| enable = 0 to turn off filtering; 1 to turn it on |
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This command will enable or disable bi-linear filtering on images that are convoluted (altered) by commands like TFormImage and RotateImage.
This filtering allows the convoluted graphics to have smoother, more aliased edges. This also makes the operations slower. The bi-linear filtering can also create non-transparent edges what will mess with your transparency. Experiment for the best results. Try changing the example to see the difference. |
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; RotateImage/TFormFilter Example
; Turn on graphics mode Graphics 640,480,16 ; Remove the line below to see the difference ; between filter on and off. TFormFilter 0 ; Create new empty graphic to store our circle in gfxBox=CreateImage(50,50) ; Draw the box image ; Set drawing operations to point to our new empty graphic SetBuffer ImageBuffer(gfxBox) Color 255,0,0 ; Note the extra space between the box and the edge of the graphic Rect 10,10,30,30,1 SetBuffer FrontBuffer() While Not KeyHit(1) ; Make a copy of the image so we are always using a fresh one each time ; we rotate it. gfxTemp=CopyImage(gfxBox) ; Rotate it a random value and draw it at a random location RotateImage gfxTemp,Rnd(360) DrawImage gfxTemp,Rnd(640),Rnd(480) Wend |