mirror of
https://git.salome-platform.org/gitpub/modules/geom.git
synced 2024-11-11 16:19:17 +05:00
88 lines
3.3 KiB
Python
88 lines
3.3 KiB
Python
# Shape Proximity between faces
|
|
|
|
import math
|
|
import salome
|
|
salome.salome_init_without_session()
|
|
import GEOM
|
|
from salome.geom import geomBuilder
|
|
geompy = geomBuilder.New()
|
|
|
|
O = geompy.MakeVertex(0, 0, 0)
|
|
OX = geompy.MakeVectorDXDYDZ(1, 0, 0)
|
|
OY = geompy.MakeVectorDXDYDZ(0, 1, 0)
|
|
OZ = geompy.MakeVectorDXDYDZ(0, 0, 1)
|
|
|
|
# Case 1: cylinder and sphere (different coarse and fine proximities)
|
|
OCyl = geompy.MakeVertex(0, -5, 15)
|
|
Cyl = geompy.MakeCylinder(OCyl, OY, 3, 10, "Cyl")
|
|
AX1 = geompy.MakeTranslation(OX, 0, 0, 15, "AX1")
|
|
geompy.Rotate(Cyl, AX1, -20.0*math.pi/180.0)
|
|
Cyl_face = geompy.SubShapeAllSortedCentres(Cyl, geompy.ShapeType["FACE"], "Face")[1]
|
|
Sph = geompy.MakeSphereR(10, "Sph")
|
|
Box_1 = geompy.MakeBoxDXDYDZ(40, 40, 27.071067)
|
|
Translation_1 = geompy.MakeTranslation(Box_1, -20, -20, -20)
|
|
Cut_1 = geompy.MakeCutList(Sph, [Translation_1], True, "Cut_1")
|
|
Sph_face = geompy.SubShapeAllSortedCentres(Cut_1, geompy.ShapeType["FACE"], "Face")[1]
|
|
|
|
pcalc = geompy.ShapeProximity()
|
|
#pcalc.setShapes(Cyl_face, Sph_face)
|
|
pcalc.setShapes(Sph_face, Cyl_face)
|
|
p_coarse = pcalc.coarseProximity()
|
|
p_fine = pcalc.preciseProximity()
|
|
|
|
assert(math.fabs(p_coarse - 9.8649933) < 1.e-7)
|
|
assert(math.fabs(p_fine - 7.6984631) < 1.e-7)
|
|
|
|
geompy.MakeVertex(0, 2.63303, 17.2342, "p1")
|
|
geompy.MakeVertex(0, 0, 10, "p2")
|
|
|
|
print("With sampling 0: coarse = {} ; fine = {}".format(p_coarse, p_fine))
|
|
|
|
pcalc.setSampling(Cyl_face, 100) # number of sample points for the first shape
|
|
pcalc.setSampling(Sph_face, 100) # number of sample points for the second shape
|
|
p_coarse = pcalc.coarseProximity()
|
|
p_fine = pcalc.preciseProximity()
|
|
|
|
print("With sampling 100: coarse = {} ; fine = {}".format(p_coarse, p_fine))
|
|
|
|
pcalc.setSampling(Cyl_face, 1000) # number of sample points for the first shape
|
|
pcalc.setSampling(Sph_face, 1000) # number of sample points for the second shape
|
|
p_coarse = pcalc.coarseProximity()
|
|
p_fine = pcalc.preciseProximity()
|
|
|
|
print("With sampling 1000: coarse = {} ; fine = {}".format(p_coarse, p_fine))
|
|
|
|
# Case 2: conical and planar faces
|
|
Cone_1 = geompy.MakeConeR1R2H(100, 0, 300)
|
|
Cone_1_face_3 = geompy.GetSubShape(Cone_1, [3])
|
|
Cone_1_wire_4 = geompy.GetSubShape(Cone_1, [4])
|
|
Face_1 = geompy.MakeFaceFromSurface(Cone_1_face_3, Cone_1_wire_4, "Face_1")
|
|
Face_1_edge_5 = geompy.GetSubShape(Face_1, [5])
|
|
Face_2 = geompy.MakeFaceObjHW(Face_1_edge_5, 200, 200)
|
|
geompy.Rotate(Face_2, OY, 90*math.pi/180.0)
|
|
Face_2_vertex_7 = geompy.GetSubShape(Face_2, [7])
|
|
Translation_1 = geompy.MakeTranslationTwoPoints(Face_2, Face_2_vertex_7, O, "Translation_1")
|
|
|
|
shape1 = Face_1
|
|
shape2 = Translation_1
|
|
|
|
# perform proximity calculation with the default parameters
|
|
p1 = geompy.ShapeProximity()
|
|
proximity1 = p1.proximity(shape1, shape2)
|
|
|
|
# perform proximity calculation with custom parameters
|
|
p2 = geompy.ShapeProximity()
|
|
p2.setShapes(shape1, shape2)
|
|
p2.setSampling(shape1, 100) # number of sample points for the first shape
|
|
p2.setSampling(shape2, 40) # number of sample points for the second shape
|
|
proximity2_coarse = p2.coarseProximity()
|
|
proximity2_fine = p2.preciseProximity()
|
|
|
|
assert(math.fabs(proximity1 - proximity2_fine) < 1.e-7)
|
|
assert(math.fabs(proximity2_coarse - 127.1141386) < 1.e-7)
|
|
#assert(math.fabs(proximity2_fine - 94.8683298) < 1.e-7)
|
|
assert(math.fabs(proximity2_fine - 127.1141386) < 1.e-7)
|
|
|
|
geompy.MakeVertex(0, 0, 300, "p3")
|
|
geompy.MakeVertex(-63.2456, 0, 189.737, "p4")
|