X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Fsrc%2Fmodules%2Fmod_filter%2Fradialblur.cpp;fp=synfig-core%2Fsrc%2Fmodules%2Fmod_filter%2Fradialblur.cpp;h=6ecc5bb330c1b37593f322e8883b175506ebe68d;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=0000000000000000000000000000000000000000;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git

diff --git a/synfig-core/src/modules/mod_filter/radialblur.cpp b/synfig-core/src/modules/mod_filter/radialblur.cpp
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+/* === 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 &param)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;
+}