#include "chartdir.h"
#include <math.h>
int main(int argc, char *argv[])
{
// The x and y coordinates of the grid
double dataX[] = {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0};
double dataY[] = {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0};
// The values at the grid points. In this example, we will compute the values using the formula
// z = sin((x - 0.5) * 2 * pi) * sin((y - 0.5) * 2 * pi)
double dataZ[(int)(sizeof(dataX) / sizeof(dataX[0])) * (int)(sizeof(dataY) / sizeof(dataY[0]))];
for(int yIndex = 0; yIndex < (int)(sizeof(dataY) / sizeof(dataY[0])); ++yIndex) {
double y = (dataY[yIndex] - 0.5) * 2 * 3.1416;
for(int xIndex = 0; xIndex < (int)(sizeof(dataX) / sizeof(dataX[0])); ++xIndex) {
double x = (dataX[xIndex] - 0.5) * 2 * 3.1416;
dataZ[yIndex * (int)(sizeof(dataX) / sizeof(dataX[0])) + xIndex] = sin(x) * sin(y);
}
}
// Create a SurfaceChart object of size 720 x 540 pixels
SurfaceChart *c = new SurfaceChart(720, 540);
// Add a title to the chart using 20 points Times New Roman Italic font
c->addTitle("Quantum Wave Function", "timesi.ttf", 20);
// Set the center of the plot region at (360, 245), and set width x depth x height to 360 x 360
// x 270 pixels
c->setPlotRegion(360, 245, 360, 360, 270);
// Set the elevation and rotation angles to 20 and 30 degrees
c->setViewAngle(20, 30);
// Set the data to use to plot the chart
c->setData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))), DoubleArray(dataY,
(int)(sizeof(dataY) / sizeof(dataY[0]))), DoubleArray(dataZ, (int)(sizeof(dataZ) / sizeof(
dataZ[0]))));
// Spline interpolate data to a 80 x 80 grid for a smooth surface
c->setInterpolation(80, 80);
// Set surface grid lines to semi-transparent black (dd000000)
c->setSurfaceAxisGrid(0xdd000000);
// Set contour lines to semi-transparent white (80ffffff)
c->setContourColor(0x80ffffff);
// Add a color axis (the legend) in which the left center is anchored at (645, 270). Set the
// length to 200 pixels and the labels on the right side. Use smooth gradient coloring.
c->setColorAxis(645, 270, Chart::Left, 200, Chart::Right)->setColorGradient();
// Set the x, y and z axis titles using 10 points Arial Bold font
c->xAxis()->setTitle("x/L(x)", "arialbd.ttf", 10);
c->yAxis()->setTitle("y/L(y)", "arialbd.ttf", 10);
c->zAxis()->setTitle("Wave Function Amplitude", "arialbd.ttf", 10);
// Output the chart
c->makeChart("surface2.jpg");
//free up resources
delete c;
return 0;
} |