32 lines
820 B
JavaScript
32 lines
820 B
JavaScript
// class camera extends THREE.PerspectiveCamera
|
|
var Camera = function() {
|
|
THREE.PerspectiveCamera.apply(this, arguments);
|
|
|
|
this.theta = 0;
|
|
this.position.x = Camera.DISTANCE_X;
|
|
this.position.z = Camera.DISTANCE_Z;
|
|
|
|
this.up = new THREE.Vector3(0,0,1);
|
|
this.target = new THREE.Vector3();
|
|
};
|
|
Camera.prototype = Object.create(THREE.PerspectiveCamera.prototype);
|
|
|
|
// Update function
|
|
Camera.prototype.update = function(time) {
|
|
if (time === undefined) {
|
|
time = 20;
|
|
}
|
|
this.theta += 0.01 * time / 20;
|
|
this.position.x = Camera.DISTANCE_X*Math.cos(this.theta);
|
|
this.position.y = Camera.DISTANCE_X*Math.sin(this.theta);
|
|
};
|
|
|
|
// Look function
|
|
Camera.prototype.look = function() {
|
|
this.lookAt(this.target);
|
|
};
|
|
|
|
// Static members
|
|
Camera.DISTANCE_X = 1000;
|
|
Camera.DISTANCE_Z = 300;
|