feat: OOOOOOOOOOOOOOOOOOO
This commit is contained in:
gdamms
parent
1b40190198
commit
7318207dbd
377
main.py
377
main.py
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@ -7,32 +7,63 @@ import argparse
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from rich.progress import Progress
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def cot(x: float):
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def cot(x: float) -> float:
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"""Cotangeante of x
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Args:
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x (float): angle
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Returns:
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float: cotangeante of x
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"""
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sin_x = np.sin(x)
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if sin_x == 0:
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return 1e16
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return np.cos(x) / sin_x
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def sliding_window(l: list, n: int = 2):
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def sliding_window(l: list, n: int = 2) -> list[tuple]:
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"""Create a sliding window of size n
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Args:
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l (list): list to create the sliding window from
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n (int, optional): number of value. Defaults to 2.
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Returns:
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list[tuple]: sliding window
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"""
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k = n - 1
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l2 = l + [l[i] for i in range(k)]
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res = [(x for x in l2[i:i+n]) for i in range(len(l2)-k)]
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return res
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class Edge:
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def __init__(self, a, b):
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"""Edge representation"""
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def __init__(self, a: int, b: int) -> None:
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"""Create an edge
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Args:
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a (int): first vertex
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b (int): second vertex
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"""
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self.a = min(a, b)
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self.b = max(a, b)
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self.face1 = None
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self.face2 = None
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self.face1: Face | None = None
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self.face2: Face | None = None
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self.fold = 0.0
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self.curvature = 0.0
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self.fold: float = 0.0
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self.curvature: float = 0.0
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def __eq__(self, __o: object) -> bool:
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"""Check if two edges are equal
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Args:
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__o (object): other edge
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Returns:
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bool: True if equal, False otherwise
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"""
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if isinstance(__o, Edge):
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return self.a == __o.a and self.b == __o.b
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@ -40,17 +71,43 @@ class Edge:
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class Face:
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def __init__(self, a, b, c):
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"""Face representation"""
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def __init__(self, a: int, b: int, c: int) -> None:
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"""Face constructor
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Args:
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a (int): first vertex index
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b (int): second vertex index
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c (int): third vertex index
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"""
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self.a = a
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self.b = b
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self.c = c
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self.edges: list[Edge] = []
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self.a = a
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self.b = b
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self.c = c
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self.normal = np.zeros(3)
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def to_obja(self):
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def to_obja(self) -> obja.Face:
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"""Convert face to obja format
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Returns:
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obja.Face: face in obja format
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"""
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return obja.Face(self.a, self.b, self.c)
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def __eq__(self, __o: object) -> bool:
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"""Check if two faces are equal
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Args:
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__o (object): other face
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Returns:
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bool: True if equal, False otherwise
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"""
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if isinstance(__o, Face):
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return set((__o.a, __o.b, __o.c)) == set((self.a, self.b, self.c))
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@ -58,138 +115,161 @@ class Face:
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class Vertex:
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def __init__(self, pos):
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"""Vertex representation"""
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def __init__(self, pos: np.ndarray[int, float]) -> None:
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"""Vertex constructor
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Args:
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pos (np.ndarray[int, float]): position of the vertex
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"""
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self.pos = pos
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self.vertex_ring = []
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self.face_ring = []
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self.vertex_ring: list[int] = []
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self.face_ring: list[int] = []
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self.normal = np.zeros(3)
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self.normal: np.ndarray = np.zeros(3)
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self.area = 0.0
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self.curvature = 0.0
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self.area: float = 0.0
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self.curvature: float = 0.0
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def to_obja(self):
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def to_obja(self) -> np.ndarray:
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"""Convert vertex to obja format
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Returns:
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np.ndarray: vertex in obja format
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"""
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return self.pos
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class MAPS(obja.Model):
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"""_summary_
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Args:
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obja (_type_): _description_
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"""
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"""MAPS compression model"""
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def __init__(self):
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"""MAPS constructor"""
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super().__init__()
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def parse_file(self, path):
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def parse_file(self, path: str) -> None:
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"""Parse a file
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Args:
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path (str): path to the file
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"""
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super().parse_file(path)
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for i, vertex in enumerate(self.vertices):
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self.vertices[i] = Vertex(vertex)
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for i, face in enumerate(self.faces):
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self.faces[i] = Face(face.a, face.b, face.c)
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def update(self):
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def update(self) -> None:
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"""Precompute things"""
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# Reset progress bars
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self.progress.reset(self.select_task, total=len(self.vertices))
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self.progress.reset(self.compress_task)
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# Compute usefull things
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self.update_rings()
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self.update_edges()
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self.update_normals()
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self.update_area_curvature()
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def fix(self):
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def fix(self) -> None:
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"""Fix the model"""
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fixed = True
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# Find a vertex with less than 3 faces
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for i, vertex in enumerate(self.vertices):
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if vertex is None:
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continue
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if len(vertex.face_ring) < 3:
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for face in vertex.face_ring:
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self.faces[face] = None
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self.vertices[i] = None
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fixed = False
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return fixed
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def update_edges(self):
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if len(vertex.face_ring) < 3:
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# Remove the vertex and its faces
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for face in vertex.face_ring:
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if not self.final_only:
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self.operations.append(
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('af', face, self.faces[face].to_obja()))
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self.faces[face] = None
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if not self.final_only:
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self.operations.append(
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('av', i, vertex.to_obja()))
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self.vertices[i] = None
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# Indicate that the model has to be fixed again
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fixed = False
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return fixed
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def update_edges(self) -> None:
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"""Update edges"""
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self.edges = {}
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for face in self.faces:
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if face is None:
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continue
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# Create all edges for the face
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for a, b in sliding_window([face.a, face.b, face.c], n=2):
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new_edge = Edge(a, b)
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if f"{new_edge.a}:{new_edge.b}" not in self.edges.keys():
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new_edge.face1 = face
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for face2_i in self.vertices[new_edge.a].face_ring:
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face2 = self.faces[face2_i]
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if face2 == face:
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continue
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# Check if the edge already exists
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if f"{new_edge.a}:{new_edge.b}" in self.edges.keys():
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continue
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face2_vertices = (face2.a, face2.b, face2.c)
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if not (a in face2_vertices and b in face2_vertices):
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continue
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new_edge.face1 = face
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new_edge.face2 = face2
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break
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self.edges[f"{new_edge.a}:{new_edge.b}"] = new_edge
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def update_rings(self):
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try:
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fixed = False
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while not fixed:
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for vertex in self.vertices:
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if vertex is None:
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# Find the opoosite face
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for face2_i in self.vertices[new_edge.a].face_ring:
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face2 = self.faces[face2_i]
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if face2 == face:
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continue
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vertex.face_ring = []
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for i, face in enumerate(self.faces):
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if face is None:
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face2_vertices = (face2.a, face2.b, face2.c)
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if not (a in face2_vertices and b in face2_vertices):
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continue
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for vertex_i in (face.a, face.b, face.c):
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self.vertices[vertex_i].face_ring.append(i)
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fixed = self.fix()
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for i, vertex in enumerate(self.vertices):
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vertex = self.vertices[i]
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new_edge.face2 = face2
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break
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# Add the new edge to the list
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self.edges[f"{new_edge.a}:{new_edge.b}"] = new_edge
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def update_rings(self) -> None:
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"""Update vertex and face rings"""
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fixed = False
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# Wait till the model is fixed
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while not fixed:
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for vertex in self.vertices:
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# Reset vertex ring
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if vertex is None:
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continue
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if len(vertex.face_ring) == 0:
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self.vertices[i] = None
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continue
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ring = self.one_ring(i)
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vertex.vertex_ring = ring
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except ValueError:
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self.update_rings()
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vertex.face_ring = []
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def fail(self, index):
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print('fail')
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output_file = open('obja/example/fail.obja', 'w')
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output = obja.Output(output_file)
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used = []
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for i, x in enumerate(self.vertices[index].face_ring):
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face = self.faces[x]
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for y in (face.a, face.b, face.c):
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if y in used:
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# Add faces to vertex ring
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for i, face in enumerate(self.faces):
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if face is None:
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continue
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output.add_vertex(y, self.vertices[y].to_obja())
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used.append(y)
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output.add_face(x, face.to_obja())
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print('fc {} {} {} {}'.format(
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i + 1,
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np.random.rand(),
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np.random.rand(),
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np.random.rand()),
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file=output_file
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)
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print(x, (face.a, face.b, face.c))
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for vertex_i in (face.a, face.b, face.c):
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self.vertices[vertex_i].face_ring.append(i)
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def update_area_curvature(self):
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# Fix the model
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fixed = self.fix()
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for i, vertex in enumerate(self.vertices):
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vertex = self.vertices[i]
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if vertex is None:
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continue
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# Compute rings
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ring = self.one_ring(i)
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vertex.vertex_ring = ring
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def update_area_curvature(self) -> None:
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"""Update area and curvature"""
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# Get the area and curvature of each vertex
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for i, vertex in enumerate(self.vertices):
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if vertex is None:
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continue
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@ -198,34 +278,39 @@ class MAPS(obja.Model):
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vertex.area = area
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vertex.curvature = curvature
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# Find feature edges
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self.feature_edges = []
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for edge in self.edges.values():
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if edge.face2 is None:
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self.fail(edge.b)
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edge.fold = np.dot(edge.face1.normal, edge.face2.normal)
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if edge.fold < 0.5:
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self.feature_edges.append(edge)
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def update_normals(self):
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def update_normals(self) -> None:
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"""Update normals"""
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for face in self.faces:
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if face is None:
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continue
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# Compute face normal
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p1 = self.vertices[face.a].pos
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p2 = self.vertices[face.b].pos
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p3 = self.vertices[face.c].pos
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u = p2 - p1
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v = p3 - p1
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n = np.cross(u, v)
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n /= np.linalg.norm(n)
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norm = np.linalg.norm(n)
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if norm != 0:
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n /= np.linalg.norm(n)
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face.normal = n
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# Sum vertex normal
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self.vertices[face.a].normal += n
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self.vertices[face.b].normal += n
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self.vertices[face.c].normal += n
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# Normalize vertex normals
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for vertex in self.vertices:
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if vertex is None:
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continue
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@ -235,7 +320,7 @@ class MAPS(obja.Model):
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vertex.normal /= norm
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def one_ring(self, index: int) -> list[int]:
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""" Return the corresponding 1-ring
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"""Return the corresponding 1-ring
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Args:
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index (int): index of the 1-ring's main vertex
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@ -271,40 +356,12 @@ class MAPS(obja.Model):
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break
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if not broke:
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self.fail(index)
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for i, face_i in enumerate(self.vertices[index].face_ring):
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for face_j in self.vertices[index].face_ring[i+1:]:
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face1 = self.faces[face_i]
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face2 = self.faces[face_j]
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if face1 == face2:
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self.faces[face_i] = None
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self.faces[face_j] = None
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verts = (face1.a, face1.b, face1.c)
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for vert in verts:
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if vert == index:
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continue
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to_remove = True
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for face_k in self.vertices[vert].face_ring:
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face = self.faces[face_k]
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if face is None:
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continue
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if vert in (face.a, face.b, face.c):
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to_remove = False
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break
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if to_remove:
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self.vertices[vert] = None
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break
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break
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raise ValueError(
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f"Vertex {prev_index} is not in the remaining faces {ring_faces}. Origin {ring} on {index}")
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raise Exception('Ring not corrupted')
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return ring
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def compute_area_curvature(self, index: int) -> tuple[float, float]:
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""" Compute area and curvature the corresponding 1-ring
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"""Compute area and curvature the corresponding 1-ring
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Args:
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index (int): index of the 1-ring's main vertex
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@ -426,7 +483,7 @@ class MAPS(obja.Model):
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return selected_vertices
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def project_polar(self, index: int) -> tuple[list[np.ndarray], list[int]]:
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""" Flatten the 1-ring to retriangulate
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"""Flatten the 1-ring to retriangulate
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Args:
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index (int): main vertex of the 1-ring
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@ -450,7 +507,7 @@ class MAPS(obja.Model):
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return coordinates, ring
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def compute_angle(self, i: int, j: int, k: int) -> float:
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""" Calculate the angle defined by three points
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"""Calculate the angle defined by three points
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Args:
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i (int): previous index
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@ -472,7 +529,7 @@ class MAPS(obja.Model):
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return np.arccos(np.clip(res, -1, 1))
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def clip_ear(self, index: int) -> list[obja.Face]:
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""" Retriangulate a polygon using the ear clipping algorithm
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"""Retriangulate a polygon using the ear clipping algorithm
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Args:
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index (int): index of 1-ring
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@ -567,11 +624,11 @@ class MAPS(obja.Model):
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return faces
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def is_convex(self,
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prev_vert: np.ndarray[int, np.dtype[np.float64]],
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curr_vert: np.ndarray[int, np.dtype[np.float64]],
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next_vert: np.ndarray[int, np.dtype[np.float64]]
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prev_vert: np.ndarray[int, float],
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curr_vert: np.ndarray[int, float],
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next_vert: np.ndarray[int, float],
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) -> bool:
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""" Check if the angle less than pi
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"""Check if the angle less than pi
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Args:
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prev_vert (np.ndarray): first point
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@ -592,12 +649,12 @@ class MAPS(obja.Model):
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return internal_angle >= np.pi
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def is_inside(self,
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a: np.ndarray[int, np.dtype[np.float64]],
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b: np.ndarray[int, np.dtype[np.float64]],
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c: np.ndarray[int, np.dtype[np.float64]],
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p: np.ndarray[int, np.dtype[np.float64]]
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a: np.ndarray[int, float],
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b: np.ndarray[int, float],
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c: np.ndarray[int, float],
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p: np.ndarray[int, float],
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) -> bool:
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""" Check if p is in the triangle a b c
|
||||
"""Check if p is in the triangle a b c
|
||||
|
||||
Args:
|
||||
a (np.ndarray): point one
|
||||
|
|
@ -642,7 +699,7 @@ class MAPS(obja.Model):
|
|||
colors = [c - min_c for c in colors]
|
||||
max_c = max(colors)
|
||||
|
||||
operations = []
|
||||
self.operations = []
|
||||
for i, face in enumerate(self.faces):
|
||||
if face is None:
|
||||
continue
|
||||
|
|
@ -654,19 +711,19 @@ class MAPS(obja.Model):
|
|||
r, g, b = 1.0, 0.0, 0.0
|
||||
break
|
||||
|
||||
operations.append(('fc', i, (r, g, b)))
|
||||
operations.append(('af', i, face.to_obja()))
|
||||
self.operations.append(('fc', i, (r, g, b)))
|
||||
self.operations.append(('af', i, face.to_obja()))
|
||||
|
||||
for i, vertex in enumerate(self.vertices):
|
||||
if vertex is None:
|
||||
continue
|
||||
operations.append(('av', i, vertex.to_obja()))
|
||||
operations.reverse()
|
||||
self.operations.append(('av', i, vertex.to_obja()))
|
||||
self.operations.reverse()
|
||||
|
||||
# Write the result in output file
|
||||
output_model = obja.Output(output)
|
||||
|
||||
for (op, index, value) in operations:
|
||||
for (op, index, value) in self.operations:
|
||||
if op == 'av':
|
||||
output_model.add_vertex(index, value)
|
||||
elif op == 'af':
|
||||
|
|
@ -685,7 +742,7 @@ class MAPS(obja.Model):
|
|||
)
|
||||
|
||||
def compress(self, output: io.TextIOWrapper, level: int, final_only: bool, debug: bool) -> None:
|
||||
""" Compress the 3d model
|
||||
"""Compress the 3d model
|
||||
|
||||
Args:
|
||||
output (io.TextIOWrapper): Output file descriptor
|
||||
|
|
@ -697,7 +754,8 @@ class MAPS(obja.Model):
|
|||
self.compress_task = progress.add_task('╙── Compression')
|
||||
self.progress = progress
|
||||
|
||||
operations = []
|
||||
self.operations = []
|
||||
self.final_only = final_only
|
||||
|
||||
# while len(self.vertices) > 64:
|
||||
for _ in progress.track(range(level), task_id=self.global_task):
|
||||
|
|
@ -714,43 +772,43 @@ class MAPS(obja.Model):
|
|||
|
||||
# Edit the first faces
|
||||
for i in range(len(faces)):
|
||||
if not final_only:
|
||||
operations.append(
|
||||
if not self.final_only:
|
||||
self.operations.append(
|
||||
('ef', ring_faces[i], self.faces[ring_faces[i]].to_obja()))
|
||||
self.faces[ring_faces[i]] = faces[i]
|
||||
|
||||
# Remove the last faces
|
||||
for i in range(len(faces), len(ring_faces)):
|
||||
if not final_only:
|
||||
operations.append(
|
||||
if not self.final_only:
|
||||
self.operations.append(
|
||||
('af', ring_faces[i], self.faces[ring_faces[i]].to_obja()))
|
||||
self.faces[ring_faces[i]] = None
|
||||
|
||||
# Remove the vertex
|
||||
if not final_only:
|
||||
operations.append(
|
||||
if not self.final_only:
|
||||
self.operations.append(
|
||||
('av', v_index, self.vertices[v_index].to_obja()))
|
||||
self.vertices[v_index] = None
|
||||
|
||||
if debug:
|
||||
self.debug(output)
|
||||
return
|
||||
|
||||
|
||||
# Register remaining vertices and faces
|
||||
for i, face in enumerate(self.faces):
|
||||
if face is not None:
|
||||
operations.append(('af', i, face.to_obja()))
|
||||
self.operations.append(('af', i, face.to_obja()))
|
||||
for i, v_index in enumerate(self.vertices):
|
||||
if v_index is not None:
|
||||
operations.append(('av', i, v_index.to_obja()))
|
||||
self.operations.append(('av', i, v_index.to_obja()))
|
||||
|
||||
# To rebuild the model, run operations in reverse order
|
||||
operations.reverse()
|
||||
self.operations.reverse()
|
||||
|
||||
# Write the result in output file
|
||||
output_model = obja.Output(output)
|
||||
|
||||
for (op, index, value) in operations:
|
||||
for (op, index, value) in self.operations:
|
||||
if op == 'av':
|
||||
output_model.add_vertex(index, value)
|
||||
elif op == 'af':
|
||||
|
|
@ -773,7 +831,7 @@ class MAPS(obja.Model):
|
|||
|
||||
|
||||
def main(args):
|
||||
""" Run MAPS model compression
|
||||
"""Run MAPS model compression
|
||||
|
||||
Args:
|
||||
args (Namespace): arguments (input and output path)
|
||||
|
|
@ -782,7 +840,8 @@ def main(args):
|
|||
model.parse_file(args.input)
|
||||
|
||||
with open(args.output, 'w') as output:
|
||||
model.compress(output, args.level, args.final or args.debug, args.debug)
|
||||
model.compress(output, args.level,
|
||||
args.final or args.debug, args.debug)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
|
|
|
|||
Loading…
Reference in a new issue