OpenGL ES SDK for Android
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#include <math.h>
Go to the source code of this file.
Functions | |
void | matrixIdentityFunction (float *matrix) |
Takes a 4 * 4 and sets the elements to the Identity function. More... | |
void | matrixTranslate (float *matrix, float x, float y, float z) |
Takes in a 4 * 4 matrix and translates it by the vector defined by x y and z. More... | |
void | matrixMultiply (float *destination, float *operand1, float *operand2) |
Takes 2 matrices and multiplies them together. Then stores the result in a third matrix. More... | |
void | matrixFrustum (float *matrix, float left, float right, float bottom, float top, float zNear, float zFar) |
Create a viewing frustum and store the result in the first parameter. This is usually called by matrixPerspective. More... | |
void | matrixPerspective (float *matrix, float fieldOfView, float aspectRatio, float zNear, float zFar) |
Create a perspective projection matrix and store the results in the first parameter. More... | |
void | matrixRotateX (float *matrix, float angle) |
Rotates a matrix around the x axis by a given angle. More... | |
void | matrixRotateY (float *matrix, float angle) |
Rotates a matrix around the y axis by a given angle. More... | |
void | matrixRotateZ (float *matrix, float angle) |
Rotates a matrix around the Z axis by a given angle. More... | |
void | matrixScale (float *matrix, float x, float y, float z) |
Scales a matrix by a given factor in the x, y and z axis. More... | |
float | matrixDegreesToRadians (float degrees) |
Function to convert degrees into Radians. More... | |
Function to convert degrees into Radians.
[in] | degrees | Angle to be converted. |
Definition at line 152 of file Matrix.cpp.
void matrixFrustum | ( | float * | matrix, |
float | left, | ||
float | right, | ||
float | bottom, | ||
float | top, | ||
float | zNear, | ||
float | zFar | ||
) |
Create a viewing frustum and store the result in the first parameter. This is usually called by matrixPerspective.
[out] | matrix | Destination of the frustum. |
[in] | left | Left side of the frustum. |
[in] | right | Right side of the frustum. |
[in] | bottom | Bottom of the frustum. |
[in] | top | Top of the frustum. |
[in] | zNear | Near visible distance of the frustum. |
[in] | zFar | Far visible distance of the frustum. |
Definition at line 78 of file Matrix.cpp.
Takes a 4 * 4 and sets the elements to the Identity function.
[out] | matrix | Pointer to an array of a 4 * 4 matrix. Must be at least 16 elements long. |
Definition at line 23 of file Matrix.cpp.
Takes 2 matrices and multiplies them together. Then stores the result in a third matrix.
[out] | destination | A pointer to the array the result of the multiplication should be stored. |
[in] | operand1 | A pointer to the first matrix to be multiplied. |
[in] | operand2 | A pointer to the second matrix to be multiplied. |
Definition at line 58 of file Matrix.cpp.
void matrixPerspective | ( | float * | matrix, |
float | fieldOfView, | ||
float | aspectRatio, | ||
float | zNear, | ||
float | zFar | ||
) |
Create a perspective projection matrix and store the results in the first parameter.
[out] | matrix | Destination of the perspective projection matrix. |
[in] | fieldOfView | The field of view in degrees. How far you expect the camera to see in degrees. |
[in] | aspectRatio | The aspect ratio of your viewport. |
[in] | zNear | How close objects can be to the camera before they disappear. |
[in] | zFar | How far away objects can be before they are no longer drawn. |
Definition at line 96 of file Matrix.cpp.
Rotates a matrix around the x axis by a given angle.
[in,out] | matrix | A pointer to the matrix to be rotated |
[in] | angle | A float representing the angle to rotate by in degrees. |
Definition at line 104 of file Matrix.cpp.
Rotates a matrix around the y axis by a given angle.
[in,out] | matrix | A pointer to the matrix to be rotated |
[in] | angle | A float representing the angle to rotate by in degrees. |
Definition at line 116 of file Matrix.cpp.
Rotates a matrix around the Z axis by a given angle.
[in,out] | matrix | A pointer to the matrix to be rotated |
[in] | angle | A float representing the angle to rotate by in degrees. |
Definition at line 128 of file Matrix.cpp.
Scales a matrix by a given factor in the x, y and z axis.
[in,out] | matrix | A pointer to the matrix to be scaled. |
[in] | x | Scaling factor in the X axis. |
[in] | y | Scaling factor in the Y axis. |
[in] | z | Scaling factor in the Z axis. |
Definition at line 140 of file Matrix.cpp.
Takes in a 4 * 4 matrix and translates it by the vector defined by x y and z.
[in,out] | matrix | Pointer to an array of a 4 * 4 matrix. Must be at least 16 elements long |
[in] | x | X component of the translation vector. |
[in] | y | Y component of the translation vector. |
[in] | z | Z component of the translation vector. |
Definition at line 48 of file Matrix.cpp.