Matrix2
2*2 matrix manipulation
PhilipRBrenan@yahoo.com, 2004, Perl License
Synopsis
Example t/matrix2.t
#_ Matrix _____________________________________________________________
# Test 2*2 matrices
# philiprbrenan@yahoo.com, 2004, Perl License
#______________________________________________________________________
use Math::Zap::Matrix2 identity=>i;
use Math::Zap::Vector2;
use Test::Simple tests=>8;
my ($a, $b, $c, $v);
$a = matrix2
(8, 0,
0, 8,
);
$b = matrix2
(4, 2,
2, 4,
);
$c = matrix2
(2, 2,
1, 2,
);
$v = vector2(1,2);
ok($a/$a == i());
ok($b/$b == i());
ok($c/$c == i());
ok(2/$a*$a/2 == i());
ok(($a+$b)/($a+$b) == i());
ok(($a-$c)/($a-$c) == i());
ok(-$a/-$a == i());
ok(1/$a*($a*$v) == $v);Description
2*2 matrix manipulation
Constructors
new
Create a matrix
matrix2
Create a matrix. Synonym for "new".
identity
Identity matrix
new2v
Create a matrix from two vectors
Methods
check
Check its a matrix
is
Test its a matrix
accuracy
Get/Set accuracy
round
Round: round to nearest integer if within accuracy of that integer
singular
Singular matrix?
clone
Create a matrix from another matrix
Print matrix
add
Add matrices
negate
Negate matrix
subtract
Subtract matrices
matrixVectorMultiply
Vector = Matrix * Vector
matrixScalarMultiply
Matrix = Matrix * scalar
matrixMatrixMultiply
Matrix = Matrix * Matrix
matrixScalarDivide
Matrix=Matrix / non zero scalar
det
Determinant of matrix.
inverse
Inverse of matrix
rotate
Rotation matrix: rotate anti-clockwise by t radians
equals
Equals to within accuracy
Operators
Operator overloads
add operator
Add operator.
subtract operator
Subtract operator.
multiply operator
Multiply operator.
divide operator
Divide operator.
equals operator
Equals operator.
determinant operator
Determinant of a matrix
print operator
Print a vector.
Exports
Export "matrix2", "identity"
Credits
Author
philiprbrenan@yahoo.com
Copyright
philiprbrenan@yahoo.com, 2004
License
Perl License.