forked from bartvdbraak/blender
move less common mesh operations out of bpy_types into bpy_extras.mesh_utils
This commit is contained in:
parent
9af390ab67
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6466673a62
@ -67,3 +67,341 @@ def mesh_linked_faces(mesh):
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# return all face groups that are not null
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# return all face groups that are not null
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# this is all the faces that are connected in their own lists.
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# this is all the faces that are connected in their own lists.
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return [fg for fg in face_groups if fg]
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return [fg for fg in face_groups if fg]
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def edge_face_count_dict(mesh):
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face_edge_keys = [face.edge_keys for face in mesh.faces]
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face_edge_count = {}
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for face_keys in face_edge_keys:
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for key in face_keys:
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try:
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face_edge_count[key] += 1
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except:
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face_edge_count[key] = 1
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return face_edge_count
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def edge_face_count(mesh):
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edge_face_count_dict = edge_face_count_dict(mesh)
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return [edge_face_count_dict.get(ed.key, 0) for ed in mesh.edges]
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def edge_loops_from_faces(mesh, faces=None, seams=()):
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"""
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Edge loops defined by faces
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Takes me.faces or a list of faces and returns the edge loops
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These edge loops are the edges that sit between quads, so they dont touch
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1 quad, note: not connected will make 2 edge loops, both only containing 2 edges.
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return a list of edge key lists
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[ [(0,1), (4, 8), (3,8)], ...]
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return a list of edge vertex index lists
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"""
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OTHER_INDEX = 2, 3, 0, 1 # opposite face index
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if faces is None:
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faces = mesh.faces
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edges = {}
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for f in faces:
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# if len(f) == 4:
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if f.vertices_raw[3] != 0:
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edge_keys = f.edge_keys
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for i, edkey in enumerate(f.edge_keys):
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edges.setdefault(edkey, []).append(edge_keys[OTHER_INDEX[i]])
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for edkey in seams:
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edges[edkey] = []
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# Collect edge loops here
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edge_loops = []
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for edkey, ed_adj in edges.items():
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if 0 < len(ed_adj) < 3: # 1 or 2
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# Seek the first edge
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context_loop = [edkey, ed_adj[0]]
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edge_loops.append(context_loop)
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if len(ed_adj) == 2:
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other_dir = ed_adj[1]
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else:
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other_dir = None
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ed_adj[:] = []
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flipped = False
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while 1:
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# from knowing the last 2, look for th next.
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ed_adj = edges[context_loop[-1]]
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if len(ed_adj) != 2:
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if other_dir and flipped == False: # the original edge had 2 other edges
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flipped = True # only flip the list once
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context_loop.reverse()
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ed_adj[:] = []
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context_loop.append(other_dir) # save 1 lookiup
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ed_adj = edges[context_loop[-1]]
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if len(ed_adj) != 2:
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ed_adj[:] = []
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break
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else:
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ed_adj[:] = []
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break
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i = ed_adj.index(context_loop[-2])
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context_loop.append(ed_adj[not i])
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# Dont look at this again
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ed_adj[:] = []
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return edge_loops
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def edge_loops_from_edges(mesh, edges=None):
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"""
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Edge loops defined by edges
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Takes me.edges or a list of edges and returns the edge loops
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return a list of vertex indices.
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[ [1, 6, 7, 2], ...]
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closed loops have matching start and end values.
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"""
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line_polys = []
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# Get edges not used by a face
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if edges is None:
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edges = mesh.edges
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if not hasattr(edges, "pop"):
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edges = edges[:]
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edge_dict = {ed.key: ed for ed in mesh.edges if ed.select}
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while edges:
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current_edge = edges.pop()
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vert_end, vert_start = current_edge.vertices[:]
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line_poly = [vert_start, vert_end]
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ok = True
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while ok:
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ok = False
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#for i, ed in enumerate(edges):
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i = len(edges)
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while i:
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i -= 1
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ed = edges[i]
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v1, v2 = ed.vertices
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if v1 == vert_end:
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line_poly.append(v2)
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vert_end = line_poly[-1]
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ok = 1
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del edges[i]
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# break
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elif v2 == vert_end:
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line_poly.append(v1)
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vert_end = line_poly[-1]
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ok = 1
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del edges[i]
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#break
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elif v1 == vert_start:
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line_poly.insert(0, v2)
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vert_start = line_poly[0]
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ok = 1
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del edges[i]
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# break
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elif v2 == vert_start:
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line_poly.insert(0, v1)
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vert_start = line_poly[0]
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ok = 1
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del edges[i]
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#break
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line_polys.append(line_poly)
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return line_polys
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def ngon_tessellate(from_data, indices, fix_loops=True):
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'''
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Takes a polyline of indices (fgon)
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and returns a list of face indicie lists.
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Designed to be used for importers that need indices for an fgon to create from existing verts.
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from_data: either a mesh, or a list/tuple of vectors.
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indices: a list of indices to use this list is the ordered closed polyline to fill, and can be a subset of the data given.
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fix_loops: If this is enabled polylines that use loops to make multiple polylines are delt with correctly.
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'''
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from mathutils import Vector
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vector_to_tuple = Vector.to_tuple
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if not indices:
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return []
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def mlen(co):
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return abs(co[0]) + abs(co[1]) + abs(co[2]) # manhatten length of a vector, faster then length
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def vert_treplet(v, i):
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return v, vector_to_tuple(v, 6), i, mlen(v)
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def ed_key_mlen(v1, v2):
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if v1[3] > v2[3]:
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return v2[1], v1[1]
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else:
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return v1[1], v2[1]
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if not PREF_FIX_LOOPS:
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'''
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Normal single concave loop filling
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'''
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if type(from_data) in (tuple, list):
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verts = [Vector(from_data[i]) for ii, i in enumerate(indices)]
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else:
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verts = [from_data.vertices[i].co for ii, i in enumerate(indices)]
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for i in range(len(verts) - 1, 0, -1): # same as reversed(xrange(1, len(verts))):
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if verts[i][1] == verts[i - 1][0]:
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verts.pop(i - 1)
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fill = fill_polygon([verts])
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else:
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'''
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Seperate this loop into multiple loops be finding edges that are used twice
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This is used by lightwave LWO files a lot
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'''
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if type(from_data) in (tuple, list):
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verts = [vert_treplet(Vector(from_data[i]), ii) for ii, i in enumerate(indices)]
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else:
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verts = [vert_treplet(from_data.vertices[i].co, ii) for ii, i in enumerate(indices)]
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edges = [(i, i - 1) for i in range(len(verts))]
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if edges:
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edges[0] = (0, len(verts) - 1)
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if not verts:
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return []
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edges_used = set()
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edges_doubles = set()
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# We need to check if any edges are used twice location based.
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for ed in edges:
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edkey = ed_key_mlen(verts[ed[0]], verts[ed[1]])
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if edkey in edges_used:
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edges_doubles.add(edkey)
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else:
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edges_used.add(edkey)
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# Store a list of unconnected loop segments split by double edges.
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# will join later
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loop_segments = []
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v_prev = verts[0]
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context_loop = [v_prev]
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loop_segments = [context_loop]
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for v in verts:
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if v != v_prev:
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# Are we crossing an edge we removed?
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if ed_key_mlen(v, v_prev) in edges_doubles:
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context_loop = [v]
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loop_segments.append(context_loop)
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else:
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if context_loop and context_loop[-1][1] == v[1]:
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#raise "as"
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pass
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else:
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context_loop.append(v)
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v_prev = v
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# Now join loop segments
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def join_seg(s1, s2):
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if s2[-1][1] == s1[0][1]:
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s1, s2 = s2, s1
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elif s1[-1][1] == s2[0][1]:
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pass
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else:
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return False
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# If were stuill here s1 and s2 are 2 segments in the same polyline
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s1.pop() # remove the last vert from s1
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s1.extend(s2) # add segment 2 to segment 1
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if s1[0][1] == s1[-1][1]: # remove endpoints double
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s1.pop()
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s2[:] = [] # Empty this segment s2 so we dont use it again.
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return True
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joining_segments = True
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while joining_segments:
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joining_segments = False
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segcount = len(loop_segments)
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for j in range(segcount - 1, -1, -1): # reversed(range(segcount)):
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seg_j = loop_segments[j]
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if seg_j:
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for k in range(j - 1, -1, -1): # reversed(range(j)):
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if not seg_j:
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break
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seg_k = loop_segments[k]
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if seg_k and join_seg(seg_j, seg_k):
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joining_segments = True
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loop_list = loop_segments
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for verts in loop_list:
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while verts and verts[0][1] == verts[-1][1]:
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verts.pop()
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loop_list = [verts for verts in loop_list if len(verts) > 2]
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# DONE DEALING WITH LOOP FIXING
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# vert mapping
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vert_map = [None] * len(indices)
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ii = 0
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for verts in loop_list:
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if len(verts) > 2:
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for i, vert in enumerate(verts):
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vert_map[i + ii] = vert[2]
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ii += len(verts)
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fill = tesselate_polygon([[v[0] for v in loop] for loop in loop_list])
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#draw_loops(loop_list)
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#raise 'done loop'
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# map to original indices
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fill = [[vert_map[i] for i in reversed(f)] for f in fill]
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if not fill:
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print('Warning Cannot scanfill, fallback on a triangle fan.')
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fill = [[0, i - 1, i] for i in range(2, len(indices))]
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else:
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# Use real scanfill.
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# See if its flipped the wrong way.
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flip = None
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for fi in fill:
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if flip != None:
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break
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for i, vi in enumerate(fi):
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if vi == 0 and fi[i - 1] == 1:
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flip = False
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break
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elif vi == 1 and fi[i - 1] == 0:
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flip = True
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break
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if not flip:
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for i, fi in enumerate(fill):
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fill[i] = tuple([ii for ii in reversed(fi)])
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return fill
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@ -356,163 +356,6 @@ class Mesh(bpy_types.ID):
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def edge_keys(self):
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def edge_keys(self):
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return [edge_key for face in self.faces for edge_key in face.edge_keys]
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return [edge_key for face in self.faces for edge_key in face.edge_keys]
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@property
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def edge_face_count_dict(self):
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face_edge_keys = [face.edge_keys for face in self.faces]
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face_edge_count = {}
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for face_keys in face_edge_keys:
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for key in face_keys:
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try:
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face_edge_count[key] += 1
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except:
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face_edge_count[key] = 1
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return face_edge_count
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@property
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def edge_face_count(self):
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edge_face_count_dict = self.edge_face_count_dict
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return [edge_face_count_dict.get(ed.key, 0) for ed in self.edges]
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def edge_loops_from_faces(self, faces=None, seams=()):
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"""
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Edge loops defined by faces
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Takes me.faces or a list of faces and returns the edge loops
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These edge loops are the edges that sit between quads, so they dont touch
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1 quad, note: not connected will make 2 edge loops, both only containing 2 edges.
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return a list of edge key lists
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[ [(0,1), (4, 8), (3,8)], ...]
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return a list of edge vertex index lists
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"""
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OTHER_INDEX = 2, 3, 0, 1 # opposite face index
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if faces is None:
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faces = self.faces
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edges = {}
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for f in faces:
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# if len(f) == 4:
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if f.vertices_raw[3] != 0:
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edge_keys = f.edge_keys
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for i, edkey in enumerate(f.edge_keys):
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edges.setdefault(edkey, []).append(edge_keys[OTHER_INDEX[i]])
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for edkey in seams:
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edges[edkey] = []
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# Collect edge loops here
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edge_loops = []
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for edkey, ed_adj in edges.items():
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if 0 < len(ed_adj) < 3: # 1 or 2
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# Seek the first edge
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context_loop = [edkey, ed_adj[0]]
|
|
||||||
edge_loops.append(context_loop)
|
|
||||||
if len(ed_adj) == 2:
|
|
||||||
other_dir = ed_adj[1]
|
|
||||||
else:
|
|
||||||
other_dir = None
|
|
||||||
|
|
||||||
ed_adj[:] = []
|
|
||||||
|
|
||||||
flipped = False
|
|
||||||
|
|
||||||
while 1:
|
|
||||||
# from knowing the last 2, look for th next.
|
|
||||||
ed_adj = edges[context_loop[-1]]
|
|
||||||
if len(ed_adj) != 2:
|
|
||||||
|
|
||||||
if other_dir and flipped == False: # the original edge had 2 other edges
|
|
||||||
flipped = True # only flip the list once
|
|
||||||
context_loop.reverse()
|
|
||||||
ed_adj[:] = []
|
|
||||||
context_loop.append(other_dir) # save 1 lookiup
|
|
||||||
|
|
||||||
ed_adj = edges[context_loop[-1]]
|
|
||||||
if len(ed_adj) != 2:
|
|
||||||
ed_adj[:] = []
|
|
||||||
break
|
|
||||||
else:
|
|
||||||
ed_adj[:] = []
|
|
||||||
break
|
|
||||||
|
|
||||||
i = ed_adj.index(context_loop[-2])
|
|
||||||
context_loop.append(ed_adj[not i])
|
|
||||||
|
|
||||||
# Dont look at this again
|
|
||||||
ed_adj[:] = []
|
|
||||||
|
|
||||||
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 = {ed.key: ed for ed in self.edges if ed.select}
|
|
||||||
|
|
||||||
while edges:
|
|
||||||
current_edge = edges.pop()
|
|
||||||
vert_end, vert_start = current_edge.vertices[:]
|
|
||||||
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.vertices
|
|
||||||
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):
|
class MeshEdge(StructRNA):
|
||||||
__slots__ = ()
|
__slots__ = ()
|
||||||
|
@ -36,6 +36,7 @@ class MeshSelectInteriorFaces(bpy.types.Operator):
|
|||||||
return (ob and ob.type == 'MESH')
|
return (ob and ob.type == 'MESH')
|
||||||
|
|
||||||
def execute(self, context):
|
def execute(self, context):
|
||||||
|
from bpy_extras import mesh_utils
|
||||||
ob = context.active_object
|
ob = context.active_object
|
||||||
context.tool_settings.mesh_select_mode = False, False, True
|
context.tool_settings.mesh_select_mode = False, False, True
|
||||||
is_editmode = (ob.mode == 'EDIT')
|
is_editmode = (ob.mode == 'EDIT')
|
||||||
@ -47,7 +48,7 @@ class MeshSelectInteriorFaces(bpy.types.Operator):
|
|||||||
face_list = mesh.faces[:]
|
face_list = mesh.faces[:]
|
||||||
face_edge_keys = [face.edge_keys for face in face_list]
|
face_edge_keys = [face.edge_keys for face in face_list]
|
||||||
|
|
||||||
edge_face_count = mesh.edge_face_count_dict
|
edge_face_count = mesh_utils.edge_face_count_dict(mesh)
|
||||||
|
|
||||||
def test_interior(index):
|
def test_interior(index):
|
||||||
for key in face_edge_keys[index]:
|
for key in face_edge_keys[index]:
|
||||||
|
@ -25,6 +25,8 @@ import bpy
|
|||||||
|
|
||||||
|
|
||||||
def extend(obj, operator, EXTEND_MODE):
|
def extend(obj, operator, EXTEND_MODE):
|
||||||
|
from bpy_extras import mesh_utils
|
||||||
|
|
||||||
me = obj.data
|
me = obj.data
|
||||||
me_verts = me.vertices
|
me_verts = me.vertices
|
||||||
# script will fail without UVs
|
# script will fail without UVs
|
||||||
@ -170,7 +172,7 @@ def extend(obj, operator, EXTEND_MODE):
|
|||||||
edge_faces[edkey] = [i]
|
edge_faces[edkey] = [i]
|
||||||
|
|
||||||
if EXTEND_MODE == 'LENGTH':
|
if EXTEND_MODE == 'LENGTH':
|
||||||
edge_loops = me.edge_loops_from_faces(face_sel, [ed.key for ed in me.edges if ed.use_seam])
|
edge_loops = mesh_utils.edge_loops_from_faces(me, face_sel, [ed.key for ed in me.edges if ed.use_seam])
|
||||||
me_verts = me.vertices
|
me_verts = me.vertices
|
||||||
for loop in edge_loops:
|
for loop in edge_loops:
|
||||||
looplen = [0.0]
|
looplen = [0.0]
|
||||||
|
Loading…
Reference in New Issue
Block a user