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-rw-r--r--src/resources/dye.cpp222
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diff --git a/src/resources/dye.cpp b/src/resources/dye.cpp
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+/*
+ * 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();
+}