[flexcoders] bitmap hitTest method
Hi,
my question is about basically pixel level collision.
lets say I have two Image display objects and I get it's bitmap Data
respectively for the first one and the 2nd one.
Below is the code
--
var shipBmpData:BitmapData = new
BitmapData(shipBox.width,shipBox.height,false,0);
shipBmpData.draw(shipBox);
var hitImageBmpData:BitmapData = new
BitmapData(shipBoxHit.width,shipBoxHit.height,false,0);
hitImageBmpData.draw(shipBoxHit);
if (hitImageBmpData.hitTest(new
Point(shipBoxHit.x,shipBoxHit.y),255,shipBmpData,new
Point(shipBox.x,shipBox.y),255))
{
Alert.show(quot;final hitquot;);
}
--
I cannot understand why I can't exact pixel level detection. Basically
one of them is moving towards the other and when it is over it, it
should detect collision.
Can anyone give the correct way? I want to get a collision at pixel level.
Thanks in advance!
[flexcoders] Re: bitmap hitTest method
Hi Tom Chiverton, Actually it took me a while to understand that hitTestObject doesn't work for me because both DisplayObjects may be rotated and hitTestObject takes into consideration transparent pixels. What do you think about pixel collision? --- In flexcoders@yahoogroups.com, Tom Chiverton [EMAIL PROTECTED] wrote: On Wednesday 20 Feb 2008, n3moncic wrote: one of them is moving towards the other and when it is over it, it should detect collision. You don't need hitTest() here, do you, because you know where they both are and their size... ? -- Tom Chiverton Helping to paradigmatically lead industry-wide developments on: http://thefalken.livejournal.com This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at Halliwells LLP, 3 Hardman Square, Spinningfields, Manchester, M3 3EB. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by The Solicitors Regulation Authority. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 2500. For more information about Halliwells LLP visit www.halliwells.com.
[flexcoders] Re: bitmap hitTest method
Hi again, but getObjectsUnderPoint() wouldn't that mean under a particular x y point? It wouldn't be that accurate since a DisplayObject has many points. What do you think? It thought hitTest method would mean pixel level detection. Thanks! --- In flexcoders@yahoogroups.com, Tom Chiverton [EMAIL PROTECTED] wrote: On Wednesday 20 Feb 2008, n3moncic wrote: Actually it took me a while to understand that hitTestObject doesn't work for me because both DisplayObjects may be rotated and hitTestObject takes into consideration transparent pixels. Ahh. getObjectsUnderPoint() ? -- Tom Chiverton Helping to dramatically develop B2B e-business on: http://thefalken.livejournal.com This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at Halliwells LLP, 3 Hardman Square, Spinningfields, Manchester, M3 3EB. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by The Solicitors Regulation Authority. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 2500. For more information about Halliwells LLP visit www.halliwells.com.
[flexcoders] Re: bitmap hitTest method
Thanks very much, I will take it a look. --- In flexcoders@yahoogroups.com, Daniel Freiman [EMAIL PROTECTED] wrote: I don't have time to follow all the links but it looks like this post might get you to the solution: http://troygilbert.com/category/game-dev/ - Dan Freiman On Wed, Feb 20, 2008 at 10:01 AM, n3moncic [EMAIL PROTECTED] wrote: Hi again, but getObjectsUnderPoint() wouldn't that mean under a particular x y point? It wouldn't be that accurate since a DisplayObject has many points. What do you think? It thought hitTest method would mean pixel level detection. Thanks! --- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com, Tom Chiverton tom.chiverton@ wrote: On Wednesday 20 Feb 2008, n3moncic wrote: Actually it took me a while to understand that hitTestObject doesn't work for me because both DisplayObjects may be rotated and hitTestObject takes into consideration transparent pixels. Ahh. getObjectsUnderPoint() ? -- Tom Chiverton Helping to dramatically develop B2B e-business on: http://thefalken.livejournal.com This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at Halliwells LLP, 3 Hardman Square, Spinningfields, Manchester, M3 3EB. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by The Solicitors Regulation Authority. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 2500. For more information about Halliwells LLP visit www.halliwells.com.
