demolishedtexture

demolishedTexture

Generate procedural textures in GLSL-Shader way or use plain vanilla Canvas API's to create your textures.

At https://magnusthor.github.io/demolishedTexture/editor/ you can find a tiny editor that allows you to fiddle with demolishedTexture.

Install using NPM

npm install demolishedtexture

Documentation

Brief documentation of demolishedTexture. More to come thou.

Create a texture using TextureBase

Like in a "shader" the generator calles the "callback" function (fn) provided to the generator by createTexture(w,h,fn) or render(fn) for each pixel (x,y) of your texture. The callback fn must have the following signature (pixel, x, y, w, h) where the arguments are as follows, it must return an Array of RGB(a)

fn(pixel:Array, x:number, y:numer, w:number, h:number,v:Array):Array<number> 

pixel is red, green and blue RGB channel for the current pixel (x,y) x,y is the current coordinate of the pixel. w,h is the with and hight of the texture. v Vector coorinate i.e -1,-1,0 for the current pixel

The function (fn) is inherited (bound) the the TextureBase descibed above, there you can find functions such as PerlinNoise ( noise)

Example ( Javascript )

var instance = DemolishedTextureGen.createTexture(512, 512, function (pixel, x, y, w, h,v) {
    
    var n = this.noise(x / 45, y / 120, .89);
    n = Math.cos(n * 15);
    r = Math.round(n * 255);
    b = 255 - r;
    g = r - 255;

    return [r, g, b];
    
});

Create a texture using Canvas API's

In addition to the procedual textures you can use the HTML5 Canvas JavaScript API's to render textures / images.

fn(ctx,w,h):Array<number>

ctx is the CanvasRenderingContext2D to use for drawinig operations. w is the width of the texture. h is the width of the texture.

var instance = DemolishedCanvasTextureGen.createTexture(512, 512, (ctx, w, h) => {
            ctx.save();
            ctx.fillStyle = "#fff";
            let dx = w / 2;
            let dy = h / 2;
            ctx.strokeStyle = "#fff";
            ctx.lineWidth = 10;
            var sx = Math.random() * 2;
            var sy = Math.random() * 2;
            ctx.translate(sx, sy);
            ctx.strokeRect(20, 20, 512 - 40, 512 - 40);
            ctx.stroke();
            ctx.font = "120px 'Arial'";
            ctx.fillText("SUPER", 40, 220, w);
            ctx.font = "bold 154px 'Arial'";
            ctx.fillText("HANNA", 35, 370, w);
            ctx.restore();
    
            return ctx;    
});
    

Get the rendered texture as Base64

toBase64():string

Get the rendered texture as a Blob

toBlob( (b:Blob) => {}): void

Links

https://magnusthor.github.io/demolishedTexture/example/index.html

https://magnusthor.github.io/demolishedTexture/editor/index.html