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Next Calendar Functions in Python Set 2 monthrange , prcal , weekday Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. Most popular in Advanced Computer Subject. The variable z holds the orbit point. The job of the iterate section is to set z to the value of the next orbit point.
This statement takes 2 complex values found in the variables z and c , and combines them based on the expression to the right of the equal sign; in this case, by squaring z and adding c to the result.
The resulting complex value is assigned to the variable z , replacing the previous value of z. The macros section, global section, and properties section are discussed later. Execute the Display Fractal command on the Tools menu of the Fractal Window to generate the fractal image based on the new equation.
Of course, not all equations produce nice images but it is easy try out any equation you can imagine. Changes to some of the other properties on this page Initial Z , Max Power , Power Factor are required for some equations to get the best results.
See Fractal Equations for details. First, clear the existing program text. To do this, right-click on the editor pane and click the Clear All command. This program includes an iterate section and a properties section.
Let's discuss the properties section first. The properties section is used to define the properties pages associated with the program. Most of the statements in this section result in one or more constants that you will use in the other sections of your program to control program flow.
The user interacts with the properties on the properties pages which sets the values of the constants used by the other sections of your program. Expressions using these constants are highly optimized resulting in much faster execution times. This program defines a single properties page with a single property called Equation as an enum option.
An enum option is used when the data represents a single value from a set of choices. You need to define an enum using an Enum Statement before you define an enum option. The enum statement defines a set of enum items. Each item defines an identifier and a string that represents the item to the user on the properties page. Next, you define an enum option and set the option's type field to the enum name, EquationTypes in our example.
The option's default field should be set to one of the values associated with the named enum. The default is given as the enum name followed by a period. This is also how the enum item is referenced in your program. The enum option is typically used with a switch statement in the program instructions. A combobox is provided for user input. See Enum Statement for details. Click the Refresh Properties Pages button the 3 rd button from the left at the top of the page on the Program Editor to view the Properties item in the page hierarchy to the left and then select the Properties item to view the properties page:.
The user can select one of the equation types using the combobox and the program instructions use this information to control the program processing as shown in the iterate section below:. Here a switch statement based on the Equation property controls which equation to execute during the fractal iteration. In fact, since Equation is a constant, the compiler will evaluate the switch statement during Program Optimization and the switch statement processing is entirely eliminated in the optimized code.
Experiment with the program by changing the program properties and executing the Display Fractal command on the Tools menu of the Fractal Window to generate the fractal image. This program provides essentially the same functionality as the previous program but using a different set of properties. Here we define 2 options; a function proxy F and an integer enum P :.
A function proxy is an option that represents a function. In your code, you invoke a function proxy just like you invoke a function except that the name of the function is the proxy name. The compiler replaces the function proxy with the actual function at compile time. A functionSet statement is used to create a list of functions that can be associated with a function proxy. We define a function proxy F that can be set to one of the functions: Sin , Cos , or Tan.
An integer enum option is used for integral data. It creates a small combobox with a list of integers from which to choose and can be used when the range of integers associated with an option is small. We define an integer enum P that holds an integer between 1 and 6 inclusive. The compiler will replace F with the selected function, and P with the selected integer before executing the program.
Open the Properties Window and select the General properties page:. This dramatically increases the space required for sample data and the time required to compute it, and should be used with care.
I kinda understand why it has to be horrendous, but I don't like it. My x86 assembly language tutorial video containing an earlier version of this fractal program for Windows starting at Part 1 of that x86 assembly language tutorial. Skip to content. Star 0. Branches Tags. Could not load branches. Could not load tags. Latest commit. Git stats 3 commits. Failed to load latest commit information. View code. Running Start from either command line or icon.
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