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...Determine if two 3D segments are perpendicular?
Autor: Arash Partow
Homepage: http://www.partow.net
[ Print tip ]  

Tip Rating (4):  
     


function SegmentsPerpendicular(x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4: Double): Boolean;
var 
  
Dx1, Dx2: Double;
  Dy1, Dy2: Double;
  Dz1, Dz2: Double;
begin
 
{
    The dot product of the vector forms of the segments will be
    0 if the segments are perpendicular
 }

  
Dx1 := x1 - x2;
  Dx2 := x3 - x4;

  Dy1 := y1 - y2;
  Dy2 := y3 - y4;

  Dz1 := z1 - z2;
  Dz2 := z3 - z4;

  Result := (((Dx1 * Dx2) + (Dy1 * Dy2) + (Dz1 * Dz2)) = 0)
end;
(* End Of *)

// vérifie si 2 droites tridimensionnelles sont perpendiculaires


 

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