1 ! Copyright (C) 2010 Slava Pestov.
2 USING: accessors combinators fry kernel locals namespaces
3 game.models.half-edge euler.b-rep sequences typed math
7 ERROR: edges-not-incident ;
9 : assert-incident ( e1 e2 -- )
10 incident? [ edges-not-incident ] unless ;
12 ERROR: should-not-be-equal obj1 obj2 ;
14 : assert-not= ( obj1 obj2 -- )
15 2dup eq? [ should-not-be-equal ] [ 2drop ] if ;
17 ERROR: edges-in-different-faces ;
19 : assert-same-face ( e1 e2 -- )
20 same-face? [ edges-in-different-faces ] unless ;
22 ERROR: edges-in-same-face ;
24 : assert-different-faces ( e1 e2 -- )
25 same-face? [ edges-in-same-face ] when ;
27 : assert-isolated-component ( edge -- )
28 [ [ opposite-edge>> ] [ next-edge>> ] bi assert= ]
29 [ dup opposite-edge>> assert-same-face ]
32 : assert-base-face ( face -- )
33 base-face check-instance drop ;
35 ERROR: has-rings face ;
37 : assert-no-rings ( face -- )
38 dup next-ring>> [ has-rings ] [ drop ] if ;
40 : assert-ring-of ( ring face -- )
41 [ base-face>> ] dip assert= ;
43 : with-b-rep ( b-rep quot -- )
44 [ b-rep ] dip with-variable ; inline
46 : make-b-rep ( quot -- b-rep )
47 <b-rep> [ swap with-b-rep ] [ finish-b-rep ] [ ] tri ; inline
51 :: make-loop ( vertex face -- edge )
52 b-rep get new-edge :> edge
59 : make-loop-face ( vertex -- edge )
64 :: make-edge ( vertex next-edge -- edge )
65 b-rep get new-edge :> edge
67 next-edge edge next-edge<<
68 next-edge face>> edge face<<
72 : opposite-edges ( e1 e2 -- )
73 [ opposite-edge<< ] [ swap opposite-edge<< ] 2bi ;
78 INSTANCE: sequence point
79 INSTANCE: number point
81 TYPED:: make-vefs ( pos1: point pos2: point -- edge: b-edge )
84 pos1 b-rep new-vertex :> v1
85 v1 make-loop-face :> e1
87 pos2 b-rep new-vertex :> v2
95 TYPED:: make-ev-one ( edge: b-edge point: point -- edge: b-edge )
96 point b-rep get new-vertex :> v
97 v edge make-edge :> e1'
99 edge vertex>> e1' make-edge :> e2'
101 e2' edge face-cw next-edge<<
102 e1' e2' opposite-edges
108 :: subdivide-vertex-cycle ( e1 e2 v -- )
111 e1 vertex-cw e2 v subdivide-vertex-cycle
114 :: (make-ev) ( e1 e2 point -- edge )
115 e1 e2 assert-incident
117 point b-rep get new-vertex :> v'
118 v' e2 make-edge :> e1'
122 v e1 make-edge :> e2'
124 e1 e2 v' subdivide-vertex-cycle
128 e1 opposite-edge>> :> e1m
135 e1' e2' opposite-edges
141 TYPED:: make-ev ( e1: b-edge e2: b-edge point: point -- edge: b-edge )
143 [ e1 point make-ev-one ] [ e1 e2 point (make-ev) ] if ;
147 : subdivide-edge-cycle ( face e1 e2 -- )
150 [ [ next-edge>> ] dip subdivide-edge-cycle ] 3bi
155 TYPED:: make-ef ( e1: b-edge e2: b-edge -- edge: b-edge )
156 e1 e2 assert-same-face
158 e2 vertex>> make-loop-face :> e1'
159 e1 vertex>> e2 make-edge :> e2'
160 e1' e2' opposite-edges
167 e1' face>> e1 e2 subdivide-edge-cycle
176 TYPED:: make-e-kill-r ( edge-ring: b-edge edge-face: b-edge -- edge: b-edge )
177 edge-ring face>> :> ring
178 edge-face face>> :> face
179 ring face assert-ring-of
181 edge-ring [ face >>face drop ] each-face-edge
183 edge-ring vertex>> edge-face make-edge :> e1
184 edge-face vertex>> edge-ring make-edge :> e2
186 ring face delete-ring
187 ring b-rep get delete-face
189 e2 edge-face face-cw next-edge<<
190 e1 edge-ring face-cw next-edge<<
196 TYPED:: make-f-kill-rh ( edge-ring: b-edge -- )
197 edge-ring face>> :> ring
198 ring base-face>> :> base-face
199 ring base-face delete-ring
200 ring ring base-face<< ;
202 TYPED:: kill-vefs ( edge: b-edge -- )
203 edge assert-isolated-component
206 edge dup opposite-edge>> :> ( e2 e1 )
211 e1 face>> b-rep delete-face
215 v1 b-rep delete-vertex
216 v2 b-rep delete-vertex ;
218 TYPED:: kill-ev ( edge: b-edge -- )
222 edge opposite-edge>> :> edge'
225 edge [ v' >>vertex drop ] each-vertex-edge
227 edge face-cw :> edgep
228 edge' face-cw :> edge'p
230 edge next-edge>> edgep next-edge<<
231 edge' next-edge>> edge'p next-edge<<
233 v b-rep delete-vertex
234 edge b-rep delete-edge
235 edge' b-rep delete-edge ;
237 TYPED:: kill-ef ( edge: b-edge -- )
241 edge opposite-edge>> :> e2
243 e1 e2 assert-different-faces
251 e1 [ f2 >>face drop ] each-face-edge
255 e2 next-edge>> e2p next-edge<<
258 e2 next-edge>> e1p next-edge<<
259 e1 next-edge>> e2p next-edge<<
263 e2 b-rep delete-edge ;
265 TYPED:: kill-e-make-r ( edge: b-edge -- edge-ring: b-edge )
268 edge opposite-edge>> :> edge'
269 edge' next-edge>> :> edge-ring
270 edge-ring opposite-edge>> :> edge-ring'
272 edge edge' assert-same-face
273 edge edge-ring assert-same-face
274 edge edge-ring' assert-different-faces
276 b-rep new-face :> ring
278 ring edge face>> base-face>> add-ring
279 ring edge' edge subdivide-edge-cycle
281 edge b-rep delete-edge
282 edge' b-rep delete-edge
286 TYPED:: kill-f-make-rh ( edge-face: b-edge edge-base-face: b-edge -- )
287 edge-face face>> :> face
288 edge-base-face face>> :> base-face
290 face assert-base-face
291 base-face assert-base-face
292 edge-face edge-base-face assert-different-faces
294 face base-face add-ring ;
296 TYPED: move-v ( edge: b-edge point: point -- )
297 swap vertex>> position<< ;
299 TYPED: move-e ( edge: b-edge offset: point -- )
300 [ dup opposite-edge>> ] dip
301 '[ vertex>> [ _ v+ ] change-position drop ] bi@ ;
303 TYPED: move-f ( edge: b-edge offset: point -- )
304 '[ vertex>> [ _ v+ ] change-position drop ] each-face-edge ;
306 TYPED: sharp-e ( edge: b-edge sharp?: boolean -- )
309 TYPED: sharp-f ( edge: b-edge sharp?: boolean -- )
310 '[ _ sharp-e ] each-face-edge ;
312 TYPED: sharp-v ( edge: b-edge sharp?: boolean -- )
313 '[ _ sharp-e ] each-vertex-edge ;
315 TYPED: material-f ( edge: b-edge material -- ) 2drop ;