Mercurial > hg > orthanc-wsi
comparison Resources/TestIIIFTiles.py @ 274:2805246064aa iiif
added SetIIIFForcePowersOfTwoScaleFactors()
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 12 Jul 2023 11:24:56 +0200 |
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| children |
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| 273:1c95010d9d2e | 274:2805246064aa |
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| 1 #!/usr/bin/env python3 | |
| 2 | |
| 3 import requests | |
| 4 import sys | |
| 5 | |
| 6 if len(sys.argv) != 2: | |
| 7 print('Usage: %s <URL to info.json>' % sys.argv[0]) | |
| 8 exit(-1) | |
| 9 | |
| 10 r = requests.get(sys.argv[1]) | |
| 11 r.raise_for_status() | |
| 12 | |
| 13 info = r.json() | |
| 14 | |
| 15 assert(len(info['tiles']) == 1) | |
| 16 assert(len(info['tiles'][0]['scaleFactors']) == len(info['sizes'])) | |
| 17 | |
| 18 width = None | |
| 19 height = None | |
| 20 for size in info['sizes']: | |
| 21 if (width == None or | |
| 22 size['width'] > width): | |
| 23 width = size['width'] | |
| 24 height = size['height'] | |
| 25 | |
| 26 tw = info['tiles'][0]['width'] | |
| 27 th = info['tiles'][0]['height'] | |
| 28 | |
| 29 assert(isinstance(width, int)) | |
| 30 assert(isinstance(height, int)) | |
| 31 assert(isinstance(tw, int)) | |
| 32 assert(isinstance(th, int)) | |
| 33 | |
| 34 def CeilingDivision(a, b): | |
| 35 if a % b == 0: | |
| 36 return a // b | |
| 37 else: | |
| 38 return a // b + 1 | |
| 39 | |
| 40 for s in info['tiles'][0]['scaleFactors']: | |
| 41 assert(isinstance(s, int)) | |
| 42 | |
| 43 countTilesX = CeilingDivision(width, tw * s) | |
| 44 countTilesY = CeilingDivision(height, th * s) | |
| 45 print(tw * s, th * s, countTilesX, countTilesY) | |
| 46 | |
| 47 for m in range(countTilesY): | |
| 48 for n in range(countTilesX): | |
| 49 | |
| 50 # Reference: | |
| 51 # https://iiif.io/api/image/3.0/implementation/#3-tile-region-parameter-calculation | |
| 52 | |
| 53 # Calculate region parameters /xr,yr,wr,hr/ | |
| 54 xr = n * tw * s | |
| 55 yr = m * th * s | |
| 56 wr = tw * s | |
| 57 if (xr + wr > width): | |
| 58 wr = width - xr | |
| 59 hr = th * s | |
| 60 if (yr + hr > height): | |
| 61 hr = height - yr | |
| 62 | |
| 63 # Calculate size parameters /ws,hs/ | |
| 64 ws = tw | |
| 65 if (xr + tw*s > width): | |
| 66 ws = (width - xr + s - 1) / s # +s-1 in numerator to round up | |
| 67 hs = th | |
| 68 if (yr + th*s > height): | |
| 69 hs = (height - yr + s - 1) / s | |
| 70 | |
| 71 url = '%s/%d,%d,%d,%d/%d,%d/0/default.jpg' % (info['id'], xr, yr, wr, hr, ws, hs) | |
| 72 r = requests.get(url) | |
| 73 | |
| 74 if r.status_code == 200: | |
| 75 print('SUCCESS: %s' % url) | |
| 76 else: | |
| 77 print('ERROR: %s' % url) |