Background color set to black in Three.js canvas

Question

Background color set to black in Three.js canvas

I tried creating a basic scene with three.js but I'm puzzled as to why the canvas background is showing up completely black.

<html>
<head>
    <title>My first Three.js app</title>
    <style>
        body { margin: 0; }
        canvas { width: 100%; height: 100%;background-color: white; }
    </style>
</head>
<body>
    <script src="Stereos/threejs/three.js"></script>
    <script>
        var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );

var renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
    </script>
  </body>
</html>

EDIT:

Check out the code at felpone.netsons.org

javascript three.js

Answer 1

Answer №1

The background color of the canvas is set dynamically through the use of

renderer.setClearColor (0xff0000, 1);

Answer 2

The background color of the canvas is set dynamically through the use of

renderer.setClearColor (0xff0000, 1);

Answer 3

Answer №2

To customize the background color using CSS, ensure that the "alpha" property of your WebGLRenderer is set to "true." This will allow you to have control over the background color.

As an example, I included the alpha option and set it to true in the renderer. Additionally, I specified the background-color property in the body style as well.

<html>
    <head>
        <title>My first Three.js app</title>
        <style>
            body { margin: 0; background-color: white; }
            canvas { width: 100%; height: 100%; background-color: white; }
        </style>
    </head>
    <body>
    <script src="Stereos/threejs/three.js"></script>
    <script>
        var scene = new THREE.Scene();
        var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );

        var renderer = new THREE.WebGLRenderer( {alpha: true} );
        renderer.setSize( window.innerWidth, window.innerHeight );
        document.body.appendChild( renderer.domElement );
    </script>
    </body>
</html>

Answer 4

To customize the background color using CSS, ensure that the "alpha" property of your WebGLRenderer is set to "true." This will allow you to have control over the background color.

As an example, I included the alpha option and set it to true in the renderer. Additionally, I specified the background-color property in the body style as well.

<html>
    <head>
        <title>My first Three.js app</title>
        <style>
            body { margin: 0; background-color: white; }
            canvas { width: 100%; height: 100%; background-color: white; }
        </style>
    </head>
    <body>
    <script src="Stereos/threejs/three.js"></script>
    <script>
        var scene = new THREE.Scene();
        var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );

        var renderer = new THREE.WebGLRenderer( {alpha: true} );
        renderer.setSize( window.innerWidth, window.innerHeight );
        document.body.appendChild( renderer.domElement );
    </script>
    </body>
</html>

Answer 5

Answer №3

It is recommended to add the background directly to the scene, whether it's a texture or a THREE.Color!

Starting from r78 versions, you can set the background color of your scene using the code snippet below:

var scene = new THREE.Scene();
scene.background = new THREE.Color( 0x000000 );

Check out the documentation for more details:

Scene.background

Answer 6

It is recommended to add the background directly to the scene, whether it's a texture or a THREE.Color!

Starting from r78 versions, you can set the background color of your scene using the code snippet below:

var scene = new THREE.Scene();
scene.background = new THREE.Color( 0x000000 );

Check out the documentation for more details:

Scene.background

Answer 7

Answer №4

You set up a scene, camera, and renderer, but don't forget the essential steps: giving something to render and actually rendering it.

Once you've finished your code, make sure to include:

var cube = new THREE.Mesh( 
    new THREE.CubeGeometry(1, 1, 1), 
    new THREE.MeshNormalMaterial() 
);
scene.add(cube);

camera.position.set(2, 2, 2);
camera.lookAt(cube.position);

renderer.render(scene, camera);

This will generate a cube at the origin (0,0,0) with dimensions of 1 unit; position the camera near the cube and focused on it; then instruct the renderer to display the cube.

Answer 8

You set up a scene, camera, and renderer, but don't forget the essential steps: giving something to render and actually rendering it.

Once you've finished your code, make sure to include:

var cube = new THREE.Mesh( 
    new THREE.CubeGeometry(1, 1, 1), 
    new THREE.MeshNormalMaterial() 
);
scene.add(cube);

camera.position.set(2, 2, 2);
camera.lookAt(cube.position);

renderer.render(scene, camera);

This will generate a cube at the origin (0,0,0) with dimensions of 1 unit; position the camera near the cube and focused on it; then instruct the renderer to display the cube.

Answer 9

Answer №5

To keep up with the latest version of ThreeJS (2019) -

Once you create your scene by using:

scene = new THREE.Scene();

You can then modify the "background" property of this instance and assign a hex color value like so:

scene.background = new THREE.Color(0xf5f5f5);

Answer 10

To keep up with the latest version of ThreeJS (2019) -

Once you create your scene by using:

scene = new THREE.Scene();

You can then modify the "background" property of this instance and assign a hex color value like so:

scene.background = new THREE.Color(0xf5f5f5);

Answer 11

Answer №6

In my opinion, @Jaume Sanchez provides the most accurate response. While the other answers contain relevant information, they may not fully address the specific concerns of someone new to threeJS. The var renderer variable simply points to your render target and does not actually draw anything. Additionally, without a camera in your scene, there is nothing for the renderer to display. For more comprehensive guidance on setting up a scene in threeJS, I recommend checking out this tutorial on creating a scene.

Answer 12

In my opinion, @Jaume Sanchez provides the most accurate response. While the other answers contain relevant information, they may not fully address the specific concerns of someone new to threeJS. The var renderer variable simply points to your render target and does not actually draw anything. Additionally, without a camera in your scene, there is nothing for the renderer to display. For more comprehensive guidance on setting up a scene in threeJS, I recommend checking out this tutorial on creating a scene.

Answer 13

Answer №7

You mentioned that you have experimented with a simple scene, but encountered a black screen. Upon reviewing your code, I noticed a crucial error.

It appears that you forgot to call the render method.

renderer.render(scene, camera);

In addition, it seems like you haven't added any Geometry (Mesh) to your threejs scene, which is fundamental.

This could be causing the issue of the black screen.

If your objective is to transform the black screen into a white one,

then you should set

 scene.background = new THREE.Color(0xffffff);

Answer 14

You mentioned that you have experimented with a simple scene, but encountered a black screen. Upon reviewing your code, I noticed a crucial error.

It appears that you forgot to call the render method.

renderer.render(scene, camera);

In addition, it seems like you haven't added any Geometry (Mesh) to your threejs scene, which is fundamental.

This could be causing the issue of the black screen.

If your objective is to transform the black screen into a white one,

then you should set

 scene.background = new THREE.Color(0xffffff);

Answer 15

Answer №8

If you encounter an issue where:

renderer.setClearColor(0xff0000, 1);

is not functioning properly, you can try the following solution:

const renderer = new THREE.WebGLRenderer();
renderer.domElement.className = "domElement";

Add a selector in your CSS file:

.domElement {
  background-color: red; /* choose any color */
}

Answer 16

If you encounter an issue where:

renderer.setClearColor(0xff0000, 1);

is not functioning properly, you can try the following solution:

const renderer = new THREE.WebGLRenderer();
renderer.domElement.className = "domElement";

Add a selector in your CSS file:

.domElement {
  background-color: red; /* choose any color */
}

Background color set to black in Three.js canvas

Answer №1

Answer №2

Answer №3

Check out the documentation for more details:

Answer №4

Answer №5

Answer №6

Answer №7

Answer №8

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