Pen

Drawing Lines in OSL

Basics

Setting Pen States

• Pen Down: Activates the pen to draw when moving.

  pen "down"

• Pen Up: Deactivates the pen, so movement doesn’t draw.

  pen "up"

Customizing the Pen

• Size: Sets the pen’s thickness.

  pen "size" [int]
  // Example: pen "size" 3

• Opacity: Adjusts the line’s transparency (0-100).

  pen "opacity" [0-100]
  // Example: pen "opacity" 80

• Brightness: Controls the line’s brightness (0-100).

  pen "brightness" [0-100]
  // Example: pen "brightness" 90

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Rendering Lines

Basic Line

Draws a simple straight line.

c #fff  
pen "size" 3  
// Set the line color to white and size to 3.

goto 0 0  
line 50 0 -50 -50  
// Draw a line centered at (0, 0), starting at (50, 0) and ending at (-50, -50).

import "win-buttons"  
// Import the system's window buttons.

Output:

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Dotted Line

Creates a line made of dots.

c #fff  
pen "size" 3  
// Set the dotted line color to white and size to 3.

goto 0 0  
dots -100 -100 100 100 30  
// Draw a dotted line from (-100, -100) to (100, 100) with 30 evenly spaced dots.

import "win-buttons"  
// Import the system's window buttons.

Output:

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Striped Line

Creates a line made of alternating segments.

c #fff  
pen "size" 3  
// Set the striped line color to white and size to 3.

goto 0 0  
stripe -100 100 100 -100 10 5  
// Draw a striped line from (-100, 100) to (100, -100) with 10 segments and 5 units of spacing between them.

import "win-buttons"  
// Import the system's window buttons.

Output: