diff options
Diffstat (limited to 'source/blender/editors/transform/transform_snap_object.c')
| -rw-r--r-- | source/blender/editors/transform/transform_snap_object.c | 186 |
1 files changed, 165 insertions, 21 deletions
diff --git a/source/blender/editors/transform/transform_snap_object.c b/source/blender/editors/transform/transform_snap_object.c index f35a2808f22..14e8b8f97e0 100644 --- a/source/blender/editors/transform/transform_snap_object.c +++ b/source/blender/editors/transform/transform_snap_object.c @@ -201,8 +201,12 @@ static SnapObjectData_EditMesh *snap_object_data_editmesh_get(SnapObjectContext return *sod_p; } -typedef void (*IterSnapObjsCallback)( - SnapObjectContext *sctx, bool is_obedit, Object *ob, float obmat[4][4], void *data); +typedef void (*IterSnapObjsCallback)(SnapObjectContext *sctx, + bool is_obedit, + bool use_backface_culling, + Object *ob, + float obmat[4][4], + void *data); /** * Walks through all objects in the scene to create the list of objects to snap. @@ -219,6 +223,7 @@ static void iter_snap_objects(SnapObjectContext *sctx, const View3D *v3d = sctx->v3d_data.v3d; const eSnapSelect snap_select = params->snap_select; const bool use_object_edit_cage = params->use_object_edit_cage; + const bool use_backface_culling = params->use_backface_culling; Base *base_act = view_layer->basact; for (Base *base = view_layer->object_bases.first; base != NULL; base = base->next) { @@ -250,12 +255,14 @@ static void iter_snap_objects(SnapObjectContext *sctx, DupliObject *dupli_ob; ListBase *lb = object_duplilist(sctx->depsgraph, sctx->scene, obj_eval); for (dupli_ob = lb->first; dupli_ob; dupli_ob = dupli_ob->next) { - sob_callback(sctx, use_object_edit_cage, dupli_ob->ob, dupli_ob->mat, data); + sob_callback( + sctx, use_object_edit_cage, use_backface_culling, dupli_ob->ob, dupli_ob->mat, data); } free_object_duplilist(lb); } - sob_callback(sctx, use_object_edit_cage, obj_eval, obj_eval->obmat, data); + sob_callback( + sctx, use_object_edit_cage, use_backface_culling, obj_eval, obj_eval->obmat, data); } } @@ -350,6 +357,70 @@ static void raycast_all_cb(void *userdata, int index, const BVHTreeRay *ray, BVH } } +static bool raycast_tri_backface_culling_test( + const float dir[3], const float v0[3], const float v1[3], const float v2[3], float no[3]) +{ + cross_tri_v3(no, v0, v1, v2); + return dot_v3v3(no, dir) < 0.0f; +} + +/* Callback to raycast with backface culling (Mesh). */ +static void mesh_looptri_raycast_backface_culling_cb(void *userdata, + int index, + const BVHTreeRay *ray, + BVHTreeRayHit *hit) +{ + const BVHTreeFromMesh *data = (BVHTreeFromMesh *)userdata; + const MVert *vert = data->vert; + const MLoopTri *lt = &data->looptri[index]; + const float *vtri_co[3] = { + vert[data->loop[lt->tri[0]].v].co, + vert[data->loop[lt->tri[1]].v].co, + vert[data->loop[lt->tri[2]].v].co, + }; + float dist = bvhtree_ray_tri_intersection(ray, hit->dist, UNPACK3(vtri_co)); + + if (dist >= 0 && dist < hit->dist) { + float no[3]; + if (raycast_tri_backface_culling_test(ray->direction, UNPACK3(vtri_co), no)) { + hit->index = index; + hit->dist = dist; + madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist); + normalize_v3_v3(hit->no, no); + } + } +} + +/* Callback to raycast with backface culling (EditMesh). */ +static void editmesh_looptri_raycast_backface_culling_cb(void *userdata, + int index, + const BVHTreeRay *ray, + BVHTreeRayHit *hit) +{ + const BVHTreeFromEditMesh *data = (BVHTreeFromEditMesh *)userdata; + BMEditMesh *em = data->em; + const BMLoop **ltri = (const BMLoop **)em->looptris[index]; + + const float *t0, *t1, *t2; + t0 = ltri[0]->v->co; + t1 = ltri[1]->v->co; + t2 = ltri[2]->v->co; + + { + float dist = bvhtree_ray_tri_intersection(ray, hit->dist, t0, t1, t2); + + if (dist >= 0 && dist < hit->dist) { + float no[3]; + if (raycast_tri_backface_culling_test(ray->direction, t0, t1, t2, no)) { + hit->index = index; + hit->dist = dist; + madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist); + normalize_v3_v3(hit->no, no); + } + } + } +} + static bool raycastMesh(SnapObjectContext *sctx, const float ray_start[3], const float ray_dir[3], @@ -358,6 +429,7 @@ static bool raycastMesh(SnapObjectContext *sctx, const float obmat[4][4], const unsigned int ob_index, bool use_hide, + bool use_backface_culling, /* read/write args */ float *ray_depth, /* return args */ @@ -494,7 +566,8 @@ static bool raycastMesh(SnapObjectContext *sctx, ray_normal_local, 0.0f, &hit, - treedata->raycast_callback, + use_backface_culling ? mesh_looptri_raycast_backface_culling_cb : + treedata->raycast_callback, treedata) != -1) { hit.dist += len_diff; hit.dist /= local_scale; @@ -530,6 +603,7 @@ static bool raycastEditMesh(SnapObjectContext *sctx, BMEditMesh *em, const float obmat[4][4], const unsigned int ob_index, + bool use_backface_culling, /* read/write args */ float *ray_depth, /* return args */ @@ -670,7 +744,8 @@ static bool raycastEditMesh(SnapObjectContext *sctx, ray_normal_local, 0.0f, &hit, - treedata->raycast_callback, + use_backface_culling ? editmesh_looptri_raycast_backface_culling_cb : + treedata->raycast_callback, treedata) != -1) { hit.dist += len_diff; hit.dist /= local_scale; @@ -715,6 +790,7 @@ static bool raycastObj(SnapObjectContext *sctx, const unsigned int ob_index, bool use_obedit, bool use_occlusion_test, + bool use_backface_culling, /* read/write args */ float *ray_depth, /* return args */ @@ -753,6 +829,7 @@ static bool raycastObj(SnapObjectContext *sctx, em, obmat, ob_index, + use_backface_culling, ray_depth, r_loc, r_no, @@ -773,6 +850,7 @@ static bool raycastObj(SnapObjectContext *sctx, obmat, ob_index, use_hide, + use_backface_culling, ray_depth, r_loc, r_no, @@ -792,6 +870,7 @@ static bool raycastObj(SnapObjectContext *sctx, obmat, ob_index, false, + use_backface_culling, ray_depth, r_loc, r_no, @@ -832,8 +911,12 @@ struct RaycastObjUserData { bool ret; }; -static void raycast_obj_cb( - SnapObjectContext *sctx, bool use_obedit, Object *ob, float obmat[4][4], void *data) +static void raycast_obj_cb(SnapObjectContext *sctx, + bool use_obedit, + bool use_backface_culling, + Object *ob, + float obmat[4][4], + void *data) { struct RaycastObjUserData *dt = data; @@ -845,6 +928,7 @@ static void raycast_obj_cb( dt->ob_index++, use_obedit, dt->use_occlusion_test, + use_backface_culling, dt->ray_depth, dt->r_loc, dt->r_no, @@ -1088,8 +1172,6 @@ typedef void (*Nearest2DGetTriEdgesCallback)(const int index, int e_index[3], vo typedef void (*Nearest2DCopyVertNoCallback)(const int index, float r_no[3], void *data); typedef struct Nearest2dUserData { - bool is_persp; - void *userdata; Nearest2DGetVertCoCallback get_vert_co; Nearest2DGetEdgeVertsCallback get_edge_verts_index; @@ -1097,6 +1179,8 @@ typedef struct Nearest2dUserData { Nearest2DGetTriEdgesCallback get_tri_edges_index; Nearest2DCopyVertNoCallback copy_vert_no; + bool is_persp; + bool use_backface_culling; } Nearest2dUserData; static void cb_snap_vert(void *userdata, @@ -1181,6 +1265,20 @@ static void cb_snap_tri_edges(void *userdata, { struct Nearest2dUserData *data = userdata; + if (data->use_backface_culling) { + int vindex[3]; + data->get_tri_verts_index(index, vindex, data->userdata); + + const float *t0, *t1, *t2; + data->get_vert_co(vindex[0], &t0, data->userdata); + data->get_vert_co(vindex[1], &t1, data->userdata); + data->get_vert_co(vindex[2], &t2, data->userdata); + float dummy[3]; + if (raycast_tri_backface_culling_test(precalc->ray_direction, t0, t1, t2, dummy)) { + return; + } + } + int eindex[3]; data->get_tri_edges_index(index, eindex, data->userdata); for (int i = 3; i--;) { @@ -1204,6 +1302,18 @@ static void cb_snap_tri_verts(void *userdata, int vindex[3]; data->get_tri_verts_index(index, vindex, data->userdata); + + if (data->use_backface_culling) { + const float *t0, *t1, *t2; + data->get_vert_co(vindex[0], &t0, data->userdata); + data->get_vert_co(vindex[1], &t1, data->userdata); + data->get_vert_co(vindex[2], &t2, data->userdata); + float dummy[3]; + if (raycast_tri_backface_culling_test(precalc->ray_direction, t0, t1, t2, dummy)) { + return; + } + } + for (int i = 3; i--;) { if (vindex[i] == nearest->index) { continue; @@ -1222,6 +1332,7 @@ static short snap_mesh_polygon(SnapObjectContext *sctx, SnapData *snapdata, Object *ob, const float obmat[4][4], + bool use_backface_culling, /* read/write args */ float *dist_px, /* return args */ @@ -1246,6 +1357,7 @@ static short snap_mesh_polygon(SnapObjectContext *sctx, Nearest2dUserData nearest2d = { .is_persp = snapdata->view_proj == VIEW_PROJ_PERSP, + .use_backface_culling = use_backface_culling, }; BVHTreeNearest nearest = { @@ -1366,6 +1478,7 @@ static short snap_mesh_edge_verts_mixed(SnapObjectContext *sctx, const float obmat[4][4], float original_dist_px, const float prev_co[3], + bool use_backface_culling, /* read/write args */ float *dist_px, /* return args */ @@ -1392,6 +1505,7 @@ static short snap_mesh_edge_verts_mixed(SnapObjectContext *sctx, Nearest2dUserData nearest2d; { nearest2d.is_persp = snapdata->view_proj == VIEW_PROJ_PERSP; + nearest2d.use_backface_culling = use_backface_culling; if (sod->type == SNAP_MESH) { nearest2d.userdata = &((SnapObjectData_Mesh *)sod)->treedata; nearest2d.get_vert_co = (Nearest2DGetVertCoCallback)cb_mvert_co_get; @@ -1995,6 +2109,7 @@ static short snapMesh(SnapObjectContext *sctx, Object *ob, Mesh *me, const float obmat[4][4], + bool use_backface_culling, /* read/write args */ float *dist_px, /* return args */ @@ -2107,13 +2222,14 @@ static short snapMesh(SnapObjectContext *sctx, } Nearest2dUserData nearest2d = { - .is_persp = snapdata->view_proj == VIEW_PROJ_PERSP, .userdata = treedata, .get_vert_co = (Nearest2DGetVertCoCallback)cb_mvert_co_get, .get_edge_verts_index = (Nearest2DGetEdgeVertsCallback)cb_medge_verts_get, .get_tri_verts_index = (Nearest2DGetTriVertsCallback)cb_mlooptri_verts_get, .get_tri_edges_index = (Nearest2DGetTriEdgesCallback)cb_mlooptri_edges_get, .copy_vert_no = (Nearest2DCopyVertNoCallback)cb_mvert_no_copy, + .is_persp = snapdata->view_proj == VIEW_PROJ_PERSP, + .use_backface_culling = use_backface_culling, }; BVHTreeNearest nearest = { @@ -2233,6 +2349,7 @@ static short snapEditMesh(SnapObjectContext *sctx, Object *ob, BMEditMesh *em, const float obmat[4][4], + bool use_backface_culling, /* read/write args */ float *dist_px, /* return args */ @@ -2346,11 +2463,12 @@ static short snapEditMesh(SnapObjectContext *sctx, } Nearest2dUserData nearest2d = { - .is_persp = snapdata->view_proj == VIEW_PROJ_PERSP, .userdata = em, .get_vert_co = (Nearest2DGetVertCoCallback)cb_bvert_co_get, .get_edge_verts_index = (Nearest2DGetEdgeVertsCallback)cb_bedge_verts_get, .copy_vert_no = (Nearest2DCopyVertNoCallback)cb_bvert_no_copy, + .is_persp = snapdata->view_proj == VIEW_PROJ_PERSP, + .use_backface_culling = use_backface_culling, }; BVHTreeNearest nearest = { @@ -2436,6 +2554,7 @@ static short snapObject(SnapObjectContext *sctx, Object *ob, float obmat[4][4], bool use_obedit, + bool use_backface_culling, /* read/write args */ float *dist_px, /* return args */ @@ -2453,7 +2572,8 @@ static short snapObject(SnapObjectContext *sctx, if (BKE_object_is_in_editmode(ob)) { BMEditMesh *em = BKE_editmesh_from_object(ob); if (use_obedit) { - retval = snapEditMesh(sctx, snapdata, ob, em, obmat, dist_px, r_loc, r_no, r_index); + retval = snapEditMesh( + sctx, snapdata, ob, em, obmat, use_backface_culling, dist_px, r_loc, r_no, r_index); break; } else if (em->mesh_eval_final) { @@ -2465,7 +2585,8 @@ static short snapObject(SnapObjectContext *sctx, return 0; } - retval = snapMesh(sctx, snapdata, ob, me, obmat, dist_px, r_loc, r_no, r_index); + retval = snapMesh( + sctx, snapdata, ob, me, obmat, use_backface_culling, dist_px, r_loc, r_no, r_index); break; } case OB_ARMATURE: @@ -2477,8 +2598,16 @@ static short snapObject(SnapObjectContext *sctx, case OB_SURF: case OB_FONT: { if (ob->runtime.mesh_eval) { - retval |= snapMesh( - sctx, snapdata, ob, ob->runtime.mesh_eval, obmat, dist_px, r_loc, r_no, r_index); + retval |= snapMesh(sctx, + snapdata, + ob, + ob->runtime.mesh_eval, + obmat, + use_backface_culling, + dist_px, + r_loc, + r_no, + r_index); } break; } @@ -2519,8 +2648,12 @@ struct SnapObjUserData { short ret; }; -static void sanp_obj_cb( - SnapObjectContext *sctx, bool is_obedit, Object *ob, float obmat[4][4], void *data) +static void sanp_obj_cb(SnapObjectContext *sctx, + bool is_obedit, + bool use_backface_culling, + Object *ob, + float obmat[4][4], + void *data) { struct SnapObjUserData *dt = data; @@ -2529,6 +2662,7 @@ static void sanp_obj_cb( ob, obmat, is_obedit, + use_backface_culling, /* read/write args */ dt->dist_px, /* return args */ @@ -2881,7 +3015,8 @@ static short transform_snap_context_project_view3d_mixed_impl( new_clipplane[3] += 0.01f; /* Try to snap only to the polygon. */ - elem_test = snap_mesh_polygon(sctx, &snapdata, ob, obmat, &dist_px_tmp, loc, no, &index); + elem_test = snap_mesh_polygon( + sctx, &snapdata, ob, obmat, params->use_backface_culling, &dist_px_tmp, loc, no, &index); if (elem_test) { elem = elem_test; } @@ -2904,8 +3039,17 @@ static short transform_snap_context_project_view3d_mixed_impl( (snap_to_flag & (SCE_SNAP_MODE_VERTEX | SCE_SNAP_MODE_EDGE_MIDPOINT | SCE_SNAP_MODE_EDGE_PERPENDICULAR))) { snapdata.snap_to_flag = snap_to_flag; - elem = snap_mesh_edge_verts_mixed( - sctx, &snapdata, ob, obmat, *dist_px, prev_co, &dist_px_tmp, loc, no, &index); + elem = snap_mesh_edge_verts_mixed(sctx, + &snapdata, + ob, + obmat, + *dist_px, + prev_co, + params->use_backface_culling, + &dist_px_tmp, + loc, + no, + &index); } if (elem & snap_to_flag) { |