My goal is to prevent overlapping of two or more rectangles inside my FabricJS canvas.  Imagine two rectangles having info on position and size and you can drag and drop any rectangle inside the canvas.  If rectangle A gets close enough to rectangle...
I have a canvas drawn in Fabric.js that i am adding a group of rectangles to, i want to limit the edges of those rectangles as a group to not go outside a certain area.  Imagine making a stripy t-shirt, the stripes are make by using a series of recta...
I have been trying to keep an object (constructed in fabric js over a canvas) inside the boundaries at all the times. It has been achieved at moving and rotating it. I took help from Move object within canvas boundary limit for achieving this. But wh...
I am using fabricjs to render images but the images that I have are very large near to 5 MB or even more. For example I have a image having 2130*1800 (width*height) and my canvas width and height ,that I can afford at max is 90% of window.width*90% o...
I'm trying to add undo/redo functionality to my Fabric.js canvas. My idea is to have a counter which counts canvas modifications (right now it counts the addition of objects). I have a state array, which pushes the whole canvas as JSON to my arra...
Suppose I have an image in a fabricjs canvas. I can easily calculate the coordinates of the corners based on the image's top & left values, and its size.    How can I do so when the image is rotated by any degree?  Example:    EDIT: Preferabl...
Goal: To center an object (horizontally and vertically) inside another object (rectangle or group) on canvas via Fabric.js or via Javascript which keeps the original object aspect ratio the same, but also not exceed the parent object width/height pro...
I want to save canvas as PNG, without opening it in a new window as base64-encoded image.  I used this code:  jQuery("#btnPreview").click(function(){         if (!fabric.Canvas.supports('toDataURL')) {             alert('Sorry, yo...
I understand Fabric.js have built-in support on drag-n-drop within the same canvas.  How can we make it work for multiple canvas?  Or from an non-canvas html element e.g. an image from a table?...
how to get rgb values of image in fabric.js on mouse move. I used getFill() method of image object, but it is returning (0,0,0). Please help me...

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