glScalef
, glScalex
- multiply the current matrix by a general scaling matrix
void glScalef(GLfloat x, GLfloat y, GLfloat z) void glScalex(GLfixed x, GLfixed y, GLfixed z)
x
, y
, z
Specify scale factors along the x
, y
, and z
axes, respectively.
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:
( |
| ) |
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.
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
.
Copyright © 2003-2004 Silicon Graphics, Inc.
This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.
glEnable
, glMatrixMode
, glMultMatrix
, glPushMatrix
, glRotate
, glTranslate