whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1541)

Database (90)
Files (137)
Forms (107)
Graphic (114)
IDE (21)
Indy (5)
Internet / LAN (130)
IntraWeb (0)
Math (76)
Misc (126)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (266)
VCL (242)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

73 Visitors Online


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

Tip Rating (5):  
     


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


 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners