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Cleanup: Clarify a few comments in pbvh_intern.h

This commit is contained in:
Joseph Eagar 2022-04-11 09:47:40 -07:00
parent 0329145712
commit e7a69b438f
1 changed files with 17 additions and 7 deletions
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24
source/blender/blenkernel/intern/pbvh_intern.h
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@ -32,13 +32,18 @@ struct PBVHNode {
* 'nodes' array. */
int children_offset;
/* Pointer into the PBVH prim_indices array and the number of
* primitives used by this leaf node.
/* List of primitives for this node. Semantics depends on
* PBVH type:
*
* Used for leaf nodes in both mesh- and multires-based PBVHs.
* - PBVH_FACES: Indices into the PBVH.looptri array.
* - PBVH_GRIDS: Multires grid indices.
* - PBVH_BMESH: Unused. See PBVHNode.bm_faces.
*
* NOTE: This is a pointer inside of PBVH.prim_indices; it
* is not allocated separately per node.
*/
int *prim_indices;
unsigned int totprim;
unsigned int totprim; /* Number of primitives inside prim_indices. */
/* Array of indices into the mesh's MVert array. Contains the
* indices of all vertices used by faces that are within this
@ -63,9 +68,8 @@ struct PBVHNode {
unsigned int uniq_verts, face_verts;
/* Array of indices into the Mesh's MLoop array.
* PBVH_FACES only. The first part of the array
* are loops unique to this node, see comment for
* vert_indices for more details.*/
* PBVH_FACES only.
*/
int *loop_indices;
unsigned int loop_indices_num;
@ -93,6 +97,11 @@ struct PBVHNode {
PBVHProxyNode *proxies;
/* Dyntopo */
/* GSet of pointers to the BMFaces used by this node.
* NOTE: PBVH_BMESH only. Faces are always triangles
* (dynamic topology forcibly triangulates the mesh).
*/
GSet *bm_faces;
GSet *bm_unique_verts;
GSet *bm_other_verts;
@ -117,6 +126,7 @@ struct PBVH {
PBVHNode *nodes;
int node_mem_count, totnode;
/* Memory backing for PBVHNode.prim_indices. */
int *prim_indices;
int totprim;
int totvert;