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graph_plot.cpp
117 lines (99 loc) · 2.9 KB
/
graph_plot.cpp
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#include "graph_plot.h"
QwtBeginner::QwtBeginner(QWidget *parent)
: QWidget(parent)
{
funPlot = new QwtPlot;
funPlot->setTitle("Function");
QPen myPen = QPen(Qt::blue);
myPen.setWidth(2);
myPen.setCapStyle(Qt::RoundCap);
QPen dotPen = QPen(Qt::red);
dotPen.setWidth(5);
dotPen.setCapStyle(Qt::RoundCap);
myCurve = new QwtPlotCurve;
myCurve->setPen(myPen);
myCurve->attach(funPlot);
dot = new QwtPlotCurve;
dot->setPen(dotPen);
dot->attach(funPlot);
dot->setStyle(QwtPlotCurve::Dots);
QHBoxLayout *plotsLayout = new QHBoxLayout;
plotsLayout->setSpacing(10);
plotsLayout->addWidget(funPlot);
QVBoxLayout *widgetLayout = new QVBoxLayout;
widgetLayout->addLayout(plotsLayout);
setLayout(widgetLayout);
}
void QwtBeginner::eval(double * X, double * Y, int n, int ** tr,
const char* title,double* T,double x,double y,double res_temp)
{
size=n;
xval=X;
yval=Y;
tnum=size-2;
triang=tr;
funPlot->setTitle(title);
temp=T;
res=res_temp;
plot_xy=new double* [2];
for (int i=0;i<2;i++)
plot_xy[i]=new double [tnum*4];
xd=new double [tnum*4+1];
yd=new double [tnum*4+1];
xd[0]=x;
yd[0]=y;
for (int i=0,k=0;i<tnum;i++)
{
plot_xy[0][k]=xval[triang[i][0]];
plot_xy[1][k++]=yval[triang[i][0]];
plot_xy[0][k]=xval[triang[i][1]];
plot_xy[1][k++]=yval[triang[i][1]];
plot_xy[0][k]=xval[triang[i][2]];
plot_xy[1][k++]=yval[triang[i][2]];
plot_xy[0][k]=xval[triang[i][0]];
plot_xy[1][k++]=yval[triang[i][0]];
}
for (int i=1;i<tnum*4+1;i++)
{
xd[i]=plot_xy[0][i];
yd[i]=plot_xy[1][i];
}
myCurve->setSamples(plot_xy[0], plot_xy[1], tnum*4);
dot->setSamples(xd,yd,tnum*4+1);
markers = new QwtPlotMarker[size+1];
QString qstr;
QwtText texts;
std::string s1;
for (int i=0;i<size;i++)
{
std::ostringstream oss;
oss << temp[i];
s1=oss.str();
qstr=s1.data();
texts.setText(qstr);
markers[i].setXValue(xval[i]);
markers[i].setYValue(yval[i]);
markers[i].setLabel(texts);
markers[i].attach(funPlot);
if (xval[i]<0.3)
{
markers[i].setLabelAlignment(Qt::AlignRight);
}
else markers[i].setLabelAlignment(Qt::AlignLeft);
}
std::ostringstream oss;
oss << res;
s1=oss.str();
qstr=s1.data();
texts.setText(qstr);
markers[size].setXValue(xd[0]);
markers[size].setYValue(yd[0]);
markers[size].setLabel(texts);
markers[size].attach(funPlot);
if (xd[0]<0.3)
{
markers[size].setLabelAlignment(Qt::AlignRight);
}
else markers[size].setLabelAlignment(Qt::AlignLeft);
funPlot->replot();
}