This example demonstrates using
PieChart.set3D2 to create a 3D pie chart where sectors have different 3D heights.
[The following project is available in "cppdemo/multidepthpie".]
#include "chartdir.h"
int main(int argc, char *argv[])
{
//The data for the pie chart
double data[] = {72, 18, 15, 12};
//The labels for the pie chart
const char *labels[] = {"Labor", "Machinery", "Facilities", "Computers"};
//The depths for the sectors
double depths[] = {30, 20, 10, 10};
//Create a PieChart object of size 360 x 300 pixels, with a light blue
//(0xccccff) background and a 1 pixel 3D border
PieChart *c = new PieChart(360, 300, 0xccccff, -1, 1);
//Set the center of the pie at (180, 175) and the radius to 100 pixels
c->setPieSize(180, 175, 100);
//Add a title box using Times Bold Italic/14 points as font and 0x9999ff as
//background color
c->addTitle("Project Cost Breakdown", "timesbi.ttf", 14)->setBackground(
0x9999ff);
//Set the pie data and the pie labels
c->setData(DoubleArray(data, sizeof(data)/sizeof(*data)), StringArray(
labels, sizeof(labels)/sizeof(*labels)));
//Draw the pie in 3D
c->set3D(DoubleArray(depths, sizeof(depths)/sizeof(*depths)));
//Set the start angle to 225 degrees may improve layout when the depths of
//the sector are sorted in descending order, because it ensures the tallest
//sector is at the back.
c->setStartAngle(225);
//output the chart
c->makeChart("multidepthpie.png");
//free up resources
delete c;
return 0;
}
|
© 2003 Advanced Software Engineering Limited. All rights reserved.