HTML Canvas: How to draw a flipped/mirrored image?

javascript html canvas flip mirror
Jem picture Jem · Nov 17, 2011 · Viewed 43.5k times · Source

I'm trying to flip/mirror an image as I paint it on an HTML canvas; I found a game tutorial showing a sprite sheet per direction a character has to face, but this doesn't seem quite right to me. Especially since each frame has a different size.

What would be the best technique to reach this goal?

I tried to call the setScale(-1, 1); on my canvas with no success. Maybe that isn't meant for this.

Thanks

Answer

Phrogz picture Phrogz · Nov 17, 2011

  1. You can do this by transforming the context with myContext.scale(-1,1) before drawing your image, however

  2. This is going to slow down your game. It's a better idea to have a separate, reversed sprite.

Related questions

How to clear the canvas for redrawing

After experimenting with composite operations and drawing images on the canvas I'm now trying to remove images and compositing. How do I do this? I need to clear the canvas for redrawing other images; this can go on for a …

Read More
Capture HTML Canvas as gif/jpg/png/pdf?

Is it possible to capture or print what's displayed in an html canvas as an image or pdf? I'd like to generate an image via canvas, and be able to generate a png from that image.

Read More
Using HTML5/Canvas/JavaScript to take in-browser screenshots

Google's "Report a Bug" or "Feedback Tool" lets you select an area of your browser window to create a screenshot that is submitted with your feedback about a bug. Screenshot by Jason Small, posted in a duplicate question. How are …

Read More