X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_gradient%2Fspiralgradient.cpp;fp=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_gradient%2Fspiralgradient.cpp;h=8386c2504af4016cf2f4ae87a651441287fadae2;hb=16b3beced25134bef064705568ecb893a6be4e79;hp=0000000000000000000000000000000000000000;hpb=5a1d028f56182922addfed8f1f1c28fdde12756c;p=synfig.git diff --git a/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp b/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp new file mode 100644 index 0000000..8386c25 --- /dev/null +++ b/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp @@ -0,0 +1,241 @@ +/* === S I N F G =========================================================== */ +/*! \file spiralgradient.cpp +** \brief Template Header +** +** $Id: spiralgradient.cpp,v 1.1.1.1 2005/01/04 01:23:11 darco Exp $ +** +** \legal +** Copyright (c) 2002 Robert B. Quattlebaum Jr. +** +** This software and associated documentation +** are CONFIDENTIAL and PROPRIETARY property of +** the above-mentioned copyright holder. +** +** You may not copy, print, publish, or in any +** other way distribute this software without +** a prior written agreement with +** the copyright holder. +** \endlegal +*/ +/* ========================================================================= */ + +/* === H E A D E R S ======================================================= */ + +#ifdef USING_PCH +# include "pch.h" +#else +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "spiralgradient.h" + +#endif + +/* === U S I N G =========================================================== */ + +using namespace etl; +using namespace std; +using namespace sinfg; + +/* === G L O B A L S ======================================================= */ + +SINFG_LAYER_INIT(SpiralGradient); +SINFG_LAYER_SET_NAME(SpiralGradient,"spiral_gradient"); +SINFG_LAYER_SET_LOCAL_NAME(SpiralGradient,_("Spiral Gradient")); +SINFG_LAYER_SET_CATEGORY(SpiralGradient,_("Gradients")); +SINFG_LAYER_SET_VERSION(SpiralGradient,"0.1"); +SINFG_LAYER_SET_CVS_ID(SpiralGradient,"$Id: spiralgradient.cpp,v 1.1.1.1 2005/01/04 01:23:11 darco Exp $"); + +/* === P R O C E D U R E S ================================================= */ + +/* === M E T H O D S ======================================================= */ + +/* === E N T R Y P O I N T ================================================= */ + +SpiralGradient::SpiralGradient(): + Layer_Composite(1.0,Color::BLEND_STRAIGHT), + gradient(Color::black(),Color::white()), + center(0,0), + radius(0.5), + angle(Angle::zero()), + clockwise(false) +{ +} + +bool +SpiralGradient::set_param(const String & param, const ValueBase &value) +{ + IMPORT(gradient); + IMPORT(center); + IMPORT(radius); + IMPORT(angle); + IMPORT(clockwise); + + return Layer_Composite::set_param(param,value); +} + +ValueBase +SpiralGradient::get_param(const String ¶m)const +{ + EXPORT(gradient); + EXPORT(center); + EXPORT(radius); + EXPORT(angle); + EXPORT(clockwise); + + EXPORT_NAME(); + EXPORT_VERSION(); + + return Layer_Composite::get_param(param); +} + +Layer::Vocab +SpiralGradient::get_param_vocab()const +{ + Layer::Vocab ret(Layer_Composite::get_param_vocab()); + + ret.push_back(ParamDesc("gradient") + .set_local_name(_("Gradient")) + ); + + ret.push_back(ParamDesc("center") + .set_local_name(_("Center")) + ); + + ret.push_back(ParamDesc("radius") + .set_local_name(_("Radius")) + .set_description(_("This is the radius of the circle")) + .set_is_distance() + .set_origin("center") + ); + + ret.push_back(ParamDesc("angle") + .set_local_name(_("Angle")) + .set_origin("center") + ); + + ret.push_back(ParamDesc("clockwise") + .set_local_name(_("Clockwise")) + ); + + return ret; +} + +inline Color +SpiralGradient::color_func(const Point &pos, float supersample)const +{ + const Point centered(pos-center); + Angle a; + a=Angle::tan(-centered[1],centered[0]).mod(); + a=a+angle; + + if(supersample<0.00001)supersample=0.00001; + + Real dist((pos-center).mag()/radius); + if(clockwise) + dist+=Angle::rot(a.mod()).get(); + else + dist-=Angle::rot(a.mod()).get(); + + dist-=floor(dist); + if(dist+supersample*0.5>1.0) + { + Color pool(gradient(dist,supersample*0.5).premult_alpha()*(1.0-(dist-supersample*0.5))); + pool+=gradient((dist+supersample*0.5)-1.0,supersample*0.5).premult_alpha()*((dist+supersample*0.5)-1.0); + return pool.demult_alpha(); + } + if(dist-supersample*0.5<0.0) + { + Color pool(gradient(dist,supersample*0.5).premult_alpha()*(dist+supersample*0.5)); + pool+=gradient(1.0-(dist-supersample*0.5),supersample*0.5).premult_alpha()*(-(dist-supersample*0.5)); + return pool.demult_alpha(); + } + + return gradient(dist,supersample); +} + +float +SpiralGradient::calc_supersample(const sinfg::Point &x, float pw,float ph)const +{ + return (1.41421*pw/radius+(1.41421*pw/Point(x-center).mag())/(PI*2))*0.5; +} + +sinfg::Layer::Handle +SpiralGradient::hit_check(sinfg::Context context, const sinfg::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); +} + +Color +SpiralGradient::get_color(Context context, const Point &pos)const +{ + const Color color(color_func(pos)); + + if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT) + return color; + else + return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method()); +} + +bool +SpiralGradient::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; +}