vec2 library

Constants

dist → const double Function(List<double> a, List<double> b)

Alias for {@link vec2.distance} @function

div → const List<double> Function(List<double> out, List<double> a, List<double> b)

Alias for {@link vec2.divide} @function

len → const double Function(List<double> a)

Alias for {@link vec2.length} @function

mul → const List<double> Function(List<double> out, List<double> a, List<double> b)

Alias for {@link vec2.multiply} @function

sqrDist → const List<double> Function(dynamic a, dynamic b)

Alias for {@link vec2.squaredDistance} @function

sqrLen → const List<double> Function(dynamic a)

Alias for {@link vec2.squaredLength} @function

sub → const List<double> Function(List<double> out, List<double> a, List<double> b)

Alias for {@link vec2.subtract} @function

Properties

forEach → List<double> Function(List<double> a, int? stride, int? offset, int? count, dynamic fn, dynamic arg)

Perform some operation over an array of vec2s.

final

Functions

add(List<double> out, List<double> a, List<double> b) → List<double>

Adds two vec2's

angle(List<double> a, List<double> b) → double

Get the angle between two 2D vectors @param {ReadonlyVec2} a The first operand @param {ReadonlyVec2} b The second operand @returns {Number} The angle in radians

boolequals(dynamic a, dynamic b) → dynamic

Returns whether or not the vectors have approximately the same elements in the same position.

ceil(List<double> out, List<double> a) → List<double>

math.ceil the components of a vec2

clone(dynamic a) → List<double>

Creates a new vec2 initialized with values from an existing vector

copy(List<double> out, List<double> a) → List<double>

Copy the values from one vec2 to another

create() → List<double>

Creates a new, empty vec2

cross(dynamic out, dynamic a, dynamic b) → List<double>

Computes the cross product of two vec2's Note that the cross product must by definition produce a 3D vector

distance(List<double> a, List<double> b) → double

Calculates the euclidian distance between two vec2's

divide(List<double> out, List<double> a, List<double> b) → List<double>

Divides two vec2's

dot(dynamic a, dynamic b) → List<double>

Calculates the dot product of two vec2's

exactEquals(dynamic a, dynamic b) → bool

Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)

floor(List<double> out, List<double> a) → List<double>

math.floor the components of a vec2

fromValues(double x, double y) → List<double>

Creates a new vec2 initialized with the given values

inverse(dynamic out, dynamic a) → List<double>

Returns the inverse of the components of a vec2

length(List<double> a) → double

Calculates the length of a vec2

lerp(dynamic out, dynamic a, dynamic b, dynamic t) → List<double>

Performs a linear interpolation between two vec2's

max(List<double> out, List<double> a, List<double> b) → List<double>

Returns the maximum of two vec2's

min(List<double> out, List<double> a, List<double> b) → List<double>

Returns the minimum of two vec2's

multiply(List<double> out, List<double> a, List<double> b) → List<double>

Multiplies two vec2's

negate(dynamic out, dynamic a) → List<double>

Negates the components of a vec2

normalize(dynamic out, dynamic a) → List<double>

Normalize a vec2

random(List<double> out, double? scale) → List<double>

Generates a random vector with the given scale

rotate(List<double> out, List<double> a, List<double> b, double rad) → List<double>

Rotate a 2D vector @param {vec2} out The receiving vec2 @param {ReadonlyVec2} a The vec2 point to rotate @param {ReadonlyVec2} b The origin of the rotation @param {Number} rad The angle of rotation in radians @returns {vec2} out

round(List<double> out, List<double> a) → List<double>

math.round the components of a vec2

scale(List<double> out, List<double> a, double b) → List<double>

Scales a vec2 by a scalar number

scaleAndAdd(List<double> out, List<double> a, List<double> b, double scale) → List<double>

Adds two vec2's after scaling the second operand by a scalar value

set(List<double> out, double x, double y) → List<double>

Set the components of a vec2 to the given values

squaredDistance(dynamic a, dynamic b) → List<double>

Calculates the squared euclidian distance between two vec2's

squaredLength(dynamic a) → List<double>

Calculates the squared length of a vec2

str(dynamic a) → String

Returns a string representation of a vector

subtract(List<double> out, List<double> a, List<double> b) → List<double>

Subtracts vector b from vector a

transformMat2(List<double> out, List<double> a, List<double> m) → List<double>

Transforms the vec2 with a mat2

transformMat2d(List<double> out, List<double> a, List<double> m) → List<double>

Transforms the vec2 with a mat2d

transformMat3(List<double> out, List<double> a, List<double> m) → List<double>

Transforms the vec2 with a mat3 3rd vector component is implicitly '1'

transformMat4(List<double> out, List<double> a, List<double> m) → List<double>

Transforms the vec2 with a mat4 3rd vector component is implicitly '0' 4th vector component is implicitly '1'

zero(dynamic out) → List<double>

Set the components of a vec2 to zero