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new Vector2(x, y)
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二维向量
Name Type Default Description xNumber 0 optional X component
yNumber 0 optional Y component
Members Show Inherited
| Name | Type | Default | Description |
|---|---|---|---|
className
|
String | Vector2 |
类名 |
isVector2
|
Boolean | true | |
elements
|
Float32Array |
数据 |
|
x
|
Number |
X component |
|
y
|
Number |
Y component |
Methods Show Inherited
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copy(m){Vector2}
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Copy the values from one vec2 to this
Name Type Description mVector2 the source vector
Returns:
Type Description Vector2 this -
clone(){Vector2}
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Creates a new vec2 initialized with values from this vector
Returns:
Type Description Vector2 a new Vector2 -
toArray(array, offset){Array}
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转换到数组
Name Type Default Description arrayArray.<number> | TypedArray [] optional 数组
offsetNumber 0 optional 数组偏移值
Returns:
Type Description Array -
fromArray(array, offset){Vector2}
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从数组赋值
Name Type Default Description arrayArray.<number> | TypedArray 数组
offsetNumber 0 optional 数组偏移值
Returns:
Type Description Vector2 this -
set(x, y){Vector2}
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Set the components of a vec4 to the given values
Name Type Description xNumber X component
yNumber Y component
Returns:
Type Description Vector2 this -
add(a, b){Vector2}
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Adds two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的和
Returns:
Type Description Vector2 this -
subtract(a, b){Vector2}
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Subtracts vector b from vector a
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的差
Returns:
Type Description Vector2 this -
multiply(a, b){Vector2}
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Multiplies two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的积
Returns:
Type Description Vector2 this -
divide(a, b){Vector2}
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Divides two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的商
Returns:
Type Description Vector2 this -
min(a, b){Vector2}
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Returns the minimum of two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Vector2 this -
max(a, b){Vector2}
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Returns the maximum of two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Vector2 this -
scale(scale){Vector2}
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Scales this by a scalar number
Name Type Description scaleNumber amount to scale the vector by
Returns:
Type Description Vector2 this -
scaleAndAdd(scale, a, b){Vector2}
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Adds two vec2's after scaling the second vector by a scalar value
Name Type Description scaleNumber the amount to scale the second vector by before adding
aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Vector2 this -
distance(a, b){Number}
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Calculates the euclidian distance between two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Number distance between a and b -
squaredDistance(a, b){Number}
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Calculates the squared euclidian distance between two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Number squared distance between a and b -
length(){Number}
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Calculates the length of this
Returns:
Type Description Number length of this -
squaredLength(){Number}
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Calculates the squared length of this
Returns:
Type Description Number squared length of this -
inverse(a){Vector2}
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Returns the inverse of the components of a vec2
Name Type Default Description aVector2 this optional Returns:
Type Description Vector2 this -
dot(a, b){Number}
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Calculates the dot product of two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Number product of a and b -
cross(a, b){Number}
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Computes the cross product of two vec2's
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Number cross product of a and b -
lerp(v, t){Vector2}
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Performs a linear interpolation between two vec2's
Name Type Description vVector2 tNumber interpolation amount between the two vectors
Returns:
Type Description Vector2 this -
random(scale){Vector2}
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Generates a random vector with the given scale
Name Type Default Description scaleNumber 1 optional Length of the resulting vector. If ommitted, a unit vector will be returned
Returns:
Type Description Vector2 this -
transformMat3(m){Vector2}
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Transforms the vec2 with a mat3
Name Type Description mMatrix3 matrix to transform with
Returns:
Type Description Vector2 this -
transformMat4(m){Vector2}
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Transforms the vec2 with a mat4
Name Type Description mMatrix4 matrix to transform with
Returns:
Type Description Vector2 this -
exactEquals(a, b){Boolean}
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Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Boolean True if the vectors are equal, false otherwise. -
equals(a, b){Boolean}
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Returns whether or not the vectors have approximately the same elements in the same position.
Name Type Description aVector2 bVector2 optional 如果不传，计算 this 和 a 的结果
Returns:
Type Description Boolean True if the vectors are equal, false otherwise. -
sub()
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Alias for
Vector2#subtract -
mul()
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Alias for
Vector2#multiply -
div()
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Alias for
Vector2#divide -
dist()
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Alias for
Vector2#distance -
sqrDist()
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Alias for
Vector2#squaredDistance -
len()
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Alias for
Vector2#length -
sqrLen()
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Alias for
Vector2#squaredLength