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Atlas part free rotation
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neuroliquid Offline
Member

Post: #1
Atlas part free rotation
Hi again!
Is it possible somehow to draw atlas part rotated with specific angle just like Image::drawRotate(..)?
(This post was last modified: 01-25-2016 03:54 PM by neuroliquid.)
01-25-2016 03:48 PM
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Esenthel Offline
Administrator

Post: #2
RE: Atlas part free rotation
Hi,

Yes but you'll have to manually specify vertex positions / tex coords

You can use the following function for that:
static void face(C Vtx2DTex &a, C Vtx2DTex &b, C Vtx2DTex &c, C Vtx2DTex &d);
VI.face(..);
01-26-2016 08:24 AM
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neuroliquid Offline
Member

Post: #3
RE: Atlas part free rotation
Thanks, VI turned out to be quite useful for 2D.
I'm not sure but it even seems to draw faster than image->draw(..)
02-04-2016 02:59 PM
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Esenthel Offline
Administrator

Post: #4
RE: Atlas part free rotation
VI will be faster if you make calls batched together, that's the whole point of it.
Vertex/Index buffering for faster performance.
02-07-2016 01:59 AM
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neuroliquid Offline
Member

Post: #5
RE: Atlas part free rotation
This time I need to draw atlas part rotating and fading out with transparency in the same time. Problem is that VI.face does not respond to VI.color.
How can I do it then?
06-13-2016 09:51 AM
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Esenthel Offline
Administrator

Post: #6
RE: Atlas part free rotation
You can use:
Code:
struct Vtx2DTexCol
{
   Vec2  pos, tex;
   Color color;
};
and specify color per-vertex
06-15-2016 10:19 AM
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