ChartDirector 6.0 (C++ Edition)

Pyramid Gap


          

This example demonstrates the effects of different pyramid layer gap sizes, configured with PyramidChart.setLayerGap.

Source Code Listing

[The following code is available in "cppdemo/pyramidgap". 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"
#include <stdio.h>

void createChart(int chartIndex, const char *filename)
{
    char buffer[256];

    // The data for the pyramid chart
    double data[] = {156, 123, 211, 179};

    // The colors for the pyramid layers
    int colors[] = {0x66aaee, 0xeebb22, 0xcccccc, 0xcc88ff};

    // The layer gap
    double gap = chartIndex * 0.01;

    // Create a PyramidChart object of size 200 x 200 pixels, with white (ffffff) background and
    // grey (888888) border
    PyramidChart *c = new PyramidChart(200, 200, 0xffffff, 0x888888);

    // Set the pyramid center at (100, 100), and width x height to 60 x 120 pixels
    c->setPyramidSize(100, 100, 60, 120);

    // Set the layer gap
    sprintf(buffer, "Gap = %g", gap);
    c->addTitle(buffer, "ariali.ttf", 15);
    c->setLayerGap(gap);

    // Set the elevation to 15 degrees
    c->setViewAngle(15);

    // Set the pyramid data
    c->setData(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))));

    // Set the layer colors to the given colors
    c->setColors(Chart::DataColor, IntArray(colors, (int)(sizeof(colors) / sizeof(colors[0]))));

    // Output the chart
    c->makeChart(filename);

    //free up resources
}

int main(int argc, char *argv[])
{
    createChart(0, "pyramidgap0.png");
    createChart(1, "pyramidgap1.png");
    createChart(2, "pyramidgap2.png");
    createChart(3, "pyramidgap3.png");
    createChart(4, "pyramidgap4.png");
    createChart(5, "pyramidgap5.png");
    return 0;
}