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84 lines
1.7 KiB
84 lines
1.7 KiB
//-----------------------------------------------------------------
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// simpleplot.cpp
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//
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// A simple example which shows how to use SurfacePlot
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//-----------------------------------------------------------------
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#include <math.h>
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#include <qapplication.h>
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#include <qwt3d_surfaceplot.h>
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#include <qwt3d_function.h>
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using namespace Qwt3D;
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class Rosenbrock : public Function
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{
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public:
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Rosenbrock(SurfacePlot& pw)
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:Function(pw)
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{
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}
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double operator()(double x, double y)
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{
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return log((1-x)*(1-x) + 100 * (y - x*x)*(y - x*x)) / 8;
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}
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};
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class Plot : public SurfacePlot
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{
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public:
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Plot();
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};
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Plot::Plot()
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{
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setTitle("A Simple SurfacePlot Demonstration");
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Rosenbrock rosenbrock(*this);
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rosenbrock.setMesh(41,31);
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rosenbrock.setDomain(-1.73,1.5,-1.5,1.5);
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rosenbrock.setMinZ(-10);
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rosenbrock.create();
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setRotation(30,0,15);
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setScale(1,1,1);
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setShift(0.15,0,0);
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setZoom(0.9);
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for (unsigned i=0; i!=coordinates()->axes.size(); ++i)
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{
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coordinates()->axes[i].setMajors(7);
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coordinates()->axes[i].setMinors(4);
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}
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coordinates()->axes[X1].setLabelString("x-axis");
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coordinates()->axes[Y1].setLabelString("y-axis");
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//coordinates()->axes[Z1].setLabelString(QChar(0x38f)); // Omega - see http://www.unicode.org/charts/
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setCoordinateStyle(BOX);
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updateData();
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updateGL();
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}
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int main(int argc, char **argv)
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{
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QApplication a(argc, argv);
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Plot plot;
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#if QT_VERSION < 0x040000
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a.setMainWidget(&plot);
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#endif
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plot.resize(800,600);
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plot.show();
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return a.exec();
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}
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