Hi Peter,
This is the current collision behavior that we implement.
Since we must get a collision entry event in order to get a collision
exit event form the same target. Also in current implementation
WakeupOnCollisionEntry will not get another event until it
exit from collison state.
Yes it would be nice if it can detect multiple collision
from other objects as mention in your description.
However this will not address in v1.3 release.
Thanks.
- Kelvin
-------------
Java 3D Team
Sun Microsystems Inc.
>Date: Thu, 02 May 2002 10:27:47 +0200
>From: "Schäfer, Peter" <[EMAIL PROTECTED]>
>Subject: [JAVA3D] can't detect multiple collisions
>To: [EMAIL PROTECTED]
>MIME-version: 1.0
>Content-transfer-encoding: quoted-printable
>Delivered-to: [EMAIL PROTECTED]
>
>Hi there,
>
>I have a problem with collision detection. If an objects collides with a
>series of other objects,
>only the first collision gets reported.
>For example:
>
> object X hits A --> WakeupOnCollisionEntry A
> hits B while still intersecting A --> nothing happens
> leaves A while still intersecting B --> nothing happens
> leaves B --> WakeupOnCollisionExit A
>
>what I was expecting is:
> Enter A
> Enter B
> Exit A
> Exit B
>
>is this a problem with Java3D (1.3 beta1), or have I made a mistake ?
>
>The behavior was set up with
>
> Shape3D x = pickedGroup.getShape();
> WakeupCriterion[] criteria = {
> WakeupOnElapsedFrames(0,false),
> WakeupOnAWTEvent(MouseEvent.MOUSE_RELEASED),
> WakeupOnCollisionEntry(x, WakeupOnCollisionEntry.USE_BOUNDS),
> WakeupOnCollisionExit(x, WakeupOnCollisionExit.USE_BOUNDS),
> };
>
> WakeupCondition wakeUpOnDrag = new WakeupOr(criteria);
> ...
> wakeupOn(wakeUpOnDrag);
>
>setCollidable(true) has been set for all relevant objects
>I also tried WakeupOnCollisionMovement() but again, only events for the
>first collision are reported
>
>any help is appreciated ...
>
>
>-- Peter Schäfer
>
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