From 786dd9755896f3bbdba667e36c8ba271bcaec808 Mon Sep 17 00:00:00 2001
From: Daniel_M_Williams <equipoise@gmail.com>
Date: Sun, 4 Nov 2018 12:59:28 -0500
Subject: [PATCH] [fixes #468] Fixes rendering issue with freeform fins

Cause by a fencepost-error when generating body points for freeform fins on transitions.
Induced by the imprecision of floating point calculations.
---
 core/src/net/sf/openrocket/rocketcomponent/FinSet.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/core/src/net/sf/openrocket/rocketcomponent/FinSet.java b/core/src/net/sf/openrocket/rocketcomponent/FinSet.java
index d3f124131..37b2663cf 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/FinSet.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/FinSet.java
@@ -1095,6 +1095,13 @@ public abstract class FinSet extends ExternalComponent implements RingInstanceab
 			
 			xCur += increment;
 		}
+
+		// correct last point, if beyond a rounding error from body's end.
+		final int lastIndex = points.length - 1;
+		if( body.getLength()-0.000001 < points[lastIndex].x) {
+			points[lastIndex] = points[lastIndex].setX(body.getLength()).setY(body.getAftRadius());
+		}
+
 		return points;
 	}