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/*
* Configurable text colors
* Copyright (C) 2008 Douglas Boffey <dougaboffey@netscape.net>
* Copyright (C) 2009 The Mana World Development Team
* Copyright (C) 2009-2012 The Mana Developers
*
* This file is part of The Mana Client.
*
* 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
* 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 "palette.h"
#include <cmath>
static constexpr double PI = 3.14159265;
const gcn::Color Palette::BLACK = gcn::Color(0, 0, 0);
Timer Palette::mRainbowTimer;
Palette::Palettes Palette::mInstances;
const gcn::Color Palette::RAINBOW_COLORS[7] = {
gcn::Color(255, 0, 0),
gcn::Color(255, 153, 0),
gcn::Color(255, 255, 0),
gcn::Color(0, 153, 0),
gcn::Color(0, 204, 204),
gcn::Color(51, 0, 153),
gcn::Color(153, 0, 153)
};
/** Number of Elemets of RAINBOW_COLORS */
const int Palette::RAINBOW_COLOR_COUNT = 7;
Palette::Palette(int size) :
mColors(size)
{
mInstances.insert(this);
}
Palette::~Palette()
{
mInstances.erase(this);
}
const gcn::Color &Palette::getColor(char c, bool &valid)
{
for (const auto &color : mColors)
{
if (color.ch == c)
{
valid = true;
return color.color;
}
}
valid = false;
return BLACK;
}
void Palette::advanceGradients()
{
const int advance = mRainbowTimer.elapsed() / 5;
if (advance <= 0)
return;
mRainbowTimer.extend(advance * 5);
for (auto palette : mInstances)
palette->advanceGradient(advance);
}
void Palette::advanceGradient(int advance)
{
for (auto elem : mGradVector)
{
int delay = elem->delay;
if (elem->grad == PULSE)
delay = delay / 20;
const int numOfColors = (elem->grad == SPECTRUM ? 6 :
elem->grad == PULSE ? 127 :
RAINBOW_COLOR_COUNT);
elem->gradientIndex = (elem->gradientIndex + advance) %
(delay * numOfColors);
const int pos = elem->gradientIndex % delay;
const int colIndex = elem->gradientIndex / delay;
if (elem->grad == PULSE)
{
const int colVal = (int) (255.0 * sin(PI * colIndex / numOfColors));
const gcn::Color &col = elem->testColor;
elem->color.r = ((colVal * col.r) / 255) % (col.r + 1);
elem->color.g = ((colVal * col.g) / 255) % (col.g + 1);
elem->color.b = ((colVal * col.b) / 255) % (col.b + 1);
}
if (elem->grad == SPECTRUM)
{
int colVal;
if (colIndex % 2)
{ // falling curve
colVal = (int)(255.0 * (cos(PI * pos / delay) + 1) / 2);
}
else
{ // ascending curve
colVal = (int)(255.0 * (cos(PI * (delay - pos) / delay) +
1) / 2);
}
elem->color.r =
(colIndex == 0 || colIndex == 5) ? 255 :
(colIndex == 1 || colIndex == 4) ? colVal : 0;
elem->color.g =
(colIndex == 1 || colIndex == 2) ? 255 :
(colIndex == 0 || colIndex == 3) ? colVal : 0;
elem->color.b =
(colIndex == 3 || colIndex == 4) ? 255 :
(colIndex == 2 || colIndex == 5) ? colVal : 0;
}
else if (elem->grad == RAINBOW)
{
const gcn::Color &startCol = RAINBOW_COLORS[colIndex];
const gcn::Color &destCol =
RAINBOW_COLORS[(colIndex + 1) % numOfColors];
const double startColVal = (cos(PI * pos / delay) + 1) / 2;
const double destColVal = 1 - startColVal;
elem->color.r =(int)(startColVal * startCol.r +
destColVal * destCol.r);
elem->color.g =(int)(startColVal * startCol.g +
destColVal * destCol.g);
elem->color.b =(int)(startColVal * startCol.b +
destColVal * destCol.b);
}
}
}
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