X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_06%2Fsrc%2Fmodules%2Fmod_gradient%2Flineargradient.cpp;fp=synfig-core%2Ftags%2Fsynfig_0_61_06%2Fsrc%2Fmodules%2Fmod_gradient%2Flineargradient.cpp;h=f8bf419b074953b0ee8800348ac8805942c7d0b6;hb=9f067badc4463e2ad6363dfe9b8c4fc28b0ec503;hp=0000000000000000000000000000000000000000;hpb=34168bb24164074ff22eb5bc47a612a738901e0a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_06/src/modules/mod_gradient/lineargradient.cpp b/synfig-core/tags/synfig_0_61_06/src/modules/mod_gradient/lineargradient.cpp new file mode 100644 index 0000000..f8bf419 --- /dev/null +++ b/synfig-core/tags/synfig_0_61_06/src/modules/mod_gradient/lineargradient.cpp @@ -0,0 +1,259 @@ +/* === S Y N F I G ========================================================= */ +/*! \file lineargradient.cpp +** \brief Template Header +** +** $Id$ +** +** \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 +** +** === N O T E S =========================================================== +** +** ========================================================================= */ + +/* === H E A D E R S ======================================================= */ + +#ifdef USING_PCH +# include "pch.h" +#else +#ifdef HAVE_CONFIG_H +# include +#endif + +#include "lineargradient.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#endif + +/* === M A C R O S ========================================================= */ + +/* === G L O B A L S ======================================================= */ + +SYNFIG_LAYER_INIT(LinearGradient); +SYNFIG_LAYER_SET_NAME(LinearGradient,"linear_gradient"); +SYNFIG_LAYER_SET_LOCAL_NAME(LinearGradient,_("Linear Gradient")); +SYNFIG_LAYER_SET_CATEGORY(LinearGradient,_("Gradients")); +SYNFIG_LAYER_SET_VERSION(LinearGradient,"0.0"); +SYNFIG_LAYER_SET_CVS_ID(LinearGradient,"$Id$"); + +/* === P R O C E D U R E S ================================================= */ + +/* === M E T H O D S ======================================================= */ + +inline void +LinearGradient::sync() +{ + diff=(p2-p1); + const Real mag(diff.inv_mag()); + diff*=mag*mag; +} + + +LinearGradient::LinearGradient(): + p1(1,1), + p2(-1,-1), + gradient(Color::black(), Color::white()), + loop(false), + zigzag(false) +{ + sync(); +} + +inline Color +LinearGradient::color_func(const Point &point, float supersample)const +{ + Real dist(point*diff-p1*diff); + + if(loop) + dist-=floor(dist); + + if(zigzag) + { + dist*=2.0; + supersample*=2.0; + if(dist>1)dist=2.0-dist; + } + + if(loop) + { + if(dist+supersample*0.5>1.0) + { + float left(supersample*0.5-(dist-1.0)); + float right(supersample*0.5+(dist-1.0)); + Color pool(gradient(1.0-(left*0.5),left).premult_alpha()*left/supersample); + if (zigzag) pool+=gradient(1.0-right*0.5,right).premult_alpha()*right/supersample; + else pool+=gradient(right*0.5,right).premult_alpha()*right/supersample; + return pool.demult_alpha(); + } + if(dist-supersample*0.5<0.0) + { + float left(supersample*0.5-dist); + float right(supersample*0.5+dist); + Color pool(gradient(right*0.5,right).premult_alpha()*right/supersample); + if (zigzag) pool+=gradient(left*0.5,left).premult_alpha()*left/supersample; + else pool+=gradient(1.0-left*0.5,left).premult_alpha()*left/supersample; + return pool.demult_alpha(); + } + } + return gradient(dist,supersample); +} + +float +LinearGradient::calc_supersample(const synfig::Point &x, float pw,float ph)const +{ + return pw/(p2-p1).mag(); +} + +synfig::Layer::Handle +LinearGradient::hit_check(synfig::Context context, const synfig::Point &point)const +{ + if(get_blend_method()==Color::BLEND_STRAIGHT && get_amount()>=0.5) + return const_cast(this); + if(get_amount()==0.0) + return context.hit_check(point); + if((get_blend_method()==Color::BLEND_STRAIGHT || get_blend_method()==Color::BLEND_COMPOSITE) && color_func(point).get_a()>0.5) + return const_cast(this); + return context.hit_check(point); +} + +bool +LinearGradient::set_param(const String & param, const ValueBase &value) +{ + if(param=="p1" && value.same_as(p1)) + { + p1=value.get(p1); + sync(); + return true; + } + if(param=="p2" && value.same_as(p2)) + { + p2=value.get(p2); + sync(); + return true; + } + //IMPORT(p1); + //IMPORT(p2); + + + IMPORT(gradient); + IMPORT(loop); + IMPORT(zigzag); + return Layer_Composite::set_param(param,value); +} + +ValueBase +LinearGradient::get_param(const String & param)const +{ + EXPORT(p1); + EXPORT(p2); + EXPORT(gradient); + EXPORT(loop); + EXPORT(zigzag); + + EXPORT_NAME(); + EXPORT_VERSION(); + + return Layer_Composite::get_param(param); +} + +Layer::Vocab +LinearGradient::get_param_vocab()const +{ + Layer::Vocab ret(Layer_Composite::get_param_vocab()); + + ret.push_back(ParamDesc("p1") + .set_local_name(_("Point 1")) + .set_connect("p2") + ); + ret.push_back(ParamDesc("p2") + .set_local_name(_("Point 2")) + ); + ret.push_back(ParamDesc("gradient") + .set_local_name(_("Gradient")) + ); + ret.push_back(ParamDesc("loop") + .set_local_name(_("Loop")) + ); + ret.push_back(ParamDesc("zigzag") + .set_local_name(_("ZigZag")) + ); + + return ret; +} + +Color +LinearGradient::get_color(Context context, const Point &point)const +{ + const Color color(color_func(point)); + + if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT) + return color; + else + return Color::blend(color,context.get_color(point),get_amount(),get_blend_method()); +} + +bool +LinearGradient::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const +{ + SuperCallback supercb(cb,0,9500,10000); + + if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT) + { + surface->set_wh(renddesc.get_w(),renddesc.get_h()); + } + else + { + if(!context.accelerated_render(surface,quality,renddesc,&supercb)) + return false; + if(get_amount()==0) + return true; + } + + + int x,y; + + Surface::pen pen(surface->begin()); + const Real pw(renddesc.get_pw()),ph(renddesc.get_ph()); + Point pos; + Point tl(renddesc.get_tl()); + const int w(surface->get_w()); + const int h(surface->get_h()); + + if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT) + { + for(y=0,pos[1]=tl[1];yamount_complete(10000,10000)) + return false; + + return true; +}