Method getPointsEdgeVert

src/Mod/TechDraw/App/DrawViewDimension.cpp:1020–1075

}

pointPair DrawViewDimension::getPointsEdgeVert(ReferenceVector references)
{
    App::DocumentObject* refObject = references.front().getObject();
    int iSubelement0 = DrawUtil::getIndexFromName(references.at(0).getSubName());
    int iSubelement1 = DrawUtil::getIndexFromName(references.at(1).getSubName());
    if (refObject->isDerivedFrom<TechDraw::DrawViewPart>()
        && !references.at(0).getSubName().empty()) {
        // this is a 2d object (a DVP + subelements)
        TechDraw::BaseGeomPtr edge;
        TechDraw::VertexPtr vertex;
        if (DrawUtil::getGeomTypeFromName(references.at(0).getSubName()) == "Edge") {
            edge = getViewPart()->getGeomByIndex(iSubelement0);
            vertex = getViewPart()->getProjVertexByIndex(iSubelement1);
        }
        else {
            edge = getViewPart()->getGeomByIndex(iSubelement1);
            vertex = getViewPart()->getProjVertexByIndex(iSubelement0);
        }
        if (!vertex || !edge) {
            throw Base::RuntimeError("Missing geometry for dimension (4)");
        }

        // get curve from edge
        double start{0.0};  // curve parameters
        double end{0.0};  // curve parameters
        const Handle(Geom_Surface) hplane = new Geom_Plane(gp_Ax3());
        auto const occCurve =
            BRep_Tool::CurveOnPlane(edge->getOCCEdge(), hplane, TopLoc_Location(), start, end);
        auto const occPoint = gp_Pnt2d(vertex->x(), vertex->y());
        // project point on curve
        auto projector = Geom2dAPI_ProjectPointOnCurve(occPoint, occCurve);
        if (projector.NbPoints() > 0) {
            auto p1 = Base::Vector3d(vertex->x(), vertex->y(), 0.0);
            auto p2 =
                Base::Vector3d(projector.NearestPoint().X(), projector.NearestPoint().Y(), 0.0);
            pointPair result = pointPair(p1, p2);
            result.setExtensionLine(closestPoints(edge->getOCCEdge(), vertex->getOCCVertex()));
            return result;
        }
            // unable to project
            return closestPoints(edge->getOCCEdge(), vertex->getOCCVertex());
    }

    // this is a 3d object
    TopoDS_Shape geometry0 = references.at(0).getGeometry();
    TopoDS_Shape geometry1 = references.at(1).getGeometry();
    if (geometry0.IsNull() || geometry1.IsNull() || geometry0.ShapeType() != TopAbs_VERTEX
        || geometry1.ShapeType() != TopAbs_VERTEX) {
        throw Base::RuntimeError("Geometry for dimension reference is null.");
    }

    pointPair pts = closestPoints(geometry0, geometry1);
    pts.move(getViewPart()->getCurrentCentroid());
    pts.project(getViewPart());
    return pts;
}

arcPoints DrawViewDimension::getArcParameters(ReferenceVector references)