Layer rendering can be manipulated in prerender and postrender event listeners.
These listeners get an event with a reference to the Canvas rendering context.
In this example, the postrender listener applies a filter to the image data.
-tags: "filter, image manipulation"
+tags: "filter, image manipulation, maptiler"
cloak:
- - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
- value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+ - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+ value: Get your own API key at https://www.maptiler.com/cloud/
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