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BMesh: add BM_loop_other_vert_loop_by_edge

This commit is contained in:
Campbell Barton 2020-07-06 17:40:55 +10:00
parent 705015e0a4
commit b51b893df8
2 changed files with 33 additions and 0 deletions
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31
source/blender/bmesh/intern/bmesh_query.c
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@ -157,6 +157,37 @@ BMLoop *BM_loop_other_vert_loop(BMLoop *l, BMVert *v)
#endif
}
/**
* Return the other loop that uses this edge.
*
* In this case the loop defines the vertex,
* the edge passed in defines the direction to step.
*
* <pre>
* +----------+ <-- Return the face-loop of this vertex.
* | |
* | e | <-- This edge defines the direction.
* | |
* +----------+ <-- This loop defines the face and vertex..
* l
* </pre>
*
*/
BMLoop *BM_loop_other_vert_loop_by_edge(BMLoop *l, BMEdge *e)
{
BLI_assert(BM_vert_in_edge(e, l->v));
if (l->e == e) {
return l->next;
}
else if (l->prev->e == e) {
return l->prev;
}
else {
BLI_assert(0);
return NULL;
}
}
/**
* Check if verts share a face.
*/

2
source/blender/bmesh/intern/bmesh_query.h
View File

@ -48,6 +48,8 @@ BMLoop *BM_face_other_edge_loop(BMFace *f, BMEdge *e, BMVert *v) ATTR_WARN_UNUSE
BMLoop *BM_loop_other_edge_loop(BMLoop *l, BMVert *v) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
BMLoop *BM_face_other_vert_loop(BMFace *f, BMVert *v_prev, BMVert *v) ATTR_WARN_UNUSED_RESULT
ATTR_NONNULL();
BMLoop *BM_loop_other_vert_loop_by_edge(BMLoop *l, BMEdge *e) ATTR_WARN_UNUSED_RESULT
ATTR_NONNULL();
BMLoop *BM_loop_other_vert_loop(BMLoop *l, BMVert *v) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
BMLoop *BM_vert_step_fan_loop(BMLoop *l, BMEdge **e_step) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();