1 files changed, 61 insertions, 0 deletions
diff --git a/doc/src/10-best-practices/distortion-spiral.qdoc b/doc/src/10-best-practices/distortion-spiral.qdoc
new file mode 100644
index 00000000..f9e5b66d
--- /dev/null
+++ b/doc/src/10-best-practices/distortion-spiral.qdoc
@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+
+\title Distortion Spiral
+\page distortion-spiral.html
+\ingroup qt3dstudio-best-practices
+
+The distortion spiral effect creates a twirl effect.
+\image effects-distortion-spiral.png
+
+\section1 Properties
+
+\table
+  \header
+    \li Property
+    \li Description
+  \row
+    \li
+      Radius
+    \li
+      The size of the distorted area.
+  \row
+    \li
+      Spiral
+    \li
+      The amount of twirling.
+  \row
+    \li
+      Center
+    \li
+      The center of the effect. \c 0.5 and \c 0.5 is the center of the layer while \c 1.0 and \c 1.0
+      is the upper right corner of the layer.
+\endtable
+
+*/