Unigine::Math::vec2 Struct
| Header: | #include <UnigineMathLibVec2.h> |
vec2 Class
Members
vec2 ( const hvec2& v ) #
Constructor. Initializes the vector using a given hvec2 source vector.Arguments
- const hvec2& v - Source vector.
vec2 ( ) #
Default constructor. Produces a zero vector.vec2 ( const vec2& v ) #
Constructor. Initializes the vector by copying a given source vector.Arguments
- const vec2& v - Source vector.
vec2 ( float x, float y ) #
Constructor. Initializes the vector using given float values.Arguments
- float x - X component of the vector.
- float y - Y component of the vector.
Examples
Source code (UnigineScript)
vec2(2.0, 3.0);
/*
Creates a vector (2.0, 3.0)
*/explicit vec2 ( float v ) #
Constructor. Initializes the vector using a given scalar value: x=v, y=v.Arguments
- float v - Scalar value.
Examples
Source code (UnigineScript)
vec2(1.0);
/*
Creates a vector (1.0, 1.0)
*/explicit vec2 ( const vec3& v ) #
Constructor. Initializes the vector using a given three-component vec3 source vector: x=v.x, y=v.y.Arguments
- const vec3& v - Three-component source vector.
explicit vec2 ( const vec4& v ) #
Constructor. Initializes the vector using a given four-component vec4 source vector: x=v.x, y=v.y.Arguments
- const vec4& v - Four-component source vector.
explicit vec2 ( const dvec2& v ) #
Constructor. Initializes the vector using a given dvec2 source vector.Arguments
- const dvec2& v - Source vector.
explicit vec2 ( const ivec2& v ) #
Constructor. Initializes the vector using a given ivec2 source vector.Arguments
- const ivec2& v - Source vector.
explicit vec2 ( const float* v ) #
Constructor. Initializes the vector using a given pointer to the array of float elements: x=v[0], y=v[1].Arguments
- const float* v - Pointer to the array of float elements.
vec2 ( float x, float y, ConstexprTag ) #
Constructor. Initializes the vector using given constant float values.Arguments
- float x - X component of the vector.
- float y - Y component of the vector.
- ConstexprTag - Auxiliary tag.
vec2 ( float v, ConstexprTag ) #
Constructor. Initializes the vector using a given constant scalar value: x=v, y=v.Arguments
- float v - Constant scalar value.
- ConstexprTag - Auxiliary tag.
vec2 & abs ( ) #
Returns the absolute values of the vector components.Return value
Vector with absolute values.void set ( float x_, float y_ ) #
Sets the vector by components.Arguments
- float x_ - X component of the vector.
- float y_ - Y component of the vector.
void set ( const float* val ) #
Sets the vector using the array of float elements: x=val[0], y=val[1].Arguments
- const float* val - Pointer to the array of float elements.
void set ( const vec2& val ) #
Sets the vector equal to the specified source vector.Arguments
- const vec2& val - Source vector.
void set ( float val ) #
Sets the vector components equal to specified scalar value: x=val, y=val.Arguments
- float val - Scalar value.
void get ( float* val ) const#
Gets the vector: val[0]=x, val[1]=y.Arguments
- float* val - Pointer to the array of float elements.
float * get ( ) #
Returns the pointer to the vector.Return value
Pointer to the vector.const float * get ( ) const#
Returns the constant pointer to the vector.Return value
Pointer to the vector.float length ( ) const#
Returns the length of the vector.Return value
Vector length.float length2 ( ) const#
Returns the squared length of the vector.Return value
Squared length of the vector.float max ( ) const#
Compares the vector components and returns the greater one.Return value
The greater out of the two vector components.vec2 & normalize ( ) #
Returns normalized vector.Return value
Normalized vector.vec2 & normalizeValid ( ) #
Normalizes a vector, makes its magnitude equal to 1. When normalized, a vector keeps the same direction but its length is equal to 1. Check for the zero vector is performed: if the argument is a zero vector, then a zero vector is returned.Return value
Normalized vector.vec2 & normalizeFast ( ) #
Returns normalized vector, calculated using the fast inverse square root algorithm.Return value
Normalized vector.vec2 & normalizeValidFast ( ) #
Returns normalized vector, calculated using the fast inverse square root algorithm. Check for the zero vector is performed: if the argument is a zero vector, then a zero vector is returned.Return value
Normalized vector.const float * operator const float * ( ) const#
Performs type conversion to const float *.const void * operator const void * ( ) const#
Performs type conversion to const void *.float * operator float * ( ) #
Performs type conversion to float *.void * operator void * ( ) #
Performs type conversion to void *.vec2 & operator*= ( float v ) #
Performs scalar multiplication.Arguments
- float v - Scalar value.
Return value
Resulting vector.vec2 & operator*= ( const vec2& v ) #
Performs vector multiplication.Arguments
- const vec2& v - Vector.
Return value
Resulting vector.vec2 & operator+= ( const vec2& v ) #
Performs vector addition.Arguments
- const vec2& v - Vector.
Return value
Resulting vector.vec2 operator- ( ) const#
Performs vector negation.Return value
Resulting vector.vec2 & operator-= ( const vec2& v ) #
Performs vector subtraction.Arguments
- const vec2& v - Vector.
Return value
Resulting vector.vec2 & operator/= ( const vec2& v ) #
Performs componentwise division of vectors.Arguments
- const vec2& v - Vector.
Return value
Resulting vector.Examples
Source code (UnigineScript)
vec2 a, b;
a = vec2(6.0, 10.0);
b = vec2(2.0, 5.0);
a /= b;
/*
Initial values of vectors a and b:
a (6.0, 10.0)
b (2.0, 5.0)
a /= b;
Vector a after operation:
a (3.0, 2.0)
*/vec2 & operator/= ( float v ) #
Performs componentwise division of the vector by the scalar. Implemented using the calculation of inverse scalar value with subsequent by-component multiplication.Arguments
- float v - Scalar value.
Return value
Resulting vector.Examples
Source code (UnigineScript)
vec2 a = vec2(6.0, 10.0);
a /= 2.0;
/*
Initial value of vector a:
a (6.0, 10.0)
a /= 2.0;
Vector a after operation:
a (3.0, 5.0)
*/vec2 & operator= ( const vec2& v ) #
Performs vector assignment. Destination vector = Source vector.Arguments
- const vec2& v - Source vector.
Return value
Result.float & operator[] ( int i ) #
Performs array access to the vector item reference by using given item index.Arguments
- int i - Vector item index.
Return value
Vector item reference.float operator[] ( int i ) const#
Performs array access to the vector item by using given item index.Arguments
- int i - Vector item index.
Return value
Vector item.void mul ( float v ) #
Multiplies the vector by the value of the specified argument.Arguments
- float v - A float multiplier.
void mul ( const vec2& v ) #
Multiplies the vector by the value of the specified argument.Arguments
- const vec2& v - Vector multiplier.
void div ( float v ) #
Returns the result of division of the vector by the value of the specified arguments.Arguments
- float v - A float divisor value.
void div ( const vec2& v ) #
Returns the result of division of the vector by the value of the specified arguments.Arguments
- const vec2& v - A vec2 divisor value.
vec2 & operator/= ( float v ) #
Returns the result of division of the vector by the value of the specified arguments.Arguments
- float v - Value.
Return value
This vector.vec2 & operator/= ( const ivec2& v ) #
Returns the result of division of the vector by the value of the specified arguments.Arguments
- const ivec2& v - Value.
Return value
This vector.void sub ( float v ) #
Subtracts the argument from all elements of the vector.Arguments
- float v - Value.
void sub ( const vec2& v ) #
Subtracts each element of the specified argument from ther corresponding element.Arguments
- const vec2& v - Value.
vec2 & operator-= ( float v ) #
Subtracts the argument from all elements of the vector.Arguments
- float v - Value.
Return value
This vector.float sum ( ) const#
Returns the sum of vector components.void add ( float v ) #
Performs addition of the specified argument.Arguments
- float v - Value.
void add ( const vec2& v ) #
Performs addition of the specified argument.Arguments
- const vec2& v - Value.
vec2 & operator+= ( float v ) #
Performs addition of the specified value.Arguments
- float v - Value.
Return value
This vector.float iLength ( ) const#
Returns the inverted length of the vector.float iLengthFast ( ) const#
Returns the inverted length of the vector (fast version).vec2 frac ( ) const#
Returns a vector containing fractional parts of the corresponding vector components.float min ( ) const#
Returns the minimum value among all components.ivec2 floor ( ) const#
Returns a vector containing the largest integral values each being less than or equal to the corresponding vector component.ivec2 ceil ( ) const#
Returns a vector containing the smallest integral values each being greater than or equal to the corresponding vector component.Last update:
2022-02-04
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