I need to process pixeldata from a 1000x1000px *.bmp image (~1MiB) in javascript At the moment i am a bit stuck, because the page freezes when i try to dump the data to the console. the important code so far:    var img = new Image(); img.src = '...
In html5, when you draw to a canvas using putImageData(), if some of the pixels you are drawing are transparent (or semi-transparent), how do you keep old pixels in the canvas unaffected?  example:  var imgData = context.createImageData(30,30); for(v...
I'm animating a sprite on a pixel grid. I have a few options, with pros and cons for each. I have a fair amount of javascript experience (six years), but none with this kind of thing. The problem is I don't know how expensive each option will...
Is there a way to read transparent pixels from a picture using javascript?   I think, that it could be something similar to what PNG fixes does for IE (reading transparent pixels and applying some stuff, lol). But yes, for every browser..  Ah, would...
I don't know how to make this algorithm in JavaScript/Node.js that converts bitmaps into svg paths pixel by pixel:     // input 0 0 0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0 0 0  0 0 1 1 1 1 1 1 0 0  0 0 1 1 1 1 1 1 0 0  0 1 1 1 0 0 1 1 1 0  0 1 1 1 0 0 1...
I would like to create an image that consists of 128x128 pixles in two colors (e.g. orange and blue) using javascript. The pixels should be arranged randomly and I would like to be able to vary the proportion of the two colors (e.g. state sth like &#...
Like this (it's not accurate)   How can I change the Bresenham line algorithm to keep cycling into itself and create this effect: (Drawning not accurate)  I have the basic line with 2 coordinates:  drawBresenhamLine = function (x0, y0, x1, y1) {...
I am writing a program to convert three equations into an image by using them to generate RGB values for each pixel on a canvas. This is the code of my first test:    const canvas = document.getElementById("game") const context = canvas.getCo...
I'm working on firing tracking pixel code when a form is submitted and redirects the user to a PDF document. Right now I'm not seeing my conversion metrics go up and when I land on the PDF file I getting some form of an error in Safari, the n...
So we have a partner that sells products on their site. We want to keep track of the number of items a user purchases coming from our site.  For example, We refer a user to buy a certain product from our partner site. The user clicks on the link and...

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