glGetMapfv man page on OpenSuSE

Man page or keyword search:  
man Server   25941 pages
apropos Keyword Search (all sections)
Output format
OpenSuSE logo
[printable version]

GLGETMAP(3G)							  GLGETMAP(3G)

NAME
       glGetMapdv, glGetMapfv, glGetMapiv - return evaluator parameters

C SPECIFICATION
       void glGetMapdv( GLenum target,
			GLenum query,
			GLdouble *v )
       void glGetMapfv( GLenum target,
			GLenum query,
			GLfloat *v )
       void glGetMapiv( GLenum target,
			GLenum query,
			GLint *v )

PARAMETERS
       target  Specifies  the  symbolic	 name  of  a map.  Accepted values are
	       GL_MAP1_COLOR_4,		GL_MAP1_INDEX,	       GL_MAP1_NORMAL,
	       GL_MAP1_TEXTURE_COORD_1,		      GL_MAP1_TEXTURE_COORD_2,
	       GL_MAP1_TEXTURE_COORD_3,		      GL_MAP1_TEXTURE_COORD_4,
	       GL_MAP1_VERTEX_3,       GL_MAP1_VERTEX_4,      GL_MAP2_COLOR_4,
	       GL_MAP2_INDEX,	  GL_MAP2_NORMAL,     GL_MAP2_TEXTURE_COORD_1,
	       GL_MAP2_TEXTURE_COORD_2,		      GL_MAP2_TEXTURE_COORD_3,
	       GL_MAP2_TEXTURE_COORD_4,		GL_MAP2_VERTEX_3,	   and
	       GL_MAP2_VERTEX_4.

       query   Specifies  which parameter to return.  Symbolic names GL_COEFF,
	       GL_ORDER, and GL_DOMAIN are accepted.

       v       Returns the requested data.

DESCRIPTION
       glMap1 and glMap2 define evaluators.  glGetMap returns evaluator param‐
       eters.  target chooses a map, query selects a specific parameter, and v
       points to storage where the values will be returned.

       The acceptable values for the target parameter  are  described  in  the
       glMap1 and glMap2 reference pages.

       query can assume the following values:

       GL_COEFF	      v returns the control points for the evaluator function.
		      One-dimensional evaluators return order control  points,
		      and two-dimensional evaluators return uorder×vorder con‐
		      trol points.  Each control point consists of  one,  two,
		      three, or four integer, single-precision floating-point,
		      or double-precision floating-point values, depending  on
		      the  type	 of  the evaluator.  The GL returns two-dimen‐
		      sional control points in row-major  order,  incrementing
		      the uorder index quickly and the vorder index after each
		      row.  Integer values, when requested,  are  computed  by
		      rounding the internal floating-point values to the near‐
		      est integer values.

       GL_ORDER	      v returns the order of  the  evaluator  function.	  One-
		      dimensional evaluators return a single value, order. The
		      initial value is 1.  Two-dimensional  evaluators	return
		      two values, uorder and vorder. The initial value is 1,1.

       GL_DOMAIN      v	 returns  the linear u and v mapping parameters.  One-
		      dimensional evaluators return two values, u1 and u2,  as
		      specified	 by glMap1.  Two-dimensional evaluators return
		      four values (u1, u2, v1, and v2) as specified by glMap2.
		      Integer values, when requested, are computed by rounding
		      the internal floating-point values to the nearest	 inte‐
		      ger values.

NOTES
       If an error is generated, no change is made to the contents of v.

ERRORS
       GL_INVALID_ENUM	is  generated  if  either  target  or  query is not an
       accepted value.

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

SEE ALSO
       glEvalCoord(3G), glMap1(3G), glMap2(3G)

								  GLGETMAP(3G)
[top]

List of man pages available for OpenSuSE

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net