fgluscaleimage.html

来自「计算机图形学～想必是很多人需要的～在此共享一下」· HTML 代码 · 共 111 行

HTML
111 行
字号 
<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>fgluScaleImage</STRONG> - scale an image to an	arbitrary size     <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG>	  INTEGER*4 <STRONG>fgluScaleImage</STRONG>( INTEGER*4 <EM>format</EM>,				    INTEGER*4 <EM>wIn</EM>,				    INTEGER*4 <EM>hIn</EM>,				    INTEGER*4 <EM>typeIn</EM>,				    void <EM>dataIn</EM>,				    INTEGER*4 <EM>wOut</EM>,				    INTEGER*4 <EM>hOut</EM>,				    INTEGER*4 <EM>typeOut</EM>,				    CHARACTER*8	<EM>dataOut</EM>	)     <STRONG>PARAMETERS</STRONG>	  <EM>format</EM>   Specifies the format	of the pixel data.  The		   following symbolic values are valid:		   <STRONG>GL_COLOR_INDEX</STRONG>, <STRONG>GL_STENCIL_INDEX</STRONG>,		   <STRONG>GL_DEPTH_COMPONENT</STRONG>, <STRONG>GL_RED</STRONG>, <STRONG>GL_GREEN</STRONG>, <STRONG>GL_BLUE</STRONG>,		   <STRONG>GL_ALPHA</STRONG>, <STRONG>GL_RGB</STRONG>, <STRONG>GL_RGBA</STRONG>, <STRONG>GL_LUMINANCE</STRONG>, and		   <STRONG>GL_LUMINANCE_ALPHA</STRONG>.	  <EM>wIn</EM>, <EM>hIn</EM> Specify the width and height, respectively, of the		   source image	that is	scaled.	  <EM>typeIn</EM>   Specifies the data type for <EM>dataIn</EM>. Must be one of		   <STRONG>GL_UNSIGNED_BYTE</STRONG>, <STRONG>GL_BYTE</STRONG>, <STRONG>GL_BITMAP</STRONG>,		   <STRONG>GL_UNSIGNED_SHORT</STRONG>, <STRONG>GL_SHORT</STRONG>,	<STRONG>GL_UNSIGNED_INT</STRONG>,		   <STRONG>GL_INT</STRONG>, or <STRONG>GL_FLOAT</STRONG>.	  <EM>dataIn</EM>   Specifies a pointer to the source image.	  <EM>wOut</EM>,	<EM>hOut</EM>		   Specify the width and height, respectively, of the		   destination image.	  <EM>typeOut</EM>  Specifies the data type for <EM>dataOut</EM>.	Must be	one of		   <STRONG>GL_UNSIGNED_BYTE</STRONG>, <STRONG>GL_BYTE</STRONG>, <STRONG>GL_BITMAP</STRONG>,		   <STRONG>GL_UNSIGNED_SHORT</STRONG>, <STRONG>GL_SHORT</STRONG>,	<STRONG>GL_UNSIGNED_INT</STRONG>,		   <STRONG>GL_INT</STRONG>, or <STRONG>GL_FLOAT</STRONG>.	  <EM>dataOut</EM>  Specifies a pointer to the destination image.     <STRONG>DESCRIPTION</STRONG>	  <STRONG>fgluScaleImage</STRONG> scales	a pixel	image using the	appropriate	  pixel	store modes to unpack data from	the source image and	  pack data into the destination image.	  When shrinking an image, <STRONG>fgluScaleImage</STRONG> uses a box filter to	  sample the source image and create pixels for	the	  destination image. When magnifying an	image, the pixels from	  the source image are linearly	interpolated to	create the	  destination image.	  A return value of 0 indicates	success, otherwise a GLU error	  code is returned (see	<STRONG>fgluErrorString</STRONG>).	  See the <STRONG>glReadPixels</STRONG> reference page for a description	of the	  acceptable values for	<EM>format</EM>,	<EM>typeIn</EM>,	and <EM>typeOut</EM>.     <STRONG>ERRORS</STRONG>	  <STRONG>GLU_INVALID_VALUE</STRONG> is returned	if <EM>wIn</EM>,	<EM>hIn</EM>, <EM>wOut</EM>, or <EM>hOut</EM> are	  &lt; 0.	  <STRONG>GLU_INVALID_ENUM</STRONG> is returned if <EM>format</EM>, <EM>typeIn</EM>, or <EM>typeOut</EM>	  are not legal.     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>	  <STRONG>glDrawPixels</STRONG>,	<STRONG>glReadPixels</STRONG>, <STRONG>fgluBuild1DMipmaps</STRONG>,	  <STRONG>fgluBuild2DMipmaps</STRONG>, <STRONG>fgluErrorString</STRONG></PRE></BODY></HTML>

fgluscaleimage.html - 源码说明

本页面展示了「计算机图形学～想必是很多人需要的～在此共享一下」中的 fgluscaleimage.html 源码文件，采用 HTML 编程语言编写，共 111 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

虫虫下载站收录了大量与计算机图形学相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。

⌨️ 快捷键说明

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