3e7830c21b
The first and last knots (which are often also poles) of a B-Spline are not represented in sketcher as knots, but as end points of the curve. This creates a problem when we want to change the multiplicities of those knots. As a workaround, these points are treated differently. NOTE: While it is technically possible to have end knots in a non-periodic spline with degree <= degree of the curve, `Geom_BSplineCurve::RemoveKnot()` fails for the first and last knots, so we are stuck with this. So, this commit effectively only makes knot multiplicity change possible for periodic splines. For non-periodic splines this commit just changes the confusing "no knot is selected" message to an unhelpful "multiplicity modification failed".
96 lines
4.6 KiB
C++
96 lines
4.6 KiB
C++
/***************************************************************************
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* Copyright (c) 2021 Abdullah Tahiri <abdullah.tahiri.yo@gmail.com> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef SKETCHERGUI_Recompute_H
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#define SKETCHERGUI_Recompute_H
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namespace Sketcher {
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enum class PointPos : int;
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class SketchObject;
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}
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namespace SketcherGui {
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/// This function tries to auto-recompute the active document if the option
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/// is set in the user parameter. If the option is not set nothing will be done
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/// @return true if a recompute was undertaken, false if not.
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bool tryAutoRecompute(Sketcher::SketchObject* obj);
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/// Same as the other overload, but also returns whether redundants shall be removed or not
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bool tryAutoRecompute(Sketcher::SketchObject* obj, bool &autoremoveredundants);
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/// This function tries to auto-recompute as tryAutoRecompute. If tryAutoRecompute
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/// is not enabled, then it solves the SketchObject.
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void tryAutoRecomputeIfNotSolve(Sketcher::SketchObject* obj);
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/// Release any currently-active handler for the document.
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/// Returns true if a handler was released, and false if not
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bool ReleaseHandler(Gui::Document* doc);
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std::string getStrippedPythonExceptionString(const Base::Exception&);
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void getIdsFromName(const std::string &name, const Sketcher::SketchObject* Obj, int &GeoId, Sketcher::PointPos &PosId);
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bool checkBothExternal(int GeoId1, int GeoId2);
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bool checkBothExternalOrBSplinePoints(const Sketcher::SketchObject* Obj,int GeoId1, int GeoId2);
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bool isPointOrSegmentFixed(const Sketcher::SketchObject* Obj, int GeoId);
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bool areBothPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj, int GeoId1, int GeoId2);
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bool areAllPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj, int GeoId1, int GeoId2, int GeoId3);
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bool inline isVertex(int GeoId, Sketcher::PointPos PosId);
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bool inline isEdge(int GeoId, Sketcher::PointPos PosId);
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bool isSimpleVertex(const Sketcher::SketchObject* Obj, int GeoId, Sketcher::PointPos PosId);
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/// Checks if `GeoId` corresponds to a B-Spline knot
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bool isBsplineKnot(const Sketcher::SketchObject* Obj, int GeoId);
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/// Checks if the (`GeoId`, `PosId`) pair corresponds to a B-Spline knot, including first and last knots
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bool isBsplineKnotOrEndPoint(const Sketcher::SketchObject* Obj, int GeoId, Sketcher::PointPos PosId);
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bool IsPointAlreadyOnCurve(int GeoIdCurve, int GeoIdPoint, Sketcher::PointPos PosIdPoint, Sketcher::SketchObject* Obj);
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bool isBsplinePole(const Part::Geometry * geo);
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bool isBsplinePole(const Sketcher::SketchObject* Obj, int GeoId);
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/// Checks whether there is a constraint of the given type with a First element geoid and a FirstPos PosId
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bool checkConstraint(const std::vector< Sketcher::Constraint * > &vals, Sketcher::ConstraintType type, int geoid, Sketcher::PointPos pos);
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inline bool isVertex(int GeoId, Sketcher::PointPos PosId)
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{
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return (GeoId != Sketcher::GeoEnum::GeoUndef && PosId != Sketcher::PointPos::none);
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}
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inline bool isEdge(int GeoId, Sketcher::PointPos PosId)
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{
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return (GeoId != Sketcher::GeoEnum::GeoUndef && PosId == Sketcher::PointPos::none);
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}
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}
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#endif // SKETCHERGUI_Recompute_H
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