First commit.

framework/Camera.js

@@ -0,0 +1,83 @@
+import Vector3 		from "./Vector3.js";
+import Matrix4 		from "./Matrix4.js";
+
+export default class Camera {
+
+	eye 		= new Vector3();
+	target 		= new Vector3();
+	up 			= new Vector3( 0, 1, 0 );
+
+	yaw 		= 0;
+	pitch 		= 0;
+	fovRadians 	= Math.PI / 4;
+	near 		= 0.1;
+	far 		= 3000.0;
+	distance 	= 10;
+	viewMatrix = new Float32Array( 16 );
+
+	constructor( eye = [0, 0, 5], target = [0, 0, 0], up = [0, 1, 0] ) {
+
+		this.eye 		= new Vector3( ...eye );
+		this.target 	= new Vector3( ...target );
+		this.up 		= new Vector3( ...up );
+
+		this.distance 	= Vector3.subtract( this.eye, this.target ).length();
+
+		this.viewMatrix = Matrix4.lookAt( this.eye, this.target, this.up );
+
+	}
+
+	update() {
+
+		const x = this.distance * Math.cos( this.pitch ) * Math.sin( this.yaw );
+		const y = this.distance * Math.sin( this.pitch );
+		const z = this.distance * Math.cos( this.pitch ) * Math.cos( this.yaw );
+
+		this.eye = new Vector3(
+			x + this.target.x,
+			y + this.target.y,
+			z + this.target.z
+		);
+
+		this.viewMatrix = Matrix4.lookAt( this.eye, this.target, this.up );
+
+	}
+
+	getViewMatrix() {
+
+		return this.viewMatrix;
+
+	}
+
+	rotate( deltaYaw, deltaPitch ) {
+
+		this.yaw += deltaYaw;
+		this.pitch -= deltaPitch;
+
+		const maxPitch = Math.PI / 2 - 0.01;
+
+		if ( this.pitch > maxPitch ) this.pitch = maxPitch;
+		if ( this.pitch < -maxPitch ) this.pitch = -maxPitch;
+
+		this.update();
+
+	}
+
+	zoom( delta ) {
+
+		this.distance += delta * 1;
+
+		if ( this.distance < 0.1 ) this.distance = 0.1;
+
+		this.update();
+
+	}
+
+	setTarget( target ) {
+
+		this.target = new Vector3( ...target );
+
+		this.update();
+
+	}
+}