dot3

PURPOSE

CROSS3 3D cross parallel cross product

SYNOPSIS

function d = dot3(a,b)

DESCRIPTION

CROSS3  3D cross parallel cross product
  D = DOT3(A,B) calculates the dot product between rows of matrices A
  and B, both of which must be Nx3. D is Nx1 such that 
    C(i) = dot(A(i,:),B(i,:))
 but it is calculated faster.

CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

calc_mesh_quality CALC_MESH_QUALITY Various measures of mesh quality.

SOURCE CODE

0001 function d = dot3(a,b)
0002 %CROSS3  3D cross parallel cross product
0003 %  D = DOT3(A,B) calculates the dot product between rows of matrices A
0004 %  and B, both of which must be Nx3. D is Nx1 such that
0005 %    C(i) = dot(A(i,:),B(i,:))
0006 % but it is calculated faster.
0007 
0008 % (C) 2013 Bartlomiej Grychtol. License: GPL version 2 or 3.
0009 % $Id: dot3.m 4260 2013-06-24 15:17:15Z aadler $
0010 
0011 d = sum(a.*b,2);