--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file radialblur.cpp
+** \brief Implementation of the "Radial Blur" layer
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 Chris Moore
+**
+** 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 <config.h>
+#endif
+
+#include "radialblur.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/transform.h>
+#include <ETL/misc>
+
+#endif
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_LAYER_INIT(RadialBlur);
+SYNFIG_LAYER_SET_NAME(RadialBlur,"radial_blur");
+SYNFIG_LAYER_SET_LOCAL_NAME(RadialBlur,N_("Radial Blur"));
+SYNFIG_LAYER_SET_CATEGORY(RadialBlur,N_("Blurs"));
+SYNFIG_LAYER_SET_VERSION(RadialBlur,"0.1");
+SYNFIG_LAYER_SET_CVS_ID(RadialBlur,"$Id$");
+
+/* === 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 ================================================= */
+
+RadialBlur::RadialBlur():
+ origin (0,0),
+ size (0.2),
+ fade_out(false)
+{
+}
+
+RadialBlur::~RadialBlur()
+{
+}
+
+bool
+RadialBlur::set_param(const String & param, const ValueBase &value)
+{
+ IMPORT(origin);
+ IMPORT(size);
+ IMPORT(fade_out);
+
+ return Layer_Composite::set_param(param,value);
+}
+
+ValueBase
+RadialBlur::get_param(const String ¶m)const
+{
+ EXPORT(origin);
+ EXPORT(size);
+ EXPORT(fade_out);
+
+ EXPORT_NAME();
+ EXPORT_VERSION();
+
+ return Layer_Composite::get_param(param);
+}
+
+Layer::Vocab
+RadialBlur::get_param_vocab()const
+{
+ Layer::Vocab ret(Layer_Composite::get_param_vocab());
+
+ ret.push_back(ParamDesc("origin")
+ .set_local_name(_("Origin"))
+ .set_description(_("Point where you want the origin to be"))
+ );
+
+ ret.push_back(ParamDesc("size")
+ .set_local_name(_("Size"))
+ .set_description(_("Size of blur"))
+ .set_origin("origin")
+ );
+
+ ret.push_back(ParamDesc("fade_out")
+ .set_local_name(_("Fade Out"))
+ );
+
+ return ret;
+}
+
+Color
+RadialBlur::get_color(Context context, const Point &p)const
+{
+ //! \writeme
+ return context.get_color(p);
+}
+
+bool
+RadialBlur::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
+{
+ // don't do anything at quality 10
+ if (quality == 10)
+ return context.accelerated_render(surface,quality,renddesc,cb);
+
+ if(cb && !cb->amount_complete(0,10000))
+ return false;
+
+ Surface tmp_surface;
+ const Point tl(renddesc.get_tl()), br(renddesc.get_br());
+ const int w(renddesc.get_w()), h(renddesc.get_h());
+ const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
+
+ Rect rect(tl, br);
+ Point pos;
+
+ // find how far towards the origin of the blur we are going to
+ // wander for each of the 4 corners of our tile, expanding the
+ // render description for each of them if necessary
+ int x, y;
+ for(y=0,pos[1]=tl[1];y<h;y+=(h-1),pos[1]+=ph*(h-1))
+ for(x=0,pos[0]=tl[0];x<w;x+=(w-1),pos[0]+=pw*(w-1))
+ rect.expand((pos-origin)*(1.0f-size) + origin);
+
+ // round out to the nearest pixel
+ Point tmp_surface_tl = Point(tl[0] - pw*(int((tl[0]-rect.get_min()[0])/pw+1-1e-6)),
+ tl[1] - ph*(int((tl[1]-rect.get_max()[1])/ph+1-1e-6)));
+ Point tmp_surface_br = Point(br[0] + pw*(int((rect.get_max()[0]-br[0])/pw+2-1e-6)),
+ br[1] + ph*(int((rect.get_min()[1]-br[1])/ph+2-1e-6)));
+
+ // round to nearest integer width and height (should be very
+ // nearly whole numbers already, but don't want to round 5.99999
+ // down to 5)
+ int tmp_surface_width = int((tmp_surface_br[0]-tmp_surface_tl[0])/pw + 0.5);
+ int tmp_surface_height = int((tmp_surface_br[1]-tmp_surface_tl[1])/ph + 0.5);
+
+ RendDesc desc(renddesc);
+ desc.clear_flags();
+ desc.set_wh(tmp_surface_width,tmp_surface_height);
+ desc.set_tl(tmp_surface_tl);
+ desc.set_br(tmp_surface_br);
+
+ // render the layers beneath us
+ if(!context.accelerated_render(&tmp_surface,quality,desc,cb))
+ return false;
+
+ // copy the part of the layers beneath us that corresponds to this tile
+ surface->set_wh(w, h);
+ Surface::pen pen(surface->get_pen(0, 0));
+ tmp_surface.blit_to(pen,
+ int((tl[0] - tmp_surface_tl[0])/pw + 0.5),
+ int((tl[1] - tmp_surface_tl[1])/ph + 0.5),
+ w, h);
+
+ Surface::alpha_pen apen(surface->begin());
+
+ apen.set_alpha(get_amount());
+ apen.set_blend_method(get_blend_method());
+
+/*
+ int steps(5);
+
+ if(quality>=9)steps=20;
+ else if(quality>=5)steps=30;
+ else if(quality>=4)steps=60;
+ else if(quality>=3)steps=100;
+ else steps=120;
+*/
+
+ Surface::value_prep_type cooker;
+
+ // loop through the pixels
+ for(y=0,pos[1]=tl[1];y<h;y++,apen.inc_y(),apen.dec_x(x),pos[1]+=ph)
+ for(x=0,pos[0]=tl[0];x<w;x++,apen.inc_x(),pos[0]+=pw)
+ {
+ Point
+ begin(pos-tmp_surface_tl),
+ end((pos-origin)*(1.0f-size) + origin-tmp_surface_tl);
+ begin[0]/=pw;begin[1]/=ph;
+ end[0]/=pw;end[1]/=ph;
+
+ Color pool(Color::alpha());
+ int poolsize(0);
+
+ int x0(round_to_int(begin[0])),
+ y0(round_to_int(begin[1])),
+ x1(round_to_int(end[0])),
+ y1(round_to_int(end[1]));
+
+ int i;
+ int steep = 1;
+ int sx, sy; /* step positive or negative (1 or -1) */
+ int dx, dy; /* delta (difference in X and Y between points) */
+ int e;
+ int w(tmp_surface_width), h(tmp_surface_height);
+
+ dx = abs(x1 - x0);
+ sx = ((x1 - x0) > 0) ? 1 : -1;
+ dy = abs(y1 - y0);
+ sy = ((y1 - y0) > 0) ? 1 : -1;
+ if (dy > dx)
+ {
+ steep = 0;
+ swap(x0, y0);
+ swap(dx, dy);
+ swap(sx, sy);
+ swap(w,h);
+ }
+ e = (dy << 1) - dx;
+ for (i = 0; i < dx; i++)
+ {
+ if(y0>=0 && x0>=0 && y0<h && x0<w)
+ {
+ if(fade_out)
+ {
+ if (steep)
+ pool+=cooker.cook(tmp_surface[y0][x0])*(i-dx);
+ else
+ pool+=cooker.cook(tmp_surface[x0][y0])*(i-dx);
+ poolsize+=(i-dx);
+ }
+ else
+ {
+ if (steep)
+ pool+=cooker.cook(tmp_surface[y0][x0]);
+ else
+ pool+=cooker.cook(tmp_surface[x0][y0]);
+ poolsize+=1;
+ }
+ } else
+ printf("%s:%d unexpected %d >= %d or %d >= %d?\n", __FILE__, __LINE__, x0, w, y0, h);
+
+ while (e >= 0)
+ {
+ y0 += sy;
+ e -= (dx << 1);
+ }
+ x0 += sx;
+ e += (dy << 1);
+ }
+ if(poolsize)
+ {
+ pool/=poolsize;
+ apen.put_value(cooker.uncook(pool));
+ }
+/*
+ Point begin,end;
+ begin=pos;
+ end=(pos-origin)*(1.0f-size)+origin;
+
+ Color pool(Color::alpha());
+ float f,poolsize(0);
+ int i;
+ int steps(steps*size);
+ for(f=0,i=0;i<steps;i++,f+=1.0f/(steps-1))
+ {
+ Point loc((end-begin)*f+begin-tl);
+ loc[0]/=pw;loc[1]/=ph;
+
+ if(fade_out)
+ pool+=tmp_surface.linear_sample(loc[0],loc[1])*(i-steps),poolsize+=(i-steps);
+ else
+ pool+=tmp_surface.linear_sample(loc[0],loc[1]),poolsize+=1;
+ }
+ pool/=poolsize;
+ apen.put_value(pool);
+*/
+ }
+
+
+ if(cb && !cb->amount_complete(10000,10000)) return false;
+
+// #define DRAW_TILE_OUTLINES
+#ifdef DRAW_TILE_OUTLINES
+ // draw red lines to show tiles
+ {
+ int x, y;
+ if (w != 0 && h != 0) {
+ Surface::alpha_pen apen(surface->begin());
+ apen.set_alpha(get_amount());
+ apen.set_blend_method(get_blend_method());
+ apen.set_value(Color(1, 0, 0, .1));
+ for (x = 0; x < w; x++) { apen.put_value(); apen.inc_x(); } apen.dec_x(w);
+ for (y = 0; y < h; y++) { apen.put_value(); apen.inc_y(); } apen.dec_y(h);
+ }
+ }
+#endif // DRAW_TILE_OUTLINES
+
+ return true;
+}
projects / synfig.git / blobdiff