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color.cpp
// This may look like C code, but it is really -*- C++ -*-
//
// Copyright Bob Friesenhahn, 1999, 2000, 2001, 2002, 2003
//
// Test Magick::Color classes
//
#include <Magick++.h>
#include <string>
#include <iostream>
using namespace std;
using namespace Magick;
int main( int /*argc*/, char **argv)
{
// Initialize ImageMagick install location for Windows
MagickPlusPlusGenesis genesis(*argv);
int failures=0;
try {
//
// Verify conversion from named colors as well as ColorRGB constructor
//
{
struct colorStr
{
const char* color;
double red;
double green;
double blue;
};
// Convert ratios from rgb.txt via value/255
struct colorStr colorMap [] =
{
{ "red", 1,0,0 },
{ "lime", 0,1,0 },
{ "blue", 0,0,1 },
{ "black", 0,0,0 },
{ "white", 1,1,1 },
{ "cyan", 0,1,1 },
{ "magenta", 1,0,1 },
{ "yellow", 1,1,0 },
{ NULL, 0,0,0 }
};
for ( int i = 0; colorMap[i].color != NULL; i++ )
{
{
Color color( colorMap[i].color );
ColorRGB colorMatch( colorMap[i].red,
colorMap[i].green,
colorMap[i].blue );
if ( color != colorMatch )
{
++failures;
cout << "Line: " << __LINE__ << " Color(\""
<< colorMap[i].color << "\") is "
<< string(color)
<< " rather than "
<< string(colorMatch)
<< endl;
// printf ("Green: %10.16f\n", color.green());
}
}
}
}
// Test conversion to/from X11-style color specifications
{
const char * colorStrings[] =
{
"#ABC",
"#AABBCC",
"#AAAABBBBCCCC",
NULL
};
#if MAGICKCORE_QUANTUM_DEPTH == 8
string expectedString = "#AABBCC";
#elif MAGICKCORE_QUANTUM_DEPTH == 16
string expectedString = "#AAAABBBBCCCC";
#elif MAGICKCORE_QUANTUM_DEPTH == 32
string expectedString = "#AAAAAAAABBBBBBBBCCCCCCCC";
#elif MAGICKCORE_QUANTUM_DEPTH == 64
string expectedString = "#AAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCC";
#else
# error Quantum depth not supported!
#endif
for ( int i = 0; colorStrings[i] != NULL; ++i )
{
if ( string(Color(colorStrings[i])) != expectedString )
{
++failures;
cout << "Line: " << __LINE__
<< " Conversion from " << colorStrings[i]
<< " is "
<< string(Color(colorStrings[i])) << " rather than "
<< expectedString
<< endl;
}
}
}
// Test ColorGray
{
double resolution = 1.0/QuantumRange;
if ( resolution < 0.0000001 )
resolution = 0.0000001;
double max_error = resolution + MagickEpsilon;
for( double value = 0; value < 1.0 + MagickEpsilon; value += resolution )
{
ColorGray gray(value);
if ( gray.shade() < value - max_error || gray.shade() > value + max_error )
{
++failures;
cout << "Line: " << __LINE__
<< " shade is "
<< gray.shade()
<< " rather than nominal "
<< value
<< endl;
}
}
}
}
catch( Exception &error_ )
{
cout << "Caught exception: " << error_.what() << endl;
return 1;
}
catch( exception &error_ )
{
cout << "Caught exception: " << error_.what() << endl;
return 1;
}
if ( failures )
{
cout << failures << " failures" << endl;
return 1;
}
return 0;
}
Magick::ColorGray
Definition Color.h:247
Magick::ColorRGB
Definition Color.h:352
Magick::Color
Definition Color.h:37
Magick::Exception
Definition Exception.h:25
Magick::MagickPlusPlusGenesis
Definition Functions.h:44