Rainbow Class Reference

A rainbow of colors. More...

#include <Rainbow.h>

List of all members.

Public Member Functions

Rainbow (int number_of_colors=100)

int GetRelativeColor (double rel)

Detailed Description

A rainbow of colors.

Id: Rainbow.h,v 1.2 2002/11/04 21:11:56 bv Exp

Midad/Base

Allocates a spectrum of colors useful for a "COLZ" type of scale. If colors are already allocated, they are not re-allocated (ROOT internal behavior).

Contact: bv@bnl.gov

Created on: Mon Sep 9 12:19:15 2002

Definition at line 26 of file Rainbow.h.

Constructor & Destructor Documentation

Rainbow::Rainbow ( int number_of_colors = 100 )

Definition at line 5 of file Rainbow.cxx.
00006 { 00007 // for now just hard code some stuff. 00008 for (int n=0; n<number_of_colors; ++n) { 00009 // 330, not 360 as we don't want to loop back to 0 degrees color 00010 float hue = (300.0*(n+1))/(1.0*number_of_colors); 00011 float r,g,b; 00012 TColor::HLStoRGB(hue, 0.5, 1.0, r,g,b); 00013 int col = TColor::GetColor(r,g,b); 00014 this->push_back(col); 00015 } 00016 }

Member Function Documentation

int Rainbow::GetRelativeColor ( double rel )

Definition at line 18 of file Rainbow.cxx.
Referenced by GfxDigitList::GetDigitColor(), GfxStripList::GetStripColor(), ColorAxis::PaintPalette(), and PmtSpot::SetRelativeColor().
00019 { 00020 if (rel > 1) rel = 1; 00021 if (rel < 0) rel = 0; 00022 00023 rel = 1 - rel; // reverse colors 00024 00025 int num = this->size(); 00026 int index = (int)(rel*num); 00027 if (index == num) --index; 00028 if (index < 0) index = 0; 00029 00030 int col = (*this)[index]; 00031 00032 return col; 00033 }

The documentation for this class was generated from the following files:

Generated on Mon Feb 15 11:10:08 2010 for loon by

1.3.9.1


Public Member Functions
	Rainbow (int number_of_colors=100)
int	GetRelativeColor (double rel)