📄 scale.html

📁 glman函数说明 glman函数说明 glman函数说明
💻 HTML
字号:
<HTML>
<BODY>
<PRE>
     <STRONG>NAME</STRONG>
	  <STRONG>glScaled,</STRONG> <STRONG>glScalef</STRONG> - multiply	the current matrix by a
	  general scaling matrix


     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
	  void <STRONG>glScaled</STRONG>( GLdouble <EM>x</EM>,
			 GLdouble <EM>y</EM>,
			 GLdouble <EM>z</EM> )
	  void <STRONG>glScalef</STRONG>( GLfloat <EM>x</EM>,
			 GLfloat <EM>y</EM>,
			 GLfloat <EM>z</EM> )


     <STRONG>PARAMETERS</STRONG>
	  <EM>x</EM>, <EM>y</EM>,	<EM>z</EM>
		 Specify scale factors along the <EM>x</EM>, <EM>y</EM>, and <EM>z</EM> axes,
		 respectively.

     <STRONG>DESCRIPTION</STRONG>
	  <STRONG>glScale</STRONG> produces a nonuniform	scaling	along the <EM>x</EM>, <EM>y</EM>,	and <EM>z</EM>
	  axes.	The three parameters indicate the desired scale	factor
	  along	each of	the three axes.

	  The current matrix (see <STRONG>glMatrixMode</STRONG>)	is multiplied by this
	  scale	matrix,	and the	product	replaces the current matrix as
	  if <STRONG>glScale</STRONG> 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 <STRONG>GL_MODELVIEW</STRONG> or <STRONG>GL_PROJECTION</STRONG>,
	  all objects drawn after <STRONG>glScale</STRONG> is called are	scaled.

	  Use <STRONG>glPushMatrix</STRONG> and <STRONG>glPopMatrix</STRONG> to save and restore the
	  unscaled coordinate system.

     <STRONG>NOTES</STRONG>
	  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 <STRONG>glEnable</STRONG> with the argument	<STRONG>GL_NORMALIZE</STRONG>.

     <STRONG>ERRORS</STRONG>
	  <STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>glScale</STRONG> is executed
	  between the execution	of <STRONG>glBegin</STRONG> and the corresponding
	  execution of <STRONG>glEnd</STRONG>.
     <STRONG>ASSOCIATED</STRONG>	<STRONG>GETS</STRONG>
	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_MATRIX_MODE</STRONG>
	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_MODELVIEW_MATRIX</STRONG>
	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_PROJECTION_MATRIX</STRONG>
	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_TEXTURE_MATRIX</STRONG>

     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>
	  <STRONG>glMatrixMode</STRONG>,	<STRONG>glMultMatrix</STRONG>, <STRONG>glPushMatrix</STRONG>, <STRONG>glRotate</STRONG>,
	  <STRONG>glTranslate</STRONG>











































</PRE>
</BODY>
</HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -