Unigine::vec2 Struct
| Header: | #include <UnigineMathLib.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.
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( )
Returns the length of the vector.Return value
Vector length.float length2( )
Returns the squared length of the vector.Return value
Squared length of the vector.vec2 & normalize( )
Returns normalized vector.Return value
Normalized vector.vec2 & normalizeFast( )
Returns normalized vector, calculated using the fast inverse square root algorithm.Return value
Normalized vector.const float * operator const float *( )
Performs type conversion to const float *.const void * operator const void *( )
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 val )
Performs scalar multiplication.Arguments
- float val - Scalar value.
Return value
Resulting vector.vec2 & operator*=( const vec2 & val )
Performs vector multiplication.Arguments
- const vec2 & val - Vector.
Return value
Resulting vector.vec2 & operator+=( const vec2 & val )
Performs vector addition.Arguments
- const vec2 & val - Vector.
Return value
Resulting vector.vec2 operator-( ) const
Performs vector negation.Return value
Resulting vector.vec2 & operator-=( const vec2 & val )
Performs vector subtraction.Arguments
- const vec2 & val - Vector.
Return value
Resulting vector.vec2 & operator/=( const vec2 & val )
Performs componentwise division of vectors.Arguments
- const vec2 & val - 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 val )
Performs componentwise division of the vector by the scalar. Implemented using the calculation of inverse scalar value with subsequent by-component multiplication.Arguments
- float val - 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 & val )
Performs vector assignment. Destination vector = Source vector.Arguments
- const vec2 & val - 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.Last update:
2020-01-14
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