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README.md

threex.dynamictexture

threex.dynamictexture is a threex game extension for three.js. It provides an easy way to handle dynamically generated texture. Inspiration came from the excelent babylon.js which got BABYLON.DynamicTexture. It is mainly used to write text in texture. Say you got a character which says something, you may want to put that in a texture and display that above your character. threex.dynamictexture will make it easy for you.

Show Don't Tell

A Screenshot

screenshot

How To Install It

You can install it manually or with bower. for the manual version, first include threex.dynamictexture.js with the usual

<script src='threex.dynamictexture.js'></script>

or with bower you type the following to install the package.

bower install threex.dynamictexture

then you add that in your html

<script src="bower_components/threex.dynamictexture/threex.dynamictexture.js"></script>

How To Use It ?

You instanciate the texture, say it is 512 pixel width, and 512 pixel high.

var dynamicTexture	= new THREEx.DynamicTexture(512,512)
  • dynamicTexture.canvas the underlying canvas
  • dynamicTexture.context the context of the underlying canvas
  • dynamicTexture.texture the THREE.Texture created

To use the texture on a THREE.Material

var geometry	= new THREE.CubeGeometry( 1, 1, 1);
var material	= new THREE.MeshBasicMaterial({
	map	: dynamicTexture.texture
})
var mesh	= new THREE.Mesh( geometry, material );
scene.add( mesh );

When you update a texture be sure to do

dynamicTexture.texture.needsUpdate	= true

Helpers Functions

Some helpers functions are provided to draw in this canvas.

To clear the underlying canvas

dynamicTexture.clear();

To Draw a Text to draw a text

dynamicTexture.drawText('Hello', 32, 256, 'red')

To Draw a Image to draw an image, build an Image element and call this function. the arguments are the same as the official function

var image  = document.createElement('img')
image.src  = 'image.jpg'
dynamicTexture.drawBackground(image, 0, 0)

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three.js helper to handle dynamically generated texture.

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