From: dooglus <dooglus@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Sat, 5 Apr 2008 20:22:47 +0000 (+0000)
Subject: Fix a bug in the plant layer: when the plant is so small that we can't calculate... 
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=d65b91054ec401dc3188d615fe2f5c0581b105c9;p=synfig.git

Fix a bug in the plant layer: when the plant is so small that we can't calculate the perpendicular to its bline, skip trying to branch it.


git-svn-id: http://svn.voria.com/code@1962 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-core/trunk/src/modules/mod_particle/plant.cpp b/synfig-core/trunk/src/modules/mod_particle/plant.cpp
index 1cc6dc0..60652a4 100644
--- a/synfig-core/trunk/src/modules/mod_particle/plant.cpp
+++ b/synfig-core/trunk/src/modules/mod_particle/plant.cpp
@@ -241,6 +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);