Get dimensions of a sprite
BlitzMax Forums/MiniB3D Module/Get dimensions of a sprite
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| Seems like there should be a really obvious way to do this but all I can come up with is convoluted or wasteful. I create a sprite with LoadSprite(), how do I go about determining the dimensions of the picture file I just gave it? I could load the picture with bmax commands and get it's size that way but that's loading it twice just to unload one of them a second later which is going to take forever if I've got to do a lot of pictures, especially larger ones. Can't seem to find anything in minib3d that would just tell me, so I assume I need to dig through the surface list of the sprite, and the brush on the surface, and the texture on the brush, and maybe I can get to the loaded pixmap in there to use PixmapHeight and PixmapWidth... Any ideas or a sample I've missed somewhere? |
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| Well, you could load the texture and apply that to a new sprite.. this way you get the information you need from the texture. loadsprite is more a convenience function should you not need to manipulate it as I recall |
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| Hmm I didn't know you could texture a tsprite. I was under the impression that sprites worked on a system seperate from the normal meshes so they could be batched for more speed. Perhaps I missunderstood, I'll look into loading->reading dimensions-> applying |
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So I went back to my first idea of digging through the sprite to find the texture. However there doesn't appear to be a texture associated with it... I can get the surface, and the brush on the surface, but never get a texture...
Local sprite:TSprite = LoadSprite("sprite.jpg")
if(sprite)
print "- got a sprite"
Local surf:TSurface = GetSurface(sprite, 1)
If(surf)
Print "Got surf"
Local brush:TBrush = GetSurfaceBrush(surf)
If(brush)
Print "Got Brush"
Local tex:TTexture = GetBrushTexture(brush)
If(tex)
Print "got tex" ' never gets here...
End If
End If
End If
end if
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| Following Skully's idea I picked apart TSprite.bmx and basically re-wrote the loader in my app, but I'm still curious why I can't find the texture on a sprite either by GetEntityTexture or digging through the surface->brush->texture. Additionally texture width and height return the loaded texture size, not the picture file dimensions. i.e. 512x256 instead of the 320x240 of the picture. So I think I might need to load the pixmap, get the dimensions then convert that to a texture then apply the texture... but I don't recall how to convert a pixmap to a texture so I gotta go digging. |
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| search > my memory http://blitzmax.com/Community/posts.php?topic=81493#918255 some code I wrote on another project that ran away... I need fewer hard drives and more memory. |
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