nothing
This commit is contained in:
William Blattman
parent
a4d9129d77
commit
9a37d67ae7
BIN
surf/__init__.pyc
Executable file
BIN
surf/__init__.pyc
Executable file
Binary file not shown.
181
surf/geometry.py
181
surf/geometry.py
@ -24,13 +24,13 @@ def cross(a, b):
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k = a.x * b.y - a.y * b.x
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return Vertex(i, j, k)
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class Vertex(object):
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'''
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A vertex is a position along with other information such as color, normal
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vector and texture coordinates.
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'''
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def __init__(self, x=0, y=0, z=0):
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def __init__(self, polygon, x=0, y=0, z=0):
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self.polygon = polygon
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self.x = x
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self.y = y
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self.z = z
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@ -73,187 +73,42 @@ class Vertex(object):
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def __neg__(self):
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return Vertex(-self.x, -self.y, -self.z)
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class Edge(object):
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'''
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'''
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def __init__(self):
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def __init__(self, polygon):
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self.polygon = polygon
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self.vertices = []
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self.faces = []
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self.edges = []
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self.__edge_vertex = None
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self.__sub_edges = []
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def neighborFace(self, neighborFace):
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'''Get neighboring face id
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'''
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if neighborFace == self.faces[0]:
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return self.faces[1]
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else:
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return self.faces[0]
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@property
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def mid_point(self):
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return sum(self.vertices, Vertex()) / len(self.vertices)
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@property
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def sub_edges(self):
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if not self.__sub_edges:
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self.__sub_edges = [Edge(), Edge()]
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self.__sub_edges[0].vertices = [self.vertices[0], self.edge_vertex]
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self.__sub_edges[1].vertices = [self.edge_vertex, self.vertices[1]]
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return self.__sub_edges
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@property
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def edge_vertex(self):
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'''
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Set each edge vertices to be the average of the two neighboring
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face vertices and its two original end vertices.
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'''
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if not self.__edge_vertex:
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# two neighboring face vertices:
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neighboringFaceVertices = [face.centroid for face in self.faces]
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neighboringFaceVertices.extend(self.vertices)
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xs = [vertex.x for vertex in neighboringFaceVertices]
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ys = [vertex.y for vertex in neighboringFaceVertices]
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zs = [vertex.z for vertex in neighboringFaceVertices]
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x = sum(xs) / len(xs)
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y = sum(ys) / len(ys)
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z = sum(zs) / len(zs)
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self.__edge_vertex = Vertex(x, y, z)
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self.__edge_vertex.edges.extend(self.__sub_edges)
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return self.__edge_vertex
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def __averageVertices(self, vertices):
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return
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class Face(object):
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'''
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A face is a closed set of edges, in which a triangle face has three edges,
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and a quad face has four edges.
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'''
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def __init__(self):
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def __init__(self, polygon):
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self.polygon = polygon
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self.edges = []
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self.__centroid = None
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self.__interior_edges = []
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self.__sub_faces = []
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@property
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def centroid(self):
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if not self.__centroid:
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# gather all face vertex coords
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face_vertices = list(set([vertex
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for edge in self.edges for vertex in edge.vertices]))
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xs = [vertex.x for vertex in face_vertices]
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ys = [vertex.y for vertex in face_vertices]
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zs = [vertex.z for vertex in face_vertices]
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# average each vertex component
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x = sum(xs) / len(xs)
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y = sum(ys) / len(ys)
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z = sum(zs) / len(zs)
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self.__centroid = Vertex(x, y, z)
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return self.__centroid
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@property
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def sub_faces(self):
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self.__setupSubDivisions()
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return self.__sub_faces
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@property
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def interior_edges(self):
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self.__setupSubDivisions()
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return self.__interior_edges
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def __setupSubDivisions(self):
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'''
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v0 ev0 v1
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*------e0-----*
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| | |
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ev3 e|11----f5----e|1 ev1
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*------e2-----*
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v3 ev2 v2
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'''
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if not self.__sub_faces:
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# create empty sub_faces that will be filled with edge references
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# below
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# these need to at least exist so the interior edges have
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# something to reference
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self.__sub_faces = [Face() for edge in self.edges]
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if not self.__interior_edges:
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# set up empty edge objects to be filled below
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self.__interior_edges = [Edge() for edge in self.edges]
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# each interior edge connects the exterior edge vertex (mid-point)
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# to the faceVertex (centroid)
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for index in range(len(self.edges)):
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prevIndex = (index - 1) % len(self.edges)
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nextIndex = (index + 1) % len(self.edges)
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# end vertices are face centroid and currEdge edge_vertex
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self.__interior_edges[index].vertices = [
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self.edges[index].edge_vertex, self.centroid
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]
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# wing edges are the current edge's sub_edges (ordered same as
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# vertex order) and the prev and next interior edges
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self.__interior_edges[index].edges = [
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self.edges[index].sub_edges[0],
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self.edges[index].sub_edges[1],
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self.__interior_edges[prevIndex],
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self.__interior_edges[nextIndex]
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]
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# edge faces are the new sub_faces (current and next faces), the
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# current will be define below
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# and the next will be defined on the next iteration (or
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# already defined on the last iteration)
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self.__interior_edges[index].faces = [
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self.__sub_faces[index],
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self.__sub_faces[nextIndex]
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]
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# now reference the current edge back into the faces,
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# and the edge.sub_edges, and the edge.edge_vertex
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# current subFace (same index as current interior edge)
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# set its edges to reference the same edges used to setup the
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# interior edge
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# order will be pretty important on these steps...
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self.__sub_faces[index].edges = [
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self.edges[index].sub_edges[0],
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self.__interior_edges[index],
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self.__interior_edges[prevIndex],
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self.edges[prevIndex].sub_edges[1]
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]
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# just set one of the vertex edges, the other belongs to
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# another face and will get added when that face is run
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self.edges[index].edge_vertex.edges.append(
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self.__interior_edges[index])
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self.edges[index].sub_edges[0].faces.append(
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self.__sub_faces[index])
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self.edges[index].sub_edges[0].faces.append(
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self.__sub_faces[index])
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class Polygon(object):
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'''
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Face splitting should happend on the polygon level(?). It doesn't make
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sense to split just one face since it needs to average vertices with all
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adjoinging faces
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'''
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def __init__(self, v=None, e=None, f=None):
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self.vertices = v or []
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self.edges = e or []
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self.faces = f or []
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def __init__(self, vs=None, es=None, fs=None):
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self.vertices = vs or []
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self.edges = es or []
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self.faces = fs or []
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def __unicode__(self):
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d = {
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'vertices': self.vertices,
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@ -261,6 +116,6 @@ class Polygon(object):
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'faces': self.faces,
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}
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return pprint.pformat(d)
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__str__ = __unicode__
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__repr__ = __unicode__
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__repr__ = __unicode__
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BIN
surf/geometry.pyc
Executable file
BIN
surf/geometry.pyc
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Binary file not shown.
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surf/subd/__init__.pyc
Executable file
BIN
surf/subd/__init__.pyc
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130
surf/subd/cc.py
130
surf/subd/cc.py
@ -1,5 +1,135 @@
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from surf.geometry import Vertex, Polygon
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def mid_point(self):
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vertex_objs = [self.polygon.vertices[v_id] for v_id in self.vertices]
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return sum(vertex_objs, Vertex()) / len(self.vertices)
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def sub_edges(self):
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temp_p = Polygon()
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temp_p.edges = [Edge(), Edge()]
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temp_p.vertices =
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sub_edges[0].vertices = [self.vertices[0], self.edge_vertex]
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sub_edges[1].vertices = [self.edge_vertex, self.vertices[1]]
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return self.__sub_edges
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def edge_vertex(self):
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'''
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Set each edge vertices to be the average of the two neighboring
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face vertices and its two original end vertices.
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'''
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# two neighboring face vertices:
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neighboringFaceVertices = [p.faces[f_id].centroid for f_id in self.faces]
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neighboringFaceVertices.extend(self.vertices)
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xs = [vertex.x for vertex in neighboringFaceVertices]
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ys = [vertex.y for vertex in neighboringFaceVertices]
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zs = [vertex.z for vertex in neighboringFaceVertices]
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x = sum(xs) / len(xs)
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y = sum(ys) / len(ys)
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z = sum(zs) / len(zs)
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self.__edge_vertex = Vertex(x, y, z)
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self.__edge_vertex.edges.extend(self.__sub_edges)
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return self.__edge_vertex
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def centroid(self):
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if not self.__centroid:
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# gather all face vertex coords
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face_vertices = list(set([vertex
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for edge in self.edges for vertex in edge.vertices]))
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xs = [vertex.x for vertex in face_vertices]
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ys = [vertex.y for vertex in face_vertices]
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zs = [vertex.z for vertex in face_vertices]
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# average each vertex component
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x = sum(xs) / len(xs)
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y = sum(ys) / len(ys)
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z = sum(zs) / len(zs)
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self.__centroid = Vertex(x, y, z)
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return self.__centroid
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def sub_faces(self):
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self.__setupSubDivisions()
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return self.__sub_faces
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def interior_edges(self):
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self.__setupSubDivisions()
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return self.__interior_edges
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def __setupSubDivisions(self):
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'''
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v0 ev0 v1
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*------e0-----*
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ev3 e|11----f5----e|1 ev1
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*------e2-----*
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v3 ev2 v2
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'''
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if not self.__sub_faces:
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# create empty sub_faces that will be filled with edge references
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# below
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# these need to at least exist so the interior edges have
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# something to reference
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self.__sub_faces = [Face() for edge in self.edges]
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if not self.__interior_edges:
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# set up empty edge objects to be filled below
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self.__interior_edges = [Edge() for edge in self.edges]
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# each interior edge connects the exterior edge vertex (mid-point)
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# to the faceVertex (centroid)
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for index in range(len(self.edges)):
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prevIndex = (index - 1) % len(self.edges)
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nextIndex = (index + 1) % len(self.edges)
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# end vertices are face centroid and currEdge edge_vertex
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self.__interior_edges[index].vertices = [
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self.edges[index].edge_vertex, self.centroid
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]
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# wing edges are the current edge's sub_edges (ordered same as
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# vertex order) and the prev and next interior edges
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self.__interior_edges[index].edges = [
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self.edges[index].sub_edges[0],
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self.edges[index].sub_edges[1],
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self.__interior_edges[prevIndex],
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self.__interior_edges[nextIndex]
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]
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# edge faces are the new sub_faces (current and next faces), the
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# current will be define below
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# and the next will be defined on the next iteration (or
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# already defined on the last iteration)
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self.__interior_edges[index].faces = [
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self.__sub_faces[index],
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self.__sub_faces[nextIndex]
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]
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# now reference the current edge back into the faces,
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# and the edge.sub_edges, and the edge.edge_vertex
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# current subFace (same index as current interior edge)
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# set its edges to reference the same edges used to setup the
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# interior edge
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# order will be pretty important on these steps...
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self.__sub_faces[index].edges = [
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self.edges[index].sub_edges[0],
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self.__interior_edges[index],
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self.__interior_edges[prevIndex],
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self.edges[prevIndex].sub_edges[1]
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]
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# just set one of the vertex edges, the other belongs to
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# another face and will get added when that face is run
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self.edges[index].edge_vertex.edges.append(
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self.__interior_edges[index])
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self.edges[index].sub_edges[0].faces.append(
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self.__sub_faces[index])
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self.edges[index].sub_edges[0].faces.append(
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self.__sub_faces[index])
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def refine(poly):
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'''
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171
surf/util.py
171
surf/util.py
@ -1,4 +1,4 @@
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from surf.geometry import Vertex, Edge, Face, Polygon
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from geometry import Vertex, Edge, Face, Polygon
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def cube():
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@ -75,85 +75,110 @@ def cube():
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v6 - e2, e9, e10
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v7 - e7, e10, e11
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"""
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p = Polygon()
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p.vertices.append(Vertex(p, 1.0, 1.0, 0.0))
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p.vertices.append(Vertex(p, 1.0, 0.0, 0.0))
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p.vertices.append(Vertex(p, 0.0, 1.0, 0.0))
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p.vertices.append(Vertex(p, 0.0, 0.0, 0.0))
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p.vertices.append(Vertex(p, 0.0, 1.0, 1.0))
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p.vertices.append(Vertex(p, 1.0, 1.0, 1.0))
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p.vertices.append(Vertex(p, 1.0, 0.0, 1.0))
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p.vertices.append(Vertex(p, 0.0, 0.0, 1.0))
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v = []
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v.append(Vertex(0.0, 1.0, 0.0))
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v.append(Vertex(1.0, 1.0, 0.0))
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v.append(Vertex(1.0, 0.0, 0.0))
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v.append(Vertex(0.0, 0.0, 0.0))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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p.edges.append(Edge(p))
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v.append(Vertex(0.0, 1.0, 1.0))
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v.append(Vertex(1.0, 1.0, 1.0))
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v.append(Vertex(1.0, 0.0, 1.0))
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v.append(Vertex(0.0, 0.0, 1.0))
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p.faces.append(Face(p))
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p.faces.append(Face(p))
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p.faces.append(Face(p))
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p.faces.append(Face(p))
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p.faces.append(Face(p))
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p.faces.append(Face(p))
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e = []
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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e.append(Edge())
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f = []
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f.append(Face())
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f.append(Face())
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f.append(Face())
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f.append(Face())
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f.append(Face())
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f.append(Face())
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# vertex list
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v[0].edges = [e[0], e[3], e[4]]
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v[1].edges = [e[0], e[5], e[1]]
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v[2].edges = [e[1], e[6], e[2]]
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v[3].edges = [e[2], e[7], e[3]]
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v[4].edges = [e[4], e[11], e[8]]
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v[5].edges = [e[5], e[9], e[8]]
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v[6].edges = [e[6], e[9], e[10]]
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v[7].edges = [e[7], e[10], e[11]]
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p.vertices[0].edges = [0, 3, 4]
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p.vertices[1].edges = [0, 5, 1]
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p.vertices[2].edges = [1, 6, 2]
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p.vertices[3].edges = [2, 7, 3]
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p.vertices[4].edges = [4, 11, 8]
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p.vertices[5].edges = [5, 9, 8]
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p.vertices[6].edges = [6, 9, 10]
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p.vertices[7].edges = [7, 10, 11]
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# face list
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f[0].edges = [e[0], e[1], e[2], e[3]]
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f[1].edges = [e[1], e[5], e[9], e[6]]
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f[2].edges = [e[2], e[6], e[10], e[7]]
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f[3].edges = [e[4], e[3], e[7], e[11]]
|
||||
f[4].edges = [e[8], e[5], e[0], e[4]]
|
||||
f[5].edges = [e[10], e[9], e[8], e[11]]
|
||||
p.faces[0].edges = [0, 1, 2, 3]
|
||||
p.faces[1].edges = [1, 5, 9, 6]
|
||||
p.faces[2].edges = [2, 6, 10, 7]
|
||||
p.faces[3].edges = [4, 3, 7, 11]
|
||||
p.faces[4].edges = [8, 5, 0, 4]
|
||||
p.faces[5].edges = [10, 9, 8, 11]
|
||||
|
||||
#winged edges ordered by face, then by vertex reference
|
||||
e[0].vertices, e[0].faces, e[0].edges = [v[0], v[1]], [f[0], f[4]], [e[3], e[1], e[4], e[5]]
|
||||
e[1].vertices, e[1].faces, e[1].edges = [v[1], v[2]], [f[0], f[1]], [e[0], e[2], e[5], e[6]]
|
||||
e[2].vertices, e[2].faces, e[2].edges = [v[2], v[3]], [f[0], f[2]], [e[1], e[3], e[6], e[7]]
|
||||
e[3].vertices, e[3].faces, e[3].edges = [v[3], v[0]], [f[3], f[0]], [e[4], e[7], e[0], e[2]]
|
||||
e[4].vertices, e[4].faces, e[4].edges = [v[0], v[4]], [f[3], f[4]], [e[11], e[3], e[0], e[8]]
|
||||
e[5].vertices, e[5].faces, e[5].edges = [v[5], v[1]], [f[4], f[1]], [e[8], e[0], e[9], e[1]]
|
||||
e[6].vertices, e[6].faces, e[6].edges = [v[2], v[6]], [f[1], f[2]], [e[1], e[9], e[2], e[10]]
|
||||
e[7].vertices, e[7].faces, e[7].edges = [v[7], v[3]], [f[3], f[2]], [e[11], e[3], e[10], e[2]]
|
||||
e[8].vertices, e[8].faces, e[8].edges = [v[4], v[5]], [f[4], f[5]], [e[4], e[5], e[11], e[9]]
|
||||
e[9].vertices, e[9].faces, e[9].edges = [v[5], v[6]], [f[1], f[5]], [e[5], e[6], e[8], e[10]]
|
||||
e[10].vertices, e[10].faces, e[10].edges = [v[7], v[6]], [f[2], f[5]], [e[7], e[6], e[11], e[9]]
|
||||
e[11].vertices, e[11].faces, e[11].edges = [v[4], v[7]], [f[3], f[5]], [e[4], e[7], e[8], e[10]]
|
||||
p.edges[0].vertices = [0, 1]
|
||||
p.edges[1].vertices = [1, 2]
|
||||
p.edges[2].vertices = [2, 3]
|
||||
p.edges[3].vertices = [3, 0]
|
||||
p.edges[4].vertices = [0, 4]
|
||||
p.edges[5].vertices = [5, 1]
|
||||
p.edges[6].vertices = [2, 6]
|
||||
p.edges[7].vertices = [7, 3]
|
||||
p.edges[8].vertices = [4, 5]
|
||||
p.edges[9].vertices = [5, 6]
|
||||
p.edges[10].vertices = [7, 6]
|
||||
p.edges[11].vertices = [4, 7]
|
||||
p.edges[0].edges = [3, 1, 4, 5]
|
||||
p.edges[1].edges = [0, 2, 5, 6]
|
||||
p.edges[2].edges = [1, 3, 6, 7]
|
||||
p.edges[3].edges = [4, 7, 0, 2]
|
||||
p.edges[4].edges = [11, 3, 0, 8]
|
||||
p.edges[5].edges = [8, 0, 9, 1]
|
||||
p.edges[6].edges = [1, 9, 2, 10]
|
||||
p.edges[7].edges = [11, 3, 10, 2]
|
||||
p.edges[8].edges = [4, 5, 11, 9]
|
||||
p.edges[9].edges = [5, 6, 8, 10]
|
||||
p.edges[10].edges = [7, 6, 11, 9]
|
||||
p.edges[11].edges = [4, 7, 8, 10]
|
||||
p.edges[0].faces = [0, 4]
|
||||
p.edges[1].faces = [0, 1]
|
||||
p.edges[2].faces = [0, 2]
|
||||
p.edges[3].faces = [3, 0]
|
||||
p.edges[4].faces = [3, 4]
|
||||
p.edges[5].faces = [4, 1]
|
||||
p.edges[6].faces = [1, 2]
|
||||
p.edges[7].faces = [3, 2]
|
||||
p.edges[8].faces = [4, 5]
|
||||
p.edges[9].faces = [1, 5]
|
||||
p.edges[10].faces = [2, 5]
|
||||
p.edges[11].faces = [3, 5]
|
||||
|
||||
# just to prove to myself that the objects are the same, this is what years of pass by value have done to me...
|
||||
# Polygon stores all the actual data.
|
||||
# Every other class only stores indices to
|
||||
# the original data. This could be slightly
|
||||
# dangerous if any items get appended to the
|
||||
# list of objects or the indices get changed.
|
||||
|
||||
|
||||
# These are all the same vertex, just testing to make
|
||||
# sure I did it right.
|
||||
print p.vertices[1].x
|
||||
|
||||
edge_v_id = p.edges[1].vertices[0]
|
||||
print p.vertices[edge_v_id].x
|
||||
|
||||
face_edge_id = p.faces[0].edges[1]
|
||||
edge_v_id = p.edges[face_edge_id].vertices[0]
|
||||
print p.vertices[edge_v_id].x
|
||||
|
||||
# print id(v[0].x)
|
||||
# print id(e[0].vertices[0].x)
|
||||
# print id(f[0].edges[0].vertices[0].x)
|
||||
return p
|
||||
|
||||
# v[0].x = 9
|
||||
|
||||
# print id(v[0].x)
|
||||
# print id(e[0].vertices[0].x)
|
||||
# print id(f[0].edges[0].vertices[0].x)
|
||||
|
||||
# print v[0].x
|
||||
# print e[0].vertices[0].x
|
||||
# print f[0].edges[0].vertices[0].x
|
||||
return Polygon(v, e, f)
|
||||
print cube()
|
||||
|
||||
BIN
surf/util.pyc
Executable file
BIN
surf/util.pyc
Executable file
Binary file not shown.
24
test00.py
Executable file
24
test00.py
Executable file
@ -0,0 +1,24 @@
|
||||
from surf.util import cube
|
||||
from surf.subd import cc
|
||||
|
||||
polygon = cube()
|
||||
print polygon
|
||||
|
||||
refined_poly = cc.refine(polygon)
|
||||
print refined_poly
|
||||
#
|
||||
#
|
||||
# import pylab
|
||||
# import mpl_toolkits.mplot3d.axes3d as p3
|
||||
#
|
||||
# fig = pylab.figure()
|
||||
# ax = p3.Axes3D(fig)
|
||||
# for edge in newPolygon.edges:
|
||||
# xs = [vertex.x for vertex in edge.vertices]
|
||||
# ys = [vertex.y for vertex in edge.vertices]
|
||||
# zs = [vertex.z for vertex in edge.vertices]
|
||||
# ax.plot_wireframe(xs, ys, zs)
|
||||
# ax.set_xlabel('X')
|
||||
# ax.set_ylabel('Y')
|
||||
# ax.set_zlabel('Z')
|
||||
# pylab.show()
|
||||
Loading…
Reference in New Issue
Block a user