Extracted from Pike v7.3 release 18 at 2002-03-27.
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GL

Method GL.glScale()


Method glScale

void GL.glScale(float|int|array(float|int) x, float|int|void y, float|int|void z)

Description

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

.ce .EQ left ( ~ down 20 matrix { ccol { ~"x" above ~0 above ~0 above ~0 } ccol { ~0 above ~"y" above ~0 above ~0 } ccol { ~0 above ~0 above ~"z" above ~0 } ccol { ~0 above ~0 above ~0 above ~1} } ~~ right ) .EN .sp If the matrix mode is either GL_MODELVIEW or GL_PROJECTION, all objects drawn after GL.glScale is called are scaled.

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

Parameter x

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

Throws

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