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BMesh: utility for checking shared edge with limit argument

This commit is contained in:
Campbell Barton 2020-07-18 15:54:04 +10:00
parent 4e73ba2cab
commit c48ccb38cb
2 changed files with 31 additions and 0 deletions
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25
source/blender/bmesh/intern/bmesh_query_uv.c
View File

@ -32,6 +32,11 @@
#include "bmesh.h"
#include "intern/bmesh_private.h"
static bool compare_v2v2_v2(const float v1[2], const float v2[2], const float limit[2])
{
return (compare_ff(v1[0], v2[0], limit[0]) && compare_ff(v1[1], v2[1], limit[1]));
}
static void uv_aspect(const BMLoop *l,
const float aspect[2],
const int cd_loop_uv_offset,
@ -112,6 +117,26 @@ float BM_face_uv_calc_cross(const BMFace *f, const int cd_loop_uv_offset)
return cross_poly_v2(uvs, f->len);
}
/**
* Check if two loops that share an edge also have the same UV coordinates.
*/
bool BM_loop_uv_share_edge_check_with_limit(BMLoop *l_a,
BMLoop *l_b,
const float limit[2],
const int cd_loop_uv_offset)
{
BLI_assert(l_a->e == l_b->e);
MLoopUV *luv_a_curr = BM_ELEM_CD_GET_VOID_P(l_a, cd_loop_uv_offset);
MLoopUV *luv_a_next = BM_ELEM_CD_GET_VOID_P(l_a->next, cd_loop_uv_offset);
MLoopUV *luv_b_curr = BM_ELEM_CD_GET_VOID_P(l_b, cd_loop_uv_offset);
MLoopUV *luv_b_next = BM_ELEM_CD_GET_VOID_P(l_b->next, cd_loop_uv_offset);
if (l_a->v != l_b->v) {
SWAP(MLoopUV *, luv_b_curr, luv_b_next);
}
return (compare_v2v2_v2(luv_a_curr->uv, luv_b_curr->uv, limit) &&
compare_v2v2_v2(luv_a_next->uv, luv_b_next->uv, limit));
}
/**
* Check if two loops that share an edge also have the same UV coordinates.
*/

6
source/blender/bmesh/intern/bmesh_query_uv.h
View File

@ -36,6 +36,12 @@ void BM_face_uv_calc_center_median_weighted(const BMFace *f,
float BM_face_uv_calc_cross(const BMFace *f, const int cd_loop_uv_offset) ATTR_WARN_UNUSED_RESULT
ATTR_NONNULL();
bool BM_loop_uv_share_edge_check_with_limit(BMLoop *l_a,
BMLoop *l_b,
const float limit[2],
const int cd_loop_uv_offset) ATTR_WARN_UNUSED_RESULT
ATTR_NONNULL();
bool BM_loop_uv_share_edge_check(BMLoop *l_a,
BMLoop *l_b,
const int cd_loop_uv_offset) ATTR_WARN_UNUSED_RESULT