glLoadMatrixd(3)

NAME

       glLoadMatrixd,  glLoadMatrixf  -  replace  the  current matrix with the
       specified matrix

C SPECIFICATION

       void glLoadMatrixd( const GLdouble *m )
       void glLoadMatrixf( const GLfloat *m )

       delim $$

PARAMETERS

       m  Specifies a pointer to 16 consecutive values, which are used as  the
          elements of a $4 ~times~ 4$ 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,  mod-
       elview  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 $m[0], m[1],. .  .,m[15]$,  then  the  modelview  transformation
       $M(v)$ does the following:

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       {M(v)  ~ = ~ {{ left (  matrix {
          ccol { ~m[0] above m[1] above m[2] above m[3] ~}
          ccol { ~m[4] above m[5] above m[6] above m[7] ~}
          ccol { ~m[8] above m[9] above m[10] above m[11] ~}
          ccol  {  ~m[12]~ above m[13]~ above m[14]~ above m[15]~} } right ) }
       ~~ times ~~ {left ( matrix { ccol { ~v[0]~ above  ~v[1]~  above  ~v[2]~
       above ~v[3]~ } } right )} }}

       Where ``$times$'' denotes matrix multiplication.

       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(3G),         glMatrixMode(3G),         glMultMatrix(3G),
       glPushMatrix(3G)

                                                              GLLOADMATRIX(3G)