RaspberryPi Stacks

Moderators: Klaus, FourthWorld, heatherlaine, kevinmiller, robinmiller

[-hh]
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Re: RaspberryPi Stacks

Post by [-hh] » Tue Oct 18, 2016 2:18 am

Raspberry Pi stacks collection #82 = fileSplitAndJoin2c.livecode

This is a file splitter and joiner.
You can split (the copy of) any file into parts of up to <splitSize> length or join such parts again.

Set input path for SPLITTING: drag a file's icon to the upper field or use btn "File to split...".
Set input paths for JOINING: drag numbered file's icons to the lower field or use btn "Files to join...".

Made especially for use with zip files for/of the LC forums (you can upload up to three files of size <= 250 KB). The upload (of parts) to the forums needs endings ".zip" (use check button). The downloader can then use this stack to join such parts again [tested with files of type .lce, .dmg, .zip, .tar and up to 2 GB length].

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.

This is a repost for version 2c.
(Through an oversight I had uploaded the 'Mac-only' first version, sorry.)
Attachments
fileSplitAndJoin2c.livecode.zip
(6.25 KiB) Downloaded 176 times
splitAndJoin2.png
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Re: RaspberryPi Stacks

Post by [-hh] » Sun Oct 30, 2016 5:26 am

Raspberry Pi stacks collection #83 = listUtility_100.livecode

ListUtility v1.0 are scripts for a list field, bundled in a self-contained group (just copy and paste it. Or use the scripts ...). I need that for lists with several hundred lines, this works here (also on Raspi) pretty fast.

The list field is set to have non-contigous multiple selection available.
  • Reorder the list by dragging one line or (may be non-contiguous) blocks of lines.
    Reordering is either slow and repeating every second or fast by using shiftKey.
  • Reorder the list using buttons. Move one line or (may be non-contiguous) blocks of lines.
    Reordering is either fast by using shiftKey or slow and repeating every second.
  • Populate the list with filePaths (default) or the contents of a file.
    Use buttons for that or dragAndDrop to the field.
  • Remove duplicate entries from the list, choose case-sensitivity for that.
  • Sort the list by several criteria (also by foundLines).
  • From a search field search case-sensitive a string and highlite the found locations in the list. Search is triggered either by EnterKey/ReturnKey or after every keyUp.
One function is often needed to build "hilitedLines":
Building contiguous or systematic ranges of numbers.
This is very simple, but (thanks LC) rather powerful.

Code: Select all

-- numbers from n1 to n2 step stp, delimited with (string) dlmtr
-- and prefix pfx and suffix sfx, numberformat as given in nbf
function uRange n1,n2,stp,dlmtr,nbf,pfx,sfx
  if stp is empty then put 1 into stp
  if 0 < (n1-n2)*stp then return empty
  if dlmtr is empty then put cr into dlmtr #<-- cr
  if nbf is not empty then set numberformat to nbf
  repeat with i=n1 to n2-stp/2 step stp
    put dlmtr & pfx & i & sfx after s
  end repeat
  return char 1+length(dlmtr) to -1 of s
end uRange
Recall that for "step" in the repeat fractions (like 1/3, 7/8) and non-integers (like 0.25, 2.5) are also allowed!

Code: Select all

-- short version for comma-delimited lists
function listRange n1,n2,stp
  if stp is empty then put 1 into stp
  if 0 < (n1-n2)*stp then return empty
  repeat with i=n1 to n2-stp/2 step stp
    put comma & i after s
  end repeat
  return char 2 to -1 of s
end listRange
The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Attachments
listUtility_100.livecode.zip
Was erraneously a beta version. Is now latest version v1.0
(12.51 KiB) Downloaded 180 times
listUtility_100.png
Adjust the highliting colors to your needs using the color swatches at top
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Re: RaspberryPi Stacks

Post by [-hh] » Sun Nov 06, 2016 1:41 am

Raspberry Pi stacks collection #84 = convexHull.livecode

The Convex hull of a set of points is the smallest convex set containing the set (non-math: A rubber band around all points, as tight as possible). For a finite set of points the hull is a polygon using a subset of the points.

The computation of such a polygon is non-trivial. There are several algorithms, see for a good overview
https://en.wikipedia.org/wiki/Convex_hull_algorithms .
This here is an implementation of Andrew's monotone chain algorithm, see link in the script of "ConvexHull".
Some hints.
  • You may use as input random points (check button at top left) or use by the button at top right a file containg lines of points.
  • You may use the shiftKey (selects contiguous) or the cmd-/ctrlKey (selects non-contiguous) for choosing a subset of points in the input field (most right). If you then choose "Use selection" at bottom right, only this subset is used for computing the convex hull.
  • If you use it for a set of controls then simply add all 'extremal points' of each objects to the list of points, e.g. topleft, topright, bottomright and bottomleft of a rectangle.
You may also copy the algorithm only here.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Attachments
convexHull.livecode.zip
stackfileversion of the zipped stack is 5.5
(6.31 KiB) Downloaded 197 times
convexHull.png
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Re: RaspberryPi Stacks

Post by [-hh] » Sun Nov 20, 2016 5:31 pm

Raspberry Pi stacks collection #85 = perspective67.livecode
Update 2017-03-12 ... Improved speed by 20% (and new layout helpers for the distortion).
Update 2017-01-10 ... Added Bernd Niggemann's (bn) antialiasing technique. Thanks Bernd!

Perspective Image Distortion = LC-Magick #4

[Nov 2016] This is my early X-mas gift to the community (if you are not religious take it as new year's gift). It's a gift because I needed a few hours of concentrated work on several days for the final result, a lot of 'deep thoughts' wasted for that ;-) .

The main code is finally only at about 100 lines and is based on ideas presented on imageMagick's distortion page (thanks to Anthony Thyssen):

This is the LiveCode implementation of the (quadrilateral) perspective distortion technique.
For each new 'distortion' the algorithm has to build and solve a system of 8 linear equations for 8 parameters. These are then used to 'reverse lookup' for each target pixel appropriate pixels in the source image --- a technique that ensures that there are no 'missing' pixels in the target distortion.

The result is surprising. I never thought this could be made fast enough for the LC IDE. But:

Using LC 6 (which is up to 3 times faster than LC 7/8/9 with this technique) we have on RaspberryPi 2/3 computing times around 1 second for a medium sized (distorted) target image, acceptable as I find.

The stack has because of included "Test"-images a size that is not acceptable in the forum. So it is available (fast) via the "Sample Stacks" item of the toolbar or (slower) at livecodeshare.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Attachments
antialiasedDistortion.png
Distorted 310x350 image, needs 450 ms on Mac mini 2.5GHz using LC 6.7.11.
Uses antialiased border.
antialiasedDistortion.png (108.13 KiB) Viewed 2535 times
perspective.png
Distorted 310x350 image, needs 280 ms on Mac mini 2.5GHz using LC 6.7.11.
perspective.png (38.97 KiB) Viewed 2923 times
buchenberg.jpg
Original 480x360 image
Last edited by [-hh] on Sun Mar 12, 2017 6:38 am, edited 6 times in total.
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SparkOut
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Re: RaspberryPi Stacks

Post by SparkOut » Sun Nov 20, 2016 8:44 pm

Wow, that's another brilliant piece of work Hermann, vielen Dank!

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Re: RaspberryPi Stacks

Post by capellan » Mon Nov 21, 2016 3:10 pm

Amazing work, Hermann! :D
Many Thanks for sharing all these Math Gems.

How about this for a new challenge?
https://www.willmcgugan.com/blog/tech/p ... -and-html/

Alejandro

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Re: RaspberryPi Stacks

Post by [-hh] » Mon Jan 02, 2017 11:46 am

Raspberry Pi stacks collection #86 = jigsawPuzzle2c.livecode

JigsawPuzzle v2c

Technique used: The pieces are polygon graphics of linear and cubic bezier curves. They are filled with backpattern-images from portions of the whole imagedata. Highlighting is done by setting the ink, shaping the pieces includes random parts: Top and left are adjusted to fit the upper and left neighbour, right and bottom have at random "in" or "out" connectors.

You may
** choose a built-in image or import one.
** choose the width of the basic square of all pieces. This determines the number of pieces. If the image has not appropriate size then it is cropped (the imagedata only).
** choose to allow rotation of the pieces
** choose to collect the 'border' pieces at card's bottomRight.
** choose to indicate a correct location by highlighting the currently dragged piece.

The stack has a size that is not acceptable in the forum. So it is available (fast) via the "Sample Stacks" item of the toolbar or (slower) at livecodeshare.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
As always the scripts are free for non-commercial use only.
Attachments
jigsawPuzzle.png
jigsawPuzzle.png (146.63 KiB) Viewed 2683 times
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Re: RaspberryPi Stacks

Post by [-hh] » Sun Jan 08, 2017 9:49 am

Raspberry Pi stacks collection #87 = circularDistortionV300.livecode
Updated to v3.0.0 on 2017-01-20 ... Improved antialiasing, first common version

Circular (Polar) Image Distortion = LC-Magick #5 (Jan 2017)
By Hermann Hoch and Bernd Niggemann


This is the LiveCode implementation of the well known polar-plot-technique.
For each new 'distortion' the algorithm computes the polar coords of the target and looks up the pixel data at the corresponding cartesian coords of the source image.
The main code is only at about 80 lines and is once again based on ideas presented on imageMagick's distortion page (thanks to Anthony Thyssen).

You can have circular arcs up to a full circle, filled between an inner and outer radius. Optionally the imagedata can be flipped or mirrored at midth.

Once again, the result is surprisingly fast if the targeted object is not too large, say diameter < 500 px. I did several optimization loops for speed. Using LC 6 (which is 2-3 times faster than LC 7/8/9 with this technique) we have on RaspberryPi 2/3 computing times around 1-2 seconds for a medium sized (distorted) target image, acceptable for me.

The stack has a size that is not acceptable in the forum. So it is available (fast) via the "Sample Stacks" item of the toolbar or (slower) at livecodeshare.

The stack has help, the main script is commented.
You can import source images, export/copy target images or use a text field as input.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704. On Raspi use LC 651 for increasing speed!
Attachments
edinburghAntialiased.png
Edinburgh panorama, mirrored both horizontally and vertically at midth.
Used border-antialiasing.
Needs 1 to 2 seconds (LC 6 to 9) in total on a medium fast machine (2.5 GHz)
outputHNY.jpg
Circular Arc from text input
inputHNY.jpg
The text input (a simple fied)
Last edited by [-hh] on Fri Jan 20, 2017 1:08 am, edited 1 time in total.
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Re: RaspberryPi Stacks

Post by [-hh] » Mon Jan 16, 2017 4:59 am

Raspberry Pi stacks collection #88 = recentStackFiles.livecode

This is a simple utility stack for managing the contents of the menu item

File / Open recent File

of LiveCode 6/7/8/9. You can
  • delete or add all entries,
  • delete or add single entries,
  • export the current list to a text file,
  • import a text file of stack paths and
    add to or replace the current list of entries with it.
  • remove duplicate entries or at that path no longer-existing files,
  • use the current work list as launcher for a stack by rightClicking a path line.
That's why I made the stack:
If one is working with different projects one can have by that easily a different menu of "recent files" for each project.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Attachments
RecentStackFiles.livecode.zip
(3.53 KiB) Downloaded 157 times
RecentStackFiles.png
Last edited by [-hh] on Mon Jan 16, 2017 5:16 am, edited 1 time in total.
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Re: RaspberryPi Stacks

Post by [-hh] » Sun Jan 22, 2017 7:18 am

Raspberry Pi stacks collection #89 = SEhelper1b.livecode(*)
(May 16, 2917: Added "Theme switcher" part only as SELights.livecode)

This is a simple utility for helping to work with the script editor:
  • A dark/light colour-theme switcher.
    Of course, the scripteditor has to be open for this one-click solution to work.
    This simply "inverts" your current settings from the preferences by setting the ink.
    All tabs of one editor window have the same theme, different editor windows can have different ink.
    LC resets to your (preferred) 'light theme' on every startup.
    The script for this button only I posted here: http://forums.livecode.com/viewtopic.ph ... 26#p150426
  • A marks menu, that jumps to special comments (marks).
    A mark is a (possibly indented) line that starts with any of
    '--:M ' or '--:M ' or '#:M '
    that is: commentChar(s) &colon& "M" & space
    You write marks into your script and it does nothing than commenting if not read only and evaluated by the "Marks" button.
    This works also with "dirty" (i.e. unsaved) scripts.
Both scripts don't change any part of your scripts, they don't add any backscript or forescript, they don't change any engine files and they cost (nearly) NO additional time for editing or compiling.
The theme is reset by LC itself to "Light" with every startup of it.

For optional use is also included
  • A "pairs"-balancer for the currently edited script, that searches for the next unmatched opening to the left and for the next unmatched closing part of the pair to the right. This works also with "dirty" (i.e. unsaved) scripts.
  • A field for 'quoting/unquoting' several lines of code that may contain quotes.
More help is included in the stack.
You can drag the window around by grabbing it near it's border.

You may use the stack as ordinary stack (as it is), use it as plugin or simply use the scripts.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.

---
(*) Update to version 1b: Improved 'balanced' selection of content between pairs.
Attachments
SEHelper.png
(upper part) The dark variant of the default colorization.
(lower part) The three size states of the helper.
SEHelper.png (24.33 KiB) Viewed 1387 times
SELights.livecode.zip
Dark/Light-Theme switcher only (by setting blend modes)
Respects your preferences settings for the light theme.
(1.92 KiB) Downloaded 83 times
SEhelper1b.livecode.zip
The stack, v1b as of Jan 23, 2017
(replace there "notSrcCopy" by "blendDifference")
(5.36 KiB) Downloaded 162 times
Last edited by [-hh] on Tue May 16, 2017 3:56 pm, edited 4 times in total.
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Re: RaspberryPi Stacks

Post by [-hh] » Tue Jan 31, 2017 11:38 pm

Raspberry Pi stacks collection #90 = BilinearPerspective141.livecode
[Version 1.4.1 of Feb 1, 2017 -- avoid now linux ink-bug]

Bilinear (quadrilateral) Image Distortion = LC-Magick #6
[By Hermann Hoch and Bernd Niggemann]

This is the LiveCode implementation of the well known bilinear distortion technique.
For each new 'distortion' the algorithm solves 8 linear equations and looks up the pixel data at the corresponding coords of the source image. The 'core' code is only at about 110 lines. Based on the description here: http://www.imagemagick.org/Usage/distorts/

* Drag the handles of the 'distortion-generating' polygon.
* Use the 'helper' buttons for flipping the image or mirroring the polygon
* Inflate or deflate the 'distortion-generating' polygon ('zoom').
* Antialias or and/or frame the distorted result.
* Copy the result or save it to a file.
* Use a text field for input, to generate distorted 'banners'.
* Use the images menu for testing with some examples.
* Import your own images into the example images menu.

The stack has help. Parts of the main scripts are commented.

Once again, the result is surprisingly fast if the targeted object is not too large. Using LC 6 (which is 2-3 times faster than LC 7/8/9 with this technique) we have on RaspberryPi 2/3 computing times around 1-2 seconds for a medium sized distorted target image, acceptable for me. (Antialiasing may double these times -- beauty has its price.)

The stack has a size that is not acceptable in the forum. So it is available (fast) via the "Sample Stacks" item of the toolbar or (slower) at livecodeshare.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Attachments
edi_bilinear.png
Bilinear perspective (4-point-) distortion
edi_linear.png
Linear perspective (4-point-) distortion
edi_source.png
Source image
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Re: RaspberryPi Stacks

Post by [-hh] » Wed Feb 15, 2017 9:45 pm

Raspberry Pi stacks collection #91 = BeautifyScriptInField_103.livecode

This is a simple utility for helping to work with script formatting.

'Beautify' formats any *text selection* of a field (or the whole filed) by calling handlers of LC's script editor. Thus the indentation and colorisation is the same as if you had done this, using your SE prefs, in the script editor and then copied as styled text to a field.
  • Beautify
    Indents and colorizes the current selection or, if nothing is selected, the whole field. If you choose to use your SE prefs, the result is identical to doing this 'manually' in SE.
  • Line Numbers
    Add line numbers to a selection or, if nothing is selected, to the whole field (this is NOT a separate numbering, it inserts numbers). Vice versa remove all integers which are word 1 of a line (fragile, of course).
  • LightsOff
    Uses a dark theme (reverses your SE clorization prefs) for the card.
You can moreover drag the window around by grabbing it near its border.

The stack is complementary to well known SE helper stacks of Max V. and Paul H.
(see 'Sample stacks' or livecodeshare.runrev.com).

The stack uses a switch for versions LC 6/7 and LC 8/9. It runs fine in LC 6/8/9, formatting is very slow in LC 7.
The script works on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Differences between v 1.0.3b and 1.0.3d are only in ink settings (needed for latest LC 9.0.0)
Attachments
BeautifyScriptInField103d.livecode.zip
Aug 16, 2017: Update for reduced ink set of LC 9
Usable with LC 6.7.11/7.1.4/8.1.6/9.0.0
(21.8 KiB) Downloaded 21 times
BeautifyScriptInField_103b.livecode.zip
(v103b works around a lock-cursor-bug)
Usable with LC 6/7/8
(8.37 KiB) Downloaded 143 times
beautify.png
At bottom a selection in a field, in midth the 'beautified' selection,
at top added moreover line numbers.
beautify.png (17.81 KiB) Viewed 2162 times
Last edited by [-hh] on Wed Aug 16, 2017 11:40 am, edited 1 time in total.
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Re: RaspberryPi Stacks

Post by [-hh] » Fri Mar 10, 2017 1:05 am

Raspberry Pi stacks collection #92 = FuzzySearch.livecode
(current version 1.0.6 as of Mar 10, 2017)

FUZZY SEARCH finds approximations to your search string in a given list of 'keywords'. You select the 'fuzziness' of the approximations. The demo lookup list of the stack are the 3233 keywords of LCScript (LC 8 dict).

Definition.
  1. 'Keyword' = word 1 of a line of your lookup string if the search string is one word.
  2. 'Keyword' = a line of your lookup string if the search string has more than one words.
Just type in your search string.
The _first_ char of your search string is optionally handled as _correct_ if button "first" is checked (increases speed).
Your search string (optionally past char one) will be changed in order to find matches to keywords by:
  • D = Deletion of one char,
  • I = Insertion of one char,
  • S = Substitution of one char,
  • T = Transposition (Swap) of two adjacent chars.
We get one penalty point for each of these actions. These penalty scores are listed before each found keyword 'approximation'.

Examples.
  1. A score of 0 is an exact match of the search string to word 1 of one of the keyword lines.
  2. search 'teh' has a minimal score of 1 compared to 'ten' (S) or to 'the' (T).
  3. search 'tehrr' has a minimal score of 2 compared to (word 1 of) 'there is a' (TS) or to (word 1 of) 'there is no' (TS).
  4. search 'frost' has a score of minimal 1 compared to 'front' (S) and of 2 compared to 'first' (ST) or 'font' (DS) or 'from' (SD).
Two kinds of 'fuzziness' are available:
  • Absolute Fuzziness
    limits the absolute score of penalty points.
  • Percentage Fuzziness
    compares the percentage amount of fuzziness to the maximum of search string's length and keyword line's length. The slider sets an upper limit for that comparison.
Goodies.
  • Choose a dark or light theme for the whole card (by setting the group's ink).
  • Drag the stack window by grabbing an unused pixel near its border.
  • Go to a path item of the full stack path (small square at top left).
  • Type (fast) with the mouse over the the keywords field (so that it has focus) to select the first match to your typing.
The script works (tested) on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.

_________
Hey Simon, now you can look up "teh" in the keywords of LCScript :-)
http://forums.livecode.com/viewtopic.ph ... 93#p140093
____________________
v1.0.6 ... Mar 10, 2017
improved speed, removed a small bug, and (for Raspi) display of scrollbars.
Attachments
fuzzySearch106.livecode.zip
(36.26 KiB) Downloaded 153 times
fuzzySearch106.png
Dark theme of the search demo.
Last edited by [-hh] on Fri Mar 10, 2017 7:00 pm, edited 3 times in total.
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Re: RaspberryPi Stacks

Post by Simon » Fri Mar 10, 2017 1:22 am

Thanks -hh

Simon
I used to be a newbie but then I learned how to spell teh correctly and now I'm a noob!

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Re: RaspberryPi Stacks

Post by [-hh] » Fri Mar 10, 2017 11:09 am

Raspberry Pi stacks collection #93 = DePerspective.livecode
(current version 1.0.1 of Mar 10, 2017)

DePerspective/Undistort (quadrilateral) distortion
This is the inverse operation of the (quadrilateral/fourpoint) perspective distortion. It removes such a distortion from an image (includes 'unskew' and 'unrotate'). More exactly: It tries to remove such a distortion using your manual guidance.

You choose EditMode and drag one of the four handles to indicate the distortion.

Actions to PREPARE the first result are
  • maxW or maxH
    choose the length of the longer 'horizontal' side of the distortion as width or, respectively, the length of the longer 'vertical' side of the distortion as height of the 'undistorted' rectangle.
  • Origin
    moves the origin of the polygon when selecting the distortion. You may use also the arrowkeys for that.
  • Source
    shows the distorted input for comparison.
  • EditMode
    shows/ hides the distortion selecting polygon
  • Images Menu
    • Use the images menu for testing some examples. Use "IMPORT..." to import your own images or paste an image. Then use the menu again.
    • CmdSelect or CtrlSelect an image name from the menu to delete the image (after a dialog).
  • The relativePoints
    of the distorting polygon are shown for "fine-tuning" the location of the four handles. Just edit a coordinate and hit Enter or use button "GO".
  • Memory Slots 1-6
    ShiftClick "M" (at the left half of a button) to memorize the points of the selection polygon together with the image's name. The image's name is then shown as tooltip. Click at "R" (at the right half of a button) to recall the memory: Shows the image and the selection polygon.
  • GO
    does the job, using the region selected by the polygin, with a result that you hopefully can use.
Available actions on the first result AFTER the 'Undistortion' are
  • Crop
    crops inwards (removing pixels) or outwards (adding transparency) the result.
  • Width and Height
    change the width and/or the height of the result, respecting a chosen relation.
  • LowerThreshold
    sets the "black-limit"for the average color of a pixel. Below that limit the pixel becomes black.
  • UpperThreshold
    sets the "white-limit"for the average color of a pixel. Above that limit the pixel becomes white.
  • Angle
    rotates the result by multiples of 90 degrees.
  • Tesseract
    If you have installed the open source OCR utility tesseract, then it is called with your result as input. See the script of the button for parameter settings for the 'SerialNumber'-example.
The stack has a size that is not acceptable in the forum. So it is available (fast) via the "Sample Stacks" item of the toolbar or (slower) at livecodeshare.

The stack runs on Mac/Win/Linux using LC 6/7/8/9, and on RaspberryPi using (the for Raspi available) LC 651 or LC 704.
Attachments
serialNum_steps.png
Top down.
Step 1: Select the distortion with polygon handles
Step 2: State after undistortion (click on button 'GO')
Step 3: Apply thresholds for black pixel (30) and white pixel (90)
serialNum_tess31_90.png
Step 4: Output from Tesseract on Mac.
Summary: Manual adjustments using trial and error -- NO AUTOMATIC.
serialNum_tess31_90.png (19.98 KiB) Viewed 1908 times
Last edited by [-hh] on Fri Mar 10, 2017 6:44 pm, edited 2 times in total.
shiftLock happens

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