glRotated,
glRotatef
[New
- Windows 95, OEM Service Release 2]
The glRotated
and glRotatef functions multiply the current matrix by a rotation
matrix.
void glRotated(
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GLdouble angle, |
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GLdouble x, |
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GLdouble y, |
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GLdouble z |
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); |
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void glRotatef(
|
GLfloat angle, |
|
|
GLfloat x, |
|
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GLfloat y, |
|
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GLfloat z |
|
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); |
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Parameters
angle
The angle of
rotation, in degrees.
x,
y, z
The x,
y, and z coordinates of a vector, respectively.
Remarks
The
glRotate 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 glRotate
is called are rotated. Use glPushMatrix and glPopMatrix to save and restore the
unrotated coordinate system.
The following
functions retrieve information related to glRotate:
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
Error Codes
The following
are the error codes generated and their conditions.
|
Error
Code |
Condition |
|
GL_INVALID_OPERATION
|
glRotate was called between a call to glBegin and the
corresponding call to glEnd. |
See Also