GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 5.6 |
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glRotate(3gl) |
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glRotated, glRotatef − multiply the current matrix by a rotation matrix
void glRotated( GLdouble angle,
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GLdouble x, | |
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GLdouble y, | |
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GLdouble z ) |
void glRotatef( GLfloat angle,
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GLfloat x, | |
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GLfloat y, | |
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GLfloat z ) |
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angle |
Specifies the angle of rotation, in degrees. |
x, y, z
Specify the x, y, and z coordinates of a vector, respectively.
glRotate produces a rotation of angle degrees around the vector $("x", "y", "z")$. The current matrix (see glMatrixMode) is multiplied by a rotation matrix with the product replacing the current matrix, as if glMultMatrix were called with the following matrix as its argument:
Where $c ~=~ cos ("angle")$, $s ~=~ sin ("angle")$, and $||(~"x", "y", "z"~)|| ~=~ 1$ (if not, the GL will normalize this vector).
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.
This rotation follows the right-hand rule, so if the vector $("x", "y", "z")$ points toward the user, the rotation will be counterclockwise.
GL_INVALID_OPERATION is generated if glRotate is executed between the execution of glBegin and the corresponding execution of glEnd.
glGet
with argument GL_MATRIX_MODE
glGet with argument GL_COLOR_MATRIX
glGet with argument GL_MODELVIEW_MATRIX
glGet with argument GL_PROJECTION_MATRIX
glGet with argument GL_TEXTURE_MATRIX
glMatrixMode(3G), glMultMatrix(3G), glPushMatrix(3G), glScale(3G), glTranslate(3G)
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glRotate(3gl) | |