475 lines
13 KiB
C++
475 lines
13 KiB
C++
/****************************************************************************
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**
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* Draw circle by foci and a point on circle
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Copyright (C) 2012 Dongxu Li (dongxuli2011@gmail.com)
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Copyright (C) 2011 R. van Twisk (librecad@rvt.dds.nl)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**********************************************************************/
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#include <QAction>
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#include <QMouseEvent>
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#include "rs_actiondrawcircletan1_2p.h"
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#include "rs_dialogfactory.h"
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#include "rs_graphicview.h"
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#include "rs_commandevent.h"
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#include "rs_arc.h"
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#include "rs_circle.h"
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#include "rs_line.h"
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#include "rs_point.h"
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#include "lc_quadratic.h"
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#include "rs_coordinateevent.h"
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#include "rs_preview.h"
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#include "rs_debug.h"
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struct RS_ActionDrawCircleTan1_2P::Points {
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std::vector<RS_Vector> points;
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RS_CircleData cData;
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RS_Vector coord;
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double radius = 0.;
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bool valid = false;
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//keep a list of centers found
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RS_VectorSolutions centers;
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};
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/**
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* Constructor.
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*
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*/
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RS_ActionDrawCircleTan1_2P::RS_ActionDrawCircleTan1_2P(
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RS_EntityContainer& container,
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RS_GraphicView& graphicView)
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:RS_PreviewActionInterface("Draw tangent circle 2P",
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container, graphicView)
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,circle(nullptr)
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,pPoints(new Points{})
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{
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actionType = RS2::ActionDrawCircleTan1_2P;
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}
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RS_ActionDrawCircleTan1_2P::~RS_ActionDrawCircleTan1_2P() = default;
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void RS_ActionDrawCircleTan1_2P::init(int status) {
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RS_PreviewActionInterface::init(status);
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if(status>=0) {
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RS_Snapper::suspend();
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}
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if (status<=SetCircle1) {
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if(circle) {
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if(circle->isHighlighted()){
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circle->setHighlighted(false);
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graphicView->redraw(RS2::RedrawDrawing);
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}
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}
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pPoints->points.clear();
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}
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}
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void RS_ActionDrawCircleTan1_2P::finish(bool updateTB){
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if (circle) {
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circle->setHighlighted(false);
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graphicView->redraw(RS2::RedrawDrawing);
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}
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RS_PreviewActionInterface::finish(updateTB);
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}
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void RS_ActionDrawCircleTan1_2P::trigger() {
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// std::cout<<__FILE__<<" : "<<__func__<<" : line "<<__LINE__<<std::endl;
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// std::cout<<"begin"<<std::endl;
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RS_PreviewActionInterface::trigger();
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RS_Circle* c=new RS_Circle(container, pPoints->cData);
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container->addEntity(c);
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// upd. undo list:
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if (document) {
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document->startUndoCycle();
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document->addUndoable(c);
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document->endUndoCycle();
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}
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circle->setHighlighted(false);
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graphicView->redraw(RS2::RedrawDrawing);
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// drawSnapper();
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setStatus(SetCircle1);
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RS_DEBUG->print("RS_ActionDrawCircleTan1_2P::trigger():"
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" entity added: %d", c->getId());
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}
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void RS_ActionDrawCircleTan1_2P::mouseMoveEvent(QMouseEvent* e) {
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RS_DEBUG->print("RS_ActionDrawCircleTan1_2P::mouseMoveEvent begin");
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switch(getStatus() ){
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case SetPoint1:
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{
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RS_Vector&& mouse=snapPoint(e);
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pPoints->points.clear();
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pPoints->points.push_back(mouse);
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switch(circle->rtti()){
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case RS2::EntityArc:
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case RS2::EntityCircle:
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{
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RS_Vector const& dvp=mouse - circle->getCenter();
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double rvp=dvp.magnitude();
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if(rvp<RS_TOLERANCE2) break;
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pPoints->cData.radius=(circle->getRadius()+rvp)*0.5;
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pPoints->cData.center=circle->getCenter()+dvp*(pPoints->cData.radius/rvp);
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pPoints->cData.radius=fabs(circle->getRadius()-pPoints->cData.radius);
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}
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break;
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case RS2::EntityLine:
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{
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RS_Line* line=static_cast<RS_Line*>(circle);
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RS_Vector&& vp=line->getNearestPointOnEntity(pPoints->points[0],false);
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if(vp.valid){
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pPoints->cData.center=(vp+pPoints->points[0])*0.5;
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pPoints->cData.radius=vp.distanceTo(pPoints->cData.center);
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}
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}
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break;
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default:
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return;
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}
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deletePreview();
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RS_Circle* e=new RS_Circle(preview.get(), pPoints->cData);
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preview->addEntity(e);
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drawPreview();
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break;
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}
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case SetPoint2: {
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RS_Vector const& mouse=snapPoint(e);
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pPoints->points.resize(1);
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pPoints->points.push_back(mouse);
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deletePreview();
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pPoints->coord=mouse;
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if (!getCenters()) return;
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if (preparePreview()) {
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RS_Circle* e=new RS_Circle(preview.get(), pPoints->cData);
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preview->addEntity(e);
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drawPreview();
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}
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break;
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}
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case SetCenter: {
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// RS_Entity* en = catchEntity(e, enTypeList, RS2::ResolveAll);
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pPoints->coord= graphicView->toGraph(e->x(), e->y());
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// circles[getStatus()]=static_cast<RS_Line*>(en);
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if(preparePreview()) {
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deletePreview();
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RS_Circle* e=new RS_Circle(preview.get(), pPoints->cData);
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for(size_t i=0; i<pPoints->centers.size(); ++i)
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preview->addEntity(new RS_Point(preview.get(), RS_PointData(pPoints->centers.at(i))));
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preview->addEntity(e);
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// double r0=cData.radius*0.1;
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// if(centers.size()>1)
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// for(unsigned i=0; i< centers.size(); ++i){
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// RS_DEBUG->print(RS_Debug::D_ERROR, "center %d: (%g, %g)\n",i,centers.at(i).x,centers.at(i).y);
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// preview->addEntity(new RS_Circle(preview, RS_CircleData(centers.at(i), r0)));
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// }
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drawPreview();
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}
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}
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break;
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default:
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break;
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}
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RS_DEBUG->print("RS_ActionDrawCircleTan1_2P::mouseMoveEvent end");
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}
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//void RS_ActionDrawCircleTan1_2P::setRadius(const double& r)
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//{
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// cData.radius=r;
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// if(getStatus() == SetPoint2){
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// RS_Circle c(nullptr,cData);
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// centers=c.createTan1_2P(circle,cData.radius);
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// }
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//}
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bool RS_ActionDrawCircleTan1_2P::getCenters(){
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pPoints->centers.clear();
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if(getStatus() < SetPoint2) return false;
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LC_Quadratic lc0(circle, pPoints->points[0]);
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// LC_Quadratic lc1(circle, points[1]);
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LC_Quadratic lc1(pPoints->points[1], pPoints->points[0]);
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auto list=LC_Quadratic::getIntersection(lc0,lc1);
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// DEBUG_HEADER
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// std::cout<<"intersections : "<<list<<std::endl;
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for(const RS_Vector& vp: list){
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//when taking the path of center of tangent circle passing a given point,
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// the center is never closer to the circle center than the point, for internal and external tangent circles
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double ds0=vp.distanceTo(pPoints->points[0]);
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// double ds1=vp.distanceTo(points[1]);
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// if( fabs(ds0 - ds1)> RS_TOLERANCE) continue;
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if(circle->rtti()==RS2::EntityCircle||circle->rtti()==RS2::EntityArc){
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double ds=vp.distanceTo(circle->getCenter());
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//condition for tangential to the given circle
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if( fabs(ds - (ds0 + circle->getRadius())) > RS_TOLERANCE && fabs(ds - fabs(ds0 - circle->getRadius())) > RS_TOLERANCE ) continue;
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}else{
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double ds=0.;
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circle->getNearestPointOnEntity(vp, false,&ds);
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//condition for tangential to the given straight line
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if( fabs(ds - ds0)>RS_TOLERANCE) continue;
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}
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//avoid counting the same center
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bool existing=false;
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for(auto const& vq: pPoints->centers){
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if(vq.squaredTo(vp) < RS_TOLERANCE15 ){
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existing=true;
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break;
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}
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}
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if(existing) continue;
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pPoints->centers.push_back(vp);
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}
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// DEBUG_HEADER
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// std::cout<<"points: "<<points[0]<<" , "<<points[1]<<std::endl;
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// std::cout<<"centers.size()="<<centers.size()<<std::endl;
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// std::cout<<"centers: "<<centers<<std::endl;
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pPoints->valid= (pPoints->centers.size()>0);
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return pPoints->valid;
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}
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bool RS_ActionDrawCircleTan1_2P::preparePreview(){
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if (!pPoints->centers.size()) getCenters();
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if (!pPoints->centers.size()) return false;
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pPoints->cData.center=pPoints->centers.getClosest(pPoints->coord);
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pPoints->cData.radius=pPoints->points[0].distanceTo(pPoints->cData.center);
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return true;
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}
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RS_Entity* RS_ActionDrawCircleTan1_2P::catchCircle(QMouseEvent* e) {
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RS_Entity* ret=nullptr;
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RS_Entity* en = catchEntity(e,enTypeList, RS2::ResolveAll);
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if (!en) return ret;
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if (!en->isVisible()) return ret;
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if (en->getParent()) {
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if ( en->getParent()->ignoredOnModification()){
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return nullptr;
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}
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}
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return en;
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}
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void RS_ActionDrawCircleTan1_2P::mouseReleaseEvent(QMouseEvent* e) {
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// Proceed to next status
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if (e->button()==Qt::LeftButton) {
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switch (getStatus()) {
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case SetCircle1:
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{
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RS_Entity* en = catchCircle(e);
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if (!en) return;
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circle = static_cast<RS_AtomicEntity*>(en);
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circle->setHighlighted(true);
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graphicView->redraw(RS2::RedrawDrawing);
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setStatus(getStatus()+1);
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}
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break;
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case SetPoint1:
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case SetPoint2:
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{
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RS_CoordinateEvent ce(snapPoint(e));
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coordinateEvent(&ce);
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}
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break;
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case SetCenter:
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pPoints->coord=graphicView->toGraph(e->x(),e->y());
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if(preparePreview()) trigger();
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break;
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default:
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break;
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}
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} else if (e->button()==Qt::RightButton) {
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// Return to last status:
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if(getStatus()>0){
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deletePreview();
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}
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init(getStatus()-1);
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}
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}
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void RS_ActionDrawCircleTan1_2P::coordinateEvent(RS_CoordinateEvent* e) {
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RS_Vector mouse = e->getCoordinate();
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pPoints->coord=mouse;
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switch(getStatus()){
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case SetPoint1:
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pPoints->points.clear();
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pPoints->points.push_back(mouse);
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setStatus(getStatus()+1);
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break;
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case SetPoint2:
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// pPoints->points.reserve(1);
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pPoints->points.push_back(mouse);
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if(getCenters()) {
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if(pPoints->centers.size()==1) trigger();
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else setStatus(getStatus()+1);
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}
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break;
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}
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}
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//fixme, support command line
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/*
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void RS_ActionDrawCircleTan1_2P::commandEvent(RS_CommandEvent* e) {
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QString c = e->getCommand().toLower();
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if (checkCommand("help", c)) {
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RS_DIALOGFACTORY->commandMessage(msgAvailableCommands()
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+ getAvailableCommands().join(", "));
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return;
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}
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switch (getStatus()) {
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case SetFocus1: {
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bool ok;
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double m = RS_Math::eval(c, &ok);
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if (ok) {
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ratio = m / major.magnitude();
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if (!isArc) {
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trigger();
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} else {
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setStatus(SetAngle1);
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}
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} else
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RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
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}
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break;
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case SetAngle1: {
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bool ok;
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double a = RS_Math::eval(c, &ok);
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if (ok) {
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angle1 = RS_Math::deg2rad(a);
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setStatus(SetAngle2);
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} else
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RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
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}
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break;
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case SetAngle2: {
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bool ok;
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double a = RS_Math::eval(c, &ok);
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if (ok) {
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angle2 = RS_Math::deg2rad(a);
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trigger();
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} else
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RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
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}
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break;
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default:
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break;
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}
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}
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*/
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//void RS_ActionDrawCircleTan1_2P::showOptions() {
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// RS_DEBUG->print("RS_ActionDrawCircleTan1_2P::showOptions");
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// RS_ActionInterface::showOptions();
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// RS_DIALOGFACTORY->requestOptions(this, true);
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// RS_DEBUG->print("RS_ActionDrawCircleTan1_2P::showOptions: OK");
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//}
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//void RS_ActionDrawCircleTan1_2P::hideOptions() {
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// RS_ActionInterface::hideOptions();
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// RS_DIALOGFACTORY->requestOptions(this, false);
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//}
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QStringList RS_ActionDrawCircleTan1_2P::getAvailableCommands() {
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QStringList cmd;
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return cmd;
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}
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void RS_ActionDrawCircleTan1_2P::updateMouseButtonHints() {
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switch (getStatus()) {
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case SetCircle1:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify a line/arc/circle"),
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tr("Cancel"));
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break;
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case SetPoint1:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the first point on the tangent circle"),
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tr("Back"));
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break;
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case SetPoint2:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the second point on the tangent circle"),
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tr("Back"));
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break;
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case SetCenter:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Select the center of the tangent circle"),
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tr("Back"));
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break;
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default:
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RS_DIALOGFACTORY->updateMouseWidget();
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break;
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}
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}
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void RS_ActionDrawCircleTan1_2P::updateMouseCursor()
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{
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switch (getStatus())
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{
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case SetCircle1:
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case SetCenter:
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graphicView->setMouseCursor(RS2::SelectCursor);
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break;
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case SetPoint1:
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case SetPoint2:
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graphicView->setMouseCursor(RS2::CadCursor);
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break;
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}
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}
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double RS_ActionDrawCircleTan1_2P::getRadius() const{
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return pPoints->cData.radius;
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}
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// EOF
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