Unigine::Math::mat2 Struct
| Header: | #include <UnigineMathLibMat2.h> |
mat2 Class
Members
mat2 ( ) #
Default constructor. Produces an identity matrix.mat2 ( const mat2& m ) #
Constructor. Initializes the matrix by copying a given source matrix.Arguments
- const mat2& m - Source matrix.
mat2 ( float v ) #
Constructor. Initializes the matrix using a given scalar value.Source code (UnigineScript)
mat2(2.0);
/* Creates a matrix
| 2.0 2.0 |
| 2.0 2.0 |
*/Arguments
- float v - Scalar value.
mat2 ( const mat3& m ) #
Constructor. Initializes the matrix using a given mat3 source matrix (3x3). The matrix elements are filled using corresponding elements of the source matrix.Arguments
- const mat3& m - Source matrix (3x3).
mat2 ( const mat4& m ) #
Constructor. Initializes the matrix using a given mat4 source matrix (4x4). The matrix elements are filled using corresponding elements of the source matrix.Arguments
- const mat4& m - Source matrix (4x4).
mat2 ( const dmat4& m ) #
Constructor. Initializes the matrix using a given dmat4 source matrix (3x4). The matrix elements are filled using corresponding elements of the source matrix.Arguments
- const dmat4& m - Source matrix (3x4).
mat2 ( const float* m ) #
Constructor. Initializes the matrix using a given pointer to the source matrix.Arguments
- const float* m - Pointer to the source matrix.
mat2 ( const vec2& col0, const vec2& col1 ) #
Constructor. Initializes the matrix by given two vec2 vectors.Output
Resulting matrix:
| col0.x col1.x |
M= | col0.y col1.y |Arguments
- const vec2& col0 - Source vector for the first column.
- const vec2& col1 - Source vector for the second column.
mat2 ( float m00_, float m10_, float m01_, float m11_ ) #
Constructor. Initializes the matrix with given float values.Output
Resulting matrix:
| m00_ m10_ |
M= | m01_ m11_ |Arguments
- float m00_ - m00_ element.
- float m10_ - m10_ element.
- float m01_ - m01_ element.
- float m11_ - m11_ element.
mat2 ( float m00_, float m10_, float m01_, float m11_, ConstexprTag ) #
Constructor. Initializes the matrix with given constant float values.Output
Resulting matrix:
| m00_ m10_ |
M= | m01_ m11_ |Arguments
- float m00_ - m00_ element.
- float m10_ - m10_ element.
- float m01_ - m01_ element.
- float m11_ - m11_ element.
- ConstexprTag - Auxiliary tag.
mat2 ( float v, ConstexprTag ) #
Constructor. Initializes the matrix with the given float value.Output
Resulting matrix:
| v v |
M= | v v |Arguments
- float v - Value.
- ConstexprTag - Auxiliary tag.
void set ( const float* m ) #
Sets new matrix values using a pointer to the source matrix.Arguments
- const float* m - Pointer to the source matrix.
void set ( const mat2& m ) #
Sets the matrix equal to the specified source matrix.Arguments
- const mat2& m - Source matrix.
void set ( const mat3& m ) #
Sets the matrix using a given mat3 source matrix (3x3). Values m00, m01, m10, m11 from the source matrix are used.Arguments
- const mat3& m - Source matrix (3x3).
void set ( const mat4& m ) #
Sets the matrix using a given mat4 source matrix (4x4). Values m00, m01, m10, m11 from the source matrix are used.Arguments
- const mat4& m - Source matrix (4x4).
void set ( const dmat4& m ) #
Sets the matrix using a given dmat4 source matrix (3x4). Values m00, m01, m10, m11 from the source matrix are used.Arguments
- const dmat4& m - Source matrix (3x4).
void set ( int row, int column, float v ) #
Sets a new value of the matrix element specified by row and column.Arguments
- int row - Row.
- int column - Column.
- float v - The value to be set.
float * get ( ) #
Returns the pointer to the matrix.Return value
Pointer to the matrix.const float * get ( ) const#
Returns the constant pointer to the matrix.Return value
Constant pointer to the matrix.void get ( float* m ) const#
Fills the destination matrix, specified by the given pointer, with matrix values.Arguments
- float* m - Destination matrix pointer.
float & get ( int row, int column ) #
Returns the reference to the matrix element specified by given row and column.Arguments
- int row - Row.
- int column - Column.
Return value
Matrix element reference.float get ( int row, int column ) const#
Returns the value of the matrix element specified by given row and column.Arguments
- int row - Row.
- int column - Column.
Return value
Matrix element value.void setColumn ( int column, const vec2& v ) #
Sets the specified column of the matrix using a given vec2 vector as a source.Arguments
- int column - Column.
- const vec2& v - Source vector.
vec2 getColumn ( int column ) const#
Returns the specified matrix column.Arguments
- int column - Column.
Return value
The vec2 vector with column values.void setIdentity ( ) #
Sets the matrix equal to the identity matrix.void setRotate ( float angle ) #
Fills the rotation matrix using a given angle.Output
Rotation matrix:
| cos(angle) -sin(angle) |
R= | sin(angle) cos(angle) |Arguments
- float angle - Rotation angle, in degrees.
void setRow ( int row, const vec2& v ) #
Sets the specified row of the matrix using a given vec2 vector as a source.Arguments
- int row - Row.
- const vec2& v - Source vector.
vec2 getRow ( int row ) const#
Returns the specified matrix row.Arguments
- int row - Row.
Return value
The vec2 vector with row values.void setScale ( const vec2& v ) #
Fills the scaling matrix using a given vec2 source vector.Output
Scaling matrix:
| v.x 0.0f |
S= | 0.0f v.y |Arguments
- const vec2& v - Source vector.
void setZero ( ) #
Sets all matrix elements equal to 0.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 *.mat2 & operator*= ( const mat2& m ) #
Performs matrix multiplication.Arguments
- const mat2& m - Matrix.
Return value
Resulting matrix.mat2 & operator*= ( float v ) #
Performs scalar multiplication.Arguments
- float v - Scalar value.
Return value
Resulting matrix.mat2 & operator+= ( const mat2& m ) #
Performs matrix addition.Arguments
- const mat2& m - Matrix.
Return value
Resulting matrix.mat2 operator- ( ) const#
Performs matrix negation.Return value
Resulting matrix.mat2 & operator-= ( const mat2& m ) #
Performs matrix subtraction.Arguments
- const mat2& m - Matrix.
Return value
Resulting matrix.mat2 & operator= ( const mat2& m ) #
Performs matrix assignment. Destination matrix = Source matrix.Arguments
- const mat2& m - Source matrix.
Return value
Result.float operator[] ( int i ) const#
Performs array access to the matrix item using a given item index.Arguments
- int i - Matrix item index.
Return value
Matrix item.float & operator[] ( int i ) #
Performs array access to the matrix item reference using a given item index.Arguments
- int i - Matrix item index.
Return value
Matrix item reference.float trace ( ) const#
Returns the trace of the matrix.Return value
Trace of the matrix.float determinant ( ) const#
Returns the determinant of the matrix.Return value
Determinant of the matrix.Last update:
2022-02-04
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