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Why I get false in the end?
show user profile  Hua*MuLan~
what i run in my listener:
$.transform.row2
[0,0,1]--result
($.transform.row2 == [0,0,1])
false--result why is false
Every day is a new day

MSN:qq343294964@hotmail.com

read 872 times
3/10/2009 1:00:44 PM (last edit: 3/10/2009 1:00:44 PM)
show user profile  Garp
edit: read too fast again... sorry

edit2: I get this:
$.transform
(matrix3 [1,0,0] [0,1,0] [0,0,1] [11.0644,-34.9758,-11.7837])
$.transform.row2
[0,1,0]
$.transform.row2 == [0,1,0]
true
I don't know why it doesn't work for you. (?)




read 857 times
3/10/2009 1:26:43 PM (last edit: 3/10/2009 1:37:05 PM)
show user profile  Dub.
thats odd - it works for me:

($.transform.row2 == [0,1,0])
true


read 840 times
3/10/2009 1:36:51 PM (last edit: 3/10/2009 1:36:51 PM)
show user profile  Hua*MuLan~
Well , I rotate my model with snap tools.My model's Y_axis is pointing straight up.
Every day is a new day

MSN:qq343294964@hotmail.com

read 830 times
3/10/2009 1:43:49 PM (last edit: 3/10/2009 1:43:49 PM)
show user profile  advance-software
Maybe try a reset, drop down a cube at the origin, then inspect that - don't rotate anything - keep it simple to start with & see if you get what you expect.
read 826 times
3/10/2009 1:46:13 PM (last edit: 3/10/2009 1:47:19 PM)
show user profile  Hua*MuLan~
[0,0,1] was also good for me , but it's extreme odd,when I rotate it.
and I need ratate it ,for this my new way to check if Y_axis is pointing straight up.
I'd like someone try to rotate it use snap tools to make sure the Y_axis is pointing straight up.and
see if it's works well in your machine
Every day is a new day

MSN:qq343294964@hotmail.com

read 812 times
3/10/2009 1:56:16 PM (last edit: 3/10/2009 1:56:16 PM)
show user profile  Dub.
just take the dot product between the actual up axis and the object up axis. if it's less than a threshold then you're good.

It's probably a precision thing.


read 806 times
3/10/2009 1:59:50 PM (last edit: 3/10/2009 1:59:50 PM)
show user profile  Hua*MuLan~
You mean internally that what I get is not [0,0,1] from the command $.transform.row2 but something like [0,0,0.00000001]? Am I right?
Every day is a new day

MSN:qq343294964@hotmail.com

read 803 times
3/10/2009 2:05:39 PM (last edit: 3/10/2009 2:07:42 PM)
show user profile  Dub.
exactly

It's probably more like 0.00001 though.

Try this:

((dot [0,1,0] $.transform.row2) > 0.9999)


read 800 times
3/10/2009 2:09:04 PM (last edit: 3/10/2009 2:11:21 PM)
show user profile  Hua*MuLan~
I think it should be:
((1 - dot [0,1,0] $.transform.row2) > 0.9999)
Every day is a new day

MSN:qq343294964@hotmail.com

read 787 times
3/10/2009 2:21:28 PM (last edit: 3/10/2009 2:26:16 PM)
show user profile  Dub.
hmmm that doesn't work for me.

The dot product of two vectors pointing the same way is 1.0


read 781 times
3/10/2009 2:26:52 PM (last edit: 3/10/2009 2:26:52 PM)
show user profile  Hua*MuLan~
really thanx , all of your guys .
Every day is a new day

MSN:qq343294964@hotmail.com

read 774 times
3/10/2009 2:34:57 PM (last edit: 3/10/2009 2:34:57 PM)
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