// Some of the original files this macro was developed with
// plane004 000deg 2008_11_06 09_26_26.root
// plane999 999deg 2008_10_26 20_28_06.root
// plane999 999deg 2008_10_30 22_43_12.root
// plane999 999deg 2008_11_06 08_01_58.root
// plane999 999deg 2008_11_06 08_31_51.root
// plane999 999deg 2008_11_06 08_51_09.root



//----------------
// fdc_mean
//----------------
void fdc_mean(const char *fname="plane004 000deg 2008_11_06 09_26_26.root")
{
	gROOT->Reset();
	gStyle->SetPalette(1);
	gStyle->SetPadRightMargin(0.125);

	// Open ROOT file and get pointer to scan TTree
	TFile *f = new TFile(fname);
	TH2D *depth_mean = (TH2D*)gROOT->FindObject("depth_mean");
	
	// Create a canvas to draw in later
	TCanvas *c1 = new TCanvas("c1", "", 650, 600);
	c1->SetTickx();
	c1->SetTicky();
	
	// Plot the mean
	depth_mean->GetZaxis()->SetRangeUser(3.0, 5.0);
	depth_mean->Draw("colz");

	// Draw a circle indicating the active area
	double x_center=56.0;
	double y_center=51.5;
	TEllipse *e = new TEllipse(x_center, y_center, 48.5, 48.5);
	e->SetLineColor(kBlack);
	e->SetLineWidth(3);
	e->SetLineStyle(2);
	e->SetFillStyle(0);
	e->Draw();
	
	// Label color ramp units
	TLatex *lab = new TLatex(120, 105, "mm");
	lab->SetTextSize(0.03);
	lab->SetTextAlign(21);
	lab->Draw();
	
	// Define output directory and make sure it exists
	char imagesdir[512];
	sprintf(imagesdir,"images/%s",fname);
	imagesdir[strlen(imagesdir)-5] = 0;
	char cmd[256];
	sprintf(cmd, "mkdir -p \"%s\"", imagesdir);
	system(cmd);
	
	// Write plots to output directory
	char filename[256];
	sprintf(filename,"%s/fdc_mean.gif", imagesdir);
	c1->SaveAs(filename);
	sprintf(filename,"%s/fdc_mean.pdf", imagesdir);
	c1->SaveAs(filename);
}