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Vector Projection vs Dot Product

How to create a HotSwap workflow for Processing in IntelliJ

Go to File -> Settings -> Build, Exec... -> Debugger -> HotSwap

Check “Build project before reloading classes”

Check “Reload classes in background”

Set “Reload classes after compilation to “Always”

For Groovy, check “Enable ... for Groovy code”

Then create a Macro.

Edit -> Macros -> Start Macro Recording

Record the following actions in this order:

File -> SaveAll

Run -> Debugging Actions -> Reload Changed Classes

Then, stop the Macro recording.

Give the macro a name, any name, “SaveAndReload” for example.

Then go to File -> Settings -> Keymap

Find the macro you just recorded and set “Ctrl+S” as the key shortcut for it.

Then, find SaveAll in the Keymap, and remove the key shortcut for it. (Which is Ctrl+S)

That should be it.

#intellij #processing #java #hotswap #groovy

How to use the PostFX processing library in Eclipse

Clone the PostFX from Github

Get Gradle and run “gradle fatJar” in the postfx root directory to build the jar

Go into the new build directory and find the fat jar.

Edit its contents by renaming it with a zip extension first, and then delete all directories inside it except for “ch” and “META-INF”. Rename it to a jar file.

Copy the shader directory from the postfx root directory to the location of the fat jar (the jar and the shader folder should be siblings)

In your system (mine is Windows 7), search for the following two dll’s: nativewindow_awt.dll nativewindow_win32.dll Place these dll’s under the following directory structure: <Eclipse project root folder>/natives/windows-amd64/

Add the fat jar to Eclipse as a user library and use that library with your processing project.

#processing #postfx #shader #eclipse

Processing video in Eclipse

Download the video library via Processing’s Add Tools, this will get all the needed native libraries (gstreamer, etc)

Then for the run configuration, use:

-Djna.library.path=C:\...\Processing3\libraries\video\library\windows64 -Dgstreamer.library.path=C:\...\Processing3\libraries\video\library\windows64 -Dgstreamer.plugin.path=C:\...\Processing3\libraries\video\library\windows64\plugins

Thanks to josephtaylor from https://forum.processing.org/two/discussion/7593/processing-2-2-1-in-maven

Some ffmpeg settings I use

For Instragram posts

ffmpeg -i input.mp4 -c:v libx264 -c:a copy -vf "scale=640:640, setpts=1.0*PTS" -profile:v baseline -level 3.0 output.mp4

For Hi-Res avi to mp4

ffmpeg -i input.avi -c:v libx264 -c:a libaac -movflags +faststart output.mp4

For simple mp3 to wav

ffmpeg -i input.mp3 output.wav

For images to mp4

rem http://hamelot.io/visualization/using-ffmpeg-to-convert-a-set-of-images-into-a-video/ rem -r is the framerate (fps) rem -crf is the quality, lower means better quality, 15-25 is usually good rem -s is the resolution rem -pix_fmt yuv420p specifies the pixel format, change this as needed

ffmpeg -r 24 -f image2 -start_number 578 -i "%5d.png" -vcodec libx264 -crf 25 -preset medium -pix_fmt yuv420p test2.mp4