openglobus

Class: TextureAtlas

TextureAtlas

Texture atlas stores images in one texture. Each image has its own atlas texture coordinates.

new TextureAtlas(width, height)

og/utils/TextureAtlas.js, line 14
Name Type Description
width number optional Texture atlas width, if it hasn't 1024 default.
height number optional Texture atlas height, if it hasn't 1024 default..

Members

canvascanvas

Atlas canvas.

nodesArray.<utils.TextureAtlasNode>

Atlas nodes where input images store. It can be access by image.__nodeIndex.

texture

Created gl texture.

Methods

addImage(image, fastInsert){utils.TextureAtlasNode}

og/utils/TextureAtlas.js, line 99
Adds image to the atlas and returns creted node with texture coordinates of the stored image.
Name Type Description
image Object Input javascript image object.
fastInsert boolean optional If it's true atlas doesnt restore all images again and store image in the curent atlas sheme.
Returns:
Type Description
utils.TextureAtlasNode -

assignHandler(handler)

og/utils/TextureAtlas.js, line 75
Sets openglobus gl handler that creates gl texture.
Name Type Description
handler Handler WebGL handler.

clearCanvas()

og/utils/TextureAtlas.js, line 66
Clear atlas with black.

createTexture()

og/utils/TextureAtlas.js, line 183
Creates atlas gl texture.

getCanvas(){Object}

og/utils/TextureAtlas.js, line 58
Returns canvas object.
Returns:
Type Description
Object -

getDiagonal(image){number}

og/utils/TextureAtlas.js, line 85
Returns image diagonal size.
Name Type Description
image Object JavaSript image object.
Returns:
Type Description
number -

getImage(){Object}

og/utils/TextureAtlas.js, line 49
Returns atlas javascript image object.
Returns:
Type Description
Object -

loadImage(src, success)

og/utils/TextureAtlas.js, line 206
Asynchronous function that loads and creates image to the image cache, and call success callback when it's done.
Name Type Description
src string Image object src string.
success Object~successCallback The callback that handles the image loads done.