EgtGeomKernel 1.9a1 :

- aggiunte funzioni per conversione colore RGB in HSV e viceversa
- modifiche a VolZmap per gestione Flag utensile.

Color.cpp

@@ -13,8 +13,12 @@
 
 //--------------------------- Include ----------------------------------------
 #include "stdafx.h"
+#include "/EgtDev/Include/EGkGeoConst.h"
 #include "/EgtDev/Include/EGkColor.h"
+#include "/EgtDev/Include/EGkAngle.h"
 #include "/EgtDev/Include/EGnStringUtils.h"
+#include "/EgtDev/Include/EGtNumUtils.h"
+#include <algorithm>
 
 using namespace std ;
 
@@ -103,3 +107,70 @@ GetSurfBackColor( Color cCol)
                     0.4 * fLum + 0.6 * cCol.GetBlue(),
                     cCol.GetAlpha()) ;
 }
+
+//----------------------------------------------------------------------------
+HSV
+GetHSVFromColor( const Color& cCol)
+{
+   double dMin = std::min( std::min( cCol.GetRed(), cCol.GetGreen()), cCol.GetBlue()) ;
+   double dMax = std::max( std::max( cCol.GetRed(), cCol.GetGreen()), cCol.GetBlue()) ;
+   double dDelta = dMax - dMin ;
+
+   if ( dDelta < EPS_ZERO)
+      return HSV( dMax, 0, 0) ;
+
+   if ( dMax < EPS_ZERO)
+      return HSV( 0, 0, 0) ;
+
+   HSV hsv ;
+   hsv.dVal = dMax ;
+   hsv.dSat = dDelta / dMax ;
+   if ( cCol.GetRed() >= dMax)                                        // tra giallo e magenta
+       hsv.dHue = ( cCol.GetGreen() - cCol.GetBlue()) / dDelta ;
+   else if( cCol.GetGreen() >= dMax)                                  // tra ciano e giallo
+       hsv.dHue = 2.0 + ( cCol.GetBlue() - cCol.GetRed()) / dDelta ;
+   else                                                               // tra magenta e ciano
+       hsv.dHue = 4.0 + ( cCol.GetRed() - cCol.GetGreen()) / dDelta ;
+  // trasformo in gradi
+   hsv.dHue *= 60.0 ;
+  // porto in 0-360 deg
+   if ( hsv.dHue < 0.0)
+      hsv.dHue += 360.0 ;
+
+   return hsv;
+}
+
+//----------------------------------------------------------------------------
+Color
+GetColorFromHSV( const HSV& hsv)
+{
+  // porto i valori nei limiti
+   double dHue = AngleNearAngle( hsv.dHue, ANG_STRAIGHT) ;
+   double dSat = Clamp( hsv.dSat, 0., 1.) ;
+   double dVal = Clamp( hsv.dVal, 0., 1.) ;
+  // se saturazione nulla
+   if ( dSat < EPS_ZERO)
+      return Color( dVal, dVal, dVal) ;
+  // calcolo
+   double dFraz = dHue / 60. ;
+   int nInd = int( dFraz) ;
+   double dRem = dFraz - nInd ;
+   double dP = dVal * ( 1.0 - dSat) ;
+   double dQ = dVal * ( 1.0 - ( dSat * dRem)) ;
+   double dT = dVal * ( 1.0 - ( dSat * (1.0 - dRem))) ;
+
+   switch ( nInd) {
+   case 0 :
+      return Color( dVal, dT, dP) ;
+   case 1 :
+      return Color( dQ, dVal, dP) ;
+   case 2 :
+      return Color( dP, dVal, dT) ;
+   case 3 :
+      return Color( dP, dQ, dVal) ;
+   case 4 :
+      return Color( dT, dP, dVal) ;
+   default :
+      return Color( dVal, dP, dQ) ;
+   }
+}