drawBounds(int lineColour);
This function draws the camera's current boundaries as a grid. The camera's boundaries must first be set by setBounds().
import processing.opengl.*; import carlucci.viewer.*; Viewer myViewer; void setup(){ size(800,600,OPENGL); myViewer = new Viewer(this); myViewer.setBounds(-500,500,-1000,1000); } void draw(){ background(0); myViewer.drawBounds(100); }