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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.0.3/src/Color.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.0.3/src/Color.cpp | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.0.3/src/Color.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.0.3/src/Color.cpp deleted file mode 100644 index 4f96c803172..00000000000 --- a/Build/source/texk/dvisvgm/dvisvgm-1.0.3/src/Color.cpp +++ /dev/null @@ -1,126 +0,0 @@ -/************************************************************************* -** Color.cpp ** -** ** -** This file is part of dvisvgm -- the DVI to SVG converter ** -** Copyright (C) 2005-2010 Martin Gieseking <martin.gieseking@uos.de> ** -** ** -** 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 3 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, see <http://www.gnu.org/licenses/>. ** -*************************************************************************/ - -#include <cmath> -#include <iomanip> -#include <sstream> -#include "Color.h" - -using namespace std; - - - -const Color Color::BLACK(0); -const Color Color::WHITE(UInt8(255), UInt8(255), UInt8(255)); - - -static inline UInt8 float_to_byte (float v) { - return (UInt8) (floor(255*v+0.5)); -} - - -void Color::set (float r, float g, float b) { - set(float_to_byte(r), float_to_byte(g), float_to_byte(b)); -} - - -void Color::setHSB (float h, float s, float b) { - vector<float> hsb(3), rgb(3); - hsb[0] = h; - hsb[1] = s; - hsb[2] = b; - HSB2RGB(hsb, rgb); - set(rgb[0], rgb[1], rgb[2]); -} - - -void Color::setCMYK (float c, float m, float y, float k) { - vector<float> cmyk(4), rgb(3); - cmyk[0] = c; - cmyk[1] = m; - cmyk[2] = y; - cmyk[3] = k; - CMYK2RGB(cmyk, rgb); - set(rgb[0], rgb[1], rgb[2]); -} - - -void Color::operator *= (double c) { - UInt32 rgb=0; - for (int i=0; i < 3; i++) { - rgb |= UInt32(floor((_rgb & 0xff)*c+0.5)) << (8*i); - _rgb >>= 8; - } - _rgb = rgb; -} - - -string Color::rgbString () const { - ostringstream oss; - oss << '#'; - for (int i=2; i >= 0; i--) { - oss << setbase(16) << setfill('0') << setw(2) - << (((_rgb >> (8*i)) & 0xff)); - } - return oss.str(); -} - - -/** Approximates a CMYK color by an RGB triple. The component values - * are expected to be normalized, i.e. 0 <= cmyk[i],rgb[j] <= 1. - * @param[in] cmyk color in CMYK space - * @param[out] rgb RGB approximation */ -void Color::CMYK2RGB (const vector<float> &cmyk, vector<float> &rgb) { - for (int i=0; i < 3; i++) - rgb[i] = 1.0f-min(1.0f, cmyk[i]+cmyk[3]); -} - - -/** Converts a color given in HSB coordinates to RGB. - * @param[in] hsb color in HSB space - * @param[out] rgb color in RGB space */ -void Color::HSB2RGB (const vector<float> &hsb, vector<float> &rgb) { - if (hsb[1] == 0) - rgb[0] = rgb[1] = rgb[2] = hsb[2]; - else { - float h = hsb[0]-floor(hsb[0]); - int i = int(6*h); - float f = float(6.0*h-i); - float p = hsb[2]*(1-hsb[1]); - float q = hsb[2]*(1-hsb[1]*f); - float t = hsb[2]*(1-hsb[1]*(1-f)); - switch (i) { - case 0 : rgb[0]=hsb[2]; rgb[1]=t; rgb[2]=p; break; - case 1 : rgb[0]=q; rgb[1]=hsb[2]; rgb[2]=p; break; - case 2 : rgb[0]=p; rgb[1]=hsb[2]; rgb[2]=t; break; - case 3 : rgb[0]=p; rgb[1]=q; rgb[2]=hsb[2]; break; - case 4 : rgb[0]=t; rgb[1]=p; rgb[2]=hsb[2]; break; - case 5 : rgb[0]=hsb[2]; rgb[1]=p; rgb[2]=q; break; - default: ; // prevent compiler warning - } - } -} - - -void Color::getRGB (float &r, float &g, float &b) const { - r = float(((_rgb >> 16) & 255) / 255.0); - g = float(((_rgb >> 8) & 255) / 255.0); - b = float((_rgb & 255) / 255.0); -} |