public static dvektor Inverse(dvektor aa)
{
int total = aa.x + aa.y + aa.z;
dvektor retv = aa + (-total);
return(retv * -1);
}
public Block blockAdjacentToNeighboringChunkCoord(ChunkIndex neighborCI, dvektor dir) // OR maybe - after all this.
{
ChunkIndex adjIndex;
ChunkIndex unitCI = new ChunkIndex(dvektor.Abs(dir));
dvektor inverseDvek = dvektor.Inverse(dvektor.Abs(dir));
ChunkIndex inverseCI = new ChunkIndex(inverseDvek);
adjIndex = inverseCI * neighborCI; // zero out direction that we want
int dir_coord = dir.total() == -1 ? CHUNKLENGTH : 0; // if dir pos, this chunk is pointing to us from negative and vis-versa
ChunkIndex adjSide = new ChunkIndex(dir_coord, dir_coord, dir_coord) * unitCI;
adjIndex = adjIndex + adjSide;
return(blockAt(adjIndex));
}
public ChunkIndex(dvektor d)
{
x = (int)d.x;
y = (int)d.y;
z = (int)d.z;
}
public static dvektor Abs(dvektor aa)
{
return(aa * aa);
}
public static dvektor OppositeDirection(dvektor d)
{
return(d * -1.0f);
}
public dvektor(ChunkIndex ci)
{
this = new dvektor(ci.x, ci.y, ci.z);
}
