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Help => Graphics => Topic started by: Chiller on February 23, 2013, 02:18:07 pm

Title: ConvexShape rendering differences: clockwise vs. counter-clockwise
Post by: Chiller on February 23, 2013, 02:18:07 pm

See the image. The triangle is a ConvexShape, the top side of the rectangle which can be seen is a RectangleShape, included for reference (in fact, the rectangle's x coordinates were set to be the same as those of the lower side of the triangle). There was a noticeable difference in size when the vertex coordinates were specified in clockwise order versus counter-clockwise order. All coordinates were integers.

For completeness - these were transparent shapes and what can be seen are the outlines.

[attachment deleted by admin]

Title: AW: ConvexShape rendering differences: clockwise vs. counter-clockwise
Post by: eXpl0it3r on February 23, 2013, 02:53:56 pm

Do you get the reversed effect if you set the outline witdh to -1?

Also you might want to actually ask a question, instead of just wriring statements.

Title: Re: AW: ConvexShape rendering differences: clockwise vs. counter-clockwise
Post by: Nexus on February 23, 2013, 03:17:09 pm

Quote from: eXpl0it3r on February 23, 2013, 02:53:56 pm

Also you might want to actually ask a question, instead of just wriring statements.

In my opinion, it's pretty clear what he wants to say: Intuitively, the orientation should not have an effect on the polygon size. Is this behavior intended or a bug? In the former case, is it documented?

Title: Re: ConvexShape rendering differences: clockwise vs. counter-clockwise
Post by: Laurent on February 23, 2013, 03:37:10 pm

Hum... the extrusion direction of the outline may depend on the order. This should be fixed, yes.

Title: Re: ConvexShape rendering differences: clockwise vs. counter-clockwise
Post by: Chiller on February 23, 2013, 03:43:58 pm

Great! Thanks, everyone.

Title: Re: ConvexShape rendering differences: clockwise vs. counter-clockwise
Post by: Laurent on February 23, 2013, 03:55:23 pm

Done ;)

Thanks for your feedback.