captureEvent() / Libraries / Processing.org

Name

captureEvent()

Description

This event function is run when a new camera frame is available. Use the read() method to capture this frame. If there is more than one capture device in the program, captureEvent() is called each time any of the devices has a new frame available. Use an if within the function to determine which device is triggering the event.

This function is for people who want to process the image data separately from drawing (and as quickly as possible.) You cannot draw to the screen inside the captureEvent() function. If you want to draw immediately based on the new image, then use the Capture.available() method.

Examples

import processing.video.*; 
Capture cam; 
 
void setup() { 
  size(200, 200); 
  cam = new Capture(this);
  cam.start(); 
} 
 
void draw() { 
  image(cam, 0, 0); 
} 

void captureEvent(Capture c) {
  c.read();
}