280 lines
18 KiB
C++
280 lines
18 KiB
C++
// color.cpp
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//
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// Copyright (C) 2001-2008, the Celestia Development Team
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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#include "color.h"
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#include <celmath/mathlib.h>
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using namespace std;
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using namespace celmath;
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Color::ColorMap Color::x11Colors;
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const Color Color::White = Color(1.0f, 1.0f, 1.0f);
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const Color Color::Black = Color(0.0f,0.0f, 0.0f);
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Color::Color()
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{
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c[Red] = c[Green] = c[Blue] = 0;
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c[Alpha] = 0xff;
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}
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Color::Color(float r, float g, float b)
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{
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c[Red] = (unsigned char) (clamp(r) * 255.99f);
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c[Green] = (unsigned char) (clamp(g) * 255.99f);
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c[Blue] = (unsigned char) (clamp(b) * 255.99f);
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c[Alpha] = 0xff;
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}
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Color::Color(float r, float g, float b, float a)
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{
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c[Red] = (unsigned char) (clamp(r) * 255.99f);
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c[Green] = (unsigned char) (clamp(g) * 255.99f);
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c[Blue] = (unsigned char) (clamp(b) * 255.99f);
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c[Alpha] = (unsigned char) (clamp(a) * 255.99f);
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}
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Color::Color(unsigned char r, unsigned char g, unsigned char b) :
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Color(r, g, b, 0xff)
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{
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}
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Color::Color(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
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{
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c[Red] = r;
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c[Green] = g;
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c[Blue] = b;
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c[Alpha] = a;
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}
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Color::Color(const Eigen::Vector3f &c) :
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Color(c.x(), c.y(), c.z())
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{
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}
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Color::Color(const Eigen::Vector4f &c) :
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Color(c.x(), c.y(), c.z(), c.w())
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{
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}
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Color::Color(const Color& color, float alpha)
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{
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*this = color;
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c[Alpha] = (unsigned char) (clamp(alpha) * 255.99f);
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}
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/*! Parse a color string and return true if it was a valid color, otherwise
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* false. Accetable inputs are HTML/X11 style #xxxxxx colors (where x is
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* hexadecimal digit) or one of a list of named colors.
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*/
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bool Color::parse(const char* s, Color& c)
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{
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// Initialize the color dictionary if this is the first
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// time Color::parse has been called.
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if (x11Colors.empty())
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{
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buildX11ColorMap();
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}
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if (s[0] == '#')
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{
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s++;
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int length = strlen(s);
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// Verify that the string contains only hex digits
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for (int i = 0; i < length; i++)
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{
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if (isxdigit(s[i]) == 0)
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return false;
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}
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unsigned int n;
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sscanf(s, "%x", &n);
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switch(length)
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{
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case 3:
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c = Color((unsigned char) ((n >> 8) * 17),
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(unsigned char) (((n & 0x0f0) >> 4) * 17),
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(unsigned char) ((n & 0x00f) * 17));
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return true;
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case 6:
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c = Color((unsigned char) (n >> 16),
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(unsigned char) ((n & 0x00ff00) >> 8),
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(unsigned char) (n & 0x0000ff));
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return true;
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default:
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return false;
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}
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}
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else
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{
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if (x11Colors.find(s) != x11Colors.end())
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{
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c = x11Colors.find(s)->second;
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return true;
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}
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return false;
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}
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}
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// X11 Colors STL map
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void Color::buildX11ColorMap()
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{
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x11Colors["aliceblue"] = Color((unsigned char)240, (unsigned char)248, (unsigned char)255);
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x11Colors["antiquewhite"] = Color((unsigned char)250, (unsigned char)235, (unsigned char)215);
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x11Colors["aqua"] = Color((unsigned char)0, (unsigned char)255, (unsigned char)255);
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x11Colors["aquamarine"] = Color((unsigned char)127, (unsigned char)255, (unsigned char)212);
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x11Colors["azure"] = Color((unsigned char)240, (unsigned char)255, (unsigned char)255);
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x11Colors["beige"] = Color((unsigned char)245, (unsigned char)245, (unsigned char)220);
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x11Colors["bisque"] = Color((unsigned char)255, (unsigned char)228, (unsigned char)196);
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x11Colors["black"] = Color((unsigned char)0, (unsigned char)0, (unsigned char)0);
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x11Colors["blanchedalmond"] = Color((unsigned char)255, (unsigned char)235, (unsigned char)205);
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x11Colors["blue"] = Color((unsigned char)0, (unsigned char)0, (unsigned char)255);
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x11Colors["blueviolet"] = Color((unsigned char)138, (unsigned char)43, (unsigned char)226);
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x11Colors["brown"] = Color((unsigned char)165, (unsigned char)42, (unsigned char)42);
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x11Colors["burlywood"] = Color((unsigned char)222, (unsigned char)184, (unsigned char)135);
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x11Colors["cadetblue"] = Color((unsigned char)95, (unsigned char)158, (unsigned char)160);
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x11Colors["chartreuse"] = Color((unsigned char)127, (unsigned char)255, (unsigned char)0);
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x11Colors["chocolate"] = Color((unsigned char)210, (unsigned char)105, (unsigned char)30);
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x11Colors["coral"] = Color((unsigned char)255, (unsigned char)127, (unsigned char)80);
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x11Colors["cornflowerblue"] = Color((unsigned char)100, (unsigned char)149, (unsigned char)237);
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x11Colors["cornsilk"] = Color((unsigned char)255, (unsigned char)248, (unsigned char)220);
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x11Colors["crimson"] = Color((unsigned char)220, (unsigned char)20, (unsigned char)60);
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x11Colors["cyan"] = Color((unsigned char)0, (unsigned char)255, (unsigned char)255);
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x11Colors["darkblue"] = Color((unsigned char)0, (unsigned char)0, (unsigned char)139);
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x11Colors["darkcyan"] = Color((unsigned char)0, (unsigned char)139, (unsigned char)139);
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x11Colors["darkgoldenrod"] = Color((unsigned char)184, (unsigned char)134, (unsigned char)11);
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x11Colors["darkgray"] = Color((unsigned char)169, (unsigned char)169, (unsigned char)169);
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x11Colors["darkgreen"] = Color((unsigned char)0, (unsigned char)100, (unsigned char)0);
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x11Colors["darkkhaki"] = Color((unsigned char)189, (unsigned char)183, (unsigned char)107);
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x11Colors["darkmagenta"] = Color((unsigned char)139, (unsigned char)0, (unsigned char)139);
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x11Colors["darkolivegreen"] = Color((unsigned char)85, (unsigned char)107, (unsigned char)47);
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x11Colors["darkorange"] = Color((unsigned char)255, (unsigned char)140, (unsigned char)0);
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x11Colors["darkorchid"] = Color((unsigned char)153, (unsigned char)50, (unsigned char)204);
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x11Colors["darkred"] = Color((unsigned char)139, (unsigned char)0, (unsigned char)0);
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x11Colors["darksalmon"] = Color((unsigned char)233, (unsigned char)150, (unsigned char)122);
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x11Colors["darkseagreen"] = Color((unsigned char)143, (unsigned char)188, (unsigned char)143);
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x11Colors["darkslateblue"] = Color((unsigned char)72, (unsigned char)61, (unsigned char)139);
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x11Colors["darkslategray"] = Color((unsigned char)47, (unsigned char)79, (unsigned char)79);
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x11Colors["darkturquoise"] = Color((unsigned char)0, (unsigned char)206, (unsigned char)209);
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x11Colors["darkviolet"] = Color((unsigned char)148, (unsigned char)0, (unsigned char)211);
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x11Colors["deeppink"] = Color((unsigned char)255, (unsigned char)20, (unsigned char)147);
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x11Colors["deepskyblue"] = Color((unsigned char)0, (unsigned char)191, (unsigned char)255);
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x11Colors["dimgray"] = Color((unsigned char)105, (unsigned char)105, (unsigned char)105);
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x11Colors["dodgerblue"] = Color((unsigned char)30, (unsigned char)144, (unsigned char)255);
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x11Colors["firebrick"] = Color((unsigned char)178, (unsigned char)34, (unsigned char)34);
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x11Colors["floralwhite"] = Color((unsigned char)255, (unsigned char)250, (unsigned char)240);
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x11Colors["forestgreen"] = Color((unsigned char)34, (unsigned char)139, (unsigned char)34);
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x11Colors["fuchsia"] = Color((unsigned char)255, (unsigned char)0, (unsigned char)255);
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x11Colors["gainsboro"] = Color((unsigned char)220, (unsigned char)220, (unsigned char)220);
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x11Colors["ghostwhite"] = Color((unsigned char)248, (unsigned char)248, (unsigned char)255);
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x11Colors["gold"] = Color((unsigned char)255, (unsigned char)215, (unsigned char)0);
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x11Colors["goldenrod"] = Color((unsigned char)218, (unsigned char)165, (unsigned char)32);
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x11Colors["gray"] = Color((unsigned char)128, (unsigned char)128, (unsigned char)128);
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x11Colors["green"] = Color((unsigned char)0, (unsigned char)128, (unsigned char)0);
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x11Colors["greenyellow"] = Color((unsigned char)173, (unsigned char)255, (unsigned char)47);
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x11Colors["honeydew"] = Color((unsigned char)240, (unsigned char)255, (unsigned char)240);
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x11Colors["hotpink"] = Color((unsigned char)255, (unsigned char)105, (unsigned char)180);
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x11Colors["indianred"] = Color((unsigned char)205, (unsigned char)92, (unsigned char)92);
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x11Colors["indigo"] = Color((unsigned char)75, (unsigned char)0, (unsigned char)130);
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x11Colors["ivory"] = Color((unsigned char)255, (unsigned char)255, (unsigned char)240);
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x11Colors["khaki"] = Color((unsigned char)240, (unsigned char)230, (unsigned char)140);
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x11Colors["lavender"] = Color((unsigned char)230, (unsigned char)230, (unsigned char)250);
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x11Colors["lavenderblush"] = Color((unsigned char)255, (unsigned char)240, (unsigned char)245 );
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x11Colors["lawngreen"] = Color((unsigned char)124, (unsigned char)252, (unsigned char)0);
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x11Colors["lemonchiffon"] = Color((unsigned char)255, (unsigned char)250, (unsigned char)205);
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x11Colors["lightblue"] = Color((unsigned char)173, (unsigned char)216, (unsigned char)230);
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x11Colors["lightcoral"] = Color((unsigned char)240, (unsigned char)128, (unsigned char)128);
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x11Colors["lightcyan"] = Color((unsigned char)224, (unsigned char)255, (unsigned char)255);
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x11Colors["lightgoldenrodyellow"] = Color((unsigned char)250, (unsigned char)250, (unsigned char)210);
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x11Colors["lightgreen"] = Color((unsigned char)144, (unsigned char)238, (unsigned char)144);
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x11Colors["lightgrey"] = Color((unsigned char)211, (unsigned char)211, (unsigned char)211);
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x11Colors["lightpink"] = Color((unsigned char)255, (unsigned char)182, (unsigned char)193);
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x11Colors["lightsalmon"] = Color((unsigned char)255, (unsigned char)160, (unsigned char)122);
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x11Colors["lightseagreen"] = Color((unsigned char)32, (unsigned char)178, (unsigned char)170);
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x11Colors["lightskyblue"] = Color((unsigned char)135, (unsigned char)206, (unsigned char)250);
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x11Colors["lightslategray"] = Color((unsigned char)119, (unsigned char)136, (unsigned char)153);
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x11Colors["lightsteelblue"] = Color((unsigned char)176, (unsigned char)196, (unsigned char)222);
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x11Colors["lightyellow"] = Color((unsigned char)255, (unsigned char)255, (unsigned char)224);
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x11Colors["lime"] = Color((unsigned char)0, (unsigned char)255, (unsigned char)0);
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x11Colors["limegreen"] = Color((unsigned char)50, (unsigned char)205, (unsigned char)50);
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x11Colors["linen"] = Color((unsigned char)250, (unsigned char)240, (unsigned char)230);
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x11Colors["magenta"] = Color((unsigned char)255, (unsigned char)0, (unsigned char)255);
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x11Colors["maroon"] = Color((unsigned char)128, (unsigned char)0, (unsigned char)0);
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x11Colors["mediumaquamarine"] = Color((unsigned char)102, (unsigned char)205, (unsigned char)170);
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x11Colors["mediumblue"] = Color((unsigned char)0, (unsigned char)0, (unsigned char)205);
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x11Colors["mediumorchid"] = Color((unsigned char)186, (unsigned char)85, (unsigned char)211);
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x11Colors["mediumpurple"] = Color((unsigned char)147, (unsigned char)112, (unsigned char)219);
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x11Colors["mediumseagreen"] = Color((unsigned char)60, (unsigned char)179, (unsigned char)113);
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x11Colors["mediumslateblue"] = Color((unsigned char)123, (unsigned char)104, (unsigned char)238);
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x11Colors["mediumspringgreen"] = Color((unsigned char)0, (unsigned char)250, (unsigned char)154);
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x11Colors["mediumturquoise"] = Color((unsigned char)72, (unsigned char)209, (unsigned char)204);
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x11Colors["mediumvioletred"] = Color((unsigned char)199, (unsigned char)21, (unsigned char)133);
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x11Colors["midnightblue"] = Color((unsigned char)25, (unsigned char)25, (unsigned char)112);
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x11Colors["mintcream"] = Color((unsigned char)245, (unsigned char)255, (unsigned char)250);
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x11Colors["mistyrose"] = Color((unsigned char)255, (unsigned char)228, (unsigned char)225);
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x11Colors["moccasin"] = Color((unsigned char)255, (unsigned char)228, (unsigned char)181);
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x11Colors["navajowhite"] = Color((unsigned char)255, (unsigned char)222, (unsigned char)173);
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x11Colors["navy"] = Color((unsigned char)0, (unsigned char)0, (unsigned char)128);
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x11Colors["oldlace"] = Color((unsigned char)253, (unsigned char)245, (unsigned char)230);
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x11Colors["olive"] = Color((unsigned char)128, (unsigned char)128, (unsigned char)0);
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x11Colors["olivedrab"] = Color((unsigned char)107, (unsigned char)142, (unsigned char)35);
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x11Colors["orange"] = Color((unsigned char)255, (unsigned char)165, (unsigned char)0);
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x11Colors["orangered"] = Color((unsigned char)255, (unsigned char)69, (unsigned char)0);
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x11Colors["orchid"] = Color((unsigned char)218, (unsigned char)112, (unsigned char)214);
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x11Colors["palegoldenrod"] = Color((unsigned char)238, (unsigned char)232, (unsigned char)170);
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x11Colors["palegreen"] = Color((unsigned char)152, (unsigned char)251, (unsigned char)152);
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x11Colors["paleturquoise"] = Color((unsigned char)175, (unsigned char)238, (unsigned char)238);
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x11Colors["palevioletred"] = Color((unsigned char)219, (unsigned char)112, (unsigned char)147);
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x11Colors["papayawhip"] = Color((unsigned char)255, (unsigned char)239, (unsigned char)213);
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x11Colors["peachpuff"] = Color((unsigned char)255, (unsigned char)218, (unsigned char)185);
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x11Colors["peru"] = Color((unsigned char)205, (unsigned char)133, (unsigned char)63);
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x11Colors["pink"] = Color((unsigned char)255, (unsigned char)192, (unsigned char)203);
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x11Colors["plum"] = Color((unsigned char)221, (unsigned char)160, (unsigned char)221);
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x11Colors["powderblue"] = Color((unsigned char)176, (unsigned char)224, (unsigned char)230);
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x11Colors["purple"] = Color((unsigned char)128, (unsigned char)0, (unsigned char)128);
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x11Colors["red"] = Color((unsigned char)255, (unsigned char)0, (unsigned char)0);
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x11Colors["rosybrown"] = Color((unsigned char)188, (unsigned char)143, (unsigned char)143);
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x11Colors["royalblue"] = Color((unsigned char)65, (unsigned char)105, (unsigned char)225);
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x11Colors["saddlebrown"] = Color((unsigned char)139, (unsigned char)69, (unsigned char)19);
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x11Colors["salmon"] = Color((unsigned char)250, (unsigned char)128, (unsigned char)114);
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x11Colors["sandybrown"] = Color((unsigned char)244, (unsigned char)164, (unsigned char)96);
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x11Colors["seagreen"] = Color((unsigned char)46, (unsigned char)139, (unsigned char)87);
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x11Colors["seashell"] = Color((unsigned char)255, (unsigned char)245, (unsigned char)238);
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x11Colors["sienna"] = Color((unsigned char)160, (unsigned char)82, (unsigned char)45);
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x11Colors["silver"] = Color((unsigned char)192, (unsigned char)192, (unsigned char)192);
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x11Colors["skyblue"] = Color((unsigned char)135, (unsigned char)206, (unsigned char)235);
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x11Colors["slateblue"] = Color((unsigned char)106, (unsigned char)90, (unsigned char)205);
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x11Colors["slategray"] = Color((unsigned char)112, (unsigned char)128, (unsigned char)144);
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x11Colors["snow"] = Color((unsigned char)255, (unsigned char)250, (unsigned char)250);
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x11Colors["springgreen"] = Color((unsigned char)0, (unsigned char)255, (unsigned char)127);
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x11Colors["steelblue"] = Color((unsigned char)70, (unsigned char)130, (unsigned char)180);
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x11Colors["tan"] = Color((unsigned char)210, (unsigned char)180, (unsigned char)140);
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x11Colors["teal"] = Color((unsigned char)0, (unsigned char)128, (unsigned char)128);
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x11Colors["thistle"] = Color((unsigned char)216, (unsigned char)191, (unsigned char)216);
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x11Colors["tomato"] = Color((unsigned char)255, (unsigned char)99, (unsigned char)71);
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x11Colors["turquoise"] = Color((unsigned char)64, (unsigned char)224, (unsigned char)208);
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x11Colors["violet"] = Color((unsigned char)238, (unsigned char)130, (unsigned char)238);
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x11Colors["wheat"] = Color((unsigned char)245, (unsigned char)222, (unsigned char)179);
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x11Colors["white"] = Color((unsigned char)255, (unsigned char)255, (unsigned char)255);
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x11Colors["whitesmoke"] = Color((unsigned char)245, (unsigned char)245, (unsigned char)245);
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x11Colors["yellow"] = Color((unsigned char)255, (unsigned char)255, (unsigned char)0);
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x11Colors["yellowgreen"] = Color((unsigned char)154, (unsigned char)205, (unsigned char)50);
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}
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