[Bf-blender-cvs] [8bd5d58860f] blender-v2.92-release: BMesh: add function to check if a point is inside a faces UV's
Campbell Barton
noreply at git.blender.org
Wed Jan 20 07:08:29 CET 2021
Commit: 8bd5d58860fa43c9eaad2c25a0f03cb4d6f20226
Author: Campbell Barton
Date: Wed Jan 20 16:56:59 2021 +1100
Branches: blender-v2.92-release
https://developer.blender.org/rB8bd5d58860fa43c9eaad2c25a0f03cb4d6f20226
BMesh: add function to check if a point is inside a faces UV's
===================================================================
M source/blender/bmesh/intern/bmesh_query_uv.c
M source/blender/bmesh/intern/bmesh_query_uv.h
===================================================================
diff --git a/source/blender/bmesh/intern/bmesh_query_uv.c b/source/blender/bmesh/intern/bmesh_query_uv.c
index d3067109d4e..f9b87e4e71c 100644
--- a/source/blender/bmesh/intern/bmesh_query_uv.c
+++ b/source/blender/bmesh/intern/bmesh_query_uv.c
@@ -203,3 +203,22 @@ bool BM_edge_uv_share_vert_check(BMEdge *e, BMLoop *l_a, BMLoop *l_b, const int
return true;
}
+
+/**
+ * Check if the point is inside the UV face.
+ */
+bool BM_face_uv_point_inside_test(const BMFace *f, const float co[2], const int cd_loop_uv_offset)
+{
+ float(*projverts)[2] = BLI_array_alloca(projverts, f->len);
+
+ BMLoop *l_iter;
+ int i;
+
+ BLI_assert(BM_face_is_normal_valid(f));
+
+ for (i = 0, l_iter = BM_FACE_FIRST_LOOP(f); i < f->len; i++, l_iter = l_iter->next) {
+ copy_v2_v2(projverts[i], BM_ELEM_CD_GET_VOID_P(l_iter, cd_loop_uv_offset));
+ }
+
+ return isect_point_poly_v2(co, projverts, f->len, false);
+}
diff --git a/source/blender/bmesh/intern/bmesh_query_uv.h b/source/blender/bmesh/intern/bmesh_query_uv.h
index fe62c5a8809..850b27d3894 100644
--- a/source/blender/bmesh/intern/bmesh_query_uv.h
+++ b/source/blender/bmesh/intern/bmesh_query_uv.h
@@ -58,3 +58,8 @@ bool BM_loop_uv_share_vert_check(BMLoop *l_a,
BMLoop *l_b,
const int cd_loop_uv_offset) ATTR_WARN_UNUSED_RESULT
ATTR_NONNULL();
+
+bool BM_face_uv_point_inside_test(const BMFace *f,
+ const float co[2],
+ const int cd_loop_uv_offset) ATTR_WARN_UNUSED_RESULT
+ ATTR_NONNULL();
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