Polygon entity location (x, y) is double stated values about boxbox

[incompl]

Sounds like a bug to me.

[djmichaelb]

Have some more information... if you try want the polygon at location 1,1 and then use the coordinates (assuming a rectangle for example): [{1,1}, {2,1}, {2,2}, {1,2}] then set position to x:1, y:1 then the rectangle will be positioned at 2,2.

If you always assume the polygon is created at origin 0,0 and then set the position then there is no problem. I had assumed you had to calculate the points for the polygon based on your desired starting location, but you have to create the polygon from 0,0.

[incompl]

Oh that makes sense... I think I've fallen into that trap too come to think of it

[djmichaelb]

Actually... I've come to another realisation. I had assumed that [0,0] is the object origin (based on my first attempts at creating a poly shape) however I suspect now that the origin point for the poly is acutally the center... so for a rectangle of width 1 and height 1, centered at [0,0] the points would need to be [-0.5, -0.5], [0.5,-0.5], [0.5, 0.5], [-0.5, 0.5].

I assume you are well across this but it took me ages to figure out (also explained why my images were aligning badly and not behaving properly when the object started rotating).

Thanks for listening

[incompl]

Always happy to listen :) Glad you figured out your issue!

…

On Thu, Dec 8, 2016 at 4:41 PM, Mike Baxter ***@***.***> wrote: Actually... I've come to another realisation. I had assumed that [0,0] is the object origin (based on my first attempts at creating a poly shape) however I suspect now that the origin point for the poly is acutally the center... so for a rectangle of width 1 and height 1, centered at [0,0] the points would need to be [-0.5, -0.5], [0.5,-0.5], [0.5, 0.5], [-0.5, 0.5]. I assume you are well across this but it took me ages to figure out (also explained why my images were aligning badly and not behaving properly when the object started rotating). Thanks for listening — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#42 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAM4Z34k2h5DjoNBHLWBq1mQ6OqmePaSks5rGHlvgaJpZM4LGBu3> .