[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [28956] trunk/blender/release/scripts: utility function for mesh data types
Campbell Barton
ideasman42 at gmail.com
Mon May 24 14:18:13 CEST 2010
Revision: 28956
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=28956
Author: campbellbarton
Date: 2010-05-24 14:18:12 +0200 (Mon, 24 May 2010)
Log Message:
-----------
utility function for mesh data types
mesh.edge_loops_from_edges(edges=None)
Lets you get edge loops from python either from the entire mesh or from by passing an edge list.
Modified Paths:
--------------
trunk/blender/release/scripts/modules/bpy_types.py
trunk/blender/release/scripts/op/uvcalc_follow_active.py
Modified: trunk/blender/release/scripts/modules/bpy_types.py
===================================================================
--- trunk/blender/release/scripts/modules/bpy_types.py 2010-05-24 12:15:37 UTC (rev 28955)
+++ trunk/blender/release/scripts/modules/bpy_types.py 2010-05-24 12:18:12 UTC (rev 28956)
@@ -303,7 +303,7 @@
edge_face_count_dict = self.edge_face_count_dict
return [edge_face_count_dict.get(ed.key, 0) for ed in self.edges]
- def edge_loops(self, faces=None, seams=()):
+ def edge_loops_from_faces(self, faces=None, seams=()):
"""
Edge loops defined by faces
@@ -314,7 +314,7 @@
return a list of edge key lists
[ [(0,1), (4, 8), (3,8)], ...]
- optionaly, seams are edge keys that will be removed
+ return a list of edge vertex index lists
"""
OTHER_INDEX = 2, 3, 0, 1 # opposite face index
@@ -379,7 +379,72 @@
return edge_loops
+ def edge_loops_from_edges(self, edges=None):
+ """
+ Edge loops defined by edges
+ Takes me.edges or a list of edges and returns the edge loops
+
+ return a list of vertex indices.
+ [ [1, 6, 7, 2], ...]
+
+ closed loops have matching start and end values.
+ """
+ line_polys = []
+
+ # Get edges not used by a face
+ if edges is None:
+ edges = self.edges
+
+ if not hasattr(edges, "pop"):
+ edges = edges[:]
+
+ edge_dict= dict((ed.key, ed) for ed in self.edges if ed.selected)
+
+ while edges:
+ current_edge= edges.pop()
+ vert_end, vert_start = current_edge.verts[:]
+ line_poly = [vert_start, vert_end]
+
+ ok = True
+ while ok:
+ ok = False
+ #for i, ed in enumerate(edges):
+ i = len(edges)
+ while i:
+ i -= 1
+ ed = edges[i]
+ v1, v2 = ed.verts
+ if v1 == vert_end:
+ line_poly.append(v2)
+ vert_end = line_poly[-1]
+ ok = 1
+ del edges[i]
+ #break
+ elif v2 == vert_end:
+ line_poly.append(v1)
+ vert_end = line_poly[-1]
+ ok = 1
+ del edges[i]
+ #break
+ elif v1 == vert_start:
+ line_poly.insert(0, v2)
+ vert_start = line_poly[0]
+ ok = 1
+ del edges[i]
+ #break
+ elif v2 == vert_start:
+ line_poly.insert(0, v1)
+ vert_start = line_poly[0]
+ ok = 1
+ del edges[i]
+ #break
+ line_polys.append(line_poly)
+
+ return line_polys
+
+
+
class MeshEdge(StructRNA):
__slots__ = ()
Modified: trunk/blender/release/scripts/op/uvcalc_follow_active.py
===================================================================
--- trunk/blender/release/scripts/op/uvcalc_follow_active.py 2010-05-24 12:15:37 UTC (rev 28955)
+++ trunk/blender/release/scripts/op/uvcalc_follow_active.py 2010-05-24 12:18:12 UTC (rev 28956)
@@ -180,7 +180,7 @@
#SEAM = me.edges.seam
if EXTEND_MODE == 'LENGTH':
- edge_loops = me.edge_loops(face_sel, [ed.key for ed in me.edges if ed.seam])
+ edge_loops = me.edge_loops_from_faces(face_sel, [ed.key for ed in me.edges if ed.seam])
me_verts = me.verts
for loop in edge_loops:
looplen = [0.0]
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