santileortiz

Compiled libraries from Gtk's Git repositoriy will end up inside <gtk repo>/gtk/.libs/. To run an application with these
libraries use:

LD_LIBRARY_PATH=<git repo>/gtk/.libs/ <app>

I normally call it from inside the repository using

LD_LIBRARY_PATH=./gtk/.libs/ ~/<app path>

NOTE: Gtk moved from Autotools to Meson, maybe this will put resulting libraries somewhere else.

santileortiz

gnome_session=$(pgrep --full -u $USER gnome-session-binary.*ubuntu)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep DISPLAY)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep XAUTHORITY)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep XDG_SESSION_TYPE)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep DBUS_SESSION_BUS_ADDRESS)

santileortiz

The Liang-Barsky algorithm is a cheap way to find the intersection points between a line segment and an axis-aligned rectangle. It's a simple algorithm, but the resources I was pointed to didn't have particularly good explanations, so I tried to write a better one.

Consider a rectangle defined by x_min ≤ x ≤ x_max and y_min ≤ y ≤ y_max, and a line segment from (x_0, y_0) to (x_0 + Δ_x, y_0 + Δ_y). We'll be assuming at least one of Δ_x and Δ_y is nonzero.

(I'm working with Flash, so I'll be using the convention that y increases as you go down.)

We want to distinguish between the following cases: