Get Image dimentions from reading graphic files
BlitzMax Forums/BlitzMax Programming/Get Image dimentions from reading graphic files
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| Hi There I am coding an animation of clouds moving across a sky on several planes all of them have different x and y sizes. I was wondering is there a way of finding out graphic dimentions from a bitmap or any graphic file with only one frame. It would save me having to manualy look at each one in turn and then type them in one by one. As I need this information for sprite placement. Doesnt matter if it can't be done and sorry for a daft question if thats the case. Thanks Dibble |
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| if the graphic has only one frame, then you can load it as a pixmap and use pixmapwidth to get it's dimensions. |
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| There is also ImageWidth/Height functions for TImage. |
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| you can also use: myImage.width and: myImage.height myImage refers to what ever name you use for the image. |
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| Use of a ruler on the screen is also an established technique! |
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| BlitzSupport wrote some code to do this which didn't require pre-loading of the image. Check the code archives. |
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| Very useful, will save me a lot of time Many Thanks |
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| Here is a program I wrote today from your help 'Gets a list of bitmap files with dimensions 'to get a list of dimensions from one framed bitmapped files named: 'cloud1 to cloud14 Strict Local the_image:TImage 'the current image to check dimensions on Local l_count 'for looping through all the image files Local the_filename:String 'gets the path and then adds the file name then adds the extension Local load_filename:String 'gets the fliename and file extention 'path to my games directory Const path:String = "/Bubble Bobble BB/Graphics/Level/Clouds/" Const filename:String = "Cloud" 'the part of image file which doesnt change Const From_Num = 1 'part of the image name start number eg cloud1 Const To_Num = 14 'to this number image eg cloud14 Print "File name W H" Print "----------------------" For l_count = From_Num To To_Num the_filename = filename + l_count + ".bmp" load_filename = path + the_filename the_image = LoadImage (load_filename) 'load in the image to check 'Error checking dont access the_image object if null If the_image <> Null Print the_filename + " " + the_image.width +" " + the_image.height 'print the file information to screen Else Print "unable to load:"+the_filename End If Next Rem Sample output File name W H ---------------------- Cloud1.bmp 80 22 Cloud2.bmp 51 21 Cloud3.bmp 71 19 Cloud4.bmp 50 21 ... Cloud14.bmp 53 17 End Rem |
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