NAME fglLoadMatrixd, fglLoadMatrixf - replace the current matrix with the specified matrix FORTRAN SPECIFICATION SUBROUTINE fglLoadMatrixd( CHARACTER*8 m ) SUBROUTINE fglLoadMatrixf( CHARACTER*8 m ) PARAMETERS m Specifies a pointer to 16 consecutive values, which are used as the elements of a 4x4 column-major matrix. DESCRIPTION fglLoadMatrix 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 fglMatrixMode). 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: ( m[0] m[4] m[8] m[12] ) ( v[0] ) | | | | |m[1] m[5] m[9] m[13] | | v[1] | M(v) = |m[2] m[6] m[10] m[14] | x | v[2] | | | | | (m[3] m[7] m[11] m[15] ) ( v[3] ) Where 'x' 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 fglLoadMatrix is executed between the execution of fglBegin and the corresponding execution of fglEnd. ASSOCIATED GETS fglGet with argument GL_MATRIX_MODE fglGet with argument GL_MODELVIEW_MATRIX fglGet with argument GL_PROJECTION_MATRIX fglGet with argument GL_TEXTURE_MATRIX SEE ALSO fglLoadIdentity, fglMatrixMode, fglMultMatrix, fglPushMatrix