595fc118e3
==================================================== This function takes parameters named GeoId, which evoke the Sketcher GeoId and which indeed are used by the sketcher. However, these indices are just indices of the provided geometry list. Therefore: 1. The are never negative (no matter if a corresponding Sketcher GeoId is external or not). 2. They do not have reserved indices for axes. 3. Most importantly, not found GeoId1 and GeoId2 are coded as -1, which for the Sketcher has a well defined meaning (axis), whereas the Sketcher uses Constraint::GeoUndef as undefined or not present/ not found index, which currently is -2000. For these reasons, it was judged appropriate to rename the parameters and documentation to emphasise that this function is unrelated and dettached from any Sketcher knowledge, and that indices are just normal indices of a vector.
306 lines
12 KiB
C++
306 lines
12 KiB
C++
/***************************************************************************
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* Copyright (c) 2008 Jürgen Riegel <juergen.riegel@web.de> *
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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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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <TopoDS_Shape.hxx>
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# include <TopoDS_Face.hxx>
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# include <TopoDS.hxx>
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# include <gp_Pln.hxx>
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# include <gp_Ax1.hxx>
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# include <gp_Pnt.hxx>
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# include <gp_Dir.hxx>
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# include <GeomAPI_ProjectPointOnSurf.hxx>
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# include <Geom_Plane.hxx>
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# include <Geom2d_Curve.hxx>
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# include <Geom2dAPI_InterCurveCurve.hxx>
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# include <Geom2dAPI_ProjectPointOnCurve.hxx>
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# include <GeomAPI.hxx>
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# include <BRepAdaptor_Surface.hxx>
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# include <IntRes2d_IntersectionSegment.hxx>
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#endif
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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#include <Base/Console.h>
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#include <Base/Exception.h>
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#include <Base/Reader.h>
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#include <App/Property.h>
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#include <App/PropertyLinks.h>
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#include "Part2DObject.h"
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#include "Geometry.h"
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#include "DatumFeature.h"
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#include <App/FeaturePythonPyImp.h>
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#include <Mod/Part/App/Part2DObjectPy.h>
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using namespace Part;
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const int Part2DObject::H_Axis = -1;
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const int Part2DObject::V_Axis = -2;
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const int Part2DObject::N_Axis = -3;
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PROPERTY_SOURCE_WITH_EXTENSIONS(Part::Part2DObject, Part::Feature)
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Part2DObject::Part2DObject()
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{
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AttachExtension::initExtension(this);
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this->setAttacher(new Attacher::AttachEnginePlane);
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}
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App::DocumentObjectExecReturn *Part2DObject::execute(void)
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{
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return Feature::execute();
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}
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void Part2DObject::transformPlacement(const Base::Placement &transform)
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{
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if (Support.getValues().size() > 0) {
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//part->transformPlacement(transform);
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positionBySupport();
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} else {
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GeoFeature::transformPlacement(transform);
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}
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}
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int Part2DObject::getAxisCount(void) const
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{
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return 0;
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}
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Base::Axis Part2DObject::getAxis(int axId) const
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{
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if (axId == H_Axis) {
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return Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(1,0,0));
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}
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else if (axId == V_Axis) {
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return Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(0,1,0));
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}
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else if (axId == N_Axis) {
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return Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(0,0,1));
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}
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return Base::Axis();
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}
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bool Part2DObject::seekTrimPoints(const std::vector<Geometry *> &geomlist,
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int geometryIndex, const Base::Vector3d &point,
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int &geometryIndex1, Base::Vector3d &intersect1,
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int &geometryIndex2, Base::Vector3d &intersect2)
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{
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if ( geometryIndex >= int(geomlist.size()))
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return false;
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gp_Pln plane(gp_Pnt(0,0,0),gp_Dir(0,0,1));
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Standard_Boolean periodic=Standard_False;
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double period = 0;
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Handle(Geom2d_Curve) primaryCurve;
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Handle(Geom_Geometry) geom = (geomlist[geometryIndex])->handle();
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Handle(Geom_Curve) curve3d = Handle(Geom_Curve)::DownCast(geom);
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if (curve3d.IsNull())
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return false;
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else {
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primaryCurve = GeomAPI::To2d(curve3d, plane);
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periodic = primaryCurve->IsPeriodic();
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if (periodic)
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period = primaryCurve->Period();
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}
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// create the intersector and projector functions
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Geom2dAPI_InterCurveCurve Intersector;
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Geom2dAPI_ProjectPointOnCurve Projector;
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// find the parameter of the picked point on the primary curve
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Projector.Init(gp_Pnt2d(point.x, point.y), primaryCurve);
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double pickedParam = Projector.LowerDistanceParameter();
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// find intersection points
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geometryIndex1 = -1;
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geometryIndex2 = -1;
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double param1=-1e10,param2=1e10;
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gp_Pnt2d p1,p2;
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Handle(Geom2d_Curve) secondaryCurve;
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for (int id=0; id < int(geomlist.size()); id++) {
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// #0000624: Trim tool doesn't work with construction lines
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if (id != geometryIndex/* && !geomlist[id]->Construction*/) {
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geom = (geomlist[id])->handle();
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curve3d = Handle(Geom_Curve)::DownCast(geom);
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if (!curve3d.IsNull()) {
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secondaryCurve = GeomAPI::To2d(curve3d, plane);
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// perform the curves intersection
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std::vector<gp_Pnt2d> points;
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// #2463 Check for endpoints of secondarycurve on primary curve
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// If the OCCT Intersector should detect endpoint tangency when trimming, then
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// this is just a work-around until that bug is fixed.
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// https://www.freecadweb.org/tracker/view.php?id=2463
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// https://tracker.dev.opencascade.org/view.php?id=30217
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if (geomlist[id]->getTypeId().isDerivedFrom(Part::GeomBoundedCurve::getClassTypeId())) {
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Part::GeomBoundedCurve * bcurve = static_cast<Part::GeomBoundedCurve *>(geomlist[id]);
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points.emplace_back(bcurve->getStartPoint().x,bcurve->getStartPoint().y);
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points.emplace_back(bcurve->getEndPoint().x,bcurve->getEndPoint().y);
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}
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Intersector.Init(primaryCurve, secondaryCurve, 1.0e-12);
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for (int i=1; i <= Intersector.NbPoints(); i++)
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points.push_back(Intersector.Point(i));
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if (Intersector.NbSegments() > 0) {
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const Geom2dInt_GInter& gInter = Intersector.Intersector();
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for (int i=1; i <= gInter.NbSegments(); i++) {
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const IntRes2d_IntersectionSegment& segm = gInter.Segment(i);
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if (segm.HasFirstPoint()) {
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const IntRes2d_IntersectionPoint& fp = segm.FirstPoint();
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points.push_back(fp.Value());
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}
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if (segm.HasLastPoint()) {
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const IntRes2d_IntersectionPoint& fp = segm.LastPoint();
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points.push_back(fp.Value());
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}
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}
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}
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for (auto p : points) {
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// get the parameter of the intersection point on the primary curve
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Projector.Init(p, primaryCurve);
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if (Projector.NbPoints()<1 || Projector.LowerDistance() > Precision::Confusion())
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continue;
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double param = Projector.LowerDistanceParameter();
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if (periodic) {
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// transfer param into the interval (pickedParam-period pickedParam]
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param = param - period * ceil((param-pickedParam) / period);
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if (param > param1) {
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param1 = param;
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p1 = p;
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geometryIndex1 = id;
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}
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param -= period; // transfer param into the interval (pickedParam pickedParam+period]
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if (param < param2) {
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param2 = param;
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p2 = p;
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geometryIndex2 = id;
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}
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}
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else if (param < pickedParam && param > param1) {
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param1 = param;
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p1 = p;
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geometryIndex1 = id;
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}
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else if (param > pickedParam && param < param2) {
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param2 = param;
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p2 = p;
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geometryIndex2 = id;
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}
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}
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}
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}
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}
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if (periodic) {
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// in case both points coincide, cancel the selection of one of both
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if (fabs(param2-param1-period) < 1e-10) {
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if (param2 - pickedParam >= pickedParam - param1)
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geometryIndex2 = -1;
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else
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geometryIndex1 = -1;
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}
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}
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if ( geometryIndex1 < 0 && geometryIndex2 < 0)
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return false;
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if ( geometryIndex1 >= 0)
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intersect1 = Base::Vector3d(p1.X(),p1.Y(),0.f);
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if ( geometryIndex2 >= 0)
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intersect2 = Base::Vector3d(p2.X(),p2.Y(),0.f);
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return true;
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}
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void Part2DObject::acceptGeometry()
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{
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// implemented in sub-classes
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}
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void Part2DObject::Restore(Base::XMLReader &reader)
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{
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Part::Feature::Restore(reader);
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}
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void Part2DObject::handleChangedPropertyType(Base::XMLReader &reader,
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const char * TypeName,
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App::Property * prop)
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{
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//override generic restoration to convert Support property from PropertyLinkSub to PropertyLinkSubList
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if (prop->isDerivedFrom(App::PropertyLinkSubList::getClassTypeId())) {
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//reading legacy Support - when the Support could only be a single flat face.
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App::PropertyLinkSub tmp;
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if (0 == strcmp(tmp.getTypeId().getName(),TypeName)) {
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tmp.setContainer(this);
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tmp.Restore(reader);
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static_cast<App::PropertyLinkSubList*>(prop)->setValue(tmp.getValue(), tmp.getSubValues());
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}
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this->MapMode.setValue(Attacher::mmFlatFace);
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}
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}
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void Part2DObject::handleChangedPropertyName(Base::XMLReader &reader,
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const char * TypeName,
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const char *PropName)
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{
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extHandleChangedPropertyName(reader, TypeName, PropName); // AttachExtension
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}
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// Python Drawing feature ---------------------------------------------------------
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namespace App {
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/// @cond DOXERR
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PROPERTY_SOURCE_TEMPLATE(Part::Part2DObjectPython, Part::Part2DObject)
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template<> const char* Part::Part2DObjectPython::getViewProviderName(void) const {
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return "PartGui::ViewProvider2DObjectPython";
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}
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template<> PyObject* Part::Part2DObjectPython::getPyObject(void) {
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if (PythonObject.is(Py::_None())) {
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// ref counter is set to 1
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PythonObject = Py::Object(new FeaturePythonPyT<Part::Part2DObjectPy>(this),true);
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}
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return Py::new_reference_to(PythonObject);
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}
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/// @endcond
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// explicit template instantiation
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template class PartExport FeaturePythonT<Part::Part2DObject>;
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}
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