When you work in 3D, you can move and rotate objects in space, but you can also do this with the camera. In this example, we'll draw a simple scene and animate the camera with the camera() function.
You can start by setting up an OpenGL window of 640 x 480 pixels. You also need to declare two float variables named x and z and assign them a value inside the setup() function. These variables will be used to animate the camera.
import processing.opengl.*;
float x;
float z;
void setup()
{
size( 640, 480, OPENGL );
x = 0;
z = 0;
noStroke();
} The next thing we'll do is to draw a simple 3D scene. We'll draw a floor with a cube placed in the center of it. I've used the fill() function before each vertex to give each corner of the floor a different color. This is probably the easiest way to draw gradients with Processing.
background( 255 );
lights();
beginShape();
fill( 255, 0, 0 );
vertex( 0, height, 0);
fill( 255, 255, 0 );
vertex( 0, height...