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Chenwenxuan
286
actions/rs_actiondrawarctangential.cpp
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286
actions/rs_actiondrawarctangential.cpp
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/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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**
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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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**
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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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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#include<cmath>
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#include <QAction>
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#include <QMouseEvent>
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#include "rs_actiondrawarctangential.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 "ui_qg_arctangentialoptions.h"
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#include "rs_coordinateevent.h"
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#include "rs_math.h"
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#include "rs_preview.h"
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#include "rs_debug.h"
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RS_ActionDrawArcTangential::RS_ActionDrawArcTangential(RS_EntityContainer& container,
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RS_GraphicView& graphicView)
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:RS_PreviewActionInterface("Draw arcs tangential",
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container, graphicView)
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, point(new RS_Vector{})
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, data(new RS_ArcData{})
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{
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actionType=RS2::ActionDrawArcTangential;
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reset();
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}
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RS_ActionDrawArcTangential::~RS_ActionDrawArcTangential() = default;
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void RS_ActionDrawArcTangential::reset() {
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baseEntity = nullptr;
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isStartPoint = false;
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*point = {};
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}
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void RS_ActionDrawArcTangential::setByRadius(bool status) {
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byRadius=status;
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}
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void RS_ActionDrawArcTangential::init(int status) {
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RS_PreviewActionInterface::init(status);
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//reset();
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}
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void RS_ActionDrawArcTangential::trigger() {
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RS_PreviewActionInterface::trigger();
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if (!(point->valid && baseEntity)) {
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RS_DEBUG->print("RS_ActionDrawArcTangential::trigger: "
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"conditions not met");
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return;
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}
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preparePreview();
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RS_Arc* arc = new RS_Arc(container, *data);
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arc->setLayerToActive();
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arc->setPenToActive();
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container->addEntity(arc);
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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(arc);
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document->endUndoCycle();
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}
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graphicView->redraw(RS2::RedrawDrawing);
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graphicView->moveRelativeZero(arc->getCenter());
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setStatus(SetBaseEntity);
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reset();
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}
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void RS_ActionDrawArcTangential::preparePreview() {
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if (baseEntity && point->valid) {
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RS_Vector startPoint;
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double direction;
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if (isStartPoint) {
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startPoint = baseEntity->getStartpoint();
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direction = RS_Math::correctAngle(baseEntity->getDirection1()+M_PI);
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} else {
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startPoint = baseEntity->getEndpoint();
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direction = RS_Math::correctAngle(baseEntity->getDirection2()+M_PI);
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}
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RS_Arc arc(nullptr, RS_ArcData());
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bool suc;
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if (byRadius) {
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suc = arc.createFrom2PDirectionRadius(startPoint, *point, direction, data->radius);
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} else {
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suc = arc.createFrom2PDirectionAngle(startPoint, *point, direction, angleLength);
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}
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if (suc) {
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data.reset(new RS_ArcData(arc.getData()));
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if (byRadius)
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RS_DIALOGFACTORY->updateArcTangentialOptions(arc.getAngleLength()*180./M_PI,true);
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else
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RS_DIALOGFACTORY->updateArcTangentialOptions(arc.getRadius(),false);
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}
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}
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}
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void RS_ActionDrawArcTangential::mouseMoveEvent(QMouseEvent* e) {
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if(getStatus() == SetEndAngle) {
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*point = snapPoint(e);
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preparePreview();
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if (data->isValid()) {
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RS_Arc* arc = new RS_Arc(preview.get(), *data);
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deletePreview();
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preview->addEntity(arc);
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drawPreview();
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}
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}
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}
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void RS_ActionDrawArcTangential::mouseReleaseEvent(QMouseEvent* e) {
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if (e->button()==Qt::LeftButton) {
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switch (getStatus()) {
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// set base entity:
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case SetBaseEntity: {
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RS_Vector coord = graphicView->toGraph(e->x(), e->y());
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RS_Entity* entity = catchEntity(coord, RS2::ResolveAll);
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if (entity) {
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if (entity->isAtomic()) {
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baseEntity = static_cast<RS_AtomicEntity*>(entity);
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if (baseEntity->getStartpoint().distanceTo(coord) <
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baseEntity->getEndpoint().distanceTo(coord)) {
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isStartPoint = true;
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} else {
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isStartPoint = false;
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}
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setStatus(SetEndAngle);
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updateMouseButtonHints();
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}
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}
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}
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break;
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// set angle (point that defines the angle)
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case SetEndAngle: {
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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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}
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} else if (e->button()==Qt::RightButton) {
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deletePreview();
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init(getStatus()-1);
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}
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}
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void RS_ActionDrawArcTangential::coordinateEvent(RS_CoordinateEvent* e) {
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if (e==nullptr) {
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return;
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}
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RS_Vector mouse = e->getCoordinate();
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switch (getStatus()) {
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case SetBaseEntity:
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break;
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case SetEndAngle:
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*point = mouse;
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trigger();
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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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void RS_ActionDrawArcTangential::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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}
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QStringList RS_ActionDrawArcTangential::getAvailableCommands() {
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QStringList cmd;
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return cmd;
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}
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void RS_ActionDrawArcTangential::showOptions() {
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RS_ActionInterface::showOptions();
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RS_DIALOGFACTORY->requestOptions(this, true);
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updateMouseButtonHints();
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}
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void RS_ActionDrawArcTangential::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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void RS_ActionDrawArcTangential::updateMouseButtonHints() {
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switch (getStatus()) {
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case SetBaseEntity:
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify base entity"),
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tr("Cancel"));
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break;
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case SetEndAngle:
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if(byRadius) {
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify end angle"), tr("Back"));
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} else {
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify end point"), tr("Back"));
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}
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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_ActionDrawArcTangential::updateMouseCursor() {
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graphicView->setMouseCursor(RS2::SelectCursor);
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}
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void RS_ActionDrawArcTangential::setRadius(double r){
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data->radius = r;
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}
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double RS_ActionDrawArcTangential::getRadius() const {
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return data->radius;
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}
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// EOF
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