static int absoluteDir(IConnectableFacePart fp, int absRot) {
        return Rotation.rotateSide(fp.getSide(), absRot);
    }
Default implementation of Connectable face part. Manages connection mask and facilitates connections with
other IConnectables.
<p>
Connection map split into 6 nybbles: (from lowest)
<p>
0000 0000 FFFF 000E DDDD CCCC BBBB AAAA
<p>
A = Corner connections (this wire should connect around a corner to something external)
<p>
B = Straight connections (this wire should connect to something external)
<p>
C = Internal connections (this wire should connect to something internal)
<p>
D = Open sides (this wire is not blocked by a cover/edge part and *could* connect through side)
<p>
E = connection to the centerpart
<p>
F = Render corner connections. Like corner connections but set to low if the other wire part is smaller than this (they render to us not us to them)
core/src/main/java/mrtjp/projectred/core/part/IConnectableFacePart.java