imagesize — Return the width and height of a previously opened or created image.
Return the width and height of a previously opened or created image. An image can be loaded with imageload. An empty image can be created with imagecreate.
iimagenum -- the reference of the image.. It should be a value returned by imageload or imagecreate.
iwidth -- image width.
iheight -- image height.
Here is an example of the imagesize opcode. It uses the file imageopcodes.csd.
Example 392. Example of the imagesize opcode.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -n ;no sound output </CsOptions> <CsInstruments> sr=48000 ksmps=1 nchnls=2 ; this test .csd copies image.png into a new file 'imageout.png' giimage1 imageload "image.png" giimagew, giimageh imagesize giimage1 giimage2 imagecreate giimagew,giimageh instr 1 kndx = 0 kx_ linseg 0, p3, 1 ;print imagewidth and imageheigth of image.png prints "imagewidth = %f pixels, imageheigth = %f pixels\\n", giimagew, giimageh myloop: ky_ = kndx/(giimageh) kr_, kg_, kb_ imagegetpixel giimage1, kx_, ky_ imagesetpixel giimage2, kx_, ky_, kr_, kg_, kb_ loop_lt kndx, 0.5, giimageh, myloop endin instr 2 imagesave giimage2, "imageout.png" endin instr 3 imagefree giimage1 imagefree giimage2 endin </CsInstruments> <CsScore> i1 1 1 i2 2 1 i3 3 1 e </CsScore> </CsoundSynthesizer>
Its output should include a line like this:
imagewidth = 180.000000 pixels, imageheigth = 135.000000 pixels