Looking in MotionX now...
Where I see _checkForCollision ... logically something like _checkForSnap
would go nicely. And I see some other things I hadn't considered, such as
direction/angle of snap. But would all changes go into motionx.js, and no
api/ext/dragsnap.js?
Leif
----- Original Message -----
From: "Raymond Irving" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, February 13, 2003 12:37 PM
Subject: Re: [Dynapi-Dev] Drag & Snap
>
> --- Leif W <[EMAIL PROTECTED]> wrote:
> > Ok, so where do I start adding / modifying code to
> > add some features like
> > Drag & Snap. I'm thinking somewhere in the onmove
> > event.
>
> IMO I would recommend that the Snap functions be
> placed in a file call dragsnap.js and be placed in the
> api/ext directory (since it's an extension to the
> dynalyer and mouse events). Use the ondragemove event
> or the onmove event (invoked by motionx)
>
> > I'll need to first make some decisions about
> > functionality. Do I add
> > attributes like (boolean) doSnap and (+t,+r,+b,+l)
> > snapBorder to the (either
> > static or dragged) dynlayer? Does the doSnap apply
> > to the stationary
> > (non-draggable and draggable) target objects, such
> > that the draggable object
> > (which is currently moving) will snap to anything
> > that is snappable? Or do
> > I only apply the doSnap to the currently moving
> > draggable layer, such that
> > it snaps to anything? Or maybe both target/source
> > layers need the draggable
> > boolean set?
>
> And the a _snapEnabled property to all snap enabled
> layers by using either a doSnap(), setSnap() or
> enableSnap() function to the DynLayer.prototype
> object. For flexiblity it's best to make both non-drag
> and drag enabled layers snap-able. This way a use can
> create static objects that are snap enabled. For snap
> to take place the _snapEnabled property must be set to
> true for the colliding layers.
>
> > Second, how about the boundary implementation?
> > Thinking something like the
> > collision detection might come in handy. But how to
> > set a wider boundary?
> > Do I put the snappable layer inside an invisible
> > "wrap" layer which is going
> > to be wider, and do collision detection on that? Or
> > do I simply copy and
> > modify the collision code and rename it to some
> > snappable code, and do
> > collision detection on boundaries?
>
> For flexibility it would be best to modify the
> motionx.js file so that it supports a boundary
> feature. For exmaple:
>
> setCollideOffset(1) or
> setCollideOffset({top:3,bottom:5,left:6,right:10})
>
> I was thinking about setBoundrary but that might not
> be unique as other DynLayer extensions might use it in
> the future.
>
> The above would offer maximum flexibility to the user.
> The user can enter either an interger value or pass an
> object with top, bottom,right,left boundrary values.
>
> > Third, which files should I start looking in? I've
> > got a copy of dynapi3x
> > and have been mucking around with it.
>
> You could the dragsnap.js modify the motionx.js (if
> you're going to use it). Another file to look at would
> be the dragdrop.js found in api/ext.
>
>
> PS. I think this library will be of great benefit to
> many users. Keep up the good work.
>
> Best regards,
>
>
> --
> Raymond Irving
>
>
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Shopping - Send Flowers for Valentine's Day
> http://shopping.yahoo.com
>
>
> -------------------------------------------------------
> This SF.NET email is sponsored by: FREE SSL Guide from Thawte
> are you planning your Web Server Security? Click here to get a FREE
> Thawte SSL guide and find the answers to all your SSL security issues.
> http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en
> _______________________________________________
> Dynapi-Dev mailing list
> [EMAIL PROTECTED]
> http://www.mail-archive.com/[email protected]/
-------------------------------------------------------
This SF.NET email is sponsored by: FREE SSL Guide from Thawte
are you planning your Web Server Security? Click here to get a FREE
Thawte SSL guide and find the answers to all your SSL security issues.
http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en
_______________________________________________
Dynapi-Dev mailing list
[EMAIL PROTECTED]
http://www.mail-archive.com/[email protected]/
