width different from 100% for div container
Question
I have a simple WebGL code which displays a 3D graph. It works well but I would like to set a value for the width different from 100%; ie I would like to put the webGL animation in a small box.
Below my code; I tried to put the WebGL into a 500px box with CSS "height" and "width" but it doesn't work : the animation still takes 100% of width :
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - trackball controls</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #000;
font-family:Monospace;
font-size:13px;
text-align:center;
font-weight: bold;
background-color: #fff;
margin: 0px;
overflow: hidden;
}
.container {
width: 500px;
height: 500px;
}
</style>
</head>
<body>
<center><div id="container"></div></center>
<script src="three.js/build/three.min.js"></script>
<script src="three.js/examples/js/controls/TrackballControls.js"></script>
<script src="three.js/examples/js/Detector.js"></script>
<script src="three.js/examples/js/libs/stats.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var camera, controls, scene, renderer;
var cross;
init();
animate();
function init() {
...
}
function onWindowResize() {
...
}
function animate() {
requestAnimationFrame( animate );
controls.update();
// For displaying
render();
}
function render() {
renderer.render( scene, camera );
stats.update();
}
</script>
</body>
</html>
How to circumvent this issue ?
Thanks
UPDATE 1 :
Ok sorry for the class-id confusion.
Concerning the div container, I am using appenChild in WebGL code to add a renderer domElement .
With the following code :
<html lang="en">
<head>
<title>three.js webgl - trackball controls</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #000;
font-family:Monospace;
font-size:13px;
text-align:center;
font-weight: bold;
background-color: #fff;
margin: 0px;
overflow: hidden;
}
#container {
width: 300px;
height: 300px;
margin-left: auto;
margin-right: auto;
}
</style>
</head>
<body>
<div id="container"></div>
<script src="three.js/build/three.min.js"></script>
<script src="three.js/examples/js/controls/TrackballControls.js"></script>
<script src="three.js/examples/js/Detector.js"></script>
<script src="three.js/examples/js/libs/stats.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
...
</script>
</body>
</html>
I don't get a centered box with WebGL animation. The WebGL window is shifted on the right like this (width is set to 300 px) but it is not centered like I would.
PS: margin-left:auto and margin-right:auto don't seem to work for centering.
Thanks.
2 answers
solution1
1 2015-08-01 04:04:20
There are multiple issues with your html.
your container is defined in your css as a class, you have it in your html as an id
you have nothing in the div container
<center></center>is deprecated Usemargin-left:auto; margin:right:auto;margin-left:auto; margin:right:auto;in your css.
Give that another go and see how you get on
solution2
1 2015-08-01 20:09:44
1)
The canvas is still 100% of the page width because you probably have that set up in your onWindowResize function. In order for your canvas to be a certain size, you need to tell three.js that, not CSS.
To highlight, these couple lines are dependent on width and height:
camera = new THREE.PerspectiveCamera(50, width / height, 1, 10000);
renderer.setSize(width, height);
2)
You want to set margin-left: auto; margin-right: auto margin-left: auto; margin-right: auto to the canvas if your container is truly a "container." Also, since canvas' display is by default inline , you need to use display: block .
See it in action: http://jsfiddle.net/60uzdyss/
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