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@caitelartv2619
ha, i got some fun errors out of p5js today while trying a new method of drawing octagons. i didn't notice i was still using centrex and centrey instead of a translated origin (0,0) on line 120. looks pretty cool, but wow that was hard to figure out!!
and in nice colours
here is a beautiful version of my p5.js caitessegonal 💗
I learned some p5.js today and implemented a mockup of the animation I was trying to get working in the Caitessegonal plugin back in the day.
It only took me a couple hours to write up, which was really surprising! The plugin was a lot more complicated because to draw shapes in a 2D context in Nuke I had to process it on a line basis - so the plugin code was checking if each pixel it was handed was inside a particular shape.
To draw the same animation in p5.js I had to write one function to draw 3 rectangles and 1 octagon. It's definitely not as nuanced, but it was a nice feeling to get something animated out of this idea!
Submitting with lots of errors still getting thrown. Relegated to my “do this code when bored” pile.
Also blogging from my correct account.
This is a lovely tutorial that fits exactly what I needed. Tutorial on how to get and use the 10.6 SDK.
Xcode 4.5 (currently in preview state) seems not supporting Mac OS X 10.6 SDK any more. So I'm having trouble using it since oF can not be compiled without 10.6 SDK. Any suggestions (except downgrading to 4.3) ?
This is a good resource for finding the 10.6 SDK that I need for my plugin (or any plugins) to compile. Most of the links are broken but they do give good advice. I've obtained Xcode 4.6 from the [Mac Developers Resources site](https://developer.apple.com/downloads/index.action), though it did require registration. This contains the 10.6 SDK.
Here is a series of errors from building the plugin. Thanks Apple!
The issue behind the first one is that from Mac OS 10.6 (recommended by the Nuke Developers Guide) to Mac OS 10.7, the C++ compilers g++ was removed and replaced by "clang". This error was fixed by changing two lines, as shown, in the Makefile.
The next error also involves the change from 10.6. In newer versions of Xcode, Apple removed the SDKs from 10.6, which Nuke plugins are heavily reliant on. I'm still working on fixing this one by downloading an older version of XCode from the Mac Developers website. Looks like I'm going to run into trouble with permissions though. May just get it running on my personal Macbook and give a small demonstration on there but document it on here.
While I wait for a specific version of Xcode to download because the computer I'm using has no Mac OS X 10.6 SDKs anymore (thank you so much Apple), here is a post about the code of my plugin!
I've hosted my code in a repository on GitHub, but kept it private. The link is now public, and you can access the terribad coding at http://github.com/caitelatte/caitessegonal. I make version control repositories for most of my code-based assignments, so that I can track what I've been doing. It's been particularly useful for figuring out the stuff with compatibility between versions of Mac OS (thanks again Apple).
Above I've included a few of the best/most important parts of my code. Everything is commented so that hopefully other people and future me can understand what's going on. I included ASCII diagrams of the concepts I'm using to calculate what colour pixels are in front of the which_shape and inside_octagon functions.
The only other file in interest in the repository is the Makefile, which is all kinds of broken (I love Apple so much). I've included a screen shot of it.
Is this a better point in triangle test (2D)? - posted in Math and Physics: So I was looking around for a way to do the old point in triangle test, and I was finding a lot of ways to do it using trig. Then I found one using areas, and this was simple enough, but the only way I knew to do areas was Herons formula, and thats a lot of sqrts (16 per triangle test, I believe). Then I found a way to do triangle areas using the determinant. No sqrt, no cos, or sin, etc. Im working fro...
I'm finding ways to test if a point is inside an octagon, which will be used for finding where a point sits. At the moment I'm finding this out by seeing if it's in the square which bounds the octagon, then if it's in the left area, right area, or centre area. If it's in the sides, i then check if it's in the top area, centre or bottom areas. If in the top or bottom sides, i check if it's in the triangles.
This seems like a fairly efficient method, especially if I use a similar algorithm to that discussed in the forum linked here. Checking if a point is in an octagon seems very confusing from other places that I've looked at and I understand this method a lot better. :)
And we have a Tessegonal node! Figured out the Makefile magic, got it to compile (took about an hour to figure out a few error messages)! However, I've realised with the help of Kit that a 3D output isn't really appropriate, and a 2D image is much better - 3D expects a texture, but I want to shade each polygon seperately. :(
So I'm rewriting, basing it on Checkerboard2.cpp which is included in the NDK examples folder.
Now I can't just create the polygons and expect something else to render it for me, which is a sad. Will need to figure out maths to decide which shape a pixel is in. It's quite different to Checkerboard because they don't have to deal with diagonal lines and I most definitely do. Shouldn't be too bad!
Next up: maths.
Caitegonal - two octagons sharing points. Will probably add a square where the white is for further customization of colours. Still a mockup in illustrator. :)
Got a plan for my plugin. Here's a mockup I made using patterns in Adobe Illustrator. Submitting the plan today (only ~5 weeks late!).
This is subject to change - may substitute for octagons and squares as suggested by my friend Zac. This would mean I could use the name Caitessellatte without being wrong (circles don't tessellate). It would also be easier to draw, as there would be 8 points instead of having to calculate the points i need.
My class diagram is also included in these photos, based on the Triangle.cpp sample file included in the NDK documentation but changed to reflect my project. I will probably use the Triangle.cpp step by step tutorial to work through making Caitessellatte, though I will be adding a series of shapes instead of just one.
Progress 19th March
diagram is due by the end of week 6 (28th March) since plugins haven't made as much progress.
morphing assignment by the end of week 7 (4th April)
I've found the most likely method for creating nice visual objects and manipulating them, and that thing is Cinder.
I need to work through the tutorials for both Nuke plugins (I thought I'd posted this already but apparently not) and Cinder now. In that order preferably so that I can make connections between the two.
need to see if I can install the Cinder libraries on the macs here at uni. otherwise my life will become very sad and I'm not sure how I can get around that.
and then i need to actually write the thing!
IDEAS
A cool thing would be to take a vague roto outline of an object, drawn by the user, and project sine waves or other mathematically based waves outwards from that. Definitely more complicated than how I just described it. but it seems nice and probably useful! sliders would be for wavelength, colour and height etc. input would be a roto, and then the user would put their own other thing on top of it, using my output as the background in place of a green screen or something. Maybe just one point node, with no interference with other nodes would be a good place to start though as this seems pretty hard.
cartoony effects as in Scott Pilgrim?
To begin: I'm not sure if I can use openFrameworks as a library for my Nuke plugin. This is a serious issue and possibly I'll have to use Cinder, despite the fact that openFrameworks looks a lot friendlier.
Also their website is beautiful and feels functional and I even love the documentation page.
Lots of useful functions everywhere. Still on version 0.8.0 and it looks like some parts of the documentation aren't quite done - the advanced reference only has descriptions for a couple of the classes on the shortest level.
Don't think this is suited for the project after a short read. Looks good though and might be useful for future projects.
Cinder seems to be the framework with more external tutorials out of openFrameworks and Cinder, but in the About page they specifically say that openFrameworks is a better place for beginners to start from - this will probably affect my choice as I don't know a lot about applied programming.
Notes on Cinder:
standalone library. should be able to use it for a nuke plugin as long as I can actually use it as a library.
"built-in object oriented XML parsing API"
"full I/O abstraction - seamless I/O from flat files, memory, resources and networks" good for however i get the source image and output another in Nuke
things about 3D graphics: perspective and orthographic cameras in the core classes, tile-based renderer,
GL-based GUI for powerful, convenient manipulation of parameters (sliders!)
mathematics: lots of things that I can use. e.g. poly-bezier paths, polygons, B-splines etc.
full support for floating point HDR pixel processing in image I/O, OpenGL and software. this seems like an interesting thing.
take-aways:
Cinder has lots of features and I want to use it if it isn't too difficult.
image source: screencaps of @taybenlor's iOS app "Instadoge" taken by Allyson Kazmucha for an article on the app
I just had a genius idea for my assessable Nuke plugin from reading about Cinder's font and text capabilities. Why not make a doge-transformer! At key frames, users can place words on the screen to describe a key revelation. These can appear in brightly coloured comic sans (master font!) and fly or dissolve into appearance to add a huge amount of class to the user's video!
DISCLAIMER: This is a terrible idea and I won't do this.
