3D Game Programming

varshape =newTHREE.PlaneGeometry(100, 100);

varcover =newTHREE.MeshNormalMaterial();

varground =newTHREE.Mesh(shape, cover);

scene.add(ground);

ground.rotation.set(0.5, 0, 0);

Don’t forget the rotation on the last line. Planes are so thin that you might

not see them when looking directly at them.

The numbers when building a plane are the width and depth. A plane that

is 300 wide and 100 deep might look like this:

That’s pretty much all there is to know about planes. Move our plane out of

the way:

varshape =newTHREE.PlaneGeometry(300, 100);

varcover =newTHREE.MeshNormalMaterial();

varground =newTHREE.Mesh(shape, cover);

scene.add(ground);

ground.position.set(-250, -250, -250);

Now let’s move on to the greatest shape in the world.

Rendering Donuts (Not the Kind You Eat) with Torus

In 3D-programming-speak, a donut is called a torus. The simplest torus that

we can create needs us to assign two values: one for the distance from the

center to the outside edge, and the other for the thickness of the tube.

TorusGeometry(100, 25)

Type the following into ICE:

varshape =newTHREE.TorusGeometry(100, 25);

varcover =newTHREE.MeshNormalMaterial();

vardonut =newTHREE.Mesh(shape, cover);

scene.add(donut);

You should see a very chunky donut, as shown in Figure 1, A Chunky Donut,

on page 13.

By now you probably know how to make the donut less chunky.

Chapter 1. Project: Creating Simple Shapes • 12

Prepared exclusively for Michael Powell report erratum • discuss