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pa7 / heatmap.js

🔥 JavaScript Library for HTML5 canvas based heatmaps
https://www.patrick-wied.at/static/heatmapjs/
MIT License
6.22k stars 1.33k forks source link

VML Support / #64

Closed Danielku15 closed 7 years ago

Danielku15 commented 11 years ago

Currently you are using a canvas layer for rendering the heatmap. For old-browser support (IE 6-8) it would be awesome to have a VML fallback. You might know excanvas (http://code.google.com/p/explorercanvas/).

It shouldn't be that much work to create an abstraction layer for different drawing engines. As far as I know you are using filled rects and arcs for generating the heatmap. Using such an abstraction layer even an SVG drawing should be possible.

pa7 commented 11 years ago

This will probably be part of a v2 within "redesigned rendering". Although for now I just wanted to support canvas2d and webGL first in the v2. But I will think about it. Currently I'm using arcs to create a shadow that will be colored with pixel by pixel manipulation.

pa7 commented 7 years ago

As nobody else expressed interest in a VML renderer I will close this issue for now