glScale(3G)		       OpenGL Reference			   glScale(3G)

NAME    [Toc]    [Back]

     glScaled, glScalef	- multiply the current matrix by a general scaling
     matrix

C SPECIFICATION    [Toc]    [Back]

     void glScaled( GLdouble x,
		    GLdouble y,
		    GLdouble z )
     void glScalef( GLfloat x,
		    GLfloat y,
		    GLfloat z )

PARAMETERS    [Toc]    [Back]

     x,	y, z
	    Specify scale factors along	the x, y, and z	axes, respectively.

DESCRIPTION    [Toc]    [Back]

     glScale produces a	nonuniform scaling along the x,	y, and z axes. The
     three parameters indicate the desired scale factor	along each of the
     three axes.

     The current matrix	(see glMatrixMode) is multiplied by this scale matrix,
     and the product replaces the current matrix as if glScale were called
     with the following	matrix as its argument:




				(		  )
				   x   0   0   0
				|		  |

				|  0   y   0   0  |

				|		  |
				   0   0   z   0
				|		  |

				(  0   0   0   1  )

     If	the matrix mode	is either GL_MODELVIEW or GL_PROJECTION, all objects
     drawn after glScale is called are scaled.

     Use glPushMatrix and glPopMatrix to save and restore the unscaled
     coordinate	system.

NOTES    [Toc]    [Back]

     If	scale factors other than 1 are applied to the modelview	matrix and
     lighting is enabled, lighting often appears wrong.	 In that case, enable
     automatic normalization of	normals	by calling glEnable with the argument
     GL_NORMALIZE.

ERRORS    [Toc]    [Back]

     GL_INVALID_OPERATION is generated if glScale is executed between the
     execution of glBegin and the corresponding	execution of glEnd.






									Page 1






glScale(3G)		       OpenGL Reference			   glScale(3G)

ASSOCIATED GETS    [Toc]    [Back]

     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

SEE ALSO    [Toc]    [Back]

     glMatrixMode, glMultMatrix, glPushMatrix, glRotate, glTranslate


									PPPPaaaaggggeeee 2222