This reference is for Processing 2.0+. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.

Name

redraw()

Examples
float x = 0;

void setup() {
  size(200, 200);
  noLoop();
}

void draw() {
  background(204);
  line(x, 0, x, height); 
}

void mousePressed() {
  x += 1;
  redraw();
}
Description Executes the code within draw() one time. This functions allows the program to update the display window only when necessary, for example when an event registered by mousePressed() or keyPressed() occurs.

In structuring a program, it only makes sense to call redraw() within events such as mousePressed(). This is because redraw() does not run draw() immediately (it only sets a flag that indicates an update is needed).

The redraw() function does not work properly when called inside draw(). To enable/disable animations, use loop() and noLoop().
Syntax
redraw()
Returnsvoid
Relateddraw()
loop()
noLoop()
frameRate()
Updated on May 19, 2014 05:29:59pm PDT

Creative Commons License