Rayintersecttwice

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  • pt:P3 dir:P3 -> t1:F e1:E p1:P3 \n\
  • flag1:I t2:F e2:E p2:P3 flag2:I 2
  • pt:P3 dir:P3 -> t1:F e1:E p1:P3 flag1:I 1
  • pt:P3 dir:P3 -> 0

[edit] Description

shoots a ray (pt,dir) to the mesh and looks for the FIRST TWO hits, as (t1,e1,p1,flag1) and (t2,e2,p2,flag2):

  • flag = 1: face was hit
  • flag = 2: edge was hit
  • flag = 3: vertex was hit

t is the parameter for the hit point p: p = pt+t*dir e is the edge that was hit, for face hit (flag=1) it's the edge closest to p

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