Revision 8c49506593ec98a48775b3771f3b537a1b974c45 authored by Timur Pocheptsov on 26 March 2014, 16:41:21 UTC, committed by Timur Pocheptsov on 26 March 2014, 16:41:21 UTC
1 parent 6fbc5a9
glrose.C
// Render a TF2 looking like a rose.
// Author: Timur Pocheptsov
void glrose()
{
//Define and set user's palette,
//use polar system.
const Int_t paletteSize = 10;
Float_t rgb[paletteSize * 3] =
{0.80f, 0.55f, 0.40f,
0.85f, 0.60f, 0.45f,
0.90f, 0.65f, 0.50f,
0.95f, 0.70f, 0.55f,
1.f, 0.75f, 0.60f,
1.f, 0.80f, 0.65f,
1.f, 0.85f, 0.70f,
1.f, 0.90f, 0.75f,
1.f, 0.95f, 0.80f,
1.f, 1.f, 0.85f};
Int_t palette[paletteSize] = {0};
for (Int_t i = 0; i < paletteSize; ++i)
palette[i] = TColor::GetColor(rgb[i * 3], rgb[i * 3 + 1], rgb[i * 3 + 2]);
gStyle->SetPalette(paletteSize, palette);
gStyle->SetCanvasPreferGL(1);
TCanvas *cnv = new TCanvas("glc", "Surface sample", 200, 10, 600, 550);
TPaveLabel *title = new TPaveLabel(0.04, 0.86, 0.96, 0.98,
"\"glsurf2pol\" option + user defined palette.");
title->SetFillColor(32);
title->Draw();
TPad *rosePad = new TPad("box", "box", 0.04, 0.04, 0.96, 0.8);
rosePad->Draw();
TF2 *fun = new TF2("a", "cos(y)*sin(x)+cos(x)*sin(y)", -6, 6, -6, 6);
fun->SetContour(paletteSize);
fun->SetNpx(30);
fun->SetNpy(30);
rosePad->cd();
fun->Draw("glsurf2pol");
}
![swh spinner](/static/img/swh-spinner.gif)
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