TITANIC: dvector work, fn5 renamed to RotXY

It does a rotation around the X axis then Y.

3 files changed, 9 insertions, 4 deletions

diff --git a/engines/titanic/star_control/dvector.cpp b/engines/titanic/star_control/dvector.cpp
index 93e52b379d..8ea167a8be 100644
--- a/engines/titanic/star_control/dvector.cpp
+++ b/engines/titanic/star_control/dvector.cpp
@@ -101,7 +101,7 @@ DAffine DVector::getFrameTransform(const DVector &v) {
 	return matrix4.compose(matrix3);
 }
 
-DAffine DVector::fn5() const {
+DAffine DVector::RotXY() const {
 	DVector v1 = getAnglesAsVect();
 	DAffine m1, m2;
 	m1.setRotationMatrix(X_AXIS, v1._y * Rad2Deg);
diff --git a/engines/titanic/star_control/dvector.h b/engines/titanic/star_control/dvector.h
index d0a87be412..7edb37f036 100644
--- a/engines/titanic/star_control/dvector.h
+++ b/engines/titanic/star_control/dvector.h
@@ -73,7 +73,12 @@ public:
 	 * a vector rotation based on input vector v
 	 */
 	DAffine getFrameTransform(const DVector &v);
-	DAffine fn5() const;
+
+	/**
+         * Returns a affine matrix that does a x then a y axis frame rotation
+	 * based on the orientation of this vector
+	 */
+	DAffine RotXY() const;
 
 	/**
 	 * Returns true if the passed vector equals this one
diff --git a/engines/titanic/star_control/star_camera.cpp b/engines/titanic/star_control/star_camera.cpp
index 6192fc579d..f8f61554ac 100644
--- a/engines/titanic/star_control/star_camera.cpp
+++ b/engines/titanic/star_control/star_camera.cpp
@@ -289,7 +289,7 @@ void CStarCamera::setViewportAngle(const FPoint &angles) {
 
 		tempV1 = _matrix._row2 - _matrix._row1;
 		diffV = tempV1;
-		m1 = diffV.fn5();
+		m1 = diffV.RotXY();
 		m1 = m1.compose(subX);
 		subX = m1.inverseTransform();
 		subX = subX.compose(subY);
@@ -459,7 +459,7 @@ void CStarCamera::lockMarker2(CViewport *viewport, const FVector &v) {
 
 	DAffine m2(X_AXIS, _matrix._row1);
 	DVector tempV1 = v - _matrix._row1;
-	DAffine m1 = tempV1.fn5();
+	DAffine m1 = tempV1.RotXY();
 	m1 = m1.compose(m2);
 	m2 = m1.inverseTransform();