--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file blur.cpp
+** \brief Template Header
+**
+** $Id: blur.cpp,v 1.2 2005/01/24 03:08:17 darco Exp $
+**
+** \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 "blur.h"
+
+#include <synfig/string.h>
+#include <synfig/time.h>
+#include <synfig/context.h>
+#include <synfig/paramdesc.h>
+#include <synfig/renddesc.h>
+#include <synfig/surface.h>
+#include <synfig/value.h>
+#include <synfig/valuenode.h>
+#include <synfig/segment.h>
+
+#include <cstring>
+#include <ETL/pen>
+
+#endif
+
+using namespace synfig;
+using namespace etl;
+using namespace std;
+
+/*#define TYPE_BOX 0
+#define TYPE_FASTGUASSIAN 1
+#define TYPE_FASTGAUSSIAN 1
+#define TYPE_CROSS 2
+#define TYPE_GUASSIAN 3
+#define TYPE_GAUSSIAN 3
+#define TYPE_DISC 4
+*/
+
+/* -- G L O B A L S --------------------------------------------------------- */
+
+SYNFIG_LAYER_INIT(Blur_Layer);
+SYNFIG_LAYER_SET_NAME(Blur_Layer,"blur");
+SYNFIG_LAYER_SET_LOCAL_NAME(Blur_Layer,_("Blur"));
+SYNFIG_LAYER_SET_CATEGORY(Blur_Layer,_("Blurs"));
+SYNFIG_LAYER_SET_VERSION(Blur_Layer,"0.2");
+SYNFIG_LAYER_SET_CVS_ID(Blur_Layer,"$Id: blur.cpp,v 1.2 2005/01/24 03:08:17 darco Exp $");
+
+/* -- F U N C T I O N S ----------------------------------------------------- */
+
+inline void clamp(synfig::Vector &v)
+{
+ if(v[0]<0.0)v[0]=0.0;
+ if(v[1]<0.0)v[1]=0.0;
+}
+
+Blur_Layer::Blur_Layer():
+ Layer_Composite (1.0,Color::BLEND_STRAIGHT),
+ size(0.1,0.1),
+ type(Blur::FASTGAUSSIAN)
+{
+}
+
+bool
+Blur_Layer::set_param(const String ¶m, const ValueBase &value)
+{
+ IMPORT_PLUS(size,clamp(size));
+ IMPORT(type);
+
+ return Layer_Composite::set_param(param,value);
+}
+
+ValueBase
+Blur_Layer::get_param(const String ¶m)const
+{
+ EXPORT(size);
+ EXPORT(type);
+
+ EXPORT_NAME();
+ EXPORT_VERSION();
+
+ return Layer_Composite::get_param(param);
+}
+
+Color
+Blur_Layer::get_color(Context context, const Point &pos)const
+{
+ Point blurpos = Blur(size,type)(pos);
+
+ if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
+ return context.get_color(blurpos);
+
+ if(get_amount()==0.0)
+ return context.get_color(pos);
+
+ return Color::blend(context.get_color(blurpos),context.get_color(pos),get_amount(),get_blend_method());
+}
+
+bool
+Blur_Layer::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
+{
+ int x,y;
+ SuperCallback stageone(cb,0,5000,10000);
+ SuperCallback stagetwo(cb,5000,10000,10000);
+
+ const int w = renddesc.get_w(),
+ h = renddesc.get_h();
+ const Real pw = renddesc.get_pw(),
+ ph = renddesc.get_ph();
+
+ RendDesc workdesc(renddesc);
+ Surface worksurface,blurred;
+
+ //callbacks depend on how long the blur takes
+ if(size[0] || size[1])
+ {
+ if(type == Blur::DISC)
+ {
+ stageone = SuperCallback(cb,0,5000,10000);
+ stagetwo = SuperCallback(cb,5000,10000,10000);
+ }
+ else
+ {
+ stageone = SuperCallback(cb,0,9000,10000);
+ stagetwo = SuperCallback(cb,9000,10000,10000);
+ }
+ }
+ else
+ {
+ stageone = SuperCallback(cb,0,9999,10000);
+ stagetwo = SuperCallback(cb,9999,10000,10000);
+ }
+
+ //expand the working surface to accommodate the blur
+
+ //the expanded size = 1/2 the size in each direction rounded up
+ int halfsizex = (int) (abs(size[0]*.5/pw) + 3),
+ halfsizey = (int) (abs(size[1]*.5/ph) + 3);
+
+ //expand by 1/2 size in each direction on either side
+ switch(type)
+ {
+ case Blur::DISC:
+ case Blur::BOX:
+ case Blur::CROSS:
+ {
+ workdesc.set_subwindow(-max(1,halfsizex),-max(1,halfsizey),w+2*max(1,halfsizex),h+2*max(1,halfsizey));
+ break;
+ }
+ case Blur::FASTGAUSSIAN:
+ {
+ if(quality < 4)
+ {
+ halfsizex*=2;
+ halfsizey*=2;
+ }
+ workdesc.set_subwindow(-max(1,halfsizex),-max(1,halfsizey),w+2*max(1,halfsizex),h+2*max(1,halfsizey));
+ break;
+ }
+ case Blur::GAUSSIAN:
+ {
+ #define GAUSSIAN_ADJUSTMENT (0.05)
+ Real pw = (Real)workdesc.get_w()/(workdesc.get_br()[0]-workdesc.get_tl()[0]);
+ Real ph = (Real)workdesc.get_h()/(workdesc.get_br()[1]-workdesc.get_tl()[1]);
+
+ pw=pw*pw;
+ ph=ph*ph;
+
+ halfsizex = (int)(abs(pw)*size[0]*GAUSSIAN_ADJUSTMENT+0.5);
+ halfsizey = (int)(abs(ph)*size[1]*GAUSSIAN_ADJUSTMENT+0.5);
+
+ halfsizex = (halfsizex + 1)/2;
+ halfsizey = (halfsizey + 1)/2;
+ workdesc.set_subwindow( -halfsizex, -halfsizey, w+2*halfsizex, h+2*halfsizey );
+
+ break;
+ }
+ }
+
+ //render the background onto the expanded surface
+ if(!context.accelerated_render(&worksurface,quality,workdesc,&stageone))
+ return false;
+
+ //blur the image
+ Blur(size,type,&stagetwo)(worksurface,workdesc.get_br()-workdesc.get_tl(),blurred);
+
+ //be sure the surface is of the correct size
+ surface->set_wh(renddesc.get_w(),renddesc.get_h());
+
+ {
+ Surface::pen pen(surface->begin());
+ worksurface.blit_to(pen,halfsizex,halfsizey,renddesc.get_w(),renddesc.get_h());
+ }
+ {
+ Surface::alpha_pen pen(surface->begin());
+ pen.set_alpha(get_amount());
+ pen.set_blend_method(get_blend_method());
+ blurred.blit_to(pen,halfsizex,halfsizey,renddesc.get_w(),renddesc.get_h());
+ }
+ if(cb && !cb->amount_complete(10000,10000))
+ {
+ //if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
+ return false;
+ }
+
+ return true;
+}
+
+Layer::Vocab
+Blur_Layer::get_param_vocab(void)const
+{
+ Layer::Vocab ret(Layer_Composite::get_param_vocab());
+
+ ret.push_back(ParamDesc("size")
+ .set_local_name(_("Size"))
+ .set_description(_("Size of Blur"))
+ );
+ ret.push_back(ParamDesc("type")
+ .set_local_name(_("Type"))
+ .set_description(_("Type of blur to use"))
+ .set_hint("enum")
+ .add_enum_value(Blur::BOX,"box",_("Box Blur"))
+ .add_enum_value(Blur::FASTGAUSSIAN,"fastgaussian",_("Fast Gaussian Blur"))
+ .add_enum_value(Blur::CROSS,"cross",_("Cross-Hatch Blur"))
+ .add_enum_value(Blur::GAUSSIAN,"gaussian",_("Gaussian Blur"))
+ .add_enum_value(Blur::DISC,"disc",_("Disc Blur"))
+ );
+
+ return ret;
+}
+
+Rect
+Blur_Layer::get_full_bounding_rect(Context context)const
+{
+ if(is_disabled() || Color::is_onto(get_blend_method()))
+ return context.get_full_bounding_rect();
+
+ Rect bounds(context.get_full_bounding_rect().expand_x(size[0]).expand_y(size[1]));
+
+ return bounds;
+}
projects / synfig.git / blobdiff