testColor.cpp

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#include <iostream>
#include "DGtal/base/Common.h"
#include "ConfigTest.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/io/Color.h"
 
using namespace std;
using namespace DGtal;
 
// Functions for testing class Color.
 
bool testColor()
{
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  trace.beginBlock ( "Testing Color ..." );
 
  Color b(0,0,0,255);
  Color g(32,32,32,255);
  Color gg(64,64,64,255);
  Color w(255,255,255,255);
 
  trace.info() << " B+G = g "<< b+g<<std::endl;
  nbok += ((b+g)==g) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "add" << std::endl;
 
  trace.info() << " g+g = gg "<< g*2<< " expected ="<<gg<<std::endl;
  nbok += ((g+g)==gg) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "add (bis)" << std::endl;
 
  trace.info() << " W+W = w "<< w+w<<std::endl;
  nbok += ((w+w)==w) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "max " << std::endl;
 
  trace.info() << " g*2 = gg "<< g*2<< " expected ="<<gg<<std::endl;
  nbok += ((g*2)==gg) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "coeff" << std::endl;
 
  trace.info() << " 1.*red = red "<< 1.0*Color::Red<< " expected ="<<Color::Red<<std::endl;
  nbok += ((1.0*Color::Red)==Color::Red) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "coeff" << std::endl;
 
  trace.info() << " 2*g = gg "<< 2.0*g<< " expected ="<<gg<<std::endl;
  nbok += ((2*g)==gg) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "coeff" << std::endl;
 
  //Checking alpha channel
  Color a(0,0,0,64);
  Color aa(0,0,0,32);
  Color c = a+aa;
#ifdef COLOR_WITH_ALPHA_ARITH
  trace.info() << " a+aa = "<< a+aa<<std::endl;
  nbok += (c == Color(0,0,0,96)) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "alpha arith (enabled)" << std::endl;
#else
  trace.info() << " a+aa = "<< a+aa<<std::endl;
  nbok += (c == Color(0,0,0,64)) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "alpha arith (disabled)" << std::endl;
#endif
 
  Color val;
  val.setRGBi(0,0,0,255);
  val += 1.0*Color::Red;
  trace.info() << " val == Color::Red "<< val<<std::endl;
  nbok += (val==Color::Red) ? 1 : 0;
  nb++;
 
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "red" << std::endl;
 
  // Test Color is trivialy_copiable
  const auto is_trivially_copyable_ = std::is_trivially_copyable<Color>::value;
  trace.info() << "is_trivially_copyable: "<< is_trivially_copyable_ <<std::endl;
  nbok += (is_trivially_copyable_) ? 1 : 0;
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") "
               << "is_trivially_copyable" << std::endl;
 
  trace.endBlock();
 
  return nbok == nb;
}
 
// Standard services - public :
 
int main( int argc, char** argv )
{
  trace.beginBlock ( "Testing class Color" );
  trace.info() << "Args:";
  for ( int i = 0; i < argc; ++i )
    trace.info() << " " << argv[ i ];
  trace.info() << endl;
 
  bool res = testColor(); // && ... other tests
  trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
  trace.endBlock();
  return res ? 0 : 1;
}
//                                                                           //