X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_particle%2Fplant.cpp;h=47b13a3e61a5c40d5e0bbc07383dfa5234ba2a63;hb=284f2de6f33ed153630ffda94653a9eea093095e;hp=1a89f1f446d41a49de12b382079ca7bd8d36d8f7;hpb=0395514261f9ab95377771b808a733f973c8a562;p=synfig.git

diff --git a/synfig-core/trunk/src/modules/mod_particle/plant.cpp b/synfig-core/trunk/src/modules/mod_particle/plant.cpp
index 1a89f1f..47b13a3 100644
--- a/synfig-core/trunk/src/modules/mod_particle/plant.cpp
+++ b/synfig-core/trunk/src/modules/mod_particle/plant.cpp
@@ -6,7 +6,7 @@
 **
 **	\legal
 **	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**	Copyright (c) 2007 Chris Moore
+**	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
@@ -76,6 +76,7 @@ SYNFIG_LAYER_SET_CVS_ID(Plant,"$Id$");
 
 
 Plant::Plant():
+	origin(0,0),
 	split_angle(Angle::deg(10)),
 	gravity(0,-0.1),
 	velocity(0.3),
@@ -240,6 +241,9 @@ Plant::sync()const
 			if((((i+1)*sprouts + steps/2) / steps) > branch_count) {
 				Vector branch_velocity(deriv(f).norm()*velocity + deriv(f).perp().norm()*perp_velocity);
 
+				if (isnan(branch_velocity[0]) || isnan(branch_velocity[1]))
+					continue;
+
 				branch_velocity[0] += random_factor * random(Random::SMOOTH_COSINE, 1, f*splits, 0.0f, 0.0f);
 				branch_velocity[1] += random_factor * random(Random::SMOOTH_COSINE, 2, f*splits, 0.0f, 0.0f);
 
@@ -283,6 +287,7 @@ Plant::set_param(const String & param, const ValueBase &value)
 		needs_sync_=true;
 		return true;
 	}
+	IMPORT(origin);
 	IMPORT_PLUS(split_angle,needs_sync_=true);
 	IMPORT_PLUS(gravity,needs_sync_=true);
 	IMPORT_PLUS(gradient,needs_sync_=true);
@@ -308,6 +313,9 @@ Plant::set_param(const String & param, const ValueBase &value)
 	IMPORT(size);
 	IMPORT(size_as_alpha);
 	IMPORT(reverse);
+	IMPORT(use_width);
+
+	IMPORT_AS(origin,"offset");
 
 	return Layer_Composite::set_param(param,value);
 }
@@ -342,6 +350,7 @@ Plant::get_param(const String& param)const
 	if(param=="seed")
 		return random.get_seed();
 	EXPORT(bline);
+	EXPORT(origin);
 	EXPORT(split_angle);
 	EXPORT(gravity);
 	EXPORT(velocity);
@@ -353,9 +362,9 @@ Plant::get_param(const String& param)const
 	EXPORT(random_factor);
 	EXPORT(drag);
 	EXPORT(size);
-
 	EXPORT(size_as_alpha);
 	EXPORT(reverse);
+	EXPORT(use_width);
 
 	EXPORT_NAME();
 
@@ -373,8 +382,12 @@ Plant::get_param_vocab()const
 	ret.push_back(ParamDesc("bline")
 		.set_local_name(_("Vertices"))
 		.set_description(_("A list of BLine Points"))
-		//.set_origin("offset")
-		//.set_scalar("width")
+		.set_origin("origin")
+		.set_hint("width")
+	);
+
+	ret.push_back(ParamDesc("origin")
+		.set_local_name(_("Origin"))
 	);
 
 	ret.push_back(ParamDesc("gradient")
@@ -449,6 +462,11 @@ Plant::get_param_vocab()const
 		.set_description(_("Drag slows the growth"))
 	);
 
+	ret.push_back(ParamDesc("use_width")
+		.set_local_name(_("Use Width"))
+		.set_description(_("Scale the velocity by the bline's width"))
+	);
+
 	return ret;
 }
 
@@ -474,8 +492,8 @@ Plant::accelerated_render(Context context,Surface *surface,int quality, const Re
 	dest_surface.set_wh(surface->get_w(),surface->get_h());
 	dest_surface.clear();
 
-	const Point	tl(renddesc.get_tl());
-	const Point br(renddesc.get_br());
+	const Point	tl(renddesc.get_tl()-origin);
+	const Point br(renddesc.get_br()-origin);
 
 	const int	w(renddesc.get_w());
 	const int	h(renddesc.get_h());