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ImageMagick-6.1.1/Magick++/tests/color.cpp File Reference

#include <Magick++.h>
#include <string>
#include <iostream>

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Defines
#define	MagickEpsilon   1.0e-12
Functions
int	main (int, char **argv)

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Define Documentation

#define MagickEpsilon   1.0e-12

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Function Documentation

int main (  int  , char **  argv )

Definition at line 16 of file color.cpp. References Magick::Color, InitializeMagick(), MagickEpsilon, MaxRGB, and Magick::ColorGray::shade(). { // Initialize ImageMagick install location for Windows InitializeMagick(*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 }, { "green", 0,0.5019607843137256,0 }, { "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 QuantumDepth == 8 string expectedString = "#AABBCC"; #elif QuantumDepth == 16 string expectedString = "#AAAABBBBCCCC"; #elif QuantumDepth == 32 string expectedString = "#AAAAAAAABBBBBBBBCCCCCCCC"; #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 { #undef MagickEpsilon #define MagickEpsilon 1.0e-12 double resolution = 1.0/MaxRGB; double max_error = resolution + MagickEpsilon; if ( resolution < 0.0001 ) resolution = 0.0001; 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; } Here is the call graph for this function:

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