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glRotatef function

Applies to: desktop apps only

The glRotatef function multiplies the current matrix by a rotation matrix.

Syntax

void WINAPI glRotatef(
  GLfloat angle,
  GLfloat x,
  GLfloat y,
  GLfloat z
);

Parameters

angle

The angle of rotation, in degrees.

x

The x coordinate of a vector.

y

The y coordinate of a vector.

z

The z coordinate of a vector.

Return value

This function does not return a value.

Error codes

The following error code can be retrieved by the glGetError function.

NameMeaning
GL_INVALID_OPERATION

The function was called between a call to glBegin and the corresponding call to glEnd.

Remarks

The glRotatef function computes a matrix that performs a counterclockwise rotation of angle degrees about the vector from the origin through the point (x, y, z).

The current matrix (see glMatrixMode) is multiplied by this rotation matrix, with the product replacing the current matrix. That is, if M is the current matrix and R is the translation matrix, then M is replaced with M • R.

If the matrix mode is either GL_MODELVIEW or GL_PROJECTION, all objects drawn after glRotatef is called are rotated. Use glPushMatrix and glPopMatrix to save and restore the unrotated coordinate system.

The following functions retrieve information related to glRotatef:

glGet with argument GL_RENDER_MODE

glGet with argument GL_MATRIX_MODE

glGet with argument GL_MODELVIEW_MATRIX

glGet with argument GL_PROJECTION_MATRIX

glGet with argument GL_TEXTURE_MATRIX

Requirements

Minimum supported client

Windows 2000 Professional

Minimum supported server

Windows 2000 Server

Header

Gl.h

Library

Opengl32.lib

DLL

Opengl32.dll

See also

glBegin
glEnd
glMatrixMode
glMultMatrix
glPopMatrix
glPushMatrix
glScale
glTranslate

 

 

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Build date: 3/6/2012

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