Name

rectMode()

Description

Modifies the location from which rectangles are drawn by changing the way in which parameters given to rect() are interpreted.

The default mode is rectMode(CORNER), which interprets the first two parameters of rect() as the upper-left corner of the shape, while the third and fourth parameters are its width and height.

rectMode(CORNERS) interprets the first two parameters of rect() as the location of one corner, and the third and fourth parameters as the location of the opposite corner.

rectMode(CENTER) interprets the first two parameters of rect() as the shape's center point, while the third and fourth parameters are its width and height.

rectMode(RADIUS) also uses the first two parameters of rect() as the shape's center point, but uses the third and fourth parameters to specify half of the shape's width and height.

The parameter must be written in ALL CAPS because Processing is a case-sensitive language.

Examples

  • size(400, 400);
    rectMode(CORNER);  // Default rectMode is CORNER
    fill(255);  // Set fill to white
    rect(100, 100, 200, 200);  // Draw white rect using CORNER mode
    
    rectMode(CORNERS);  // Set rectMode to CORNERS
    fill(100);  // Set fill to gray
    rect(100, 100, 200, 200);  // Draw gray rect using CORNERS mode
    Image output for example 1
  • size(400, 400);
    rectMode(RADIUS);  // Set rectMode to RADIUS
    fill(255);  // Set fill to white
    rect(200, 200, 120, 120);  // Draw white rect using RADIUS mode
    
    rectMode(CENTER);  // Set rectMode to CENTER
    fill(100);  // Set fill to gray
    rect(200, 200, 120, 120);  // Draw gray rect using CENTER mode
    Image output for example 2

Syntax

  • rectMode(mode)

Parameters

  • mode(int)either CORNER, CORNERS, CENTER, or RADIUS

Return

  • void

Related