stats

Author: michaljaz

index.html

@@ -57,7 +57,7 @@
     <script type="module">
 import * as THREE from 'https://threejsfundamentals.org/threejs/resources/threejs/r115/build/three.module.js';
 import { BufferGeometryUtils } from 'https://threejsfundamentals.org/threejs/resources/threejs/r115/examples/jsm/utils/BufferGeometryUtils.js';
-
+import Stats from 'https://threejsfundamentals.org/threejs/resources/threejs/r115/examples/jsm/libs/stats.module.js';
 
 class Terrain{
   constructor(options){
@@ -330,6 +330,10 @@
 FirstPersonControls(document.getElementById("cross"),camera,0.07)
 
 
+var stats = new Stats();
+stats.showPanel( 0 ); // 0: fps, 1: ms, 2: mb, 3+: custom
+document.body.appendChild( stats.dom );
+
 var ambientLight = new THREE.AmbientLight( 0xcccccc );
 scene.add( ambientLight );
 var directionalLight = new THREE.DirectionalLight( 0x666666, 2 );
@@ -491,7 +495,9 @@
 
 
 function animate() {
+  stats.begin();
   render()
+  stats.end();
   requestAnimationFrame(animate)
 }
 

js/stats.js

@@ -0,0 +1,171 @@
+/**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+var Stats = function () {
+
+	var mode = 0;
+
+	var container = document.createElement( 'div' );
+	container.style.cssText = 'position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000';
+	container.addEventListener( 'click', function ( event ) {
+
+		event.preventDefault();
+		showPanel( ++ mode % container.children.length );
+
+	}, false );
+
+	//
+
+	function addPanel( panel ) {
+
+		container.appendChild( panel.dom );
+		return panel;
+
+	}
+
+	function showPanel( id ) {
+
+		for ( var i = 0; i < container.children.length; i ++ ) {
+
+			container.children[ i ].style.display = i === id ? 'block' : 'none';
+
+		}
+
+		mode = id;
+
+	}
+
+	//
+
+	var beginTime = ( performance || Date ).now(), prevTime = beginTime, frames = 0;
+
+	var fpsPanel = addPanel( new Stats.Panel( 'FPS', '#0ff', '#002' ) );
+	var msPanel = addPanel( new Stats.Panel( 'MS', '#0f0', '#020' ) );
+
+	if ( self.performance && self.performance.memory ) {
+
+		var memPanel = addPanel( new Stats.Panel( 'MB', '#f08', '#201' ) );
+
+	}
+
+	showPanel( 0 );
+
+	return {
+
+		REVISION: 16,
+
+		dom: container,
+
+		addPanel: addPanel,
+		showPanel: showPanel,
+
+		begin: function () {
+
+			beginTime = ( performance || Date ).now();
+
+		},
+
+		end: function () {
+
+			frames ++;
+
+			var time = ( performance || Date ).now();
+
+			msPanel.update( time - beginTime, 200 );
+
+			if ( time >= prevTime + 1000 ) {
+
+				fpsPanel.update( ( frames * 1000 ) / ( time - prevTime ), 100 );
+
+				prevTime = time;
+				frames = 0;
+
+				if ( memPanel ) {
+
+					var memory = performance.memory;
+					memPanel.update( memory.usedJSHeapSize / 1048576, memory.jsHeapSizeLimit / 1048576 );
+
+				}
+
+			}
+
+			return time;
+
+		},
+
+		update: function () {
+
+			beginTime = this.end();
+
+		},
+
+		// Backwards Compatibility
+
+		domElement: container,
+		setMode: showPanel
+
+	};
+
+};
+
+Stats.Panel = function ( name, fg, bg ) {
+
+	var min = Infinity, max = 0, round = Math.round;
+	var PR = round( window.devicePixelRatio || 1 );
+
+	var WIDTH = 80 * PR, HEIGHT = 48 * PR,
+			TEXT_X = 3 * PR, TEXT_Y = 2 * PR,
+			GRAPH_X = 3 * PR, GRAPH_Y = 15 * PR,
+			GRAPH_WIDTH = 74 * PR, GRAPH_HEIGHT = 30 * PR;
+
+	var canvas = document.createElement( 'canvas' );
+	canvas.width = WIDTH;
+	canvas.height = HEIGHT;
+	canvas.style.cssText = 'width:80px;height:48px';
+
+	var context = canvas.getContext( '2d' );
+	context.font = 'bold ' + ( 9 * PR ) + 'px Helvetica,Arial,sans-serif';
+	context.textBaseline = 'top';
+
+	context.fillStyle = bg;
+	context.fillRect( 0, 0, WIDTH, HEIGHT );
+
+	context.fillStyle = fg;
+	context.fillText( name, TEXT_X, TEXT_Y );
+	context.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );
+
+	context.fillStyle = bg;
+	context.globalAlpha = 0.9;
+	context.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );
+
+	return {
+
+		dom: canvas,
+
+		update: function ( value, maxValue ) {
+
+			min = Math.min( min, value );
+			max = Math.max( max, value );
+
+			context.fillStyle = bg;
+			context.globalAlpha = 1;
+			context.fillRect( 0, 0, WIDTH, GRAPH_Y );
+			context.fillStyle = fg;
+			context.fillText( round( value ) + ' ' + name + ' (' + round( min ) + '-' + round( max ) + ')', TEXT_X, TEXT_Y );
+
+			context.drawImage( canvas, GRAPH_X + PR, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT, GRAPH_X, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT );
+
+			context.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, GRAPH_HEIGHT );
+
+			context.fillStyle = bg;
+			context.globalAlpha = 0.9;
+			context.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, round( ( 1 - ( value / maxValue ) ) * GRAPH_HEIGHT ) );
+
+		}
+
+	};
+
+};
+
+export { Stats as default };