glloadidentity(3g) [centos man page]

GLLOADIDENTITY(3G)						   OpenGL Manual						GLLOADIDENTITY(3G)

NAME

       glLoadIdentity - replace the current matrix with the identity matrix

C SPECIFICATION

       void glLoadIdentity(void);

DESCRIPTION

       glLoadIdentity replaces the current matrix with the identity matrix. It is semantically equivalent to calling glLoadMatrix() with the
       identity matrix

       1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1

       but in some cases it is more efficient.

ERRORS

       GL_INVALID_OPERATION is generated if glLoadIdentity is executed between the execution of glBegin() and the corresponding execution of
       glEnd().

ASSOCIATED GETS

       glGet() with argument GL_MATRIX_MODE

       glGet() with argument GL_COLOR_MATRIX

       glGet() with argument GL_MODELVIEW_MATRIX

       glGet() with argument GL_PROJECTION_MATRIX

       glGet() with argument GL_TEXTURE_MATRIX

SEE ALSO

       glLoadMatrix(), glLoadTransposeMatrix(), glMatrixMode(), glMultMatrix(), glMultTransposeMatrix(), glPushMatrix()

COPYRIGHT

       Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014							GLLOADIDENTITY(3G)

GLLOADMATRIX(3G)						   OpenGL Manual						  GLLOADMATRIX(3G)

NAME

       glLoadMatrix - replace the current matrix with the specified matrix

C SPECIFICATION

       void glLoadMatrixd(const GLdouble * m);

       void glLoadMatrixf(const GLfloat * m);

PARAMETERS

       m
	   Specifies a pointer to 16 consecutive values, which are used as the elements of a 4 x 4 column-major matrix.

DESCRIPTION

       glLoadMatrix replaces the current matrix with the one whose elements are specified by m. The current matrix is the projection matrix,
       modelview matrix, or texture matrix, depending on the current matrix mode (see glMatrixMode()).

       The current matrix, M, defines a transformation of coordinates. For instance, assume M refers to the modelview matrix. If v = v	0 v  1 v
       2 v  3 is the set of object coordinates of a vertex, and m points to an array of 16 single- or double-precision floating-point values m = m
       0 m  1 ... m  15, then the modelview transformation M  v does the following:

       M  v = m  0 m  4 m  8 m	12 m  1 m  5 m	9 m  13 m  2 m	6 m  10 m  14 m  3 m  7 m  11 m  15 x v  0 v  1 v  2 v	3

       Projection and texture transformations are similarly defined.

NOTES

       While the elements of the matrix may be specified with single or double precision, the GL implementation may store or operate on these
       values in less than single precision.

ERRORS

       GL_INVALID_OPERATION is generated if glLoadMatrix is executed between the execution of glBegin() and the corresponding execution of
       glEnd().

ASSOCIATED GETS

       glGet() with argument GL_MATRIX_MODE

       glGet() with argument GL_COLOR_MATRIX

       glGet() with argument GL_MODELVIEW_MATRIX

       glGet() with argument GL_PROJECTION_MATRIX

       glGet() with argument GL_TEXTURE_MATRIX

SEE ALSO

       glLoadIdentity(), glMatrixMode(), glMultMatrix(), glMultTransposeMatrix(), glPushMatrix()

COPYRIGHT

       Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014							  GLLOADMATRIX(3G)