新增超级曲线图表

2021-12-10 20:34:18 +08:00
parent 1a2302c05d
commit e215d3989b
143 changed files with 120241 additions and 5 deletions
--- a/third/qcustomplotdemo/frmexample/frmtexturebrush.cpp
+++ b/third/qcustomplotdemo/frmexample/frmtexturebrush.cpp
@@ -0,0 +1,58 @@
+#include "frmtexturebrush.h"
+#include "ui_frmtexturebrush.h"
+#include "qdebug.h"
+
+frmTextureBrush::frmTextureBrush(QWidget *parent) : QWidget(parent), ui(new Ui::frmTextureBrush)
+{
+    ui->setupUi(this);
+    this->initForm();
+}
+
+frmTextureBrush::~frmTextureBrush()
+{
+    delete ui;
+}
+
+void frmTextureBrush::initForm()
+{
+    // add two graphs with a textured fill:
+    ui->customPlot->addGraph();
+    QPen redDotPen;
+    redDotPen.setStyle(Qt::DotLine);
+    redDotPen.setColor(QColor(170, 100, 100, 180));
+    redDotPen.setWidthF(2);
+    ui->customPlot->graph(0)->setPen(redDotPen);
+    ui->customPlot->graph(0)->setBrush(QBrush(QPixmap(":/image/bg2.jpg"))); // fill with texture of specified image
+
+    ui->customPlot->addGraph();
+    ui->customPlot->graph(1)->setPen(QPen(Qt::red));
+
+    // activate channel fill for graph 0 towards graph 1:
+    ui->customPlot->graph(0)->setChannelFillGraph(ui->customPlot->graph(1));
+
+    // generate data:
+    QVector<double> x(250);
+    QVector<double> y0(250), y1(250);
+    for (int i = 0; i < 250; ++i) {
+        // just playing with numbers, not much to learn here
+        x[i] = 3 * i / 250.0;
+        y0[i] = 1 + qExp(-x[i] * x[i] * 0.8) * (x[i] * x[i] + x[i]);
+        y1[i] = 1 - qExp(-x[i] * x[i] * 0.4) * (x[i] * x[i]) * 0.1;
+    }
+
+    // pass data points to graphs:
+    ui->customPlot->graph(0)->setData(x, y0);
+    ui->customPlot->graph(1)->setData(x, y1);
+    // activate top and right axes, which are invisible by default:
+    ui->customPlot->xAxis2->setVisible(true);
+    ui->customPlot->yAxis2->setVisible(true);
+    // make tick labels invisible on top and right axis:
+    ui->customPlot->xAxis2->setTickLabels(false);
+    ui->customPlot->yAxis2->setTickLabels(false);
+    // set ranges:
+    ui->customPlot->xAxis->setRange(0, 2.5);
+    ui->customPlot->yAxis->setRange(0.9, 1.6);
+    // assign top/right axes same properties as bottom/left:
+    ui->customPlot->axisRect()->setupFullAxesBox();
+    ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
+}