Creating leaves on trees..
Blitz3D Forums/Blitz3D Programming/Creating leaves on trees..
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| I've seen it done so often but am curious if someone could quickly tell me how its done. |
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| Well, You have a tree base, just a mesh of a tree with no leaves on it. Then you attach sprites, or quads, textured with a texture that comprises of lots of leaves. |
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| You don't actually create the leaves individualy. A big clump of leaves on a texture, applied to a sprite or quad. |
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| I use a low poly tree mesh with flat area for the branches. Then I texture it with a random green mesh, with black set transparent. Then it looks like real leaves you can see behind. Here is code for making random green texture. ts=512 tex55=CreateTexture (ts,ts,15) SetBuffer TextureBuffer (tex55,0) For cdy= 0 To ts-1 For cdx= 0 To ts-1 rca=255 ;Alpha rcg=Rnd(0,150) ;Green rcr=Int(rcg/2) ;Red rcb=Int(rcg/4) ;Blue argb=0 ;clear color argb=(rca Shl 24) Or (rcr Shl 16) Or (rcg Shl 8) Or (rcb) If rcg<74 Then argb=0 ;just to be sure lots of black WritePixel cdx,cdy,argb Next Next SetBuffer BackBuffer() Remember that last line to set the buffer back to BackBuffer. |
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