基于qwtplot3d的QT 3d 波形显示

qwtplot3d下载地址：

https://github.com/sintegrial/qwtplot3d

示例运行效果

部分代码：

QtWidgets3DTest::QtWidgets3DTest(QWidget *parent)
    : QMainWindow(parent)
{
    ui.setupUi(this);  

    QGridLayout *grid = new QGridLayout(ui.frame); 
    dataWidget = new GridPlot(ui.frame);
    grid->addWidget(dataWidget, 0, 0);

    //ui.btnColor->setVisible(false);
    ui.cbxDataType->addItem("Default");
    ui.cbxDataType->addItem("Sine");
    ui.cbxDataType->addItem("White Noise");

    ui.cbxAxisStyle->addItem("Box"); 
    ui.cbxAxisStyle->addItem("XYZ");
    ui.cbxAxisStyle->addItem("None"); 

    ui.cbxStyle->addItem("point");
    ui.cbxStyle->addItem("wireframe");
    ui.cbxStyle->addItem("hiddenline");
    ui.cbxStyle->addItem("polygon");
    ui.cbxStyle->addItem("filledmesh"); 
    ui.cbxStyle->addItem("NoData");
     
    connect(ui.btnReset, SIGNAL(clicked()), this, SLOT(setStandardView()));
    connect(ui.btnRotate, SIGNAL(clicked()), this, SLOT(pickAnimation()));
    
    connect(ui.cbxDataType, SIGNAL(currentIndexChanged(int)), this, SLOT(pickDataStyle(int)));
    connect(ui.cbxAxisStyle, SIGNAL(currentIndexChanged(int)), this, SLOT(pickCoordSystem(int)));
    connect(ui.cbxStyle, SIGNAL(currentIndexChanged(int)), this, SLOT(pickPlotStyle(int)));

    connect(ui.chxMouse, SIGNAL(toggled(bool)), dataWidget, SLOT(enableMouse(bool)));
    connect(ui.chxProjection, SIGNAL(toggled(bool)), this, SLOT(toggleProjectionMode(bool)));
    connect(ui.chxColorlegend, SIGNAL(toggled(bool)), this, SLOT(toggleColorLegend(bool)));
    connect(ui.chxAutoscale, SIGNAL(toggled(bool)), this, SLOT(toggleAutoScale(bool)));
    connect(ui.chxShader, SIGNAL(toggled(bool)), this, SLOT(toggleShader(bool)));

    connect(&timerWaterfall, SIGNAL(timeout()), this, SLOT(UpdateData()));
    rotateTimer = new QTimer(this);
    connect(rotateTimer, SIGNAL(timeout()), this, SLOT(rotate()));

    dataWidget->coordinates()->setLineSmooth(true);
    dataWidget->setRenderThreadsCount(8);
    setStandardView();
    resetColors();
    resetFonts();
    dataWidget->enableMouse(true);
    dataWidget->setKeySpeed(15, 20, 20);
     
    dataWidget->setPlotStyle(FILLED);//polygon
    ui.cbxStyle->setCurrentIndex(3);
    toggleAutoScale(false);
    toggleShader(false);
    //timerWaterfall.stop();
    ui.cbxDataType->setCurrentIndex(1);//Sine
    ui.cbxAxisStyle->setCurrentIndex(1);//XYZ
    pickDataStyle(1);
}

void QtWidgets3DTest::pickDataStyle(int idx)
{
    if (idx == 1)
    {
        InitSineWaterfallData();
    } 
    else if (idx == 2)
    {
         
    } 
    else
    {  
        InitWaterfallData();
    } 
    dataWidget->update();
}

void  QtWidgets3DTest::InitWaterfallData()
{
    // fill initial data
    for (int i = 0; i < colmums; i++)
    {
        dataWaterfall[i] = new double[rows];
        double zval = 50;
        for (int j = 0; j < rows; j++)
        {
            dataWaterfall[i][j] = zval;
            zval = zval+ rand() % 3 - 1;
        }
    } 
    timerWaterfall.setInterval(50);
    timerWaterfall.start();
}

void QtWidgets3DTest::UpdateData()
{
    if (ui.cbxDataType->currentIndex() == 1)
    {   
        double armp = qrand() % (5, 100);
        for (int i = 0; i < colmums; i++)
        {
            for (int j = 1; j < rows; j++)
            {
                /*if ( j % 5 == 0)
                    dataWaterfall[i][j - 1] = std::numeric_limits<double>::quiet_NaN();
                else*/
                    dataWaterfall[i][j - 1] = dataWaterfall[i][j];
            }
        } 
        for (int i = 0; i < colmums; i++)
        {
            double t = (float)i / rows;
            double zval = 0;
            //if (i % 3 == 0|| i % 5 == 0)
            //    zval = std::numeric_limits<double>::quiet_NaN();//减少数据密度，增加运行速度 by yanglk 15923358280
            //else
                zval = armp * sin(2 * PI * frequencySine * t);

            dataWaterfall[i][rows - 1] = zval;
        }
    }
    else
    { 
        for (int i = 0; i < colmums; i++)
        {
            for (int j = 1; j < rows; j++)
            {
                dataWaterfall[i][j - 1] = dataWaterfall[i][j];
            }
        }
        double zval = 50;
        for (int i = 0; i < colmums; i++)
        {
            dataWaterfall[i][rows - 1] = zval;
            zval += rand() % 3 - 1;
            if (rand() % 5 == 1)
                dataWaterfall[i][rows - 1] = std::numeric_limits<double>::quiet_NaN();
        }
    }
    
    QElapsedTimer tim;
    tim.start();
    int ylen = rows * 6;
    // update dataset
    dataWidget->createDataset(dataWaterfall, colmums, rows, 0, colmums, 0, ylen);

    qint64 rate = tim.elapsed();
    dataWidget->setTitle(QString("Dynamic Plotter Demon - Frame Time %1 ms").arg(rate));
    dataWidget->coordinates()->axes[X1].setLabelString("Size");
    dataWidget->coordinates()->axes[Y1].setLabelString("Times");
    dataWidget->coordinates()->axes[Z1].setLabelString("Amplitude");
    //dataWidget->setResolution(0); 
    dataWidget->update();
}

void  QtWidgets3DTest::InitSineWaterfallData()
{
    // fill initial data  
    for (int i = 0; i < colmums; i++)
    {
        dataWaterfall[i] = new double[rows];
        for (int j = 0; j < rows; j++)
        { 
            dataWaterfall[i][j] = std::numeric_limits<double>::quiet_NaN();
        }
    }
    for (int i = 0; i < colmums; i++)
    {
        double t = (float)i / colmums;
        double zval = amplitudeSine * sin(2 * PI * frequencySine * t);
        dataWaterfall[i][0] = zval;
    }
    timerWaterfall.setInterval(50);
    timerWaterfall.start();
}

说明

1，dataWidget->createDataset(dataWaterfall, colmums, rows, 0, colmums, 0, ylen);“colmums, rows”可设置X轴Y轴的间隔和刻度

2，\src\qwt3d_gridplot.cpp，GridPlot::CVertexProcessor::run()方法是画格子线的，如果只想画一个方向的线条，可以注释点另一个方向的画线逻辑

3，如果不需要法线，可以注释掉带“Normals”的相关方法。

待实现：

1，鼠标获取当前XYZ值，以及当前XYZ轴的上所有点的颜色

2，增加X轴Y轴光标。

 如需要原码可联系