Vector2

Manipulate 2D vectors

PhilipRBrenan@yahoo.com, 2004, Perl License

Synopsis

Example t/vector2.t

 #_ Vector _____________________________________________________________
 # Test 2d vectors    
 # philiprbrenan@yahoo.com, 2004, Perl License    
 #______________________________________________________________________
 
 use Math::Zap::Vector2 vector2=>v, units=>u;
 use Test::Simple tests=>7;
 
 my ($x, $y) = u();
 
 ok(!$x                    == 1);
 ok(2*$x+3*$y              == v( 2,  3));
 ok(-$x-$y                 == v(-1, -1));
 ok((2*$x+3*$y) + (-$x-$y) == v( 1,  2));
 ok((2*$x+3*$y) * (-$x-$y) == -5);  
 ok($x*2                   == v( 2,  0));
 ok($y/2                   == v( 0,  0.5));
 

Description

Manipulate 2D vectors

Constructors

new

Create a vector from numbers

vector2

Create a vector from numbers - synonym for "new"

units

Unit vectors

Methods

check

Check its a vector

is

Test its a vector

accuracy

Get/Set accuracy for comparisons

round

Round: round to nearest integer if within accuracy of that integer

components

x,y components of vector

clone

Create a vector from another vector

length

Length of a vector

print

Print vector

normalize

Normalize vector

rightAngle

At right angles

dot

Dot product

angle

Angle between two vectors

add

Add vectors

subtract

Subtract vectors

multiply

Vector times a scalar

divide

Vector divided by a non zero scalar

equals

Equals to within accuracy

Operators

# Operator overloads

add

Add operator.

subtract

Subtract operator.

multiply

Multiply operator.

divide

Divide operator.

angle

Angle between two vectors.

equals

Equals operator.

print

Print a vector.

Exports

Export "vector2", "units", "check", "is"

Credits

Author

philiprbrenan@yahoo.com

philiprbrenan@yahoo.com, 2004

License

Perl License.