Box2d in cocos2d-js ,How to debugDraw??

[XESDog]

how to use b2debugDraw，the js-test.html model have not demonstrate

[zhaijialong]

add this code to update function

var debugDraw = new Box2D.Dynamics.b2DebugDraw();
debugDraw.SetSprite(document.getElementById("test").getContext("2d")); // test is the id of another canvas which debugdraw works on
debugDraw.SetDrawScale(30.0);
debugDraw.SetFillAlpha(0.3);
debugDraw.SetLineThickness(1.0);
debugDraw.SetFlags(Box2D.Dynamics.b2DebugDraw.e_shapeBit | Box2D.Dynamics.b2DebugDraw.e_jointBit);
this.world.SetDebugDraw(debugDraw);
this.world.DrawDebugData();

and box2d use a different coordinate frame than cocos, so you need to do transform 180 degrees.
add this to the style of debug canvas

-webkit-transform:rotate(180deg); //and some other browsers' style

[XESDog]

oh!!,thanks!

[adnanafzal565]

Can you send me complete code including the test canvas ?
Thank you.