148 lines
3.9 KiB
Python
148 lines
3.9 KiB
Python
#!/usr/bin/env python3
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class Vertex:
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def __init__(self, x = None, y = None, z = None):
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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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def from_array(self, arr):
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self.x = float(arr[0]) if len(arr) > 0 else None
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self.y = float(arr[1]) if len(arr) > 1 else None
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self.z = float(arr[2]) if len(arr) > 2 else None
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return self
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Normal = Vertex
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TexCoord = Vertex
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class FaceVertex:
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def __init__(self, vertex = None, texture = None, normal = None):
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self.vertex = vertex
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self.texture = texture
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self.normal = normal
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def from_array(self, arr):
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self.vertex = int(arr[0]) if len(arr) > 0 else None
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self.texture = int(arr[1]) if len(arr) > 1 else None
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self.normal = int(arr[2]) if len(arr) > 2 else None
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return self
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class Face:
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def __init__(self, a = None, b = None, c = None, mtl = None):
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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.mtl = mtl
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# Expects array of array
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def from_array(self, arr):
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self.a = FaceVertex().from_array(arr[0])
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self.b = FaceVertex().from_array(arr[1])
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self.c = FaceVertex().from_array(arr[2])
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return self
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class ModelParser:
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def __init__(self):
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self.vertices = []
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self.normals = []
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self.tex_coords = []
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self.faces = []
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self.bounding_box = BoundingBox()
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self.center_and_scale = True
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def add_vertex(self, vertex):
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self.vertices.append(vertex)
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self.bounding_box.add(vertex)
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def add_tex_coord(self, tex_coord):
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self.tex_coords.append(tex_coord)
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def add_normal(self, normal):
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self.normals.append(normal)
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def add_face(self, face):
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self.faces.append(face)
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def parse_line(self, string):
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pass
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def parse_file(self, path):
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with open(path) as f:
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for line in f.readlines():
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line = line.rstrip()
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self.parse_line(line)
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def gl_draw(self):
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import OpenGL.GL as gl
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gl.glColor3f(1.0,0.0,0.0)
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if self.center_and_scale:
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center = self.bounding_box.get_center()
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scale = self.bounding_box.get_scale() / 2
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gl.glPushMatrix()
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gl.glScalef(1/scale, 1/scale, 1/scale)
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gl.glTranslatef(-center.x, -center.y, -center.z)
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gl.glBegin(gl.GL_TRIANGLES)
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for face in self.faces:
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v1 = self.vertices[face.a.vertex]
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v2 = self.vertices[face.b.vertex]
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v3 = self.vertices[face.c.vertex]
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gl.glVertex3f(v1.x, v1.y, v1.z)
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gl.glVertex3f(v2.x, v2.y, v2.z)
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gl.glVertex3f(v3.x, v3.y, v3.z)
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gl.glEnd()
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if self.center_and_scale:
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gl.glPopMatrix()
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class BoundingBox:
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def __init__(self):
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self.min_x = +float('inf')
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self.min_y = +float('inf')
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self.min_z = +float('inf')
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self.max_x = -float('inf')
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self.max_y = -float('inf')
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self.max_z = -float('inf')
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def add(self, vertex):
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self.min_x = min(self.min_x, vertex.x)
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self.min_y = min(self.min_y, vertex.y)
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self.min_z = min(self.min_z, vertex.z)
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self.max_x = max(self.max_x, vertex.x)
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self.max_y = max(self.max_y, vertex.y)
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self.max_z = max(self.max_z, vertex.z)
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def __str__(self):
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return "[{},{}],[{},{}],[{},{}]".format(
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self.min_x,
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self.min_y,
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self.min_z,
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self.max_x,
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self.max_y,
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self.max_z)
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def get_center(self):
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return Vertex(
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(self.min_x + self.max_x) / 2,
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(self.min_y + self.max_y) / 2,
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(self.min_z + self.max_z) / 2)
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def get_scale(self):
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return max(
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abs(self.max_x - self.min_x),
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abs(self.max_y - self.min_y),
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abs(self.max_z - self.min_z))
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class Exporter:
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def __init__(self, model):
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self.model = model
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