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AppGameKit Classic Chat / [Possible bug] SetSpriteShapePolygon() bounding box incorrect in some cases

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blink0k
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Posted: 28th Oct 2017 02:28 Edited at: 28th Oct 2017 02:29
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Looking at the image you can see some of the shapes do not follow the bounding box. (Concave shapes at the bottom of the image)
If you look at the shape with the dots you can see the points go in a clockwise position (I have coloured the points red=1, yellow=2, green=3, blue=4 etc)
I thought i read somewhere that the points had to be clockwise

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Scraggle
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Posted: 28th Oct 2017 09:29
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There's no mention of it in the help files but I'm pretty sure that Box2D polygons have to use convex hulls
Happy Flapper
Additional Image Functions (9 sprite slicing etc.)
Additional String Functions
XML read, write, parse
Black theme for Geeny
RGB->HSV->RGB
SpriteSheet XML Control
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blink0k
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Posted: 28th Oct 2017 09:40 Edited at: 28th Oct 2017 09:41
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How would i implement that? Any ideas?
If that is the case then. How come the convex hulls up the to work?
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CJB
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Posted: 28th Oct 2017 10:26 Edited at: 28th Oct 2017 10:26
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Quote: "There's no mention of it in the help files but I'm pretty sure that Box2D polygons have to use convex hulls"
Yep. You will have to split the sprite into multiple concave shapes to accurately follow the corner. Something like this:
Aaargh! Ducks!
Phone Tap!
Uzmadesign

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blink0k
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Posted: 28th Oct 2017 21:37
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I am still perplexed as to why the convex hulls up the top of the image work?
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