This page has been translated automatically.
视频教程
界面
要领
高级
实用建议
UnigineEditor
界面概述
资产工作流程
设置和首选项
项目开发
调整节点参数
Setting Up Materials
Setting Up Properties
照明
Landscape Tool
Sandworm
使用编辑器工具执行特定任务
Extending Editor Functionality
嵌入式节点类型
Nodes
Objects
Effects
Decals
Light Sources
Geodetics
World Objects
Sound Objects
Pathfinding Objects
Players
编程
基本原理
搭建开发环境
Usage Examples
UnigineScript
C++
C#
UUSL (Unified UNIGINE Shader Language)
File Formats
Rebuilding the Engine Tools
GUI
双精度坐标
应用程序接口
Containers
Common Functionality
Controls-Related Classes
Engine-Related Classes
Filesystem Functionality
GUI-Related Classes
Node-Related Classes
Objects-Related Classes
Networking Functionality
Pathfinding-Related Classes
Physics-Related Classes
Plugins-Related Classes
IG Plugin
CIGIConnector Plugin
Rendering-Related Classes
注意! 这个版本的文档是过时的,因为它描述了一个较老的SDK版本!请切换到最新SDK版本的文档。
注意! 这个版本的文档描述了一个不再受支持的旧SDK版本!请升级到最新的SDK版本。

Unigine::Math::mat2 Struct

Header: #include <UnigineMathLib.h>

This class represents a matrix of four (2x2) float components.

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.

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 ( ) #

Returns the constant pointer to the matrix.

Return value

Constant pointer to the matrix.

void get ( float * m ) #

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 ) #

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 ) #

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 ) #

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 * ( ) #

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 *.

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- ( ) #

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 ) #

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.

__m128 sse ( ) #

Returns the values of the matrix elements as a 128-bit variable.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Return value

128-bit variable.

void sse ( const __m128 & v ) #

Sets the values of the matrix elements using a given 128-bit variable.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Arguments

  • const __m128 & v - 128-bit variable.
Last update: 2021-04-09
Build: ()