[The following project is available in "cppdemo/threeddepthpie".]
#include "chartdir.h"
#include
void createChart(int img, const char *filename)
{
char buffer[256];
//the tilt angle of the pie
int depth = img * 5 + 5;
//The data for the pie chart
double data[] = {25, 18, 15, 12, 8, 30, 35};
//Create a PieChart object of size 100 x 110 pixels
PieChart *c = new PieChart(100, 110);
//Set the center of the pie at (50, 55) and the radius to 38 pixels
c->setPieSize(50, 55, 38);
//Set the depth of the 3D pie
c->set3D(depth);
//Add a title showing the depth
sprintf(buffer, "Depth = %d pixels", depth);
c->addTitle(buffer, "arial.ttf", 8);
//Set the pie data
c->setData(DoubleArray(data, sizeof(data)/sizeof(*data)));
//Disable the sector labels by setting the color to Transparent
c->setLabelStyle("", 8, Transparent);
//output the chart
c->makeChart(filename);
//free up resources
delete c;
}
int main(int argc, char *argv[]) {
createChart(0, "threeddepthpie0.png");
createChart(1, "threeddepthpie1.png");
createChart(2, "threeddepthpie2.png");
createChart(3, "threeddepthpie3.png");
createChart(4, "threeddepthpie4.png");
return 0;
}
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