displayDensity() / Reference / Processing.org

Name

displayDensity()

Description

This function returns the number "2" if the screen is a high-density screen (called a Retina display on OS X or high-dpi on Windows and Linux) and a "1" if not. This information is useful for a program to adapt to run at double the pixel density on a screen that supports it.

Examples

void setup() {
  size(100, 100);
  pixelDensity(displayDensity());
  noStroke();
}

void draw() {
  background(0);
  ellipse(30, 48, 36, 36);
  ellipse(70, 48, 36, 36);
}

Syntax

displayDensity()
displayDensity(display)

Parameters

display(int)the display number to check (1-indexed to match the Preferences dialog box)

Return

int

pixelDensity()
size()

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