From a97a824e5849fe39cd1ea0cb382f2eb239ba280c Mon Sep 17 00:00:00 2001
From: Luc Maisonobe <luc@orekit.org>
Date: Sat, 21 Mar 2015 17:51:31 +0100
Subject: [PATCH] Added a protection against out of bound initial guesses.
---
.../rugged/linesensor/SensorMeanPlaneCrossing.java | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/main/java/org/orekit/rugged/linesensor/SensorMeanPlaneCrossing.java b/src/main/java/org/orekit/rugged/linesensor/SensorMeanPlaneCrossing.java
index c1e9530c..59fdd13c 100644
--- a/src/main/java/org/orekit/rugged/linesensor/SensorMeanPlaneCrossing.java
+++ b/src/main/java/org/orekit/rugged/linesensor/SensorMeanPlaneCrossing.java
@@ -483,6 +483,14 @@ public class SensorMeanPlaneCrossing {
throws RuggedException {
try {
+ // safety check
+ final double startValue;
+ if (initialGuess < minLine || initialGuess > maxLine) {
+ startValue = midLine;
+ } else {
+ startValue = initialGuess;
+ }
+
final UnivariateSolver solver = new BracketingNthOrderBrentSolver(accuracy, 5);
double crossingLine = solver.solve(maxEval, new UnivariateFunction() {
/** {@inheritDoc} */
@@ -498,7 +506,7 @@ public class SensorMeanPlaneCrossing {
throw new RuggedExceptionWrapper(re);
}
}
- }, minLine, maxLine, initialGuess);
+ }, minLine, maxLine, startValue);
final AbsoluteDate date = sensor.getDate(crossingLine);
final FieldVector3D<DerivativeStructure> targetDirection =
--
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