pythonCascade Sample Problems
Geometry: Distance
between geometric objects
array1 = []
array1.append(gp_Pnt (-5,1,2))
array1.append(gp_Pnt(-5,2,2))
array1.append(gp_Pnt(-5.3,3,1))
array1.append(gp_Pnt(-5,4,1))
array1.append(gp_Pnt(-5,5,2))
SPL1 =
GeomAPI_PointsToBSpline(array1).Curve()
array2 =
[]
array2.append(gp_Pnt(4,1,2))
array2.append(gp_Pnt(4,2,2))
array2.append(gp_Pnt(3.7,3,1))
array2.append(gp_Pnt(4,4,1))
array2.append(gp_Pnt(4,5,2))
SPL2 =
GeomAPI_PointsToBSpline(array2).Curve()
Type =
GeomFill_StretchStyle
aGeomFill1 =
GeomFill_BSplineCurves(SPL1,SPL2,Type)
aSurf1 =
aGeomFill1.Surface()
array3 = []
array3.append([gp_Pnt (-4,-4,5),gp_Pnt (-4,-2,5),gp_Pnt (-4,0,4),gp_Pnt
(-4,2,5),gp_Pnt (-4,4,5)])
array3.append([gp_Pnt (-2,-4,4),gp_Pnt (-2,-2,4),gp_Pnt (-2,0,4),gp_Pnt
(-2,2,4),gp_Pnt (-2,5,4)])
array3.append([gp_Pnt (0,-4,3.5),gp_Pnt (0,-2,3.5),gp_Pnt
(0,0,3.5),gp_Pnt (0,2,3.5),gp_Pnt (0,5,3.5)])
array3.append([gp_Pnt (2,-4,4),gp_Pnt (2,-2,4),gp_Pnt (2,0,3.5),gp_Pnt
(2,2,5),gp_Pnt (2,5,4)])
array3.append([gp_Pnt (4,-4,5),gp_Pnt (4,-2,5),gp_Pnt (4,0,5),gp_Pnt
(4,2,6),gp_Pnt (4,5,5)])
aSurf2 =
GeomAPI_PointsToBSplineSurface(array3).Surface()
ESS =
GeomAPI_ExtremaSurfaceSurface(aSurf1,aSurf2)
dist =
ESS.LowerDistance()
P1,P2 =
ESS.NearestPoints()
NbExtrema =
ESS.NbExtrema()
for k in
range(1,NbExtrema+1):
P3,P4 =
ESS.Points(k)
aCurve=
GC_MakeSegment(P3,P4).Value()
self.DisplayCurve(aCurve,1)
self.DisplaySurface(aSurf1,1,color = Quantity_NOC_GREEN)
self.DisplaySurface(aSurf2,1,color = Quantity_NOC_HOTPINK)
self.DisplayCurve(SPL1,0,Quantity_NOC_RED)
self.DisplayCurve(SPL2,0,Quantity_NOC_AZURE)
self.DisplayPoint(P1,"P1",0,0,0,0,0.5)
self.DisplayPoint(P2,"P2",0,0,0,0,0.5)