imagecreate — Create an empty image of a given size.
Create an empty image of a given size. Individual pixel values can then be set with. imagegetpixel.
iimagenum -- number assigned to the created image.
iwidth -- desired image width.
iheight -- desired image height.
Here is an example of the imagecreate opcode. It uses the file imageopcodes.csd.
Example 206. Example of the imageload opcode.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in ;-odac -iadc ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: -o imageopcodes.wav -W ;;; for file output any platform </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 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>