Source code for NIFS3 (natural cubic splines) editor written in Zig + Raylib for the Numerical Analysis course @ II UWr

Setup, dependencies

Easiest is using the provided Nix shell in shell.nix. Just type nix-shell in your prompt once you have Nix installed.

Building

zig build

Running

zig build run or ./zig-out/bin/konkurs1

Switching input image

The program loads the hardcoded path pwo++.png, but you can replace that image with another - the dimensions of the export area are determined dynamically based on the size of the input image.

Usage

• left mouse button : move NIFS3 control point
• right mouse button : select NIFS3 control point without moving it
• right mouse button + m : move the whole NIFS3 (must be moved using a control point, mouse scaling is a bit off)
• l : load NIFS3 from save file
• s : save NIFS3 to save file
• e : export to competition format
• left, right, up, down, space+mouse move, middle mouse button+mouse move : move view
• = : increase line thickness
• - : decrease line thickness
• escape : deselect point
• r : reset dt ("weight") of the segment after the selected point
• a : add point
• d : delete point
• g : increase the number of us of the segment after the selected point
• shift+g : decrease the number of us of the segment after the selected point
• n : add new NIFS3