Creating an animation image
BlitzMax Forums/BlitzMax Programming/Creating an animation image
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| I am working on a project and want to create an animation image using the grabimage. But I keep getting a unexpect NULL value error. Can anyone tell me where I am going wrong with this code. Help gratefully received. M [Codebox] 'This is me seeting up a BIG IMAGE to grab the entire images in grid 12 x 12, 48 x 48 pixels Global imageOBJECT:TImage=CreateImage(576,576,1,DYNAMICIMAGE|MASKEDIMAGE) 'This is my image for making bigger image - ignore this not part of the problem Global imageMAKEOBJECT:TImage=CreateImage(48,48,1,DYNAMICIMAGE|MASKEDIMAGE) 'This is creating a test BIG image and works Cls For Local x%=0 To 11 For Local y%=0 To 11 SetColor 120+Rand(0,120),0,0 DrawRect 680,50,48,48 SetColor 120,120,0 DrawText (x*12)+y,686,56 GrabImage imageMAKEOBJECT,680,50 SetColor 255,255,255 DrawImage imageMAKEOBJECT,x*48,y*48 Next Next 'THIS IS THE BIT THAT WILL NOT WORK 'I AM TRYING TO GRAB THE BIG IMAGE AND THEN TURN INTO ANIMATION IMAGE GrabImage imageOBJECT,0,0 Global imageALLOBJECTS:TImage=LoadAnimImage(imageOBJECT,48,48,0,143) Flip ' WHEN I TRY TO TEST IT USING THIS IT BRINGS BACK NULL While Not KeyHit(Key_Escape) Cls DrawImage imageALLOBJECTS,Rand(0,100),Rand(0,100),Rand(0,10) Flip Wend End [/Codebox] |
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| It's most likely throwing an error because the 'url' parameter of LoadAnimImage() is expected to be either a string (pointing to a file on the disk) or a TPixmap. You're passing in a TImage so LoadAnimImage() will return NULL which means imageALLOBJECTS=NULL. Change the imageALLOBJECTS:TImage=... line to: Global imageALLOBJECTS:TImage=LoadAnimImage(LockImage(imageOBJECT), 48, 48, 0, 143) |
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| GNS you are a star! That works great. |
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| Just to tidy things up how do I clear imageObject from memory once I have used it in the loadanimimage? Thanks M |
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| imageOBJECT = Null |
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