X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fexample%2Fmetaballs.cpp;h=c0a9a50dd1d8fca428041e67b74b688eec491b8b;hb=36d01e1527fda602a9aed07d209eb34e6770bca8;hp=ee4e26a604fe940ad91636e0b0321512738b19fd;hpb=28f28705612902c15cd0702cc891fba35bf2d2df;p=synfig.git

diff --git a/synfig-core/trunk/src/modules/example/metaballs.cpp b/synfig-core/trunk/src/modules/example/metaballs.cpp
index ee4e26a..c0a9a50 100644
--- a/synfig-core/trunk/src/modules/example/metaballs.cpp
+++ b/synfig-core/trunk/src/modules/example/metaballs.cpp
@@ -5,16 +5,17 @@
 **	$Id: metaballs.cpp,v 1.1.1.1 2005/01/04 01:23:09 darco Exp $
 **
 **	\legal
-**	Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
 **
-**	This software and associated documentation
-**	are CONFIDENTIAL and PROPRIETARY property of
-**	the above-mentioned copyright holder.
+**	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.
 **
-**	You may not copy, print, publish, or in any
-**	other way distribute this software without
-**	a prior written agreement with
-**	the copyright holder.
+**	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
 */
 /* ========================================================================= */
@@ -68,7 +69,7 @@ Metaballs::Metaballs():
 	color(Color::black())
 {
 }
-	
+
 bool
 Metaballs::set_param(const String & param, const ValueBase &value)
 {
@@ -77,22 +78,22 @@ Metaballs::set_param(const String & param, const ValueBase &value)
 		centers = value;
 		return true;
 	}
-	
+
 	if(	param=="weights" && value.same_as(weights))
 	{
 		weights = value;
 		return true;
 	}
-	
+
 	if(	param=="radii" && value.same_as(radii))
 	{
 		radii = value;
 		return true;
 	}
-	
+
 	IMPORT(color);
 	IMPORT(threshold);
-	
+
 	return Layer_Composite::set_param(param,value);
 }
 
@@ -100,23 +101,23 @@ ValueBase
 Metaballs::get_param(const String &param)const
 {
 	EXPORT(color);
-	
+
 	EXPORT(radii);
-	EXPORT(weights);	
+	EXPORT(weights);
 	EXPORT(centers);
 	EXPORT(threshold);
 
 	EXPORT_NAME();
 	EXPORT_VERSION();
-		
-	return Layer_Composite::get_param(param);	
+
+	return Layer_Composite::get_param(param);
 }
 
 Layer::Vocab
 Metaballs::get_param_vocab()const
 {
 	Layer::Vocab ret(Layer_Composite::get_param_vocab());
-	
+
 	ret.push_back(ParamDesc("color")
 		.set_local_name(_("Color"))
 	);
@@ -124,19 +125,19 @@ Metaballs::get_param_vocab()const
 	ret.push_back(ParamDesc("centers")
 		.set_local_name(_("Points"))
 	);
-	
+
 	ret.push_back(ParamDesc("radii")
 		.set_local_name(_("Radii"))
 	);
-	
+
 	ret.push_back(ParamDesc("weights")
 		.set_local_name(_("Weights"))
 	);
-	
+
 	ret.push_back(ParamDesc("threshold")
 		.set_local_name(_("Threshold"))
 	);
-	
+
 	return ret;
 }
 
@@ -144,14 +145,14 @@ static inline Real densityfunc(const synfig::Point &p, const synfig::Point &c, R
 {
 	const Real dx = p[0] - c[0];
 	const Real dy = p[1] - c[1];
-	
+
 	const Real n = (1 - (dx*dx + dy*dy)/(R*R));
 	return (n*n*n);
 
 	/*
 	f(d) = (1 - d^2)^3
 	f'(d) = -6d * (1 - d^2)^2
-	
+
 	could use this too...
 	f(d) = (1 - d^2)^2
 	f'(d) = -6d * (1 - d^2)
@@ -162,13 +163,13 @@ Real
 Metaballs::totaldensity(const Point &pos) const
 {
 	Real density = 0;
-	
+
 	//sum up weighted functions
 	for(unsigned int i=0;i<centers.size();i++)
 	{
 		density += weights[i] * densityfunc(pos,centers[i], radii[i]);
 	}
-	
+
 	return density;
 }
 
@@ -176,8 +177,8 @@ Color
 Metaballs::get_color(Context context, const Point &pos)const
 {
 	Real dens = totaldensity(pos);
-	
-	if(dens >= threshold) 
+
+	if(dens >= threshold)
 		return color;
 	else
 		return context.get_color(pos);
@@ -185,47 +186,47 @@ Metaballs::get_color(Context context, const Point &pos)const
 
 bool
 Metaballs::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
-{	
+{
 	// Width and Height of a pixel
-	const Point br(renddesc.get_br()), 
+	const Point br(renddesc.get_br()),
 				tl(renddesc.get_tl());
-	
-	const int 	w = renddesc.get_w(), 
+
+	const int 	w = renddesc.get_w(),
 				h = renddesc.get_h();
-	
+
 	Real	pw = renddesc.get_pw();
 	Real	ph = renddesc.get_ph();
-		
+
 	SuperCallback supercb(cb,0,9000,10000);
-	
+
 	if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 	{
 		if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 		return false;
 	}
-		
+
 	Point pos(tl[0],tl[1]);
-	
+
 	Real	dens;
-	
+
 	if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 	{
 		if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 		return false;
 	}
-	
+
 	for(int y = 0; y < h; y++, pos[1] += ph)
 	{
 		pos[0] = tl[0];
 		for(int x = 0; x < w; x++, pos[0] += pw)
 		{
 			dens = totaldensity(pos);
-			
+
 			if(dens >= threshold)
 			{
 				(*surface)[y][x] = Color::blend(color,(*surface)[y][x],get_amount(),get_blend_method());
 			}
-		}		
+		}
 	}
 
 	// Mark our progress as finished