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Dark GDK / How do i flip object mesh?

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petur
15
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Joined: 13th Jul 2009
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Posted: 13th Jul 2009 13:40
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Hi

I created a new cylinder:
dbMakeObjectCylinder( 1, 10 );

My game happens inside the cylinder (using it as a "box" around my gameworld) however! i cannot see the walls once i'm inside it.

Is there a way i can flip the mesh, so it can be seen from the inside?
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Potassium
15
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Joined: 12th Jul 2009
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Posted: 13th Jul 2009 20:01
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I think you just scale the object negatively so that its normals face out.

heres the documentation for dbScaleObject();



==============

If you want toscale the object inside-out, scale neagtive.

Example:
if you want to scale an object -100x:



Hopefully that helps.
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david w
18
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Joined: 18th Dec 2005
Location: U.S.A. Michigan
Posted: 14th Jul 2009 07:05
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That is always not a good idea, yes it will work but there will be cases were things will not appear correctly. The best bet is to either reverse the normals or simply draw backfaces. CullNone.
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dark coder
21
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Joined: 6th Oct 2002
Location: Japan
Posted: 14th Jul 2009 07:59
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If you're using shaders you can just reverse the cull order rather than remove backface culling altogether, that coupled with negative scaling it on any given axis will flip it.

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