From ab9ee3aa6c7e0ed41502f3e76151e8fa97d3736a Mon Sep 17 00:00:00 2001
From: Andreas Antener <antener_a@gmx.ch>
Date: Fri, 5 Jan 2018 11:57:58 +0100
Subject: [PATCH] conversion: added -45 deg pitch rotation

---
 src/lib/conversion/rotation.cpp | 7 +++++++
 src/lib/conversion/rotation.h   | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/src/lib/conversion/rotation.cpp b/src/lib/conversion/rotation.cpp
index 145b3b54c7..61da4d882a 100644
--- a/src/lib/conversion/rotation.cpp
+++ b/src/lib/conversion/rotation.cpp
@@ -272,5 +272,12 @@ rotate_3f(enum Rotation rot, float &x, float &y, float &z)
 			x = tmp;
 			return;
 		}
+
+	case ROTATION_PITCH_315: {
+			tmp = HALF_SQRT_2 * x - HALF_SQRT_2 * z;
+			z = HALF_SQRT_2 * z + HALF_SQRT_2 * x;
+			x = tmp;
+			return;
+		}
 	}
 }
diff --git a/src/lib/conversion/rotation.h b/src/lib/conversion/rotation.h
index e37a1dfdce..a2624844a2 100644
--- a/src/lib/conversion/rotation.h
+++ b/src/lib/conversion/rotation.h
@@ -82,6 +82,7 @@ enum Rotation {
 	ROTATION_PITCH_90_ROLL_270	 = 31,
 	ROTATION_PITCH_9_YAW_180 = 32,
 	ROTATION_PITCH_45 = 33,
+	ROTATION_PITCH_315 = 34,
 	ROTATION_MAX
 };
 
@@ -126,6 +127,7 @@ const rot_lookup_t rot_lookup[] = {
 	{270,  90,   0 },
 	{  0,   9, 180 },
 	{ 0,   45,   0 },
+	{ 0,  315,   0 },
 };
 
 /**