On 8 January 2014 19:54, Sean P. DeNigris <sean@clipperadams.com> wrote:

I'm sure this must be addressed somewhere, but searching the archives for
"morph local point" didn't produce anything helpful��

I have a PasteUpMorph that represents a scaled down world. So when a morph
sets its position to e.g. 0@0, I want to set it to the topLeft corner of the
pasteUp. I can use align:with:, but I thought some of the following might
have some usefulness, but all returned 0@0. None of them have tests...
�� screen globalPointToLocal: (0@0).
�� screen localPointToGlobal: (0@0).
�� screen pointInWorld: (0@0).
�� screen referencePositionInWorld: (0@0).
�� screen point: 0@0 from: screen.

perhaps if you pick some morph, which (sub)chile of some TransformMorph,

you will be able to see the difference.

but for screen/world zero is always zero, because there is no difference between local and global , since its transformation is identity :)

��

Is there an easy built-in way to convert points from World to the bounds of
another (assume rectangular) morph?

piece of cake, since all morphs use same, global coordinates, simple subtraction works:
��

localpoint := globalpoint - morph topLeft

��

Thanks.

-----
Cheers,
Sean
--
View this message in context: http://forum.world.st/World-to-Morph-Local-Co-ordinates-tp4735247.html
Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

--
Best regards,
Igor Stasenko.