtree_from_mesh_looptri_ex(BVHTreeFromMesh *data,
|
|
const struct MVert *vert,
|
|
const bool vert_allocated,
|
|
const struct MLoop *mloop,
|
|
const bool loop_allocated,
|
|
const struct MLoopTri *looptri,
|
|
const int looptri_num,
|
|
const bool looptri_allocated,
|
|
const BLI_bitmap *looptri_mask,
|
|
int looptri_num_active,
|
|
float epsilon,
|
|
int tree_type,
|
|
int axis,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
bool in_cache = false;
|
|
BVHTree *tree = NULL;
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
if (in_cache == false) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_WRITE);
|
|
in_cache = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
if (in_cache) {
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (in_cache == false) {
|
|
/* Setup BVHTreeFromMesh */
|
|
tree = bvhtree_from_mesh_looptri_create_tree(epsilon,
|
|
tree_type,
|
|
axis,
|
|
vert,
|
|
mloop,
|
|
looptri,
|
|
looptri_num,
|
|
looptri_mask,
|
|
looptri_num_active);
|
|
|
|
if (bvh_cache) {
|
|
bvhcache_insert(bvh_cache, tree, bvh_cache_type);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
in_cache = true;
|
|
}
|
|
}
|
|
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_looptri_setup_data(data,
|
|
tree,
|
|
in_cache,
|
|
vert,
|
|
vert_allocated,
|
|
mloop,
|
|
loop_allocated,
|
|
looptri,
|
|
looptri_allocated);
|
|
|
|
return tree;
|
|
}
|
|
|
|
static BLI_bitmap *loose_verts_map_get(const MEdge *medge,
|
|
int edges_num,
|
|
const MVert *UNUSED(mvert),
|
|
int verts_num,
|
|
int *r_loose_vert_num)
|
|
{
|
|
BLI_bitmap *loose_verts_mask = BLI_BITMAP_NEW(verts_num, __func__);
|
|
BLI_bitmap_set_all(loose_verts_mask, true, verts_num);
|
|
|
|
const MEdge *e = medge;
|
|
int num_linked_verts = 0;
|
|
for (; edges_num--; e++) {
|
|
if (BLI_BITMAP_TEST(loose_verts_mask, e->v1)) {
|
|
BLI_BITMAP_DISABLE(loose_verts_mask, e->v1);
|
|
num_linked_verts++;
|
|
}
|
|
if (BLI_BITMAP_TEST(loose_verts_mask, e->v2)) {
|
|
BLI_BITMAP_DISABLE(loose_verts_mask, e->v2);
|
|
num_linked_verts++;
|
|
}
|
|
}
|
|
|
|
*r_loose_vert_num = verts_num - num_linked_verts;
|
|
|
|
return loose_verts_mask;
|
|
}
|
|
|
|
static BLI_bitmap *loose_edges_map_get(const MEdge *medge,
|
|
const int edges_len,
|
|
int *r_loose_edge_len)
|
|
{
|
|
BLI_bitmap *loose_edges_mask = BLI_BITMAP_NEW(edges_len, __func__);
|
|
|
|
int loose_edges_len = 0;
|
|
const MEdge *e = medge;
|
|
for (int i = 0; i < edges_len; i++, e++) {
|
|
if (e->flag & ME_LOOSEEDGE) {
|
|
BLI_BITMAP_ENABLE(loose_edges_mask, i);
|
|
loose_edges_len++;
|
|
}
|
|
else {
|
|
BLI_BITMAP_DISABLE(loose_edges_mask, i);
|
|
}
|
|
}
|
|
|
|
*r_loose_edge_len = loose_edges_len;
|
|
|
|
return loose_edges_mask;
|
|
}
|
|
|
|
static BLI_bitmap *looptri_no_hidden_map_get(const MPoly *mpoly,
|
|
const int looptri_len,
|
|
int *r_looptri_active_len)
|
|
{
|
|
BLI_bitmap *looptri_mask = BLI_BITMAP_NEW(looptri_len, __func__);
|
|
|
|
int looptri_no_hidden_len = 0;
|
|
int looptri_iter = 0;
|
|
const MPoly *mp = mpoly;
|
|
while (looptri_iter != looptri_len) {
|
|
int mp_totlooptri = mp->totloop - 2;
|
|
if (mp->flag & ME_HIDE) {
|
|
looptri_iter += mp_totlooptri;
|
|
}
|
|
else {
|
|
while (mp_totlooptri--) {
|
|
BLI_BITMAP_ENABLE(looptri_mask, looptri_iter);
|
|
looptri_iter++;
|
|
looptri_no_hidden_len++;
|
|
}
|
|
}
|
|
mp++;
|
|
}
|
|
|
|
*r_looptri_active_len = looptri_no_hidden_len;
|
|
|
|
return looptri_mask;
|
|
}
|
|
|
|
/**
|
|
* Builds or queries a bvhcache for the cache bvhtree of the request type.
|
|
*/
|
|
BVHTree *BKE_bvhtree_from_mesh_get(struct BVHTreeFromMesh *data,
|
|
struct Mesh *mesh,
|
|
const int bvh_cache_type,
|
|
const int tree_type)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
BVHCache **bvh_cache = &mesh->runtime.bvh_cache;
|
|
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
bool is_cached = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
|
|
if (is_cached && tree == NULL) {
|
|
memset(data, 0, sizeof(*data));
|
|
return tree;
|
|
}
|
|
|
|
switch (bvh_cache_type) {
|
|
case BVHTREE_FROM_VERTS:
|
|
case BVHTREE_FROM_LOOSEVERTS:
|
|
if (is_cached == false) {
|
|
BLI_bitmap *loose_verts_mask = NULL;
|
|
int loose_vert_len = -1;
|
|
int verts_len = mesh->totvert;
|
|
|
|
if (bvh_cache_type == BVHTREE_FROM_LOOSEVERTS) {
|
|
loose_verts_mask = loose_verts_map_get(
|
|
mesh->medge, mesh->totedge, mesh->mvert, verts_len, &loose_vert_len);
|
|
}
|
|
|
|
/* TODO: a global mutex lock held during the expensive operation of
|
|
* building the BVH tree is really bad for performance. */
|
|
tree = bvhtree_from_mesh_verts_ex(data,
|
|
mesh->mvert,
|
|
verts_len,
|
|
false,
|
|
loose_verts_mask,
|
|
loose_vert_len,
|
|
0.0f,
|
|
tree_type,
|
|
6,
|
|
bvh_cache_type,
|
|
bvh_cache);
|
|
|
|
if (loose_verts_mask != NULL) {
|
|
MEM_freeN(loose_verts_mask);
|
|
}
|
|
}
|
|
else {
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_verts_setup_data(data, tree, true, mesh->mvert, false);
|
|
}
|
|
break;
|
|
|
|
case BVHTREE_FROM_EDGES:
|
|
case BVHTREE_FROM_LOOSEEDGES:
|
|
if (is_cached == false) {
|
|
BLI_bitmap *loose_edges_mask = NULL;
|
|
int loose_edges_len = -1;
|
|
int edges_len = mesh->totedge;
|
|
|
|
if (bvh_cache_type == BVHTREE_FROM_LOOSEEDGES) {
|
|
loose_edges_mask = loose_edges_map_get(mesh->medge, edges_len, &loose_edges_len);
|
|
}
|
|
|
|
tree = bvhtree_from_mesh_edges_ex(data,
|
|
mesh->mvert,
|
|
false,
|
|
mesh->medge,
|
|
edges_len,
|
|
false,
|
|
loose_edges_mask,
|
|
loose_edges_len,
|
|
0.0,
|
|
tree_type,
|
|
6,
|
|
bvh_cache_type,
|
|
bvh_cache);
|
|
|
|
if (loose_edges_mask != NULL) {
|
|
MEM_freeN(loose_edges_mask);
|
|
}
|
|
}
|
|
else {
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_edges_setup_data(
|
|
data, tree, true, mesh->mvert, false, mesh->medge, false);
|
|
}
|
|
break;
|
|
|
|
case BVHTREE_FROM_FACES:
|
|
if (is_cached == false) {
|
|
int num_faces = mesh->totface;
|
|
BLI_assert(!(num_faces == 0 && mesh->totpoly != 0));
|
|
|
|
tree = bvhtree_from_mesh_faces_ex(data,
|
|
mesh->mvert,
|
|
false,
|
|
mesh->mface,
|
|
num_faces,
|
|
false,
|
|
NULL,
|
|
-1,
|
|
0.0,
|
|
tree_type,
|
|
6,
|
|
bvh_cache_type,
|
|
bvh_cache);
|
|
}
|
|
else {
|
|
/* Setup BVHTreeFromMesh */
|
|
bvhtree_from_mesh_faces_setup_data(
|
|
data, tree, true, mesh->mvert, false, mesh->mface, false);
|
|
}
|
|
break;
|
|
|
|
case BVHTREE_FROM_LOOPTRI:
|
|
case BVHTREE_FROM_LOOPTRI_NO_HIDDEN:
|
|
if (is_cached == false) {
|
|
const MLoopTri *mlooptri = BKE_mesh_runtime_looptri_ensure(mesh);
|
|
int looptri_len = BKE_mesh_runtime_looptri_len(mesh);
|
|
|
|
int looptri_mask_active_len = -1;
|
|
BLI_bitmap *looptri_mask = NULL;
|
|
if (bvh_cache_type == BVHTREE_FROM_LOOPTRI_NO_HIDDEN) {
|
|
looptri_mask = looptri_no_hidden_map_get(
|
|
mesh->mpoly, looptri_len, &looptri_mask_active_len);
|
|
}
|
|
|
|
tree = bvhtree_from_mesh_looptri_ex(data,
|
|
mesh->mvert,
|
|
false,
|
|
mesh->mloop,
|
|
false,
|
|
mlooptri,
|
|
looptri_len,
|
|
false,
|
|
looptri_mask,
|
|
looptri_mask_active_len,
|
|
0.0,
|
|
tree_type,
|
|
6,
|
|
bvh_cache_type,
|
|
bvh_cache);
|
|
}
|
|
else {
|
|
/* Setup BVHTreeFromMesh */
|
|
const MLoopTri *mlooptri = BKE_mesh_runtime_looptri_ensure(mesh);
|
|
bvhtree_from_mesh_looptri_setup_data(
|
|
data, tree, true, mesh->mvert, false, mesh->mloop, false, mlooptri, false);
|
|
}
|
|
break;
|
|
case BVHTREE_FROM_EM_VERTS:
|
|
case BVHTREE_FROM_EM_EDGES:
|
|
case BVHTREE_FROM_EM_LOOPTRI:
|
|
BLI_assert(false);
|
|
break;
|
|
}
|
|
|
|
if (data->tree != NULL) {
|
|
#ifdef DEBUG
|
|
if (BLI_bvhtree_get_tree_type(data->tree) != tree_type) {
|
|
printf("tree_type %d obtained instead of %d\n",
|
|
BLI_bvhtree_get_tree_type(data->tree),
|
|
tree_type);
|
|
}
|
|
#endif
|
|
BLI_assert(data->cached);
|
|
}
|
|
else {
|
|
free_bvhtree_from_mesh(data);
|
|
memset(data, 0, sizeof(*data));
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
/**
|
|
* Builds or queries a bvhcache for the cache bvhtree of the request type.
|
|
*/
|
|
BVHTree *BKE_bvhtree_from_editmesh_get(BVHTreeFromEditMesh *data,
|
|
struct BMEditMesh *em,
|
|
const int tree_type,
|
|
const int bvh_cache_type,
|
|
BVHCache **bvh_cache)
|
|
{
|
|
BVHTree *tree = NULL;
|
|
bool is_cached = false;
|
|
|
|
memset(data, 0, sizeof(*data));
|
|
|
|
if (bvh_cache) {
|
|
BLI_rw_mutex_lock(&cache_rwlock, THREAD_LOCK_READ);
|
|
is_cached = bvhcache_find(*bvh_cache, bvh_cache_type, &tree);
|
|
BLI_rw_mutex_unlock(&cache_rwlock);
|
|
|
|
if (is_cached && tree == NULL) {
|
|
return tree;
|
|
}
|
|
}
|
|
data->tree = tree;
|
|
data->em = em;
|
|
data->cached = is_cached;
|
|
|
|
switch (bvh_cache_type) {
|
|
case BVHTREE_FROM_EM_VERTS:
|
|
if (is_cached == false) {
|
|
tree = bvhtree_from_editmesh_verts_ex(
|
|
data, em, NULL, -1, 0.0f, tree_type, 6, bvh_cache_type, bvh_cache);
|
|
}
|
|
else {
|
|
data->nearest_callback = NULL;
|
|
data->raycast_callback = editmesh_verts_spherecast;
|
|
}
|
|
break;
|
|
|
|
case BVHTREE_FROM_EM_EDGES:
|
|
if (is_cached == false) {
|
|
tree = bvhtree_from_editmesh_edges_ex(
|
|
data, em, NULL, -1, 0.0f, tree_type, 6, bvh_cache_type, bvh_cache);
|
|
}
|
|
else {
|
|
/* Setup BVHTreeFromMesh */
|
|
data->nearest_callback = NULL; /* TODO */
|
|
data->raycast_callback = NULL; /* TODO */
|
|
}
|
|
break;
|
|
|
|
case BVHTREE_FROM_EM_LOOPTRI:
|
|
if (is_cached == false) {
|
|
tree = bvhtree_from_editmesh_looptri_ex(
|
|
data, em, NULL, -1, 0.0f, tree_type, 6, bvh_cache_type, bvh_cache);
|
|
}
|
|
else {
|
|
/* Setup BVHTreeFromMesh */
|
|
data->nearest_callback = editmesh_looptri_nearest_point;
|
|
data->raycast_callback = editmesh_looptri_spherecast;
|
|
}
|
|
break;
|
|
case BVHTREE_FROM_VERTS:
|
|
case BVHTREE_FROM_EDGES:
|
|
case BVHTREE_FROM_FACES:
|
|
case BVHTREE_FROM_LOOPTRI:
|
|
case BVHTREE_FROM_LOOPTRI_NO_HIDDEN:
|
|
case BVHTREE_FROM_LOOSEVERTS:
|
|
case BVHTREE_FROM_LOOSEEDGES:
|
|
BLI_assert(false);
|
|
break;
|
|
}
|
|
|
|
if (data->tree != NULL) {
|
|
#ifdef DEBUG
|
|
if (BLI_bvhtree_get_tree_type(data->tree) != tree_type) {
|
|
printf("tree_type %d obtained instead of %d\n",
|
|
BLI_bvhtree_get_tree_type(data->tree),
|
|
tree_type);
|
|
}
|
|
#endif
|
|
BLI_assert(data->cached);
|
|
}
|
|
else {
|
|
free_bvhtree_from_editmesh(data);
|
|
memset(data, 0, sizeof(*data));
|
|
}
|
|
|
|
return tree;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* Frees data allocated by a call to bvhtree_from_editmesh_*. */
|
|
void free_bvhtree_from_editmesh(struct BVHTreeFromEditMesh *data)
|
|
{
|
|
if (data->tree) {
|
|
if (!data->cached) {
|
|
BLI_bvhtree_free(data->tree);
|
|
}
|
|
memset(data, 0, sizeof(*data));
|
|
}
|
|
}
|
|
|
|
/* Frees data allocated by a call to bvhtree_from_mesh_*. */
|
|
void free_bvhtree_from_mesh(struct BVHTreeFromMesh *data)
|
|
{
|
|
if (data->tree && !data->cached) {
|
|
BLI_bvhtree_free(data->tree);
|
|
}
|
|
|
|
if (data->vert_allocated) {
|
|
MEM_freeN((void *)data->vert);
|
|
}
|
|
if (data->edge_allocated) {
|
|
MEM_freeN((void *)data->edge);
|
|
}
|
|
if (data->face_allocated) {
|
|
MEM_freeN((void *)data->face);
|
|
}
|
|
if (data->loop_allocated) {
|
|
MEM_freeN((void *)data->loop);
|
|
}
|
|
if (data->looptri_allocated) {
|
|
MEM_freeN((void *)data->looptri);
|
|
}
|
|
|
|
memset(data, 0, sizeof(*data));
|
|
}
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name BVHCache
|
|
* \{ */
|
|
|
|
typedef struct BVHCacheItem {
|
|
int type;
|
|
BVHTree *tree;
|
|
|
|
} BVHCacheItem;
|
|
|
|
/**
|
|
* Queries a bvhcache for the cache bvhtree of the request type
|
|
*/
|
|
bool bvhcache_find(const BVHCache *cache, int type, BVHTree **r_tree)
|
|
{
|
|
while (cache) {
|
|
const BVHCacheItem *item = cache->link;
|
|
if (item->type == type) {
|
|
*r_tree = item->tree;
|
|
return true;
|
|
}
|
|
cache = cache->next;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool bvhcache_has_tree(const BVHCache *cache, const BVHTree *tree)
|
|
{
|
|
while (cache) {
|
|
const BVHCacheItem *item = cache->link;
|
|
if (item->tree == tree) {
|
|
return true;
|
|
}
|
|
cache = cache->next;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Inserts a BVHTree of the given type under the cache
|
|
* After that the caller no longer needs to worry when to free the BVHTree
|
|
* as that will be done when the cache is freed.
|
|
*
|
|
* A call to this assumes that there was no previous cached tree of the given type
|
|
* \warning The #BVHTree can be NULL.
|
|
*/
|
|
void bvhcache_insert(BVHCache **cache_p, BVHTree *tree, int type)
|
|
{
|
|
BVHCacheItem *item = NULL;
|
|
|
|
BLI_assert(bvhcache_find(*cache_p, type, &(BVHTree *){0}) == false);
|
|
|
|
item = MEM_mallocN(sizeof(BVHCacheItem), "BVHCacheItem");
|
|
|
|
item->type = type;
|
|
item->tree = tree;
|
|
|
|
BLI_linklist_prepend(cache_p, item);
|
|
}
|
|
|
|
/**
|
|
* frees a bvhcache
|
|
*/
|
|
static void bvhcacheitem_free(void *_item)
|
|
{
|
|
BVHCacheItem *item = (BVHCacheItem *)_item;
|
|
|
|
BLI_bvhtree_free(item->tree);
|
|
MEM_freeN(item);
|
|
}
|
|
|
|
void bvhcache_free(BVHCache **cache_p)
|
|
{
|
|
BLI_linklist_free(*cache_p, (LinkNodeFreeFP)bvhcacheitem_free);
|
|
*cache_p = NULL;
|
|
}
|
|
|
|
/** \} */
|