CODEWITHSUNDEEP
actionscript-3flashmovieclip
Jerry B
Jerry B

Reputation: 135

How to extract the shape of MovieClip?

We have a flash application that we are planning on converting to javascript. It's a pretty simple map application with an image as the background and a bunch of simple polygon movie clips that represent destinations on the map.

I would like to iterate through each movie clip and extract the shape into an array of x,y points to redraw the polygon using an external javascript function.

Is this possible with actionscript?

Upvotes: 0

Views: 1209

Answers (3)

Strille
Strille

Reputation: 5781

Flash Player 11.6 introduced readGraphicsData() which does exactly what you ask for.

If you need to target an earlier version, then there's no simple way to read shape coordinates from a display object with ActionScript at runtime unfortunately.

If you just want to extract the shape coordinates once someone has written a jsfl script for Flash CS3 which looks like it might be able to help you out.

Upvotes: 0

George Profenza
George Profenza

Reputation: 51837

If you want to export the shape coordinates at author time, you can do try the JSFL script recommented by @strille or this one or export transparent images (if that's not too limiting for your application).

If you need to export the shapes at runtime, you can use the awesome as3swf library to decompile the swf and export the shapes. Have a look at the ShapeExport wiki as there are couple of handy exporters for js like JSCanvasShapeExporter and the more generic JSONShapeExporter

Upvotes: 2

cleong
cleong

Reputation: 7606

There are ways you can read the coordinates from an SWF. For instance, I've written a parser in PHP (link). Getting the data doesn't help though, as it turns out. The Flash painting model is different enough from the HTML5 one enough to make transfer exceeding difficult. The main obstacle I discovered is that in Flash, a path can be filled with two fill styles: one for area enclosed by the path, the other for enclosed area considered to be "outside" by the even-odd rule (e.g. the pentagon in the middle of a star). Since the HTML5 canvas let you specify only one fill style, you can't redraw shapes from Flash accurately. I was trying to create a tool that extract shapes as SVG and was getting a lot of gap and holes in the result.

Upvotes: 0

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