#include "chartdir.h"
int main(int argc, char *argv[])
{
// Coordinates of the starting points of the vectors
double radius[] = {5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 20,
20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 25, 25, 25, 25, 25, 25, 25, 25,
25, 25, 25, 25};
double angle[] = {0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 0, 30,
60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 0, 30, 60, 90, 120, 150, 180,
210, 240, 270, 300, 330, 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300,
330, 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330};
// Magnitude and direction of the vectors
double magnitude[] = {5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
double direction[] = {60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 0, 30, 60,
90, 120, 150, 180, 210, 240, 270, 300, 330, 0, 30, 60, 90, 120, 150, 180,
210, 240, 270, 300, 330, 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300,
330, 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 0, 30};
// Create a PolarChart object of size 460 x 460 pixels
PolarChart *c = new PolarChart(460, 460);
// Add a title to the chart at the top left corner using 15pts Arial Bold Italic
// font
c->addTitle("Polar Vector Chart Demonstration", "arialbi.ttf", 15);
// Set center of plot area at (230, 240) with radius 180 pixels
c->setPlotArea(230, 240, 180);
// Set the grid style to circular grid
c->setGridStyle(false);
// Set angular axis as 0 - 360, with a spoke every 30 units
c->angularAxis()->setLinearScale(0, 360, 30);
// Add a polar vector layer to the chart with blue (0000ff) vectors
c->addVectorLayer(DoubleArray(radius, sizeof(radius)/sizeof(radius[0])),
DoubleArray(angle, sizeof(angle)/sizeof(angle[0])), DoubleArray(magnitude,
sizeof(magnitude)/sizeof(magnitude[0])), DoubleArray(direction,
sizeof(direction)/sizeof(direction[0])), Chart::RadialAxisScale, 0x0000ff);
// Output the chart
c->makeChart("polarvector.png");
//free up resources
delete c;
return 0;
} |