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.