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image = variable containing the image handle value# = floating number from 0 to 360 degrees |
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I'm going to start this description off with: This command is not fast enough to render rotations in real time! Now, the purpose of this command is to rotate an image a specified number of degrees. Since it is slow, you will need to pre-calculate rotated images with this command. This means, before the program actually displays the images you rotate, you will want to rotate them ahead of time. This command automatically dithers/anti-aliases the rotated graphic image, so it might mess with your transparency. To avoid this issue, use the TFormFilter command. This will render the rotated images with bi-linear filtering. I'm going to end this command with: This command is not fast enough to render rotations in real time! |
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; RotateImage/TFormFilter Example ; Turn on graphics mode Graphics 640,480,16 ; Change the 0 to a 1 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 |