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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
// Created on: 1995-02-20
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// Created by: Jacques GOUSSARD
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// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <BRep_Tool.hxx>
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#include <BRepTools.hxx>
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#include <Draft.hxx>
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#include <ElSLib.hxx>
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#include <Geom_ConicalSurface.hxx>
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#include <Geom_CylindricalSurface.hxx>
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#include <Geom_Plane.hxx>
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#include <Geom_RectangularTrimmedSurface.hxx>
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#include <Geom_Surface.hxx>
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#include <gp_Dir.hxx>
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#include <Precision.hxx>
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#include <Standard_DomainError.hxx>
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#include <TopoDS_Face.hxx>
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//=======================================================================
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//function : Angle
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//purpose :
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//=======================================================================
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Standard_Real Draft::Angle(const TopoDS_Face& F,
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const gp_Dir& D)
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{
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TopLoc_Location Lo;
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Handle(Geom_Surface) S = BRep_Tool::Surface(F,Lo);
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Handle(Standard_Type) TypeS = S->DynamicType();
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if (TypeS == STANDARD_TYPE(Geom_RectangularTrimmedSurface)) {
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S = Handle(Geom_RectangularTrimmedSurface)::DownCast(S)->BasisSurface();
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TypeS = S->DynamicType();
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}
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if (TypeS != STANDARD_TYPE(Geom_Plane) &&
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TypeS != STANDARD_TYPE(Geom_ConicalSurface) &&
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TypeS != STANDARD_TYPE(Geom_CylindricalSurface)) {
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Standard_DomainError::Raise();
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}
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Standard_Real Angle;
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S = Handle(Geom_Surface)::DownCast(S->Transformed(Lo.Transformation()));
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if (TypeS == STANDARD_TYPE(Geom_Plane)) {
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gp_Ax3 ax3(Handle(Geom_Plane)::DownCast(S)->Pln().Position());
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gp_Vec normale(ax3.Direction());
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if (!ax3.Direct()) {
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normale.Reverse();
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}
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if (F.Orientation() == TopAbs_REVERSED) {
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normale.Reverse();
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}
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Angle = ASin(normale.Dot(D));
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}
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else if (TypeS == STANDARD_TYPE(Geom_CylindricalSurface)) {
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gp_Cylinder Cy(Handle(Geom_CylindricalSurface)::DownCast(S)->Cylinder());
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Standard_Real testdir = D.Dot(Cy.Axis().Direction());
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if (Abs(testdir) <= 1.-Precision::Angular()) {
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Standard_DomainError::Raise();
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}
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Angle = 0.;
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}
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else { // STANDARD_TYPE(Geom_ConicalSurface)
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gp_Cone Co(Handle(Geom_ConicalSurface)::DownCast(S)->Cone());
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Standard_Real testdir = D.Dot(Co.Axis().Direction());
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if (Abs(testdir) <= 1.-Precision::Angular()) {
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Standard_DomainError::Raise();
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}
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Standard_Real umin,umax,vmin,vmax;
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BRepTools::UVBounds(F,umin,umax,vmin,vmax);
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gp_Pnt ptbid;
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gp_Vec d1u,d1v;
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ElSLib::D1(umin+umax/2.,vmin+vmax/2.,Co,ptbid,d1u,d1v);
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d1u.Cross(d1v);
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d1u.Normalize();
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if (F.Orientation() == TopAbs_REVERSED) {
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d1u.Reverse();
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}
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Angle = ASin(d1u.Dot(D));
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}
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return Angle;
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}
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