Parameters - zName: z Type: quaternion Read/Write: Read+Write Context: Transformation, Iteration, Coloring Description: This predefined quaternion variable must be used as the main iteration variable. For convenience it is automatically defined. In transformations this variable has no special meaning. It is not initialized in any way. You can use it as you like. In iteration formulas you must use this variable as the main iteration variable. You could use any other variable as the main iteration variable, not using z at all. But then most of the coloring formulas, which access the last z value or the whole array of all z values (function oldz) will not work. In Coloring formulas you can access this variable to retrieve the last z value. You can then color pixels according to some algorithm which depends on the last z value. |