GLLOADMATRIX() GLLOADMATRIX() NAME glLoadMatrixd, glLoadMatrixf - replace the current matrix with the speci- fied 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 ele- ments 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, modelview ma- trix, or texture matrix, depending on the current matrix mode (see glMa- trixMode). The current matrix, M, defines a transformation of coordinates. For in- stance, 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 fol- lowing: down 130 {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_MODELVIEW_MATRIX glGet with argument GL_PROJECTION_MATRIX glGet with argument GL_TEXTURE_MATRIX SEE ALSO glLoadIdentity, glMatrixMode, glMultMatrix, glPushMatrix GLLOADMATRIX()
NAME | C SPECIFICATION | PARAMETERS | DESCRIPTION | NOTES | ERRORS | ASSOCIATED GETS | SEE ALSO
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