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glLoadMatrix(3G)
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glLoadMatrix, glLoadMatrixd, glLoadMatrixf - replace the
current matrix with the specified matrix
void glLoadMatrixd(
const GLdouble *m ); void glLoadMatrixf(
const GLfloat *m );
Specifies a pointer to 16 consecutive values, which are
used as the elements of a 4 times 4 column-major matrix.
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[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) =
times
m[2] m[6] m[10] m[14] v[2]
m[3] m[7] m[11] m[15] v[3]
Where ``times'' denotes matrix multiplication.
Projection and texture transformations are similarly
defined.
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.
GL_INVALID_OPERATION is generated if glLoadMatrix() is
executed between the execution of glBegin() and the corresponding
execution of glEnd().
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
glLoadIdentity(3), glMatrixMode(3), glMultMatrix(3),
glPushMatrix(3)
glLoadMatrix(3G)
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