Class: Vec2

Vec2

new Vec2(x, y)

2-dimension Cartesian vector with built-in (optional) object pool.
Parameters:
Name Type Description
x Number
y Number
Source:

Methods

add(v) → {Vec2}

Add some vector to this one.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
This vector.
Type
Vec2

angle() → {Number}

Get the angle of this vector.
Source:
Returns:
Type
Number

angleBetween(v) → {Number}

Get the angle between this vector and another.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
Type
Number

assign(v) → {Vec2}

Assign this vector the value of another.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
This vector.
Type
Vec2

clear() → {Vec2}

Reset this vector to (0,0).
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Returns:
This vector.
Type
Vec2

copy() → {Vec2}

Make a copy of this vector.
Source:
Returns:
A new vector.
Type
Vec2

det(v) → {Number}

Get the determinate of this vector and another.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
Type
Number

dot(v) → {Number}

Get the dot product of this vector and another.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
Type
Number

equals(v) → {Boolean}

Determine if this vector is equal to another.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
True if vectors are equal.
Type
Boolean

limit(size) → {Vec2}

Limit this vector to a specific magnitude.
Parameters:
Name Type Description
size Number
Source:
Returns:
This vector.
Type
Vec2

magnitude() → {Number}

Get the magnitude of this vector.
Source:
Returns:
Type
Number

magnitude2() → {Number}

Get the squared magnitude of this vector.
Source:
Returns:
Type
Number

normalize(m) → {Vec2}

Normalize this vector.
Parameters:
Name Type Argument Description
m Number <optional>
 Length.
Source:
Returns:
This vector.
Type
Vec2

pcopy() → {Vec2}

Make a pooled copy of this vector
Source:
Returns:
A new vector.
Type
Vec2

rotate(theta) → {Vec2}

Rotate this vector clockwise about the origin by a certain angle.
Parameters:
Name Type Description
theta Number
Source:
Returns:
This vector.
Type
Vec2

set(x, y) → {Vec2}

Set this vector to a set of coordinates.
Parameters:
Name Type Description
x Number
y Number
Source:
Returns:
This vector.
Type
Vec2

smult(n) → {Vec2}

Scalar multiply this vector by a value.
Parameters:
Name Type Description
n Number
Source:
Returns:
This vector.
Type
Vec2

sub(v) → {Vec2}

Subtract some vector from this one.
Parameters:
Name Type Description
v Vec2
Source:
Returns:
This vector.
Type
Vec2

toString()

Output this vector.
Source:

<static> aquire() → {Vec2}

Source:
Returns:
Vector from the pool.
Type
Vec2

<static> fromAngle(theta, m) → {Vec2}

Create a vector with a specific angle and magnitude.
Parameters:
Name Type Argument Description
theta Number
m Number <optional>
Source:
Returns:
A new vector.
Type
Vec2

<static> pfromAngle(theta, m) → {Vec2}

Create a pooled vector with a specific angle and magnitude.
Parameters:
Name Type Description
theta Number
m Number
Source:
Returns:
A new vector.
Type
Vec2

<static> rectContains(p1, r1, p2, r2) → {Boolean}

Determines if rectangle 1 is entirely inside of rectangle 2.
Parameters:
Name Type Description
p1 Vec2 Position of rectangle 1
r1 Vec2 Halfwidths of rectangle 1
p2 Vec2 Position of rectangle 2
r2 Vec2 Halfwidths of rectangle 2
Source:
Returns:
True if they rectangle 1 is inside of rectangle 2
Type
Boolean

<static> rectIntersect(p1, r1, p2, r2) → {Boolean}

Determine if two rectangles, defined by a position and a halfwidth vector, overlap.
Parameters:
Name Type Description
p1 Vec2 Position of rectangle 1
r1 Vec2 Halfwidths of rectangle 1
p2 Vec2 Position of rectangle 2
r2 Vec2 Halfwidths of rectangle 2
Source:
Returns:
True if they intersect
Type
Boolean

<static> release(v) → {Number}

Parameters:
Name Type Description
v Vec2
Source:
Returns:
Current pool count.
Type
Number

<static> sizeToHwidth(position, size, out__position, out__hwidth)

Convert a rectangle specified by top-left point + size into center location + halfwidths.
Parameters:
Name Type Description
position Vec2
size Vec2
out__position Vec2 Output position
out__hwidth Vec2 Output hwidths
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