declaracad/examples/bottle.enaml at master · codelv/declaracad · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
"""
See https://dev.opencascade.org/doc/overview/html/occt__tutorial.html
for more details on how this works.

"""
from math import pi
from declaracad.occ.api import *


enamldef Assembly(Part): part:
    name = "Bottle"

    #: "Parametric" properties of this shape
    attr height = 70.0
    attr width = 50.0
    attr thickness = 30.0

    func make_cylinder_surface(**kwargs):
        cylinder = Cylinder(**kwargs)
        cylinder.render()
        return cylinder.topology.faces[0]

    Fuse:
      color = '#abc'
      transparency = 0.4

      ThickSolid: bottle:
        # Hollows out the bottle
        faces << [neck.topology.faces[1]]
        offset << thickness/50.0
        Fuse:
            # Fuse the bottle to the neck
            Cylinder: neck:
                # Bottle neck
                position << (0,0, part.height)
                direction = (0,0,1)
                radius << thickness/4.0
                height << part.height/10.0
            Fillet: body:
                # Bottle, with filleted edges
                radius << thickness/12.0
                Prism:
                    # Create a solid from the bottle face
                    vector << (0,0,height)
                    Face:
                        # Create a face from the base profile
                        Wire:
                            # Create a wire from the profile and mirrored profile
                            Wire: profile:
                                Segment: s1:
                                    points << [ (-width/2.0, 0, 0), (-width/2.0, -thickness/4.0, 0)]
                                Arc:
                                    points = [s1.points[-1],
                                                    (0, -thickness/2.0, 0) ,
                                                    s2.points[-1]]
                                Segment: s2:
                                    points = [(width/2.0, 0, 0), (width/2.0, -thickness/4.0, 0) ]
                            Transform:
                                #: TODO coerce
                                operations = [Mirror(x=1)]
                                shape = profile


      ThruSections: threads:
        solid = True
        Wire: w1:
            attr r = neck.radius + bottle.offset
            TrimmedCurve: c1:
                surface = make_cylinder_surface(radius=r*0.99, position=neck.position)
                v = pi
                Ellipse: e1:
                    position = (2*pi, neck.height/2)
                    rotation = (pi/8, neck.height/4)
                    major_radius = 3*pi
                    minor_radius = neck.height / 10
            Segment: s3:
               surface = c1.surface
               points = [e1.get_value_at(0), e1.get_value_at(pi)]
        Wire:
            color = 'green'
            TrimmedCurve: c2:
                surface = make_cylinder_surface(radius=w1.r*1.05, position=neck.position)
                v = pi
                Ellipse: e2:
                    position = e1.position
                    rotation = e1.rotation
                    major_radius = e1.major_radius
                    minor_radius = e1.minor_radius/4
            Segment: s4:
                surface = c2.surface
                points = [e2.get_value_at(0), e2.get_value_at(pi)]