I used multiple TGraph2D to draw multiple triangles, but there was a memory leak and the resulting image was a bit strange
I don’t understand why there are so many dotted lines that seem to come out from the origin of the windows
auto c = new TCanvas("c", "Graph2D example", 0, 0, 600, 400);
for each (QString line in l)
{
QStringList s = line.split(" ", Qt::SkipEmptyParts);
TH2F* h1 = new TH2F("h1", "h1", 10, minx-0.5, maxx+0.5, 10, miny-0.5, maxy+0.5);
h1->SetMinimum(minz-0.5);
h1->SetMaximum(maxz+0.5);
auto dt = new TGraph2D(3);
dt->SetPoint(0, s[0].toDouble(), s[1].toDouble(), s[2].toDouble());
dt->SetPoint(1, s[3].toDouble(), s[4].toDouble(), s[5].toDouble());
dt->SetPoint(2, s[6].toDouble(), s[7].toDouble(), s[8].toDouble());
dt->SetHistogram(h1);
if (N == 0)
dt->Draw("TRI");
else
{
dt->Draw("TRI SAME");
}
N++;
}