x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
GLSCALE(3G) GLSCALE(3G)
NAME
glScaled, glScalef - multiply the current matrix by a general scaling
matrix
C SPECIFICATION
void glScaled( GLdouble x,
GLdouble y,
GLdouble z )
void glScalef( GLfloat x,
GLfloat y,
GLfloat z )
PARAMETERS
x, y, z
Specify scale factors along the x, y, and z axes, respectively.
DESCRIPTION
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 ma-
trix, 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 coor-
dinate system.
NOTES
If scale factors other than 1 are applied to the modelview matrix and
lighting is enabled, lighting often appears wrong. In that case, en-
able automatic normalization of normals by calling glEnable with the
argument GL_NORMALIZE.
ERRORS
GL_INVALID_OPERATION is generated if glScale is executed between the
execution of glBegin and the corresponding execution of glEnd.
ASSOCIATED GETS
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
glMatrixMode(3G), glMultMatrix(3G), glPushMatrix(3G), glRotate(3G),
glTranslate(3G)
GLSCALE(3G)
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