UNPKG

@jscad/modeling

Version:

Constructive Solid Geometry (CSG) Library for JSCAD

openjscad.xyz

jscad/OpenJSCAD.org

174 lines (157 loc) • 8.39 kB
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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
const test = require('ava') const { geom3 } = require('../../geometries') const retessellate = require('./retessellate') const { comparePolygonsAsPoints } = require('../../../test/helpers') test('geom3: retessellate() should create proper geometry from empty geometries', (t) => { const obj1 = geom3.create() // one empty geometry const ret1 = retessellate(obj1) const exp1 = { polygons: [], isRetesselated: true, transforms: [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] } t.deepEqual(ret1, exp1) }) test('geom3: retessellate() should create proper geometry from solid geometries', (t) => { const box1 = [ [[-5.0, -5.0, -5.0], [-5.0, -5.0, 5.0], [-5.0, 5.0, 5.0], [-5.0, 5.0, -5.0]], [[5.0, -5.0, -5.0], [5.0, 5.0, -5.0], [5.0, 5.0, 5.0], [5.0, -5.0, 5.0]], [[-5.0, -5.0, -5.0], [5.0, -5.0, -5.0], [5.0, -5.0, 5.0], [-5.0, -5.0, 5.0]], [[-5.0, 5.0, -5.0], [-5.0, 5.0, 5.0], [5.0, 5.0, 5.0], [5.0, 5.0, -5.0]], [[-5.0, -5.0, -5.0], [-5.0, 5.0, -5.0], [5.0, 5.0, -5.0], [5.0, -5.0, -5.0]], [[-5.0, -5.0, 5.0], [5.0, -5.0, 5.0], [5.0, 5.0, 5.0], [-5.0, 5.0, 5.0]] ] const box2 = [ [[15.0, 15.0, 15.0], [15.0, 15.0, 25.0], [15.0, 25.0, 25.0], [15.0, 25.0, 15.0]], [[25.0, 15.0, 15.0], [25.0, 25.0, 15.0], [25.0, 25.0, 25.0], [25.0, 15.0, 25.0]], [[15.0, 15.0, 15.0], [25.0, 15.0, 15.0], [25.0, 15.0, 25.0], [15.0, 15.0, 25.0]], [[15.0, 25.0, 15.0], [15.0, 25.0, 25.0], [25.0, 25.0, 25.0], [25.0, 25.0, 15.0]], [[15.0, 15.0, 15.0], [15.0, 25.0, 15.0], [25.0, 25.0, 15.0], [25.0, 15.0, 15.0]], [[15.0, 15.0, 25.0], [25.0, 15.0, 25.0], [25.0, 25.0, 25.0], [15.0, 25.0, 25.0]] ] const box3 = [ [[-5.0, -5.0, -5.0], [-5.0, -5.0, 5.0], [-5.0, 5.0, 5.0], [-5.0, 5.0, -5.0]], [[5.0, -5.0, -5.0], [5.0, 5.0, -5.0], [5.0, 5.0, 5.0], [5.0, -5.0, 5.0]], [[-5.0, -5.0, -5.0], [5.0, -5.0, -5.0], [5.0, -5.0, 5.0], [-5.0, -5.0, 5.0]], [[-5.0, 5.0, -5.0], [-5.0, 5.0, 5.0], [5.0, 5.0, 5.0], [5.0, 5.0, -5.0]], [[-5.0, -5.0, -5.0], [-5.0, 5.0, -5.0], [5.0, 5.0, -5.0], [5.0, -5.0, -5.0]], [[-5.0, -5.0, 5.0], [-5.0, -5.0, 15.0], [-5.0, 5.0, 15.0], [-5.0, 5.0, 5.0]], [[5.0, -5.0, 5.0], [5.0, 5.0, 5.0], [5.0, 5.0, 15.0], [5.0, -5.0, 15.0]], [[-5.0, -5.0, 5.0], [5.0, -5.0, 5.0], [5.0, -5.0, 15.0], [-5.0, -5.0, 15.0]], [[-5.0, 5.0, 5.0], [-5.0, 5.0, 15.0], [5.0, 5.0, 15.0], [5.0, 5.0, 5.0]], [[-5.0, -5.0, 15.0], [5.0, -5.0, 15.0], [5.0, 5.0, 15.0], [-5.0, 5.0, 15.0]] ] const box4 = [ [[-5.0, -5.0, -5.0], [-5.0, -5.0, 5.0], [-5.0, 5.0, 5.0], [-5.0, 5.0, -5.0]], [[-5.0, -5.0, -5.0], [5.0, -5.0, -5.0], [5.0, -5.0, 5.0], [-5.0, -5.0, 5.0]], [[-5.0, -5.0, -5.0], [-5.0, 5.0, -5.0], [5.0, 5.0, -5.0], [5.0, -5.0, -5.0]], [[5.0, -5.0, -5.0], [5.0, 0.0, -5.0], [5.0, 0.0, 5.0], [5.0, -5.0, 5.0]], [[-5.0, 5.0, -5.0], [-5.0, 5.0, 5.0], [0.0, 5.0, 5.0], [0.0, 5.0, -5.0]], [[-5.0, -5.0, 5.0], [0.0, -5.0, 5.0], [0.0, 5.0, 5.0], [-5.0, 5.0, 5.0]], [[5.0, 0.0, -5.0], [5.0, 5.0, -5.0], [5.0, 5.0, 0.0], [5.0, 0.0, 0.0]], [[5.0, 5.0, 0.0], [5.0, 5.0, -5.0], [0.0, 5.0, -5.0], [0.0, 5.0, 0.0]], [[0.0, -5.0, 5.0], [5.0, -5.0, 5.0], [5.0, 0.0, 5.0], [0.0, 0.0, 5.0]], [[10.0, 0.0, 0.0], [10.0, 10.0, 0.0], [10.0, 10.0, 10.0], [10.0, 0.0, 10.0]], [[0.0, 10.0, 0.0], [0.0, 10.0, 10.0], [10.0, 10.0, 10.0], [10.0, 10.0, 0.0]], [[0.0, 0.0, 10.0], [10.0, 0.0, 10.0], [10.0, 10.0, 10.0], [0.0, 10.0, 10.0]], [[0.0, 5.0, 10.0], [0.0, 10.0, 10.0], [0.0, 10.0, 0.0], [0.0, 5.0, 0.0]], [[5.0, 0.0, 0.0], [10.0, 0.0, 0.0], [10.0, 0.0, 10.0], [5.0, 0.0, 10.0]], [[5.0, 10.0, 0.0], [10.0, 10.0, 0.0], [10.0, 0.0, 0.0], [5.0, 0.0, 0.0]], [[0.0, 0.0, 5.0], [0.0, 0.0, 10.0], [0.0, 5.0, 10.0], [0.0, 5.0, 5.0]], [[5.0, 0.0, 5.0], [5.0, 0.0, 10.0], [0.0, 0.0, 10.0], [0.0, 0.0, 5.0]], [[0.0, 5.0, 0.0], [0.0, 10.0, 0.0], [5.0, 10.0, 0.0], [5.0, 5.0, 0.0]] ] const box5 = [ // with coplanar polygons [[-5.0, -5.0, -5.0], [-5.0, -5.0, 5.0], [-5.0, 5.0, 5.0], [-5.0, 5.0, -5.0]], // end [[10.0, -5.0, -5.0], [10.0, -5.0, 5.0], [-5.0, -5.0, 5.0], [-5.0, -5.0, -5.0]], // side [[10.0, 5.0, 5.0], [10.0, 5.0, -5.0], [-5.0, 5.0, -5.0], [-5.0, 5.0, 5.0]], // side [[10.0, 5.0, -5.0], [10.0, -5.0, -5.0], [-5.0, -5.0, -5.0], [-5.0, 5.0, -5.0]], // bottom [[10.0, -5.0, 5.0], [10.0, 0.0, 5.0], [-5.0, 0.0, 5.0], [-5.0, -5.0, 5.0]], // top [[10.0, 0.0, 5.0], [10.0, 5.0, 5.0], [-5.0, 5.0, 5.0], [-5.0, 0.0, 5.0]], // top [[10.0, -5.0, -5.0], [10.0, 5.0, -5.0], [10.0, 5.0, 5.0], [10.0, -5.0, 5.0]] // end ] const obj1 = geom3.fromPoints(box1) const obj2 = geom3.fromPoints(box1.concat(box2)) // combined geometry const obj3 = geom3.fromPoints(box3) const obj4 = geom3.fromPoints(box4) const obj5 = geom3.fromPoints(box5) // one solid geometry const ret1 = retessellate(obj1) const pts1 = geom3.toPoints(ret1) const exp1 = [ [[-5, -5, -5], [-5, -5, 5], [-5, 5, 5], [-5, 5, -5]], [[5, -5, -5], [5, 5, -5], [5, 5, 5], [5, -5, 5]], [[-5, -5, -5], [5, -5, -5], [5, -5, 5], [-5, -5, 5]], [[-5, 5, -5], [-5, 5, 5], [5, 5, 5], [5, 5, -5]], [[-5, -5, -5], [-5, 5, -5], [5, 5, -5], [5, -5, -5]], [[-5, -5, 5], [5, -5, 5], [5, 5, 5], [-5, 5, 5]] ] t.true(comparePolygonsAsPoints(pts1, exp1)) // two non-overlapping geometries const ret2 = retessellate(obj2) const pts2 = geom3.toPoints(ret2) const exp2 = [ [[-5, -5, -5], [-5, -5, 5], [-5, 5, 5], [-5, 5, -5]], [[5, -5, -5], [5, 5, -5], [5, 5, 5], [5, -5, 5]], [[-5, -5, -5], [5, -5, -5], [5, -5, 5], [-5, -5, 5]], [[-5, 5, -5], [-5, 5, 5], [5, 5, 5], [5, 5, -5]], [[-5, -5, -5], [-5, 5, -5], [5, 5, -5], [5, -5, -5]], [[-5, -5, 5], [5, -5, 5], [5, 5, 5], [-5, 5, 5]], [[15, 15, 15], [15, 15, 25], [15, 25, 25], [15, 25, 15]], [[25, 15, 15], [25, 25, 15], [25, 25, 25], [25, 15, 25]], [[15, 15, 15], [25, 15, 15], [25, 15, 25], [15, 15, 25]], [[15, 25, 15], [15, 25, 25], [25, 25, 25], [25, 25, 15]], [[15, 15, 15], [15, 25, 15], [25, 25, 15], [25, 15, 15]], [[15, 15, 25], [25, 15, 25], [25, 25, 25], [15, 25, 25]] ] t.true(comparePolygonsAsPoints(pts2, exp2)) // two touching geometries (faces) const ret3 = retessellate(obj3) const pts3 = geom3.toPoints(ret3) const exp3 = [ [[-5, 5, 15], [-5, 5, -5], [-5, -5, -5], [-5, -5, 15]], [[5, -5, 15], [5, -5, -5], [5, 5, -5], [5, 5, 15]], [[-5, -5, 15], [-5, -5, -5], [5, -5, -5], [5, -5, 15]], [[5, 5, 15], [5, 5, -5], [-5, 5, -5], [-5, 5, 15]], [[-5, -5, -5], [-5, 5, -5], [5, 5, -5], [5, -5, -5]], [[-5, -5, 15], [5, -5, 15], [5, 5, 15], [-5, 5, 15]] ] t.true(comparePolygonsAsPoints(pts3, exp3)) // two overlapping geometries const ret4 = retessellate(obj4) const pts4 = geom3.toPoints(ret4) const exp4 = [ [[-5, -5, -5], [-5, -5, 5], [-5, 5, 5], [-5, 5, -5]], [[-5, -5, -5], [5, -5, -5], [5, -5, 5], [-5, -5, 5]], [[-5, -5, -5], [-5, 5, -5], [5, 5, -5], [5, -5, -5]], [[5, -5, 5], [5, -5, 0], [5, 0, 0], [5, 0, 5]], [[5, -5, 0], [5, -5, -5], [5, 5, -5], [5, 5, 0]], [[0, 5, 5], [0, 5, 0], [-5, 5, 0], [-5, 5, 5]], [[5, 5, 0], [5, 5, -5], [-5, 5, -5], [-5, 5, 0]], [[-5, 5, 5], [-5, 0, 5], [0, 0, 5], [0, 5, 5]], [[-5, 0, 5], [-5, -5, 5], [5, -5, 5], [5, 0, 5]], [[10, 0, 0], [10, 10, 0], [10, 10, 10], [10, 0, 10]], [[0, 10, 0], [0, 10, 10], [10, 10, 10], [10, 10, 0]], [[0, 0, 10], [10, 0, 10], [10, 10, 10], [0, 10, 10]], [[0, 10, 10], [0, 10, 5], [0, 0, 5], [0, 0, 10]], [[0, 10, 5], [0, 10, 0], [0, 5, 0], [0, 5, 5]], [[0, 0, 10], [0, 0, 5], [10, 0, 5], [10, 0, 10]], [[5, 0, 5], [5, -0, 0], [10, -0, 0], [10, 0, 5]], [[10, 10, 0], [10, 5, 0], [0, 5, 0], [0, 10, 0]], [[10, 5, 0], [10, 0, 0], [5, 0, 0], [5, 5, 0]] ] t.true(comparePolygonsAsPoints(pts4, exp4)) // coplanar polygons const ret5 = retessellate(obj5) const pts5 = geom3.toPoints(ret5) const exp5 = [ [[-5, -5, -5], [-5, -5, 5], [-5, 5, 5], [-5, 5, -5]], [[10, -5, -5], [10, -5, 5], [-5, -5, 5], [-5, -5, -5]], [[10, 5, 5], [10, 5, -5], [-5, 5, -5], [-5, 5, 5]], [[10, 5, -5], [10, -5, -5], [-5, -5, -5], [-5, 5, -5]], [[-5, 5, 5], [-5, -5, 5], [10, -5, 5], [10, 5, 5]], [[10, -5, -5], [10, 5, -5], [10, 5, 5], [10, -5, 5]] ] t.true(comparePolygonsAsPoints(pts5, exp5)) })