Merge pull request #4 from FOSSEE/develop

merging dev into master

1 files changed, 179 insertions, 0 deletions

diff --git a/common/gal/color4d.cpp b/common/gal/color4d.cpp
new file mode 100644
index 0000000..3b509d3
--- /dev/null
+++ b/common/gal/color4d.cpp
@@ -0,0 +1,179 @@
+/*
+ * This program source code file is part of KICAD, a free EDA CAD application.
+ *
+ * Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de
+ * Copyright (C) 2012 Kicad Developers, see change_log.txt for contributors.
+ *
+ * Color class
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#include <gal/color4d.h>
+
+using namespace KIGFX;
+
+COLOR4D::COLOR4D( EDA_COLOR_T aColor )
+{
+    r = g_ColorRefs[aColor].m_Red / 255.0;
+    g = g_ColorRefs[aColor].m_Green / 255.0;
+    b = g_ColorRefs[aColor].m_Blue / 255.0;
+    a = 1.0;
+}
+
+
+#ifdef WX_COMPATIBILITY
+    COLOR4D::COLOR4D( const wxColour& aColor )
+    {
+        r = aColor.Red();
+        g = aColor.Green();
+        b = aColor.Blue();
+        a = aColor.Alpha();
+    }
+#endif
+
+
+const bool COLOR4D::operator==( const COLOR4D& aColor )
+{
+    return a == aColor.a && r == aColor.r && g == aColor.g && b == aColor.b;
+}
+
+
+const bool COLOR4D::operator!=( const COLOR4D& aColor )
+{
+    return a != aColor.a || r != aColor.r || g != aColor.g || b != aColor.b;
+}
+
+
+void COLOR4D::ToHSV( double& aOutH, double& aOutS, double& aOutV ) const
+{
+    double min, max, delta;
+
+    min = r < g ? r : g;
+    min = min < b ? min : b;
+
+    max = r > g ? r : g;
+    max = max > b ? max : b;
+
+    aOutV = max;                                // v
+    delta = max - min;
+
+    if( max > 0.0 )
+    {
+        aOutS = ( delta / max );                  // s
+    }
+    else
+    {
+        // r = g = b = 0                        // s = 0, v is undefined
+        aOutS = 0.0;
+        aOutH = NAN;                            // its now undefined
+        return;
+    }
+
+    if( r >= max )                          // > is bogus, just keeps compiler happy
+        aOutH = ( g - b ) / delta;          // between yellow & magenta
+    else if( g >= max )
+        aOutH = 2.0 + ( b - r ) / delta;    // between cyan & yellow
+    else
+        aOutH = 4.0 + ( r - g ) / delta;    // between magenta & cyan
+
+    aOutH *= 60.0;                          // degrees
+
+    if( aOutH < 0.0 )
+        aOutH += 360.0;
+}
+
+
+void COLOR4D::FromHSV( double aInH, double aInS, double aInV )
+{
+    double hh, p, q, t, ff;
+    long i;
+
+    if( aInS <= 0.0 )    // < is bogus, just shuts up warnings
+    {
+        r = aInV;
+        g = aInV;
+        b = aInV;
+        return;
+    }
+
+    hh = aInH;
+
+    if( hh >= 360.0 )
+        hh = 0.0;
+
+    hh /= 60.0;
+
+    i = (long) hh;
+    ff = hh - i;
+
+    p = aInV * ( 1.0 - aInS );
+    q = aInV * ( 1.0 - ( aInS * ff ) );
+    t = aInV * ( 1.0 - ( aInS * ( 1.0 - ff ) ) );
+
+    switch( i )
+    {
+    case 0:
+        r = aInV;
+        g = t;
+        b = p;
+        break;
+
+    case 1:
+        r = q;
+        g = aInV;
+        b = p;
+        break;
+
+    case 2:
+        r = p;
+        g = aInV;
+        b = t;
+        break;
+
+    case 3:
+        r = p;
+        g = q;
+        b = aInV;
+        break;
+
+    case 4:
+        r = t;
+        g = p;
+        b = aInV;
+        break;
+
+    case 5:
+    default:
+        r = aInV;
+        g = p;
+        b = q;
+        break;
+    }
+}
+
+
+COLOR4D& COLOR4D::Saturate( double aFactor )
+{
+    double h, s, v;
+
+    ToHSV( h, s, v );
+    FromHSV( h, aFactor, 1.0 );
+
+    return *this;
+}