Image bm817.GIF Rotation around X-Axis
The rotation around X-axis element is a numeric variable defining an active object rotation around the X axis. The X axis is the axis pointing from the coordinate system origin to the right. The direction of rotation around the X axis is defined by the left hand rule: The left hand thumb point in the X axis direction (i.e. from the left to the right), the bent fingers indicate the direction of positive rotation. As a consequence, a positive value of the direction of rotation around the X axis will cause the object's top side to move from the viewer and the object's bottom side to the viewer. This is also depicted in the icon picture of the X rotation. The rotation value is adjusted to range in the 0 through 2*pi interval. By reading the variable one will always get a value from this interval. A rotation is carried out after a scale transformation and before a translation transformation. The rotation succession related to the individual axes can be determined by the order of rotations element.

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