From 25c82c98784c5654ab437c2a0831f4227f9090d0 Mon Sep 17 00:00:00 2001
From: David Wisth <davidwisth@gmail.com>
Date: Mon, 3 Jan 2022 16:41:21 +1100
Subject: [PATCH] change a couple of variables to const

---
 gtsam_unstable/slam/ProjectionFactorPPPC.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gtsam_unstable/slam/ProjectionFactorPPPC.h b/gtsam_unstable/slam/ProjectionFactorPPPC.h
index 35940b201..18ee13b9a 100644
--- a/gtsam_unstable/slam/ProjectionFactorPPPC.h
+++ b/gtsam_unstable/slam/ProjectionFactorPPPC.h
@@ -115,8 +115,8 @@ class GTSAM_UNSTABLE_EXPORT ProjectionFactorPPPC
       try {
           if(H1 || H2 || H3 || H4) {
             Matrix H0, H02;
-            PinholeCamera<CALIBRATION> camera(pose.compose(transform, H0, H02), K);
-            Point2 reprojectionError(camera.project(point, H1, H3, H4) - measured_);
+            const PinholeCamera<CALIBRATION> camera(pose.compose(transform, H0, H02), K);
+            const Point2 reprojectionError(camera.project(point, H1, H3, H4) - measured_);
             *H2 = *H1 * H02;
             *H1 = *H1 * H0;
             return reprojectionError;