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Drawing 2d humac char in 3d

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I'm making a game for the iphone and I have an artist that is drawing the human characters in 2d. I plan of having the environment done in 3d and I just want to draw the 2d picture on to a 3d object ( not wrapping ).

 

Do I just use a regular square polygon and draw with transparency?

 

Everything but the chars will be in 3d. The chars are in 2d and will always have a 2d appearance.

 

Any pointers are appreciated...I search and couldn't really find it through the plithera of 2d questions.

 

Thanks,

Nick

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Hi Nick,

 

What you are looking for is something called "Billboards". If the 3D camera moves, the sprites will always face the camera, always displaying the image. Games like Ragnarok Online do this. Normally what you do is just draw a quad and transform it so it's always facing the camera. 
I'd link a tutorial but it really depends on what technology you are using for the iPhone app. Is it cocos3d? Unity? OpenGL?

 ragnarok-online-6.jpg

Try looking for

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