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// Copyright (C) 1999-200
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include "lut.h"
#include "colorbar.h"
// LUT Parser Stuf
#undef yyFlexLexer
#define yyFlexLexer rgbFlexLexer
#include <FlexLexer.h>
void* rgblval;
rgbFlexLexer* rgblexx;
extern int rgbparse(LUTColorMap*, rgbFlexLexer*);
int rgblex(void* vval, rgbFlexLexer* ll)
{
rgblval = vval;
rgblexx = ll;
return ll ? ll->yylex() : 0;
}
void rgberror(LUTColorMap* cm, rgbFlexLexer* ll, const char* m) {}
// RGBColor
istream& operator>>(istream& str, RGBColor& cc)
{
str >> cc.red_ >> cc.green_ >> cc.blue_;
return str;
}
ostream& operator<<(ostream& str, RGBColor& cc)
{
str.setf(ios::fixed, ios::floatfield);
str << setw(8) << setprecision(6)
<< cc.red_ << " " << cc.green_ << " " << cc.blue_ << endl;
return str;
}
// LUTColorMap
LUTColorMap::LUTColorMap(Colorbar* p) : ColorMapInfo(p)
{
}
void LUTColorMap::newRGBColor(float r, float g, float b)
{
colors.append(new RGBColor(r,g,b));
}
int LUTColorMap::load()
{
ifstream str(fileName);
if (!str)
return 0;
rgbFlexLexer* ll = new rgbFlexLexer(&str);
rgbparse(this, ll);
delete ll;
if (colors.isEmpty())
return 0; // bailout
else
return 1; // we found at least one RGBColor
}
int LUTColorMap::load(const char* var)
{
const char* ccmd = Tcl_GetVar(parent_->getInterp(), var,
TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG);
if (!ccmd)
return 0;
// only make command string as long as needed
// or the rest will be processed as garbage
int len = strlen(ccmd)+2;
char* buf = new char[len];
memcpy(buf, ccmd, len);
// add terminator to make parser happy
buf[len-2] = '\n';
buf[len-1] = '\0';
string x(buf);
istringstream istr(x);
rgbFlexLexer* ll = new rgbFlexLexer(&istr);
rgbparse(this, ll);
delete ll;
delete [] buf;
if (colors.isEmpty())
return 0; // bailout
else
return 1; // we found at least one RGBColor
}
int LUTColorMap::save(const char* fn)
{
ofstream fstr(fn);
if (!fstr)
return 0;
fstr << *this;
return 1;
}
unsigned char LUTColorMap::getRedChar(int ii, int count)
{
int size = colors.count();
int index = (int)((ii*size/count) + .5);
if (index>=0 && index<size)
return (unsigned char)(colors[index]->red() * UCHAR_MAX);
else
return 0;
}
unsigned char LUTColorMap::getGreenChar(int ii, int count)
{
int size = colors.count();
int index = (int)((ii*size/count) + .5);
if (index>=0 && index<size)
return (unsigned char)(colors[index]->green() * UCHAR_MAX);
else
return 0;
}
unsigned char LUTColorMap::getBlueChar(int ii, int count)
{
int size = colors.count();
int index = (int)((ii*size/count) + .5);
if (index>=0 && index<size)
return (unsigned char)(colors[index]->blue() * UCHAR_MAX);
else
return 0;
}
unsigned short LUTColorMap::getRedShrt(int ii, int count)
{
int size = colors.count();
int index = (int)((ii*size/count) + .5);
if (index >=0 && index < size)
return (unsigned short)(colors[index]->red() * USHRT_MAX);
else
return 0;
}
unsigned short LUTColorMap::getGreenShrt(int ii, int count)
{
int size = colors.count();
int index = (int)((ii*size/count) + .5);
if (index>=0 && index<size)
return (unsigned short)(colors[index]->green() * USHRT_MAX);
else
return 0;
}
unsigned short LUTColorMap::getBlueShrt(int ii, int count)
{
int size = colors.count();
int index = (int)((ii*size/count) + .5);
if (index>=0 && index<size)
return (unsigned short)(colors[index]->blue() * USHRT_MAX);
else
return 0;
}
ostream& operator<<(ostream& str, LUTColorMap& cc)
{
cc.colors.head();
do
str << *cc.colors.current();
while (cc.colors.next());
return str;
}
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