This repo is used for experiments about moiré effect. It will be a collection of test scripts, not a fancy finished software.
This is a simple shader/qml script (Qt5 library) to display computed images in interactive way. It is totally independant of other scripts.
In fact, it is just a tool to merge two images on the fly by multiplicating their pixels values, so that we do not have to open them in image editing tool and apply filters on it.
Launch with qmlscene interactive.qml
It assumes gratings are saved as /tmp/i1.png and /tmp/i2.png (note: other scripts do not save such images).
- Left drag to move image (Ctrl to constrain X, Shift to constrain Y, Alt to rotate)
- Right drag to rotate image
- Double left click to reset position
- Double right click to reset rotation
First tentative with naive code
Two linear gratings with different frequency create a 3rd linear frequency
Not expected but interesting result
Two almost linear gratings create circular pattern
Circular grating with a cross emerging pattern
Result of try and errors with equations
Circular gratings with spiral emerging pattern
Result of try and errors with equations
Use maths to 'invert' phase and have approximative rendered pattern computed
Need work to have better results
Generate two gratings that overlaps into a colored image
Generate two gratings that form a (binary) pixel grid
Generate an image subdivided in 3 hexagonal shaped regions which generate a different pattern depending on the angle of the superposition
