Nineslice unexpected result

[StephanRewind (Stephan Belin)]

Hi guys,

I'm trying to use Nineslice to create a very simple sizable window.
I defined this image as the Nineslice. The red center is the part defined as the center slice in the code.

Here's the code where I define the Nineslice and draw the window:

local DialogueWindowSlice = gfx.nineSlice.new('assets/dialogue-window-slice.png', 4, 4, 3, 3)
DialogueWindowSlice:drawInRect((10), (10), 250, 42) -- Draws window

here's what I get:

I was expecting to get this:

I don't understand the one pixel space between the bottom center slices.

So trying to debug I defined the center slice as one pixel less wide, like this:
local DialogueWindowSlice = gfx.nineSlice.new('assets/dialogue-window-slice.png', 4, 4, 2, 3)

This gives me the result I want. I should be happy about it but I don't understand the logic of it.
Can someone exlain?
Thanks

Stephan

[matt (gingerbeardman)]

Could it be something to do with the fact your image is taller than it is wide?

You could debug directly in CoreLibs/nineslice

[StephanRewind (Stephan Belin)]

Thanks, Matt. Boy I'm an idiot...Coordinates of the inner slice start at 0,0, not 1,1...
So with correct coordinates, it works