dpng
Easily create image files with Deno
This is a simple library for Deno to create PNG (and other image types in the feature) files.
Usage
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//create a PNG file const png = new PNGImage(512, 512) //generating a color to use in setPixel const red = png.createRGBColor({ r: 255, g: 0, b: 0, a: 1 }) //setting one pixel png.setPixel(10, 10, red) //get the base64 encoded image const base64String = png.getBase64() //let's save the image Deno.writeFileSync('./test/img/test.png', png.getBuffer()) |
Functions
setPixel (x: number, y: number, color: number): void
Modifying a pixel
index (x: number, y: number): number
Getting the index of a pixel
getBuffer (): Uint8Array
Get the buffer (Uint8Array) of the image file
This can be used to save the image later, using Deno.writeFileSync
getBase64 (): string
Get the base64 encoded string of the created image
getDataURL (): string
Get the base64 encoded string of the created image with a data url, so you can utilize it inside an img tag in html, using the src attribute
createRGBColor (color: RGB): number
Create a valid RGB (rgba) color that you can use with setPixel
getPixel (x: number, y: number): number
Get the color of a pixel
drawLine (x: number, y: number, width: number, height: number, color: number): void
Draw a line inside the image
drawRect (x1: number, y1: number, x2: number, y2: number, color: number): void
Draw a rectangle inside the image
