In sewing pattern code, you have the flexibility to create your own variables using English letters and use them in your code. Variables can represent numeric values, object names, compound objects (paths), or pattern blocks. This documentation will guide you through the process of creating variables, their naming conventions, and important considerations to keep in mind.

The Advantages of Using Variables in Sewing Pattern Code

Using variables in sewing pattern code brings several advantages:

1. Flexibility: Variables allow for dynamic and adaptable sewing patterns. By assigning values to variables, you can easily adjust measurements, sizes, and other parameters, making it simpler to create patterns that fit different body types or accommodate design variations.
2. Efficiency: Variables eliminate repetitive coding. Instead of manually entering specific measurements or values multiple times, you can define them as variables and refer to them throughout the sewing pattern code. This saves time, reduces errors, and simplifies pattern modifications.
3. Consistency: Variables ensure uniformity in your sewing pattern design. By using the same variable for a particular measurement or attribute, you maintain consistency across different pattern pieces or sizes. When adjustments are necessary, updating the variable value automatically updates all relevant sections of the pattern.
4. Readability: Well-chosen variable names enhance code readability. By using descriptive names like "bust" or "hip," it becomes easier to understand the purpose of each variable and its role within the sewing pattern. This improves code comprehension and facilitates collaboration with others.
5. Reuse: Variables enable code reuse and modular design. Once you've defined and tested a variable for a specific purpose, you can reuse it in multiple sewing pattern designs or share it with others. This promotes efficiency, reduces duplication, and encourages the creation of a library of reusable pattern components.

By leveraging variables in sewing pattern code, you gain greater control, flexibility, and efficiency in creating personalized patterns. With practice, you'll discover how variables streamline the sewing pattern-making process and unlock a world of creative possibilities.

Variable Naming and Syntax:

1. Variables can only consist of English letters.
2. Variable names should start with a letter and should not contain any spaces.
3. You can use underscore (_) in variable names, but not dash (-), as the dash is considered a math sign.
4. Variables are not case sensitive, meaning "p1" is the same as "P1" in the code.

Creating Variables:

To create a new variable, follow these steps:

1. Start a new line.
2. Write the variable name followed by an equal sign (=).
3. After the equal sign, provide a numeric value, mathematical equation, or a function that defines the variable.

Example:

Let's look at an example to understand how to create variables in sewing pattern code:

bust_girth = sz16
ea16 = 2
bust = bust_girth + ea16
P2 = apply(P1, BUST, 0)


Explanation:

1. The first line creates a variable named "bust_girth" and assigns it the value of the size measurement constant "sz16."
2. The second line creates a variable named "ea16" and assigns it a numeric value of 2.
3. The third line creates a variable named "bust" and assigns it the value of the sum of "bust_girth" and "ea16."
4. The fourth line creates a variable named "P2" and assigns it the result of the "apply" function with the arguments "P1," "BUST," and 0.

Note on Variable Names:

1. Names starting with "sz" are reserved for size measurement constants. Avoid creating variables with names like sz1, sz2, ..., sz122, as they are predefined.
2. Names starting with "ea" are reserved for ease allowances. These variables define the amount of ease added to the pattern.
3. The mathematical constant "Pi" cannot be overridden and should be used as it is.

Conclusion:

By following the guidelines provided in this documentation, you can create your own variables in sewing pattern code using English letters. Remember to choose meaningful variable names, follow the naming conventions, and avoid using reserved names for size measurements and ease allowances. With variables, you can enhance the flexibility and customization of your pattern-making process. Happy coding!