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Diffstat (limited to 'src/resources/dye.cpp')
| -rw-r--r-- | src/resources/dye.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/src/resources/dye.cpp b/src/resources/dye.cpp new file mode 100644 index 00000000..2ce4a48d --- /dev/null +++ b/src/resources/dye.cpp @@ -0,0 +1,222 @@ +/* + * The Mana World + * Copyright 2007 The Mana World Development Team + * + * This file is part of The Mana World. + * + * The Mana World 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 + * any later version. + * + * The Mana World 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 The Mana World; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * $Id: dye.cpp 3708 2007-11-04 11:52:44Z gmelquio $ + */ + +#include <algorithm> +#include <sstream> + +#include "dye.h" + +#include "../log.h" + +Palette::Palette(std::string const &description) +{ + int size = description.length(); + if (size == 0) return; + if (description[0] != '#') + { + // TODO: load palette from file. + return; + } + + int pos = 1; + for (;;) + { + if (pos + 6 > size) break; + int v = 0; + for (int i = 0; i < 6; ++i) + { + char c = description[pos + i]; + int n; + if ('0' <= c && c <= '9') n = c - '0'; + else if ('A' <= c && c <= 'F') n = c - 'A' + 10; + else if ('a' <= c && c <= 'f') n = c - 'a' + 10; + else goto error; + v = (v << 4) | n; + } + Color c = { { v >> 16, v >> 8, v } }; + mColors.push_back(c); + pos += 6; + if (pos == size) return; + if (description[pos] != ',') break; + ++pos; + } + + error: + logger->log("Error, invalid embedded palette: %s", description.c_str()); +} + +void Palette::getColor(int intensity, int color[3]) const +{ + if (intensity == 0) + { + color[0] = 0; + color[1] = 0; + color[2] = 0; + return; + } + + int last = mColors.size(); + if (last == 0) return; + + int i = intensity * last / 255; + int t = intensity * last % 255; + + int j = t != 0 ? i : i - 1; + // Get the exact color if any, the next color otherwise. + int r2 = mColors[j].value[0], + g2 = mColors[j].value[1], + b2 = mColors[j].value[2]; + + if (t == 0) + { + // Exact color. + color[0] = r2; + color[1] = g2; + color[2] = b2; + return; + } + + // Get the previous color. First color is implicitly black. + int r1 = 0, g1 = 0, b1 = 0; + if (i > 0) + { + r1 = mColors[i - 1].value[0]; + g1 = mColors[i - 1].value[1]; + b1 = mColors[i - 1].value[2]; + } + + // Perform a linear interpolation. + color[0] = ((255 - t) * r1 + t * r2) / 255; + color[1] = ((255 - t) * g1 + t * g2) / 255; + color[2] = ((255 - t) * b1 + t * b2) / 255; +} + +Dye::Dye(std::string const &description) +{ + for (int i = 0; i < 7; ++i) + mPalettes[i] = 0; + + if (description.empty()) return; + + std::string::size_type next_pos = 0, length = description.length(); + do + { + std::string::size_type pos = next_pos; + next_pos = description.find(';', pos); + if (next_pos == std::string::npos) + next_pos = length; + if (next_pos <= pos + 3 || description[pos + 1] != ':') + { + logger->log("Error, invalid dye: %s", description.c_str()); + return; + } + int i = 0; + switch (description[pos]) + { + case 'R': i = 0; break; + case 'G': i = 1; break; + case 'Y': i = 2; break; + case 'B': i = 3; break; + case 'M': i = 4; break; + case 'C': i = 5; break; + case 'W': i = 6; break; + default: + logger->log("Error, invalid dye: %s", description.c_str()); + return; + } + mPalettes[i] = new Palette(description.substr(pos + 2, next_pos - pos - 2)); + ++next_pos; + } + while (next_pos < length); +} + +Dye::~Dye() +{ + for (int i = 0; i < 7; ++i) + delete mPalettes[i]; +} + +void Dye::update(int color[3]) const +{ + int cmax = std::max(color[0], std::max(color[1], color[2])); + if (cmax == 0) return; + + int cmin = std::min(color[0], std::min(color[1], color[2])); + int intensity = color[0] + color[1] + color[2]; + + if (cmin != cmax && + (cmin != 0 || (intensity != cmax && intensity != 2 * cmax))) + { + // not pure + return; + } + + int i = (color[0] != 0) | ((color[1] != 0) << 1) | ((color[2] != 0) << 2); + + if (mPalettes[i - 1]) + mPalettes[i - 1]->getColor(cmax, color); +} + +void Dye::instantiate(std::string &target, std::string const &palettes) +{ + std::string::size_type next_pos = target.find('|'); + if (next_pos == std::string::npos || palettes.empty()) return; + ++next_pos; + + std::ostringstream s; + s << target.substr(0, next_pos); + std::string::size_type last_pos = target.length(), pal_pos = 0; + do + { + std::string::size_type pos = next_pos; + next_pos = target.find(';', pos); + if (next_pos == std::string::npos) next_pos = last_pos; + if (next_pos == pos + 1) + { + std::string::size_type pal_next_pos = palettes.find(';'); + s << target[pos] << ':'; + if (pal_next_pos == std::string::npos) + { + s << palettes.substr(pal_pos); + s << target.substr(next_pos); + break; + } + s << palettes.substr(pal_pos, pal_next_pos - pal_pos); + pal_pos = pal_next_pos; + } + else if (next_pos > pos + 2) + { + s << target.substr(pos, next_pos - pos); + } + else + { + logger->log("Error, invalid dye placeholder: %s", target.c_str()); + return; + } + s << target[next_pos]; + ++next_pos; + } + while (next_pos < last_pos); + + target = s.str(); +} |