Get the coordinates of the corners of the "blue box"

[dacastror]

Hello, I would like to know how I can get the coordinates of the 8 corners of the "blue box" of a group or component that has been rotated and scaled

I tried to bounds.corner or local_bounds.corner but do not work properly for what I need, I have been looking and I could not find the appropriateness

.

[dacastror]

help

[Dan Rathbun]

@dacastror said:

help

http://forums.sketchucation.com/viewtopic.php?f=180&t=46183&p=413432

[dacastror]

I know you helped me very much, sorry for asking much just I want to learn

[thomthom]

Check out the source of this plugin that draws edges of the boundingbox: http://forums.sketchucation.com/viewtopic.php?t=29377#p256536

[dacastror]

@thomthom said:

Check out the source of this plugin that draws edges of the boundingbox: http://forums.sketchucation.com/viewtopic.php?t=29377#p256536

Thom thank you very much.
I know I need this in lines 66 to 68 of your code:

definition = self.get_definition(entity) bb = definition.bounds pts = self.bound_points(bb).map { |pt| pt.transform( entity.transformation )

is a shame that is not yet ready to understand these lines clearly, however I will be very useful, very grateful

(sorry for my bad English)

[thomthom]

Get's the ComponentDefinition of the ComponentInstance or Group
definition = self.get_definition(entity)

Get's the bounds of the definition - note that if you get the bounds of the instance it will be a Boundingbox aligned to the model axis - not the instance axis. Which is why you need to get the definition bounds.
bb = definition.bounds

Now transform the points of the definition boundingbox with the transformation of the instance.
pts = self.bound_points(bb).map { |pt| pt.transform( entity.transformation )

In other words, get the boundingbox of the definition and apply the instance transformation to the coordinates of that boundingbox.