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- // Copyright (C) 1997-2002 Alias|Wavefront,
- // a division of Silicon Graphics Limited.
- //
- // The information in this file is provided for the exclusive use of the
- // licensees of Alias|Wavefront. Such users have the right to use, modify,
- // and incorporate this code into other products for purposes authorized
- // by the Alias|Wavefront license agreement, without fee.
- //
- // ALIAS|WAVEFRONT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- // INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- // EVENT SHALL ALIAS|WAVEFRONT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- // CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- // DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- // TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- // PERFORMANCE OF THIS SOFTWARE.
- //
- //
- // Description:
- // Returns the distance between two 3D points.
- //
- global proc float distance2Pts( float $p1[], float $p2[] )
- {
- if( size($p1) != 3 )
- warning("distance2Pts(): You must give a float array of 3 values as the 1st argument\n");
- if( size($p2) != 3 )
- warning("distance2Pts(): You must give a float array of 3 values as the 2nd argument\n");
-
- float $distance;
- float $v[3];
- $v[0] = $p1[0] - $p2[0];
- $v[1] = $p1[1] - $p2[1];
- $v[2] = $p1[2] - $p2[2];
- $distance = $v[0]*$v[0] + $v[1]*$v[1] + $v[2]*$v[2];
- $distance = sqrt( $distance );
-
- return $distance;
- }
-
-