Michael Fabain Dirks
78 lines
2.5 KiB
HTML
78 lines
2.5 KiB
HTML
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<title>Blitz3D Docs</title>
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<link rel=stylesheet href=../css/commands.css type=text/css>
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<h1>CreateImage (width,height[,frames])</h1>
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<h1>Parameters</h1>
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<table>
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width=width of the new image (or its frames)
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<br />
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height=height of the new image
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<br />
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frames= optional number of frames (assumed to be a single frame)
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<h1>Description</h1>
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Sometimes you want to create a completely new graphic on the fly (using other images, drawing commands, etc.) instead of loading one. This command will let you create a new image with a single frame or multiple frames for animation. You specify the width, height, and optional number of frames. The example should be pretty self-explainatory.
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<h1><a href=../2d_examples/CreateImage.bb>Example</a></h1>
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; CreateImage/TileImage/ImageBuffer example
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<br />
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; Again, we'll use globals even tho we don't need them here
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; One variable for the graphic we'll create, one for a timer
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Global gfxStarfield, tmrScreen
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; Declare graphic mode
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Graphics 640,480,16
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; Create a blank image that is 32 pixels wide and 32 high with 10 frames of 32x32
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gfxStarfield=CreateImage(32,32,10)
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; loop through each frame of the graphic we just made
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For t = 0 To 9
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; Set the drawing buffer to the graphic frame so we can write on it
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SetBuffer ImageBuffer(gfxStarfield,t)
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; put 50 stars in the frame at random locations
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For y = 1 To 50
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Plot Rnd(32),Rnd(32)
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Next
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Next
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; Double buffer mode for smooth screen drawing
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SetBuffer BackBuffer()
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; Loop until ESC is pressed
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While Not KeyHit(1)
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; Only update the screen every 300 milliseconds. Change 300 for faster or
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; slower screen updates
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If MilliSecs() > tmrScreen+300 Then
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Cls ; clear the screen
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; Tile the screen with a random frame from our new graphic starting at
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; x=0 and y=0 location.
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TileImage gfxStarfield,0,0,Rnd(9)
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Flip ; Flip the screen into view
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tmrScreen=MilliSecs() ; reset the time
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End If
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Wend
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</tr>
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</table>
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<br>
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<a target=_top href=../index.htm>Index</a><br>
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<br>
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Click <a href=http://www.blitzbasic.co.nz/b3ddocs/command.php?name=CreateImage&ref=comments target=_blank>here</a> to view the latest version of this page online</body>
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