mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-12-26 10:31:39 +08:00
03031e3762
- NEW: improved plotting speed for line-graphs by a compression algorithm (see JKQTPGraphLinesCompressionMixin) that removes overlaying lines (e.g. in JKQTPXYLineGraph)
- NEW: improved plotting speed for line-graphs by a clipping algorithm (applies to JKQTPXYLineGraph, JKQTPGraphErrorStyleMixin, JKQTPSpecialLineHorizontalGraph, JKQTPSpecialLineVerticalGraph and others)
- NEW: improved plotting speed for scatter-graphs by not calling draw functions for symbols outside the plot window (e.g. in JKQTPXYLineGraph)
121 lines
6.4 KiB
C++
121 lines
6.4 KiB
C++
/** \example geo_arrows.cpp
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* Shows how to plot arrows as geometric elements with JKQTPlotter
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*
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* \ref JKQTPlotterGeometricArrows
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*/
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#include <QApplication>
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#include "jkqtplotter/jkqtplotter.h"
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#include "jkqtplotter/graphs/jkqtpgeometric.h"
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#include "jkqtplotter/graphs/jkqtpgeoannotations.h"
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int main(int argc, char* argv[])
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{
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#if QT_VERSION >= QT_VERSION_CHECK(5,6,0) && QT_VERSION < QT_VERSION_CHECK(6,0,0)
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QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); // DPI support
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QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps); //HiDPI pixmaps
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#endif
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QApplication app(argc, argv);
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// 1. create a plotter window
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JKQTPlotter plot;
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// 2. format graph:
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// 2.1 set the graph scales manually
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plot.setXY(0,4.05,0,3.15);
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// 2.2 set the asxpect ratio to 1
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plot.getPlotter()->setMaintainAspectRatio(true);
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plot.getPlotter()->setAspectRatio(4.05/3.05);
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plot.getPlotter()->setMaintainAxisAspectRatio(true);
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plot.getPlotter()->setAxisAspectRatio(4.05/3.05);
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// 2.3 set the asxpect ratio to 1
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plot.getXAxis()->setDrawGrid(false);
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plot.getYAxis()->setDrawGrid(false);
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// 3.1 demonastrate all arrow heads
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JKQTPGeoArrow* a;
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double arr_y=0.1;
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double arr_deltay=2.9/static_cast<double>(JKQTPLineDecoratorCount);
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plot.addGraph(new JKQTPGeoText(&plot, 0.1, 3.0, "w_{line}=0.2", 12, QColor("darkred")));
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plot.addGraph(new JKQTPGeoText(&plot, 0.4, 3.0, "w_{line}=0.5", 12, QColor("darkred")));
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plot.addGraph(new JKQTPGeoText(&plot, 0.7, 3.0, "w_{line}=1", 12, QColor("darkred")));
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plot.addGraph(new JKQTPGeoText(&plot, 1.0, 3.0, "w_{line}=2", 12, QColor("darkred")));
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plot.addGraph(new JKQTPGeoText(&plot, 1.4, 3.0, "w_{line}=3", 12, QColor("darkred")));
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for (size_t i=0; i<static_cast<size_t>(JKQTPLineDecoratorCount); i++) {
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auto const decor=static_cast<JKQTPLineDecoratorStyle>(i);
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 0.1, arr_y, 0.3, arr_y+0.05, decor, JKQTPNoDecorator)); a->setStyle(QColor("red"), 0.2);
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 0.4, arr_y, 0.6, arr_y+0.05, decor, JKQTPNoDecorator)); a->setStyle(QColor("red"), 0.5);
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 0.7, arr_y, 0.9, arr_y+0.05, decor, JKQTPNoDecorator)); a->setStyle(QColor("red"), 1);
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 1.0, arr_y, 1.3, arr_y+0.05, decor, JKQTPNoDecorator)); a->setStyle(QColor("red"), 2);
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 1.4, arr_y, 1.7, arr_y+0.05, decor, JKQTPNoDecorator)); a->setStyle(QColor("red"), 3);
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plot.addGraph(new JKQTPGeoText(&plot, a->getX2()+0.05, a->getY2(), "\\verb!"+JKQTPLineDecoratorStyle2String(decor)+"!", 12, a->getLineColor()));
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arr_y+=arr_deltay;
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}
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// 3.2 note that all decorators are drawn in a way that lets them end at the intended end-point of the line, even circles!
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for (size_t i=0; i<6; i++) {
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 3+static_cast<double>(i)*0.15, 3, 3+static_cast<double>(i)*0.15, 2.75, static_cast<JKQTPLineDecoratorStyle>(i*4+1), static_cast<JKQTPLineDecoratorStyle>(i*4+2))); a->setStyle(QColor("blue"), static_cast<double>(i+1)*0.5);
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plot.addGraph(a=new JKQTPGeoArrow(&plot, 3+static_cast<double>(i)*0.15, 2.5, 3+static_cast<double>(i)*0.15, 2.75, static_cast<JKQTPLineDecoratorStyle>(i*4+3), static_cast<JKQTPLineDecoratorStyle>(i*4+4))); a->setStyle(QColor("red"), static_cast<double>(i+1)*0.5);
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}
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JKQTPGeoLine* l;
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plot.addGraph(l=new JKQTPGeoLine(&plot, 2.9, 2.5, 4.0, 2.5));
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l->setStyle(QColor("silver"), 0.25, Qt::DashLine);
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plot.addGraph(l=new JKQTPGeoLine(&plot, 2.9, 2.75, 4.0, 2.75));
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l->setStyle(QColor("silver"), 0.25, Qt::DashLine);
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plot.addGraph(l=new JKQTPGeoLine(&plot, 2.9, 3, 4.6, 3));
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l->setStyle(QColor("silver"), 0.25, Qt::DashLine);
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// 3.3 a JKQTPGeoLine with and without errow heads:
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JKQTPGeoLine* line=new JKQTPGeoLine(&plot, 2.9, 2.3, 3.6, 2.4);
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line->setStyle(QColor("red"), 2.0);
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JKQTPGeoLine* line_heads=new JKQTPGeoLine(&plot, 2.9, 2.1, 3.6, 2.2);
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line_heads->setStyle(QColor("red"), 2.0);
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line_heads->setHeadDecoratorStyle(JKQTPFilledDoubleArrow);
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line_heads->setTailDecoratorStyle(JKQTPCircleDecorator);
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plot.addGraph(line);
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plot.addGraph(line_heads);
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plot.addGraph(new JKQTPGeoSymbol(&plot, line->getX1(), line->getY1(), JKQTPCirclePlus, 8, QColor("silver")));
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plot.addGraph(new JKQTPGeoSymbol(&plot, line->getX2(), line->getY2(), JKQTPCirclePlus, 8, QColor("silver")));
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plot.addGraph(new JKQTPGeoSymbol(&plot, line_heads->getX1(), line_heads->getY1(), JKQTPCirclePlus, 8, QColor("silver")));
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plot.addGraph(new JKQTPGeoSymbol(&plot, line_heads->getX2(), line_heads->getY2(), JKQTPCirclePlus, 8, QColor("silver")));
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// 3.4 also the class JKQTPGeoPolyLines can decorate its start/end with arrows
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QVector<QPointF> points; points<<QPointF(3, 0.8)<<QPointF(4, 0.7)<<QPointF(3, 1.2)<<QPointF(4, 1.0);
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JKQTPGeoPolyLines* polyLine=new JKQTPGeoPolyLines(&plot, points);
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polyLine->setColor(QColor("blue"));
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polyLine->setHeadDecoratorStyle(JKQTPFilledDoubleArrow);
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polyLine->setTailDecoratorStyle(JKQTPCircleDecorator);
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plot.addGraph(polyLine);
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// 3.5 also the class JKQTPGeoInfiniteLine can decorate its start with arrows (only if two_sided==false!)
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JKQTPGeoInfiniteLine* infLine=new JKQTPGeoInfiniteLine(&plot, 3.5, 0.2, 1, 0.25);
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infLine->setStyle(QColor("blue"), 2);
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infLine->setHeadDecoratorStyle(JKQTPFilledDoubleArrow);
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plot.addGraph(infLine);
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plot.addGraph(new JKQTPGeoSymbol(&plot, infLine->getX(), infLine->getY(), JKQTPCirclePlus, 8, QColor("silver")));
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plot.addGraph(a=new JKQTPGeoArrow(&plot, infLine->getX(), infLine->getY(), infLine->getX()+infLine->getDx(), infLine->getY()+infLine->getDy(), JKQTPArrow, JKQTPNoDecorator));
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infLine->setStyle(QColor("silver"), 1);
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/*
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infLine=new JKQTPGeoInfiniteLine(&plot, 3.5, 0.1, -1, 0.25, QColor("darkblue"), 2);
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infLine->setHeadDecoratorStyle(JKQTPFilledDoubleArrow);
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infLine->setTwoSided(true);
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plot.addGraph(infLine);
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plot.addGraph(new JKQTPGeoSymbol(&plot, infLine->getX(), infLine->getY(), JKQTPCirclePlus, 8, QColor("silver")));
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plot.addGraph(new JKQTPGeoArrow(&plot, infLine->getX(), infLine->getY(), infLine->getX()+infLine->getDx(), infLine->getY()+infLine->getDy(), QColor("silver"), JKQTPArrow, JKQTPNoDecorator, 1));
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*/
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// 4. show plotter and make it a decent size
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plot.show();
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plot.resize(1200,800);
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return app.exec();
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}
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