Update parameters to be const.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/BulletSoftBody/btSoftBody.cpp b/src/BulletSoftBody/btSoftBody.cpp
index 5d5073549..9c438088a 100644
--- a/src/BulletSoftBody/btSoftBody.cpp
+++ b/src/BulletSoftBody/btSoftBody.cpp
@@ -2807,7 +2807,7 @@ bool btSoftBody::checkDeformableContact(const btCollisionObjectWrapper* colObjWr
 //
 // Compute barycentric coordinates (u, v, w) for
 // point p with respect to triangle (a, b, c)
-static void getBarycentric(const btVector3& p, btVector3& a, btVector3& b, btVector3& c, btVector3& bary)
+static void getBarycentric(const btVector3& p, const btVector3& a, const btVector3& b, const btVector3& c, btVector3& bary)
 {
 	btVector3 v0 = b - a, v1 = c - a, v2 = p - a;
 	btScalar d00 = v0.dot(v0);
@@ -2816,6 +2816,7 @@ static void getBarycentric(const btVector3& p, btVector3& a, btVector3& b, btVec
 	btScalar d20 = v2.dot(v0);
 	btScalar d21 = v2.dot(v1);
 	btScalar denom = d00 * d11 - d01 * d01;
+	// In the case of a degenerate triangle, pick a vertex.
 	if (denom == btScalar(0.0)) 
 	{
 		bary.setY(btScalar(0.0));