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Chenwenxuan
393
actions/rs_actiondrawellipseaxis.cpp
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393
actions/rs_actiondrawellipseaxis.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_actiondrawellipseaxis.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_ellipse.h"
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#include "rs_line.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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struct RS_ActionDrawEllipseAxis::Points {
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/** Center of ellipse */
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RS_Vector center;
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/** Endpoint of major axis */
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RS_Vector m_vMajorP;
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/** Ratio major / minor */
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double ratio;
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/** Start angle */
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double angle1;
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/** End angle */
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double angle2;
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/** Do we produce an arc (true) or full ellipse (false) */
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bool isArc;
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};
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/**
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* Constructor.
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*
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* @param isArc true if this action will produce an ellipse arc.
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* false if it will produce a full ellipse.
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*/
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RS_ActionDrawEllipseAxis::RS_ActionDrawEllipseAxis(
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RS_EntityContainer& container,
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RS_GraphicView& graphicView,
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bool isArc)
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:RS_PreviewActionInterface("Draw ellipse with axis",
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container, graphicView)
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,pPoints(new Points{{}, {}, 0.5, 0., isArc?2.*M_PI:0., isArc})
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{
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actionType=isArc?RS2::ActionDrawEllipseArcAxis:RS2::ActionDrawEllipseAxis;
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}
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RS_ActionDrawEllipseAxis::~RS_ActionDrawEllipseAxis() = default;
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void RS_ActionDrawEllipseAxis::init(int status) {
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RS_PreviewActionInterface::init(status);
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if (status==SetCenter) {
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pPoints->center = {};
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}
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if (status<=SetMajor) {
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pPoints->m_vMajorP = {};
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}
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if (status<=SetMinor) {
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pPoints->ratio = 0.5;
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}
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if (status<=SetAngle1) {
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pPoints->angle1 = 0.0;
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}
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if (status<=SetAngle2) {
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pPoints->angle2 = 0.0;
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}
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}
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void RS_ActionDrawEllipseAxis::trigger() {
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RS_PreviewActionInterface::trigger();
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RS_Ellipse* ellipse = new RS_Ellipse{container,
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{pPoints->center, pPoints->m_vMajorP, pPoints->ratio,
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pPoints->angle1, pPoints->angle2, false}
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};
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if (pPoints->ratio > 1.){
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ellipse->switchMajorMinor();
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}
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ellipse->setLayerToActive();
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ellipse->setPenToActive();
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container->addEntity(ellipse);
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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(ellipse);
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document->endUndoCycle();
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}
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RS_Vector rz = graphicView->getRelativeZero();
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graphicView->redraw(RS2::RedrawDrawing);
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graphicView->moveRelativeZero(rz);
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drawSnapper();
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setStatus(SetCenter);
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RS_DEBUG->print("RS_ActionDrawEllipseAxis::trigger():"
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" entity added: %d", ellipse->getId());
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}
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void RS_ActionDrawEllipseAxis::mouseMoveEvent(QMouseEvent* e) {
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RS_DEBUG->print("RS_ActionDrawEllipseAxis::mouseMoveEvent begin");
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RS_Vector mouse = snapPoint(e);
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switch (getStatus()) {
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// case SetCenter:
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// break;
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case SetMajor:
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if (pPoints->center.valid) {
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deletePreview();
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preview->addEntity(new RS_Ellipse{preview.get(),
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{pPoints->center, mouse-pPoints->center, 0.5, 0.0,
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pPoints->isArc?2.*M_PI:0.
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, false}});
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drawPreview();
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}
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break;
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case SetMinor:
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if (pPoints->center.valid && pPoints->m_vMajorP.valid) {
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deletePreview();
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RS_Line line{pPoints->center-pPoints->m_vMajorP, pPoints->center+pPoints->m_vMajorP};
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double d = line.getDistanceToPoint(mouse);
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pPoints->ratio = d/(line.getLength()/2);
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preview->addEntity(new RS_Ellipse{preview.get(),
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{pPoints->center, pPoints->m_vMajorP, pPoints->ratio, 0., pPoints->isArc?2.*M_PI:0.
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, false}});
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drawPreview();
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}
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break;
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case SetAngle1:
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if (pPoints->center.valid && pPoints->m_vMajorP.valid) {
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deletePreview();
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//angle1 = center.angleTo(mouse);
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RS_Vector m = mouse;
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m.rotate(pPoints->center, -pPoints->m_vMajorP.angle());
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RS_Vector v = m-pPoints->center;
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v.y /= pPoints->ratio;
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pPoints->angle1 = v.angle(); // + m_vMajorP.angle();
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preview->addEntity(new RS_Line{preview.get(), pPoints->center, mouse});
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preview->addEntity(new RS_Ellipse{preview.get(),
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{pPoints->center, pPoints->m_vMajorP, pPoints->ratio, pPoints->angle1, pPoints->angle1+1.0
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, false}});
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drawPreview();
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}
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break;
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case SetAngle2:
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if (pPoints->center.valid && pPoints->m_vMajorP.valid) {
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deletePreview();
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//angle2 = center.angleTo(mouse);
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RS_Vector m = mouse;
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m.rotate(pPoints->center, -pPoints->m_vMajorP.angle());
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RS_Vector v = m-pPoints->center;
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v.y /= pPoints->ratio;
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pPoints->angle2 = v.angle(); // + m_vMajorP.angle();
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preview->addEntity(new RS_Line{preview.get(), pPoints->center, mouse});
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preview->addEntity(new RS_Ellipse{preview.get(),
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{pPoints->center, pPoints->m_vMajorP,
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pPoints->ratio,
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pPoints->angle1, pPoints->angle2
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, false}});
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drawPreview();
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}
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default:
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break;
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}
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RS_DEBUG->print("RS_ActionDrawEllipseAxis::mouseMoveEvent end");
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}
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void RS_ActionDrawEllipseAxis::mouseReleaseEvent(QMouseEvent* e) {
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// Proceed to next status
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if (e->button()==Qt::LeftButton) {
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RS_CoordinateEvent ce(snapPoint(e));
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coordinateEvent(&ce);
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}
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// Return to last status:
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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_ActionDrawEllipseAxis::coordinateEvent(RS_CoordinateEvent* e) {
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if (!e) return;
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RS_Vector const& mouse = e->getCoordinate();
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switch (getStatus()) {
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case SetCenter:
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pPoints->center = mouse;
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graphicView->moveRelativeZero(mouse);
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setStatus(SetMajor);
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break;
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case SetMajor:
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pPoints->m_vMajorP = mouse- pPoints->center;
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setStatus(SetMinor);
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break;
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case SetMinor: {
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RS_Line line{pPoints->center-pPoints->m_vMajorP, pPoints->center+pPoints->m_vMajorP};
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double d = line.getDistanceToPoint(mouse);
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pPoints->ratio = d/(line.getLength()/2);
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if (!pPoints->isArc) {
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trigger();
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setStatus(SetCenter);
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} else {
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setStatus(SetAngle1);
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}
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}
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break;
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case SetAngle1: {
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//angle1 = center.angleTo(mouse);
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RS_Vector m = mouse;
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m.rotate(pPoints->center, -pPoints->m_vMajorP.angle());
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RS_Vector v = m-pPoints->center;
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v.y /= pPoints->ratio;
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pPoints->angle1 = v.angle();
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setStatus(SetAngle2);
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} break;
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case SetAngle2: {
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//angle2 = center.angleTo(mouse);
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RS_Vector m = mouse;
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m.rotate(pPoints->center, -pPoints->m_vMajorP.angle());
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RS_Vector v = m-pPoints->center;
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v.y /= pPoints->ratio;
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pPoints->angle2 = v.angle();
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trigger();
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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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void RS_ActionDrawEllipseAxis::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 SetMinor: {
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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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e->accept();
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pPoints->ratio = m / pPoints->m_vMajorP.magnitude();
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if (!pPoints->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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e->accept();
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pPoints->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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e->accept();
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pPoints->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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QStringList RS_ActionDrawEllipseAxis::getAvailableCommands() {
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QStringList cmd;
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return cmd;
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}
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void RS_ActionDrawEllipseAxis::updateMouseButtonHints() {
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switch (getStatus()) {
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case SetCenter:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify ellipse center"),
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tr("Cancel"));
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break;
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case SetMajor:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify endpoint of major axis"),
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tr("Back"));
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break;
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case SetMinor:
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify endpoint or length of minor axis:"),
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tr("Back"));
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break;
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case SetAngle1:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify start angle"),
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tr("Back"));
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break;
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case SetAngle2:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify end angle"),
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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_ActionDrawEllipseAxis::updateMouseCursor() {
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graphicView->setMouseCursor(RS2::CadCursor);
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}
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// EOF
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