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Chenwenxuan
361
actions/rs_actiondrawcircletan2_1p.cpp
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361
actions/rs_actiondrawcircletan2_1p.cpp
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/****************************************************************************
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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<vector>
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#include <QAction>
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#include <QMouseEvent>
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#include "rs_actiondrawcircletan2_1p.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 "lc_quadratic.h"
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#include "rs_coordinateevent.h"
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#include "rs_point.h"
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#include "rs_preview.h"
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#include "rs_debug.h"
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struct RS_ActionDrawCircleTan2_1P::Points {
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RS_Vector point;
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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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std::vector<RS_AtomicEntity*> circles;
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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_ActionDrawCircleTan2_1P::RS_ActionDrawCircleTan2_1P(
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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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, pPoints(new Points{})
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{
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actionType=RS2::ActionDrawCircleTan2_1P;
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}
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RS_ActionDrawCircleTan2_1P::~RS_ActionDrawCircleTan2_1P() = default;
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void RS_ActionDrawCircleTan2_1P::init(int 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>(int) pPoints->circles.size()) status=(int) pPoints->circles.size();
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RS_PreviewActionInterface::init(status);
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for(int i=0; i<status; ++i){
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if(!pPoints->circles[i]) {
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status=i;
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break;
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}
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}
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bool updateNeeded(false);
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for(size_t i=status>=0?status:0; i<pPoints->circles.size(); ++i){
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if(pPoints->circles[i])
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if(pPoints->circles[i]->isHighlighted()){
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pPoints->circles[i]->setHighlighted(false);
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updateNeeded=true;
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}
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}
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if(updateNeeded) graphicView->redraw(RS2::RedrawDrawing);
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pPoints->circles.resize(status>=0?status:0);
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}
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void RS_ActionDrawCircleTan2_1P::finish(bool updateTB){
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if( pPoints->circles.size() >0) {
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for(RS_AtomicEntity*const circle: pPoints->circles)
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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_ActionDrawCircleTan2_1P::trigger() {
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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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for(RS_AtomicEntity*const circle: pPoints->circles)
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circle->setHighlighted(false);
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graphicView->redraw(RS2::RedrawDrawing);
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pPoints->circles.clear();
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RS_DEBUG->print("RS_ActionDrawCircleTan2_1P::trigger():"
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" entity added: %d", c->getId());
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init(SetCircle1);
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}
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bool RS_ActionDrawCircleTan2_1P::getCenters()
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{
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if(pPoints->circles.size()<2) return false;
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LC_Quadratic lc0(pPoints->circles[0], pPoints->point);
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LC_Quadratic lc1(pPoints->circles[1], pPoints->point);
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auto const& list=LC_Quadratic::getIntersection(lc0,lc1);
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pPoints->centers.clear();
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for(const RS_Vector& vp: list){
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auto ds=vp.distanceTo(pPoints->point)-RS_TOLERANCE;
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bool validBranch(true);
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for(int j=0;j<2;j++){
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if(pPoints->circles[j]->rtti()==RS2::EntityCircle||pPoints->circles[j]->rtti()==RS2::EntityArc){
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if( vp.distanceTo(pPoints->circles[j]->getCenter()) <= ds) {
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validBranch=false;
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break;
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}
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}
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}
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if(validBranch) pPoints->centers.push_back(vp);
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}
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return pPoints->centers.size()>0;
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}
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void RS_ActionDrawCircleTan2_1P::mouseMoveEvent(QMouseEvent* e) {
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RS_DEBUG->print("RS_ActionDrawCircleTan2_1P::mouseMoveEvent begin");
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switch( getStatus()){
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case SetPoint:
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pPoints->coord=snapPoint(e);
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pPoints->point=pPoints->coord;
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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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break;
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default:
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return;
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}
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deletePreview();
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if(preparePreview()){
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RS_Circle* e=new RS_Circle(preview.get(), pPoints->cData);
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for (auto const& vp: pPoints->centers)
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preview->addEntity(new RS_Point(preview.get(), vp));
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preview->addEntity(e);
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drawPreview();
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}
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RS_DEBUG->print("RS_ActionDrawCircleTan2_1P::mouseMoveEvent end");
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}
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bool RS_ActionDrawCircleTan2_1P::preparePreview(){
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if (!getCenters()) return false;
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pPoints->cData.center=pPoints->centers.getClosest(pPoints->coord);
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pPoints->cData.radius=pPoints->point.distanceTo(pPoints->cData.center);
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return true;
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}
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RS_Entity* RS_ActionDrawCircleTan2_1P::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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for(auto p: pPoints->circles){
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if(p && en->getId() == p->getId()) return ret; //do not pull in the same line again
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}
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if(en->getParent() && en->getParent()->ignoredOnModification()){
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return nullptr;
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}
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return en;
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}
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void RS_ActionDrawCircleTan2_1P::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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case SetCircle2:
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{
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pPoints->circles.resize(getStatus());
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RS_AtomicEntity* en = static_cast<RS_AtomicEntity*>(catchCircle(e));
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if (!en) return;
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// circle = static_cast<RS_AtomicEntity*>(en);
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en->setHighlighted(true);
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pPoints->circles.push_back(en);
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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 SetPoint:
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{
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RS_Vector snapped = snapPoint(e);
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RS_CoordinateEvent ce(snapped);
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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_ActionDrawCircleTan2_1P::coordinateEvent(RS_CoordinateEvent* e) {
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RS_Vector mouse = e->getCoordinate();
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switch(getStatus()){
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case SetPoint:
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pPoints->point=mouse;
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pPoints->coord=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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default:
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break;
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// case SetCenter:
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// coord=mouse;
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// trigger();
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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_ActionDrawCircleTan2_1P::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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QStringList RS_ActionDrawCircleTan2_1P::getAvailableCommands() {
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return {};
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}
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void RS_ActionDrawCircleTan2_1P::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 SetCircle2:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the another arc/circle"),
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tr("Back"));
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break;
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case SetPoint:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify a 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_ActionDrawCircleTan2_1P::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 SetCircle2:
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case SetCenter:
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graphicView->setMouseCursor(RS2::SelectCursor);
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break;
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case SetPoint:
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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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// EOF
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