Cutting objects

So i have an object with the physics behavior, and i want to split it into two physics objects,of the same type by drawing a line over it.I know how to make the line, i just cant figure out how to split the object correspondingly to the line.

Hers's a picture: dl.dropbox.com/u/52670878/cut.png

I suppose i have to use the canvas object somehow...

Any help or ideas on how to do this would be appreciated.Thanks in advance.

No one? Ah, well i guess i should be proud i discovered something that's impossible to do in construct...

It's partially doable, you can use the canvas plugin to draw the shapes but you wouldn't be able to use the physics behavior since you can't change the collision polygon a runtime.

An approach for the splitting of a polygon by a line mechanic is explained here:

http://stackoverflow.com/questions/3623703/how-can-i-split-a-polygon-by-a-line

http://en.wikipedia.org/wiki/Line-line_intersection

Thanks for replying rojohound but for those tutorials the problem is that i don't have lines intersecting, but an object and a line...

How can i use the canvas plugin to make two different objects? I don't see a way to load animation frame from canvas.

I missed the fact that this was in the Construct Classic section.

In CC here is a way to slice up an image into separate pieces:

http://dl.dropbox.com/u/5426011/examples10/sliceCanvas.cap

It doesn't remove the issue of making it work with physics. Physics uses polygon collisions not pixel collisions, so the links I posted are still relevant.

To use physics the approach I would take is use some python working with pyBox2d or pymunk.

That's an excellent example(idea) rojohound,thank you very much. One last question: how can I load the canvas' frame into a sprite object frame?

I don't know python, so i'll try to use the custom movement behavior to recreate the physics behavior somehow, as a workaround for the collision masks.

You can copy the image of a Canvas to a Sprite with the ImageManipulator object. Specifically with the two actions "copy from sprite" and "copy to sprite". Even though it says sprite it will work for copying from a canvas.

Aah ok.Thanks again for the help rojohound, you're a pro.