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Added user interaction #10

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Added user interaction #10

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52 changes: 50 additions & 2 deletions 02 - Rotating Cube/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,53 @@ var fragmentShaderText =
'}'
].join('\n');

var angle = 0;
var manualPerformance = 0.01;
var flagAnimation = true;

var stopAnimation = function (){
flagAnimation = false;
manualPerformance = performance.now() / 1000;
}

var playAnimation = function (){
flagAnimation = true;
}

var rotateRight = function () {
if (!flagAnimation){
manualPerformance += 0.04;
angle = manualPerformance / 6 * 2 * Math.PI;
} else {
flagAnimation = false;
manualPerformance = performance.now() / 1000;
}
}

var rotateLeft = function () {
if(!flagAnimation){
manualPerformance -= 0.04;
angle = manualPerformance / 6 * 2 * Math.PI;
} else {
flagAnimation = false;
manualPerformance = performance.now() / 1000;
}
}

var pressKey = function (key){

var tecla = key.which;

if(tecla == 97){
rotateLeft();
}

if(tecla == 100){
rotateRight();
}

}

var InitDemo = function () {
console.log('This is working');

Expand Down Expand Up @@ -209,9 +256,10 @@ var InitDemo = function () {
//
var identityMatrix = new Float32Array(16);
mat4.identity(identityMatrix);
var angle = 0;
angle = 0;
var loop = function () {
angle = performance.now() / 1000 / 6 * 2 * Math.PI;
if (flagAnimation)
angle = performance.now() / 1000 / 6 * 2 * Math.PI;
mat4.rotate(yRotationMatrix, identityMatrix, angle, [0, 1, 0]);
mat4.rotate(xRotationMatrix, identityMatrix, angle / 4, [1, 0, 0]);
mat4.mul(worldMatrix, yRotationMatrix, xRotationMatrix);
Expand Down
6 changes: 5 additions & 1 deletion 02 - Rotating Cube/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,17 @@
<head>
<title>WebGL - Rotating Cube</title>
</head>
<body onload="InitDemo();">
<body onload="InitDemo();" onkeypress="pressKey(event);">
<canvas id="game-surface" width="800" height="600">
Your browser does not support HTML5
</canvas>
<br />
<i>Demo is above this text</i>
<script src="gl-matrix.js"></script>
<script src="app.js"></script>
<button onclick="playAnimation();">Play Animation</button>
<button onclick="stopAnimation();">Stop Animation</button>
<button onclick="rotateLeft();">Rotate Left (A)</button>
<button onclick="rotateRight();">Rotate Right (D)</button>
</body>
</html>