KonvaJS,Konva 是一个 基于 Canvas 开发的 2d js 框架库, 它可以轻松的实现桌面应用和移动应用中的图形交互交互效果. Konva 可以高效的实现动画, 变换, 节点嵌套, 局部操作, 滤镜, 缓存, 事件等功能, 不仅仅适用于桌面与移动开发, 还有更为广泛的应用. Technical Consultancy from Goodboy, the creators of PixiJS Founder, Mat Groves can help you get the most out of PixiJS whether it be optimisation of an existing project or consultancy on best practice and coding efficiency. Fractal Drawing on Aurora File shprndwk.htm is OK JPG Filter SVG File dbtnsvg.html is OK Firework Fountain File frkftn.html is OK Fractal 碎型產生器File shprwk.html is OK Brightness Color Table by JS only File jscolor.htm is OK No Touch Demo/ Mouse move to Draw File findoff.html is OK Clip-path Filter Star File strshca.html is OK
Jan 08, 2020 · Konva framework is on top of canvas and React is on top of Konva. Depending on the use case this approach can be slow. The purpose of react-konva is to reduce the complexity of the application and use well-known declarative way for drawing on canvas.
Problems with back to the futureDec 15, 2017 · You can use Konva to detect mouseup, mousedown, mouseenter, mouseleave, mouseover, mousemove, click, and dblclick. Additionally, Konva allows you to detect wheel, dragstart, dragmove, and dragend events. Here is an example that detects mousedown and mouseleave events on a regular polygon (hexagon). Dec 14, 2017 · In the second tutorial of the series, you learned how to draw some basic shapes like rectangles, circles, and regular polygons using Konva. The third tutorial covered how you can use Konva to draw some more complex shapes like stars and rings as well as sprites on the canvas. Manipulating HTML5 Canvas Using Konva: Part … I'm trying to create polygons with an inner border in Konva. I found this example of doing this with globalCompositeOperation which works well in Konva, as long as there is only one shape. As soon as I try to add a second shape, this obviously doesn't work anymore and the first shape disappears.You should also be able to easily drawsome basic andcomplex shapes on the canvas using Konva. If you plan on using Konva to create some interactive app or games, learning how to bind events to different shapes on the stage is the next logical step. In this tutorial, you will learn how to bind events to any shape using Konva.