File size: 3,514 Bytes
b797337 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | 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 default Stats;
|