Java (JDK), 123 bytes
d->n->{var c="\\|/".split("")[d];for(int i=n;i-->0;)System.out.printf("%"+(d<1?n-i:d>1?i+1:1)+"s%2s %s%n",c,i%2<1?c:"",c);}
Takes d as one of 0, 1 or 2.
Olivier Grégoire
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