Read pixel from Sprite?

Haxe
#1

From the graphics of a sprite, I need to read pixel color from sprite.mouseX, sprite.mouseY, I could not find getPixel of graphics in docs, how would I achieve this?

#2

Pretty sure you’ll have to use BitmapData.draw().

#3

I tried BitmapData.draw() , but how would I draw the shape when its pixels are on negative coordinate?
I’ve found that it will work fine when top-left pixel on shape graphics is on zero, zero

Any idea?

#4 
var matrix:Matrix = new Matrix();
matrix.translate(10, 10);
bitmapData.draw(sprite, matrix);

This will move the image 10 pixels right and 10 pixels down before drawing it.

#5

You can also use getBounds to get the rectangle for an object if you don’t know it already

#6

Right. If you want to draw the entire sprite, you’d do this:

var spriteBounds:Rectangle = sprite.getBounds(sprite);
var matrix:Matrix = new Matrix();
matrix.translate(-spriteBounds.x, -spriteBounds.y);

var bitmapData:BitmapData = new BitmapData(
    Math.ceil(sprite.width), Math.ceil(sprite.height),
    true, 0x00000000);
bitmapData.draw(sprite, matrix);
#7

Awesome, thank you, by the way, I feel as I am competing with time, to finish converting my app to html5 before chrome drops the default support of adobe flash! that’s very close, I think this December… wish me luck!