diff options
Diffstat (limited to 'source/blender/blenlib/intern/pbvh.c')
| -rw-r--r-- | source/blender/blenlib/intern/pbvh.c | 118 |
1 files changed, 59 insertions, 59 deletions
diff --git a/source/blender/blenlib/intern/pbvh.c b/source/blender/blenlib/intern/pbvh.c index 318cd15d2e9..9e785f30ec7 100644 --- a/source/blender/blenlib/intern/pbvh.c +++ b/source/blender/blenlib/intern/pbvh.c @@ -63,52 +63,52 @@ struct PBVHNode { BB orig_vb; /* For internal nodes, the offset of the children in the PBVH - 'nodes' array. */ + * 'nodes' array. */ int children_offset; /* Pointer into the PBVH prim_indices array and the number of - primitives used by this leaf node. - - Used for leaf nodes in both mesh- and multires-based PBVHs. - */ + * primitives used by this leaf node. + * + * Used for leaf nodes in both mesh- and multires-based PBVHs. + */ int *prim_indices; unsigned int totprim; /* Array of indices into the mesh's MVert array. Contains the - indices of all vertices used by faces that are within this - node's bounding box. - - Note that a vertex might be used by a multiple faces, and - these faces might be in different leaf nodes. Such a vertex - will appear in the vert_indices array of each of those leaf - nodes. - - In order to support cases where you want access to multiple - nodes' vertices without duplication, the vert_indices array - is ordered such that the first part of the array, up to - index 'uniq_verts', contains "unique" vertex indices. These - vertices might not be truly unique to this node, but if - they appear in another node's vert_indices array, they will - be above that node's 'uniq_verts' value. - - Used for leaf nodes in a mesh-based PBVH (not multires.) - */ + * indices of all vertices used by faces that are within this + * node's bounding box. + * + * Note that a vertex might be used by a multiple faces, and + * these faces might be in different leaf nodes. Such a vertex + * will appear in the vert_indices array of each of those leaf + * nodes. + * + * In order to support cases where you want access to multiple + * nodes' vertices without duplication, the vert_indices array + * is ordered such that the first part of the array, up to + * index 'uniq_verts', contains "unique" vertex indices. These + * vertices might not be truly unique to this node, but if + * they appear in another node's vert_indices array, they will + * be above that node's 'uniq_verts' value. + * + * Used for leaf nodes in a mesh-based PBVH (not multires.) + */ int *vert_indices; unsigned int uniq_verts, face_verts; /* An array mapping face corners into the vert_indices - array. The array is sized to match 'totprim', and each of - the face's corners gets an index into the vert_indices - array, in the same order as the corners in the original - MFace. The fourth value should not be used if the original - face is a triangle. - - Used for leaf nodes in a mesh-based PBVH (not multires.) - */ + * array. The array is sized to match 'totprim', and each of + * the face's corners gets an index into the vert_indices + * array, in the same order as the corners in the original + * MFace. The fourth value should not be used if the original + * face is a triangle. + * + * Used for leaf nodes in a mesh-based PBVH (not multires.) + */ int (*face_vert_indices)[4]; /* Indicates whether this node is a leaf or not; also used for - marking various updates that need to be applied. */ + * marking various updates that need to be applied. */ PBVHNodeFlags flag : 8; /* Used for raycasting: how close bb is to the ray point. */ @@ -140,7 +140,7 @@ struct PBVH { int gridsize; /* Only used during BVH build and update, - don't need to remain valid after */ + * don't need to remain valid after */ BLI_bitmap vert_bitmap; #ifdef PERFCNTRS @@ -311,7 +311,7 @@ static void grow_nodes(PBVH *bvh, int totnode) } /* Add a vertex to the map, with a positive value for unique vertices and - a negative value for additional vertices */ + * a negative value for additional vertices */ static int map_insert_vert(PBVH *bvh, GHash *map, unsigned int *face_verts, unsigned int *uniq_verts, int vertex) @@ -417,15 +417,15 @@ static void build_grids_leaf_node(PBVH *bvh, PBVHNode *node) } /* Recursively build a node in the tree - - vb is the voxel box around all of the primitives contained in - this node. - - cb is the bounding box around all the centroids of the primitives - contained in this node - - offset and start indicate a range in the array of primitive indices -*/ + * + * vb is the voxel box around all of the primitives contained in + * this node. + * + * cb is the bounding box around all the centroids of the primitives + * contained in this node + * + * offset and start indicate a range in the array of primitive indices + */ static void build_sub(PBVH *bvh, int node_index, BB *cb, BBC *prim_bbc, int offset, int count) @@ -689,7 +689,7 @@ static PBVHNode *pbvh_iter_next(PBVHIter *iter) int revisiting; /* purpose here is to traverse tree, visiting child nodes before their - parents, this order is necessary for e.g. computing bounding boxes */ + * parents, this order is necessary for e.g. computing bounding boxes */ while(iter->stacksize) { /* pop node */ @@ -925,18 +925,18 @@ static void pbvh_update_normals(PBVH *bvh, PBVHNode **nodes, return; /* could be per node to save some memory, but also means - we have to store for each vertex which node it is in */ + * we have to store for each vertex which node it is in */ vnor= MEM_callocN(sizeof(float)*3*bvh->totvert, "bvh temp vnors"); - /* subtle assumptions: - - We know that for all edited vertices, the nodes with faces - adjacent to these vertices have been marked with PBVH_UpdateNormals. - This is true because if the vertex is inside the brush radius, the - bounding box of it's adjacent faces will be as well. - - However this is only true for the vertices that have actually been - edited, not for all vertices in the nodes marked for update, so we - can only update vertices marked with ME_VERT_PBVH_UPDATE. - */ + /* subtle assumptions: + * - We know that for all edited vertices, the nodes with faces + * adjacent to these vertices have been marked with PBVH_UpdateNormals. + * This is true because if the vertex is inside the brush radius, the + * bounding box of it's adjacent faces will be as well. + * - However this is only true for the vertices that have actually been + * edited, not for all vertices in the nodes marked for update, so we + * can only update vertices marked with ME_VERT_PBVH_UPDATE. + */ #pragma omp parallel for private(n) schedule(static) for(n = 0; n < totnode; n++) { @@ -966,7 +966,7 @@ static void pbvh_update_normals(PBVH *bvh, PBVHNode **nodes, if(bvh->verts[v].flag & ME_VERT_PBVH_UPDATE) { /* this seems like it could be very slow but profile - does not show this, so just leave it for now? */ + * does not show this, so just leave it for now? */ #pragma omp atomic vnor[v][0] += fn[0]; #pragma omp atomic @@ -1454,10 +1454,10 @@ void BLI_pbvh_node_draw(PBVHNode *node, void *UNUSED(data)) } /* Adapted from: - http://www.gamedev.net/community/forums/topic.asp?topic_id=512123 - Returns true if the AABB is at least partially within the frustum - (ok, not a real frustum), false otherwise. -*/ + * http://www.gamedev.net/community/forums/topic.asp?topic_id=512123 + * Returns true if the AABB is at least partially within the frustum + * (ok, not a real frustum), false otherwise. + */ int BLI_pbvh_node_planes_contain_AABB(PBVHNode *node, void *data) { float (*planes)[4] = data; |