ChartDirector 6.0 (C++ Edition)

3D Bubble Chart (2)




This examples demonstrates a bubble chart using brighter glass spheres as bubbles.

Source Code Listing

[The following code is available in "cppdemo/threedbubble2". A MFC version of the code is available in "mfcdemo/mfcdemo" (Windows edition only). A QT version of the code is available in "qtdemo/qtdemo".]
#include "chartdir.h"

int main(int argc, char *argv[])
{
    // The XYZ points for the bubble chart
    double dataX0[] = {170, 300, 1000, 1700};
    double dataY0[] = {16, 69, 16, 75};
    double dataZ0[] = {52, 105, 88, 140};

    double dataX1[] = {500, 1000, 1300};
    double dataY1[] = {40, 58, 85};
    double dataZ1[] = {140, 202, 84};

    // Create a XYChart object of size 540 x 480 pixels
    XYChart *c = new XYChart(540, 480);

    // Set the plotarea at (70, 65) and of size 400 x 350 pixels. Turn on both horizontal and
    // vertical grid lines with light grey color (0xc0c0c0)
    c->setPlotArea(70, 65, 400, 350, -1, -1, Chart::Transparent, 0xc0c0c0, -1);

    // Add a legend box at (70, 30) (top of the chart) with horizontal layout. Use 12pt Times Bold
    // Italic font. Set the background and border color to Transparent.
    c->addLegend(70, 30, false, "timesbi.ttf", 12)->setBackground(Chart::Transparent);

    // Add a title to the chart using 18pt Times Bold Itatic font.
    c->addTitle("Product Comparison Chart", "timesbi.ttf", 18);

    // Add titles to the axes using 12pt Arial Bold Italic font
    c->yAxis()->setTitle("Capacity (tons)", "arialbi.ttf", 12);
    c->xAxis()->setTitle("Range (miles)", "arialbi.ttf", 12);

    // Set the axes line width to 3 pixels
    c->xAxis()->setWidth(3);
    c->yAxis()->setWidth(3);

    // Add (dataX0, dataY0) as a scatter layer with red (ff3333) glass spheres, where the sphere
    // size is modulated by dataZ0. This creates a bubble effect.
    c->addScatterLayer(DoubleArray(dataX0, (int)(sizeof(dataX0) / sizeof(dataX0[0]))), DoubleArray(
        dataY0, (int)(sizeof(dataY0) / sizeof(dataY0[0]))), "Technology AAA",
        Chart::GlassSphere2Shape, 15, 0xff3333)->setSymbolScale(DoubleArray(dataZ0, (int)(sizeof(
        dataZ0) / sizeof(dataZ0[0]))));

    // Add (dataX1, dataY1) as a scatter layer with blue (0000ff) glass spheres, where the sphere
    // size is modulated by dataZ1. This creates a bubble effect.
    c->addScatterLayer(DoubleArray(dataX1, (int)(sizeof(dataX1) / sizeof(dataX1[0]))), DoubleArray(
        dataY1, (int)(sizeof(dataY1) / sizeof(dataY1[0]))), "Technology BBB",
        Chart::GlassSphere2Shape, 15, 0x0000ff)->setSymbolScale(DoubleArray(dataZ1, (int)(sizeof(
        dataZ1) / sizeof(dataZ1[0]))));

    // Output the chart
    c->makeChart("threedbubble2.png");

    //free up resources
    delete c;
    return 0;
}