patch [#34890] BMesh Poke Face.

by Francisco De La Cruz (xercesblue), with some of my own changes/improvements.

Converts faces to triangle-fans (useful to run on ngons).

To access select a group of faces and press "Alt+P" or alternatively select the operator from the Faces menu (Ctrl+F)

3 files changed, 31 insertions, 0 deletions

diff --git a/source/blender/bmesh/intern/bmesh_opdefines.c b/source/blender/bmesh/intern/bmesh_opdefines.c
index c76bf15022c..83f57baea18 100644
--- a/source/blender/bmesh/intern/bmesh_opdefines.c
+++ b/source/blender/bmesh/intern/bmesh_opdefines.c
@@ -1571,6 +1571,28 @@ static BMOpDefine bmo_wireframe_def = {
 	0
 };
 
+/*
+ * Pokes a face.
+ *
+ * Splits a face into a triangle fan.
+ */
+static BMOpDefine bmo_poke_def = {
+	"poke",
+	/* slots_in */
+	{{"faces", BMO_OP_SLOT_ELEMENT_BUF, {BM_FACE}},   /* input faces */
+	 {"offset", BMO_OP_SLOT_FLT}, /* center vertex offset along normal */
+	{"center_mode", BMO_OP_SLOT_INT}, /* calculation mode for center vertex */
+	 {{'\0'}},
+	},
+	/* slots_out */
+	{{"verts.out", BMO_OP_SLOT_ELEMENT_BUF, {BM_VERT}}, /* output verts */
+	 {"faces.out", BMO_OP_SLOT_ELEMENT_BUF, {BM_FACE}}, /* output faces */
+	 {{'\0'}},
+	},
+	bmo_poke_exec,
+	0
+};
+
 #ifdef WITH_BULLET
 /*
  * Convex Hull
@@ -1677,6 +1699,7 @@ const BMOpDefine *bmo_opdefines[] = {
 	&bmo_object_load_bmesh_def,
 	&bmo_pointmerge_def,
 	&bmo_pointmerge_facedata_def,
+	&bmo_poke_def,
 	&bmo_recalc_face_normals_def,
 	&bmo_region_extend_def,
 	&bmo_remove_doubles_def,
diff --git a/source/blender/bmesh/intern/bmesh_operators.h b/source/blender/bmesh/intern/bmesh_operators.h
index d02b0dce728..2063ab49169 100644
--- a/source/blender/bmesh/intern/bmesh_operators.h
+++ b/source/blender/bmesh/intern/bmesh_operators.h
@@ -89,6 +89,13 @@ enum {
 	VPATH_SELECT_TOPOLOGICAL
 };
 
+/* Poke face center calculation */
+enum {
+	BMOP_POKE_MEAN_WEIGHTED = 0,
+	BMOP_POKE_MEAN,
+	BMOP_POKE_BOUNDS
+};
+
 extern const BMOpDefine *bmo_opdefines[];
 extern const int         bmo_opdefines_total;
 
diff --git a/source/blender/bmesh/intern/bmesh_operators_private.h b/source/blender/bmesh/intern/bmesh_operators_private.h
index 6f9628bc468..2a67407b261 100644
--- a/source/blender/bmesh/intern/bmesh_operators_private.h
+++ b/source/blender/bmesh/intern/bmesh_operators_private.h
@@ -74,6 +74,7 @@ void bmo_object_load_bmesh_exec(BMesh *bm, BMOperator *op);
 void bmo_pointmerge_exec(BMesh *bm, BMOperator *op);
 void bmo_pointmerge_facedata_exec(BMesh *bm, BMOperator *op);
 void bmo_recalc_face_normals_exec(BMesh *bm, BMOperator *op);
+void bmo_poke_exec(BMesh *bm, BMOperator *op);
 void bmo_region_extend_exec(BMesh *bm, BMOperator *op);
 void bmo_remove_doubles_exec(BMesh *bm, BMOperator *op);
 void bmo_reverse_colors_exec(BMesh *bm, BMOperator *op);