commit 8c3cdec51385e8f9d01272ae1262aacd4d4a35f7
Author: Leszek Koltunski <leszek@distorted.org>
Date:   Sat Nov 5 00:39:53 2016 +0000

    Progress with Wind

diff --git a/src/main/java/org/distorted/library/DistortedObject.java b/src/main/java/org/distorted/library/DistortedObject.java
index 6b7c475..ea05c04 100644
--- a/src/main/java/org/distorted/library/DistortedObject.java
+++ b/src/main/java/org/distorted/library/DistortedObject.java
@@ -555,7 +555,10 @@ public abstract class DistortedObject
 /**
  * Shears the Object.
  *
- * @param shear   The 3-tuple of shear factors.
+ * @param shear   The 3-tuple of shear factors. The first controls level
+ *                of shearing in the X-axis, second - Y-axis and the third -
+ *                Z-axis. Each is the tangens of the shear angle, i.e 0 -
+ *                no shear, 1 - shear by 45 degrees (tan(45deg)=1) etc.
  * @param center  Center of shearing, i.e. the point which stays unmoved.
  * @return        ID of the effect added, or -1 if we failed to add one.
  */