Concave object collision?

Hi,

I see that it is easier on convex collision. But may i know how concave collision can be done?

Please see this image

[attachment=0:7ju2clk1][/attachment:7ju2clk1]

So when a round ball is placed on left or right corner of concave object, the ball will come to center,

I learned that Chipmunk can do it. But I know experts are here to give me right reply,

Thank you,

The above image is concave not convex ( unless you rotate it 180 degrees). The only real way to do what you ask is using the physics behavior.

spongehammer Sorry, I edited the post now.

vijayrajesh

No need to apologise , mistakes happen. Have you tried the physics behavior ?

Hi,

I came to a concept like this

Please watch youtube video with id vBv8nuEf9bw

screenshot,

[attachment=0:22mbzjop][/attachment:22mbzjop]

(I am not allowed to add url here)

The wine glass border is surrounded with about 10 hidden sprites. They work as borders of glass. But now, I see the issue that, suppose if I want to rotate the wine glass, I need to group all those sprites.

Is there any way to group rotate sprites in runtime?

Thank you,

You could pin them all to a common sprite, then just rotate that instead.

spongehammer that is a great idea. Thanks I will try now