1 # -*- coding: utf-8 -*-
7 from salome.geom import geomBuilder
13 def demidisk(study, r1, a1, roty=0, solid_thickness=0):
14 if solid_thickness < 1e-7:
19 #geompy = geomBuilder.New(study)
21 O = geompy.MakeVertex(0, 0, 0)
22 OX = geompy.MakeVectorDXDYDZ(1, 0, 0)
23 OY = geompy.MakeVectorDXDYDZ(0, 1, 0)
24 OZ = geompy.MakeVectorDXDYDZ(0, 0, 1)
28 v0 = geompy.MakeVertex(0, 0, 0)
29 v[0] = geompy.MakeVertex(0, r1/2.0, 0)
30 v[1] = geompy.MakeVertex(0, r1, 0)
31 l[1] = geompy.MakeLineTwoPnt(v[0], v[1])
32 l[2] = geompy.MakeRotation(l[1], OX, a1*math.pi/180.0)
33 v[4] = geompy.MakeRotation(v[0], OX, a1*math.pi/180.0)
34 v[6] = geompy.MakeRotation(v[1], OX, a1*math.pi/180.0)
36 v[2] = geompy.MakeVertex(0, -r1/2.0, 0)
37 v[3] = geompy.MakeVertex(0, -r1, 0)
38 l[3] = geompy.MakeLineTwoPnt(v[2], v[3])
39 l[4] = geompy.MakeRotation(l[3], OX, -a1*math.pi/180.0)
40 v[5] = geompy.MakeRotation(v[2], OX, -a1*math.pi/180.0)
41 v[7] = geompy.MakeRotation(v[3], OX, -a1*math.pi/180.0)
43 l[5] = geompy.MakeLineTwoPnt(v[4], v[5])
44 l[6] = geompy.MakeLineTwoPnt(v[0], v[4])
45 l[7] = geompy.MakeLineTwoPnt(v[2], v[5])
47 v7 = geompy.MakeVertex(0, 0, r1)
48 arc1 = geompy.MakeArc(v[1], v7, v[3])
49 l[0] = geompy.MakeLineTwoPnt(v[1], v[3])
50 face1 = geompy.MakeFaceWires([arc1, l[0]], 1)
51 part1 = geompy.MakePartition([face1], [l[2], l[4], l[5], l[6], l[7]], [], [], geompy.ShapeType["FACE"], 0, [], 0, True)
54 # Add some faces corresponding to the solid layer outside
58 v0 = geompy.MakeVertex(0, r1 + solid_thickness, 0)
59 v1 = geompy.MakeRotation(v0, OX, a1*math.pi/180.0)
60 v2 = geompy.MakeRotation(v0, OX, math.pi - (a1*math.pi/180.0))
61 v3 = geompy.MakeRotation(v0, OX, math.pi)
62 v.extend([v0,v1,v3,v2]) # The order is important for use in pointsProjetes
64 l0 = geompy.MakeLineTwoPnt(v[1], v0)
65 l2 = geompy.MakeRotation(l0, OX, a1*math.pi/180.0)
66 l3 = geompy.MakeRotation(l0, OX, math.pi - (a1*math.pi/180.0))
68 face2 = geompy.MakeRevolution(l0, OX, a1*math.pi/180.0)
69 face3 = geompy.MakeRevolution(l2, OX, math.pi - 2*a1*math.pi/180.0)
70 face4 = geompy.MakeRevolution(l3, OX, a1*math.pi/180.0)
71 # --- Compound of the "fluid part" of the divided disk and the additional faces
72 compound1 = geompy.MakeCompound([part1, face2, face3, face4])
74 part1 = geompy.MakeGlueEdges(compound1,1e-7)
77 vrot = [ geompy.MakeRotation(vert, OY, roty*math.pi/180.0) for vert in v ]
78 lrot = [ geompy.MakeRotation(lin, OY, roty*math.pi/180.0) for lin in l ]
79 arc = geompy.MakeRotation(arc1, OY, roty*math.pi/180.0)
80 part = geompy.MakeRotation(part1, OY, roty*math.pi/180.0)
81 return vrot, lrot, arc, part
83 return v, l, arc1, part1
85 def pointsProjetes(study, vref, face):
86 #geompy = geomBuilder.New(study)
87 vface = geompy.ExtractShapes(face, geompy.ShapeType["VERTEX"], True)
88 vord = range(len(vref))
89 plan = geompy.MakePlaneThreePnt(vref[0], vref[1], vref[-1], 10000)
90 vproj = [ geompy.MakeProjection(vert, plan) for vert in vface ]
91 for i,v in enumerate(vproj):
92 dist = [ (geompy.MinDistance(v, vr), j) for j,vr in enumerate(vref) ]
94 if dist[0][0] < 1.e-3:
95 vord[dist[0][1]] = vface[i]
98 def arcsProjetes(study, vf, face):
99 #geompy = geomBuilder.New(study)
100 lface = geompy.ExtractShapes(face, geompy.ShapeType["EDGE"], True)
102 ends = [vf[1], vf[6], vf[7], vf[3]]
105 pts = geompy.ExtractShapes(lf, geompy.ShapeType["VERTEX"], True)
106 if (((geompy.MinDistance(pts[0], ends[i]) < 0.001) and (geompy.MinDistance(pts[1], ends[i+1]) < 0.001)) or
107 ((geompy.MinDistance(pts[1], ends[i]) < 0.001) and (geompy.MinDistance(pts[0], ends[i+1]) < 0.001))):
114 def build_shape(study, r1, r2, h1, h2, solid_thickness=0):
115 """ Builds the final shape """
117 if solid_thickness < 1e-7:
123 geompy = geomBuilder.New(study)
125 O = geompy.MakeVertex(0, 0, 0)
126 OX = geompy.MakeVectorDXDYDZ(1, 0, 0)
127 OY = geompy.MakeVectorDXDYDZ(0, 1, 0)
128 OZ = geompy.MakeVectorDXDYDZ(0, 0, 1)
132 ratio = float(r2)/float(r1)
133 if ratio > (1.0 -seuilmax):
134 a1 = 45.0*(1.0 -ratio)/seuilmax
136 # --- Creation of the jonction faces
137 [faci, sect45, arc1, l1, lord90, lord45, edges, arcextru] = jonction(study, r1, r2,\
140 # The same code is executed again with different external radiuses in order
141 # to get the needed faces and edges to build the solid layer of the pipe
142 [faci_ext, sect45_ext, arc1_ext, l1_ext, \
143 lord90_ext, lord45_ext, edges_ext, arcextru_ext] = jonction(study, r1 + solid_thickness, r2 + solid_thickness,\
145 faces_jonction_ext = []
146 for i,l in enumerate(lord90):
147 faces_jonction_ext.append(geompy.MakeQuad2Edges(lord90[i],lord90_ext[i]))
148 for i in [1, 3, 6, 7]:
149 faces_jonction_ext.append(geompy.MakeQuad2Edges(edges[i],edges_ext[i]))
150 for i,l in enumerate(lord45):
151 faces_jonction_ext.append(geompy.MakeQuad2Edges(lord45[i],lord45_ext[i]))
153 # --- extrusion droite des faces de jonction, pour reconstituer les demi cylindres
155 sect45 = geompy.MakeCompound([sect45]+faces_jonction_ext[-3:])
156 sect45 = geompy.MakeGlueEdges(sect45, 1e-7)
158 extru1 = geompy.MakePrismVecH(sect45, OX, h1+10)
160 faces_coupe = faci[5:]
162 faces_coupe = faci[5:]+faces_jonction_ext[:3]
163 base2 = geompy.MakePartition(faces_coupe, [], [], [], geompy.ShapeType["FACE"], 0, [], 0, True)
164 extru2 = geompy.MakePrismVecH(base2, OZ, h2)
166 # --- partition et coupe
169 demiDisque = geompy.MakeFaceWires([arc1_ext, l1_ext[0]], 1)
171 demiDisque = geompy.MakeFaceWires([arc1, l1[0]], 1)
172 demiCylindre = geompy.MakePrismVecH(demiDisque, OX, h1)
174 box = geompy.MakeBox(0, -2*(r1+h1), -2*(r1+h1), 2*(r1+h1), 2*(r1+h1), 2*(r1+h1))
175 rot = geompy.MakeRotation(box, OY, 45*math.pi/180.0)
177 # NOTE: The following Cut takes almost half of the total execution time
178 garder = geompy.MakeCutList(demiCylindre, [extru2, rot], True)
180 faces_coupe = faci[:5]
182 faces_coupe.extend(faces_jonction_ext[-7:])
183 raccord = geompy.MakePartition([garder], faces_coupe + [arcextru], [], [], geompy.ShapeType["SOLID"], 0, [], 0, True)
184 assemblage = geompy.MakeCompound([raccord, extru1, extru2])
185 assemblage = geompy.MakeGlueFaces(assemblage, 1e-7)
187 box = geompy.MakeBox(-1, -(r1+r2+2*solid_thickness), -1, h1, r1+r2+2*solid_thickness, h2)
189 # NOTE: This operation takes about 1/4 of the total execution time
190 final = geompy.MakeCommonList([box, assemblage], True)
192 # --- Partie inférieure
194 v3, l3, arc3, part3 = demidisk(study, r1, a1, 180.0, solid_thickness)
195 extru3 = geompy.MakePrismVecH(part3, OX, h1)
199 compound = geompy.MakeCompound([final, extru3])
200 plane = geompy.MakePlane(O,OX,2000)
201 compound_mirrored = geompy.MakeMirrorByPlane(compound, plane)
202 final = geompy.MakeCompound([compound, compound_mirrored])
207 def jonction(study, r1, r2, h1, h2, a1):
208 """ Builds the jonction faces and
209 returns what is needed to build the whole pipe
211 #geompy = geomBuilder.New(study)
213 O = geompy.MakeVertex(0, 0, 0)
214 OX = geompy.MakeVectorDXDYDZ(1, 0, 0)
215 OY = geompy.MakeVectorDXDYDZ(0, 1, 0)
216 OZ = geompy.MakeVectorDXDYDZ(0, 0, 1)
218 # --- sections droites des deux demi cylindres avec le partionnement
219 v1, l1, arc1, part1 = demidisk(study, r1, a1, 0.)
220 v2, l2, arc2, part2 = demidisk(study, r2, a1, 90.0)
222 # --- extrusion des sections --> demi cylindres de travail, pour en extraire les sections utilisées au niveau du Té
223 # et enveloppe cylindrique du cylindre principal
225 demicyl1 = geompy.MakePrismVecH(part1, OX, h1)
226 demicyl2 = geompy.MakePrismVecH(part2, OZ, h2)
227 arcextru = geompy.MakePrismVecH(arc1, OX, h1)
229 # --- plan de coupe à 45° sur le cylindre principal,
230 # section à 45° du cylndre principal,
231 # section du cylindre secondaire par l'enveloppe cylindrique du cylindre principal
233 plan1 = geompy.MakePlane(O, OX, 4*r1)
234 planr = geompy.MakeRotation(plan1, OY, 45*math.pi/180.0)
236 sect45 = geompy.MakeCommonList([demicyl1, planr], True)
237 sect90 = geompy.MakeCommonList([demicyl2, arcextru], True)
238 #geompy.addToStudy(sect90, "sect90")
240 # --- liste ordonnée des points projetés sur les deux sections
242 vord45 = pointsProjetes(study, v1, sect45)
243 vord90 = pointsProjetes(study, v2, sect90)
245 # --- identification des projections des trois arcs de cercle, sur les deux sections.
247 lord45 = arcsProjetes(study, vord45, sect45)
248 lord90 = arcsProjetes(study, vord90, sect90)
250 # --- abaissement des quatre points centraux de la section du cylindre secondaire
253 for i in (0, 2, 4, 5):
254 vord90[i] = geompy.TranslateDXDYDZ(vord90[i], 0, 0, dz, True)
255 #geompy.addToStudyInFather(sect90, vord90[i], 'vm%d'%i)
257 # --- création des deux arêtes curvilignes sur l'enveloppe cylindrique du cylindre principal, à la jonction
259 curv = [None for i in range(4)] # liaisons entre les points 1, 3, 6 et 7 des 2 sections
261 curv[0] = geompy.MakeArcCenter(O, vord90[1] , vord45[1], False)
262 curv[1] = geompy.MakeArcCenter(O, vord90[3] , vord45[3], False)
264 lipts = ((6, 6, 4), (7, 7, 5))
265 for i, ipts in enumerate(lipts):
270 plan = geompy.MakePlaneThreePnt(p0, p1, p2, 10000)
271 #geompy.addToStudy(plan, "plan%d"%i)
272 section = geompy.MakeSection(plan, arcextru, True)
273 secpart = geompy.MakePartition([section], [sect45, sect90], [], [], geompy.ShapeType["EDGE"], 0, [], 0, True)
274 #geompy.addToStudy(secpart, "secpart%d"%i)
275 lsec = geompy.ExtractShapes(secpart, geompy.ShapeType["EDGE"], True)
278 pts = geompy.ExtractShapes(l, geompy.ShapeType["VERTEX"], True)
279 if (((geompy.MinDistance(pts[0], p0) < 0.001) and (geompy.MinDistance(pts[1], p1) < 0.001)) or
280 ((geompy.MinDistance(pts[1], p0) < 0.001) and (geompy.MinDistance(pts[0], p1) < 0.001))):
282 #print "curv_%d OK"%i
285 # --- creation des arêtes droites manquantes, des faces et volumes pour les quatre volumes de la jonction
287 edges = [None for i in range(8)]
288 edges[0] = geompy.MakeLineTwoPnt(vord45[0], vord90[0])
290 edges[2] = geompy.MakeLineTwoPnt(vord45[2], vord90[2])
292 edges[4] = geompy.MakeLineTwoPnt(vord45[4], vord90[4])
293 edges[5] = geompy.MakeLineTwoPnt(vord45[5], vord90[5])
297 ed45 = [None for i in range(8)]
298 ed45[0] = geompy.MakeLineTwoPnt(vord45[0], vord45[2])
299 ed45[1] = geompy.MakeLineTwoPnt(vord45[0], vord45[1])
300 ed45[2] = geompy.MakeLineTwoPnt(vord45[4], vord45[6])
301 ed45[3] = geompy.MakeLineTwoPnt(vord45[2], vord45[3])
302 ed45[4] = geompy.MakeLineTwoPnt(vord45[5], vord45[7])
303 ed45[5] = geompy.MakeLineTwoPnt(vord45[4], vord45[5])
304 ed45[6] = geompy.MakeLineTwoPnt(vord45[0], vord45[4])
305 ed45[7] = geompy.MakeLineTwoPnt(vord45[2], vord45[5])
307 ed90 = [None for i in range(8)]
308 ed90[0] = geompy.MakeLineTwoPnt(vord90[0], vord90[2])
309 ed90[1] = geompy.MakeLineTwoPnt(vord90[0], vord90[1])
310 ed90[2] = geompy.MakeLineTwoPnt(vord90[4], vord90[6])
311 ed90[3] = geompy.MakeLineTwoPnt(vord90[2], vord90[3])
312 ed90[4] = geompy.MakeLineTwoPnt(vord90[5], vord90[7])
313 ed90[5] = geompy.MakeLineTwoPnt(vord90[4], vord90[5])
314 ed90[6] = geompy.MakeLineTwoPnt(vord90[0], vord90[4])
315 ed90[7] = geompy.MakeLineTwoPnt(vord90[2], vord90[5])
318 faci.append(geompy.MakeFaceWires([ed45[6], edges[0], ed90[6], edges[4]], 0))
319 faci.append(geompy.MakeFaceWires([ed45[7], edges[2], ed90[7], edges[5]], 0))
320 faci.append(geompy.MakeFaceWires([ed45[2], edges[4], ed90[2], edges[6]], 0))
321 faci.append(geompy.MakeFaceWires([ed45[5], edges[4], ed90[5], edges[5]], 0))
322 faci.append(geompy.MakeFaceWires([ed45[4], edges[5], ed90[4], edges[7]], 0))
323 faci.append(geompy.MakeFaceWires([ed90[0], ed90[6], ed90[5], ed90[7]], 0))
324 faci.append(geompy.MakeFaceWires([ed90[1], ed90[6], ed90[2], lord90[0]], 0))
325 faci.append(geompy.MakeFaceWires([ed90[2], ed90[5], ed90[4], lord90[1]], 0))
326 faci.append(geompy.MakeFaceWires([ed90[3], ed90[7], ed90[4], lord90[2]], 0))
328 return faci, sect45, arc1, l1, lord90, lord45, edges, arcextru
330 def test_t_shape_builder():
331 """For testing purpose"""
333 theStudy = salome.myStudy
334 geompy = geomBuilder.New(theStudy)
335 for r1 in [1., 100.]:
336 for r2 in [0.9*r1, 0.5*r1, 0.1*r1, 0.05*r1]:
337 for thickness in [r1/100., r1/10., r1/2.]:
338 print r1, r2, thickness
342 res = build_shape(theStudy, r1, r2, h1, h2, thickness)
343 geompy.addToStudy(res, "res_%f_%f_%f"%(r1,r2, thickness))
345 print "problem with res_%f_%f_%f"%(r1,r2, thickness)
347 if __name__=="__main__":
348 """For testing purpose"""
349 test_t_shape_builder()