計算 polygon 線長度 (edge length)

以下是快速計算 polygon 線長度的 mel 程式:

{
string $edge[]=`ls -sl`;
string $tmp[] =`polyListComponentConversion -fe -tv $edge[0]`;
string $vtx[]=`ls -fl $tmp`;
vector $p1 =`pointPosition -w $vtx[0]`;
vector $p2=`pointPosition -w $vtx[1]`;
print(mag($p2-$p1));

};