+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file palette.cpp
-** \brief Template File
-**
-** $Id$
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**
-** This package 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 (at your option) any later version.
-**
-** This package 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.
-** \endlegal
-*/
-/* ========================================================================= */
-
-/* === H E A D E R S ======================================================= */
-
-#ifdef USING_PCH
-# include "pch.h"
-#else
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "palette.h"
-#include "surface.h"
-#include "general.h"
-#include <fstream>
-#include <iostream>
-
-#endif
-
-/* === U S I N G =========================================================== */
-
-using namespace std;
-using namespace etl;
-using namespace synfig;
-
-/* === M A C R O S ========================================================= */
-
-#define PALETTE_FILE_COOKIE "SYNFIGPAL1.0"
-
-/* === G L O B A L S ======================================================= */
-
-bool weight_less_than(const PaletteItem& lhs,const PaletteItem& rhs)
-{
- return lhs.weight<rhs.weight;
-}
-
-bool luma_less_than(const PaletteItem& lhs,const PaletteItem& rhs)
-{
- return lhs.color.get_y()<rhs.color.get_y();
-}
-
-bool luma_less_than(const PaletteItem& lhs,const float& rhs)
-{
- return lhs.color.get_y()<rhs;
-}
-
-/* === P R O C E D U R E S ================================================= */
-
-/* === M E T H O D S ======================================================= */
-
-Palette::Palette():
- name_(_("Unnamed"))
-{
-}
-
-Palette::Palette(const String& name_):
- name_(name_)
-{
-}
-
-void
-PaletteItem::add(const Color& x,int xweight)
-{
- color=(color*weight+x*xweight)/(weight+xweight);
- weight+=xweight;
-}
-
-Palette::Palette(const Surface& surface, int max_colors):
- name_(_("Surface Palette"))
-{
- max_colors-=2;
- for(int i=0;(signed)size()<(max_colors-1) && i<max_colors*16;++i) {
- int x=rand()%surface.get_w();
- int y=rand()%surface.get_h();
-
- float dist;
- Color color(surface[y][x]);
-
- if(empty())
- {
- push_back(color);
- continue;
- }
-
- if(color.get_a()==0)
- {
- if(front().color.get_a()!=0)
- insert(begin(),Color(1,0,1,0));
- front().weight+=400;
- continue;
- }
-
- iterator iter(find_closest(color,&dist));
- if(sqrt(dist)<0.005)
- {
- iter->add(color);
- continue;
- }
-
- /*if(size()>=max_colors)
- {
- iterator iterlight(find_light());
- PaletteItem light(*iterlight);
- erase(iterlight);
- find_closest(light.color)->add(light.color,light.weight);
- }
- */
-
- push_back(color);
- continue;
- }
-
-/*
-
- max_colors-=2;
- for(int y=0;y<surface.get_h();y++)
- for(int x=0;x<surface.get_w();x++)
- {
- float dist;
- Color color(surface[y][x]);
-
- if(empty())
- {
- push_back(color);
- continue;
- }
-
- if(color.get_a()==0)
- {
- if(front().color.get_a()!=0)
- insert(begin(),Color(1,0,1,0));
- front().weight+=400;
- continue;
- }
-
- iterator iter(find_closest(color,&dist));
- if(sqrt(dist)<0.005)
- {
- iter->add(color);
- continue;
- }
-
-
- push_back(color);
- continue;
- }
- sort(rbegin(),rend());
-
- iterator iter;
-
- iterator best_match(begin());
- while((signed)size()>max_colors)
- {
- PaletteItem item(back());
- pop_back();
- find_closest(item.color)->add(item.color,item.weight);
- }
-*/
- push_back(Color::black());
- push_back(Color::white());
-
-// sort(begin(),end(),&luma_less_than);
-}
-
-Palette::const_iterator
-Palette::find_closest(const Color& color, float* dist)const
-{
- // For the sake of avoiding cut-and-paste
- // bugs, we'll just use the non-const
- // find_closest()... It doesn't change anything
- // anyway.
- return const_cast<Palette*>(this)->find_closest(color,dist);
-}
-
-Palette::iterator
-Palette::find_closest(const Color& color, float* dist)
-{
- iterator iter;
-
- iterator best_match(begin());
- float best_dist(1000000);
-
- const float prep_y(powf(color.get_y(),2.2f)*color.get_a());
- const float prep_u(color.get_u());
- const float prep_v(color.get_v());
-
- for(iter=begin();iter!=end();++iter)
- {
- const float diff_y(prep_y-powf(iter->color.get_y(),2.2f)*iter->color.get_a());
- const float diff_u(prep_u-iter->color.get_u());
- const float diff_v(prep_v-iter->color.get_v());
- const float diff_a(color.get_a()-iter->color.get_a());
-
-
- const float dist(
- diff_y*diff_y*1.5f+
- diff_a*diff_a+
-
- diff_u*diff_u+
- diff_v*diff_v
-
- // cross product
- /*abs(
- prep_u*iter->color.get_u()-
- prep_v*iter->color.get_v()
- )*/
- );
- if(dist<best_dist)
- {
- best_dist=dist;
- best_match=iter;
- }
- }
- if(dist)
- *dist=best_dist;
-
- return best_match;
-}
-
-
-Palette::iterator
-Palette::find_heavy()
-{
- iterator iter;
-
- iterator best_match(begin());
-
- for(iter=begin();iter!=end();++iter)
- {
- if(iter->weight>best_match->weight)
- best_match=iter;
- }
-
- return best_match;
-}
-
-Palette::iterator
-Palette::find_light()
-{
- iterator iter;
-
- iterator best_match(begin());
-
- for(iter=begin();iter!=end();++iter)
- {
- if(iter->weight<best_match->weight)
- best_match=iter;
- }
-
- return best_match;
-}
-
-Palette
-Palette::grayscale(int steps)
-{
- Palette ret;
- for(int i=0;i<steps;i++)
- {
- float amount(i/(steps-1));
- float y(powf(amount,2.2f));
- ret.push_back(
- PaletteItem(
- Color(y,y,y),
- strprintf(_("%0.2f%% Gray"),amount)
- )
- );
- }
- return ret;
-}
-
-void
-Palette::save_to_file(const synfig::String& filename)const
-{
- const_iterator iter;
-
- std::ofstream file(filename.c_str());
-
- if(!file)
- throw strprintf(_("Unable to open %s for write"),filename.c_str());
-
- file<<PALETTE_FILE_COOKIE<<endl;
- file<<name_<<endl;
- for(iter=begin();iter!=end();++iter)
- {
- file<<iter->name<<endl;
- file
- <<iter->color.get_r()<<endl
- <<iter->color.get_g()<<endl
- <<iter->color.get_b()<<endl
- <<iter->color.get_a()<<endl;
-
- }
-}
-
-Palette
-Palette::load_from_file(const synfig::String& filename)
-{
- std::ifstream file(filename.c_str());
-
- if(!file)
- throw strprintf(_("Unable to open %s for read"),filename.c_str());
-
- Palette ret;
- String line;
-
- getline(file,line);
-
- if(line!=PALETTE_FILE_COOKIE)
- throw strprintf(_("%s does not appear to be a palette file"),filename.c_str());
-
- getline(file,ret.name_);
-
- while(!file.eof())
- {
- PaletteItem item;
- getline(file,item.name);
- if(!file.eof())break;
-
- getline(file,line);
- if(!file.eof())break;
- item.color.set_r(atof(line.c_str()));
-
- getline(file,line);
- if(!file.eof())break;
- item.color.set_g(atof(line.c_str()));
-
- getline(file,line);
- if(!file.eof())break;
- item.color.set_b(atof(line.c_str()));
-
- getline(file,line);
- if(!file.eof())break;
- item.color.set_a(atof(line.c_str()));
-
- ret.push_back(item);
- }
-
- return ret;
-}
projects / synfig.git / blobdiff