From e4535b1255d85b4d13b8dc54e98632fb1e7d096c Mon Sep 17 00:00:00 2001
From: Matt Williams <matt@miliams.com>
Date: Wed, 21 Sep 2011 00:19:35 +0200
Subject: [PATCH] Add previousVoxel to raycast result.

Thanks to Sceptrix for the patch

http://thermite3d.org/phpBB3/viewtopic.php?t=243
---
 library/PolyVoxCore/include/PolyVoxCore/Raycast.h   | 1 +
 library/PolyVoxCore/include/PolyVoxCore/Raycast.inl | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/library/PolyVoxCore/include/PolyVoxCore/Raycast.h b/library/PolyVoxCore/include/PolyVoxCore/Raycast.h
index b94cf5f8..860f4efb 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/Raycast.h
+++ b/library/PolyVoxCore/include/PolyVoxCore/Raycast.h
@@ -41,6 +41,7 @@ namespace PolyVox
 		bool foundIntersection;
 		///If an intersection was found then this field holds the intersecting voxel, otherwise it is undefined.
 		Vector3DInt32 intersectionVoxel;
+		Vector3DInt32 previousVoxel;
 	};
 
 	/// The Raycast class can be used to find the fist filled voxel along a given path.
diff --git a/library/PolyVoxCore/include/PolyVoxCore/Raycast.inl b/library/PolyVoxCore/include/PolyVoxCore/Raycast.inl
index fb0f99ef..2c051073 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/Raycast.inl
+++ b/library/PolyVoxCore/include/PolyVoxCore/Raycast.inl
@@ -143,6 +143,7 @@ namespace PolyVox
 				m_result.intersectionVoxel = Vector3DInt32(i,j,k);
 				return;
 			}
+			m_result.previousVoxel = Vector3DInt32(i,j,k);
 
 			if(tx <= ty && tx <= tz)
 			{
@@ -174,5 +175,6 @@ namespace PolyVox
 		//Didn't hit anything
 		m_result.foundIntersection = false;
 		m_result.intersectionVoxel = Vector3DInt32(0,0,0);
+		m_result.previousVoxel = Vector3DInt32(0,0,0);
 	}
 }
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