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This commit is contained in:
feiyangqingyun
2022-05-18 17:39:04 +08:00
parent 96938b94f9
commit a155ad45d3
32 changed files with 145 additions and 322 deletions
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5
third/qcustomplotdemo/frmexample/frmparametriccurve.cpp
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@@ -19,6 +19,7 @@ void frmParametricCurve::initForm()
QCPCurve *fermatSpiral1 = new QCPCurve(ui->customPlot->xAxis, ui->customPlot->yAxis);
QCPCurve *fermatSpiral2 = new QCPCurve(ui->customPlot->xAxis, ui->customPlot->yAxis);
QCPCurve *deltoidRadial = new QCPCurve(ui->customPlot->xAxis, ui->customPlot->yAxis);
// generate the curve data points:
const int pointCount = 500;
QVector<QCPCurveData> dataSpiral1(pointCount), dataSpiral2(pointCount), dataDeltoid(pointCount);
@@ -29,21 +30,25 @@ void frmParametricCurve::initForm()
dataSpiral2[i] = QCPCurveData(i, -dataSpiral1[i].key, -dataSpiral1[i].value);
dataDeltoid[i] = QCPCurveData(i, 2 * qCos(2 * theta) + qCos(1 * theta) + 2 * qSin(theta), 2 * qSin(2 * theta) - qSin(1 * theta));
}
// pass the data to the curves; we know t (i in loop above) is ascending, so set alreadySorted=true (saves an extra internal sort):
fermatSpiral1->data()->set(dataSpiral1, true);
fermatSpiral2->data()->set(dataSpiral2, true);
deltoidRadial->data()->set(dataDeltoid, true);
// color the curves:
fermatSpiral1->setPen(QPen(Qt::blue));
fermatSpiral1->setBrush(QBrush(QColor(0, 0, 255, 20)));
fermatSpiral2->setPen(QPen(QColor(255, 120, 0)));
fermatSpiral2->setBrush(QBrush(QColor(255, 120, 0, 30)));
QRadialGradient radialGrad(QPointF(310, 180), 200);
radialGrad.setColorAt(0, QColor(170, 20, 240, 100));
radialGrad.setColorAt(0.5, QColor(20, 10, 255, 40));
radialGrad.setColorAt(1, QColor(120, 20, 240, 10));
deltoidRadial->setPen(QPen(QColor(170, 20, 240)));
deltoidRadial->setBrush(QBrush(radialGrad));
// set some basic ui->customPlot config:
ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
ui->customPlot->axisRect()->setupFullAxesBox();