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Diffstat (limited to 'common/gal/color4d.cpp')
| -rw-r--r-- | common/gal/color4d.cpp | 179 |
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; +} |