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colors.cpp
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colors.cpp
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/***************************************************************************
colors.cpp
W. Michael Brown
-------------------
begin : Wed Jun 11 2003
copyright : (C) 2003 by mbrown
email : wmbrown@sandia.gov
***************************************************************************/
#include "colors.h"
Colors::Colors() {
colors.insert(pair<string,colorPt>("white",colorPt(1,1,1)));
colors.insert(pair<string,colorPt>("red",colorPt(1,0,0)));
colors.insert(pair<string,colorPt>("green",colorPt(0,1,0)));
colors.insert(pair<string,colorPt>("blue",colorPt(0,0,1)));
colors.insert(pair<string,colorPt>("cmyk_blue",colorPt(0.074,0.168,0.614)));
colors.insert(pair<string,colorPt>("yellow",colorPt(1,1,0)));
colors.insert(pair<string,colorPt>("purple",colorPt(0.697,0.2,0.697)));
colors.insert(pair<string,colorPt>("hotpink",colorPt(1,0,0.5)));
colors.insert(pair<string,colorPt>("brown",colorPt(0.551,0.272,0.15)));
colors.insert(pair<string,colorPt>("orange",colorPt(1,0.5,0)));
colors.insert(pair<string,colorPt>("black",colorPt(0,0,0)));
colors.insert(pair<string,colorPt>("magenta",colorPt(1,0,1)));
colors.insert(pair<string,colorPt>("slate",colorPt(0.5,0.5,1)));
colors.insert(pair<string,colorPt>("marine",colorPt(0,0.5,1)));
colors.insert(pair<string,colorPt>("cmyk_marine",colorPt(0.273,0.469,0.758)));
colors.insert(pair<string,colorPt>("teal",colorPt(0.2,0,0.598)));
colors.insert(pair<string,colorPt>("forest",colorPt(0.098,0.5,0.098)));
colors.insert(pair<string,colorPt>("deep",colorPt(0.098,0.098,0.5)));
colors.insert(pair<string,colorPt>("grey",colorPt(0.5,0.5,0.5)));
colors.insert(pair<string,colorPt>("wheat",colorPt(0.988,0.819,0.646)));
}
Colors::~Colors(){
}
// Number of colors in the map
unsigned Colors::size() {
return colors.size();
}
// Return the color in the gradient between start and end according to
// value
colorPt Colors::gradient(double start, double end, double value,
const colorPt &startcolor, const colorPt &endcolor) {
double percent;
if (value<start)
return startcolor;
else if (value>end)
return endcolor;
if (start==end)
return startcolor;
percent=((value-start)/(end-start));
return ((endcolor-startcolor)*percent)+startcolor;
}
// Three color gradient
colorPt Colors::gradient(double start, double mid, double end, double value,
const colorPt &startcolor, const colorPt &midcolor,
const colorPt &endcolor) {
double percent;
if (value==mid)
return midcolor;
else if (value<start)
return startcolor;
else if (value>end)
return endcolor;
else if (value<mid) {
percent=((value-start)/(mid-start));
return ((midcolor-startcolor)*percent)+startcolor;
} else {
if (mid==end)
return midcolor;
percent=((value-mid)/(end-mid));
return ((endcolor-midcolor)*percent)+midcolor;
}
}
// Output the colors to standard out
void Colors::outputcolors() {
map<string, colorPt>::iterator m;
for (m=colors.begin(); m!=colors.end(); m++)
cout << " " << m->first << endl;
}
// Return a string with the list of available colors
string Colors::colorlist() {
string colorl;
map<string, colorPt>::iterator m;
for (m=colors.begin(); m!=colors.end(); m++)
colorl+="\n\t"+m->first;
colorl+="\n";
return colorl;
}
colorPt Colors::operator[](const string &name) {
map<string, colorPt>::iterator m;
m=colors.find(name);
if (m==colors.end())
return colorPt(1,1,1); // Return white if not found
else
return m->second;
}

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