In an earlier post I covered how to rotate a shape around any point on the canvas without using offset. In this post I’ll look at how to rotate and scale a rectangle so that it entirely covers the space it occupied before rotation. This is useful if you ever have to rotate an imageContinue reading “Konva – Rotating a rectangle to cover another”
Used to using CSS selectors to work on the HTML DOM and wondering if there is anything similar in Konva? Here’s your answer!
The official Konva demo for “Zoom relative to a pointer” applies the zoom via a constant factor – I have an alternative suggestion.
Putting a grid over a Konva diagram is a common use case so I thought I would explore some of the options and explain a little about what goes on when zooming the Stage.
In part 2 of my hacking a way to synchronise HTML5 canvases across browser windows, I’m taking the results from part 1 and making them work between browser windows via communications lib PeerJS.
A few thoughts for folks who might be new to the support role. Acknowledge early, be straight & factual, and sign your work.
Boss to developer at 5pm Friday: “That proof-of-concept you knocked up last week for the sales team web dashboard ? We’ve promised the full-blown version to the users by next week – you’re good with that, right?”
When you start zooming with Konva you pretty quickly get frustrated about how to zoom relative to the mouse position and not the top-left corner of the stage. Here’s how to do that.
The Konva group is a bit hard to pin-down, almost a normal shape but not quite. Its super-powers can be a bit challenging though once you understand a few fundamentals its got your back. Lets dive in…