NAME

DoShear − Create a shear geometric transformation object

SYNOPSIS

C:

DtObject DoShear(plane, firstdirectionshearvalue,
seconddirectionshearvalue)
DtMajorPlane plane;
DtReal firstdirectionshearvalue, seconddirectionshearvalue;

FORTRAN:

INTEGER∗4 DOSHR(PLANE, D1SHRV, D2SHRV)
INTEGER∗4 PLANE
REAL∗8 D1SHRV, D2SHRV

DESCRIPTION

DoShear creates a shear geometric transformation object that modifies the current transformation matrix.  It results in a directional shear about a major plane specified by the parameter plane.  Possible values for plane are:

DcXY <DCXY>
Z = 0.0

DcYZ <DCYZ>
X = 0.0

DcXZ <DCXZ>
Y = 0.0

The parameter firstdirectionshearvalue specifies the shearing in the first direction of plane, and the parameter seconddirectionshearvalue specifies the shearing the second directions of plane.  For example, let plane be DcXY <DCXY>.  Then firstdirectionshearvalue is the X-direction and seconddirectionshearvalue is the Y-direction. 

SEE ALSO

DoLookAtFrom(3D), DoScale(3D), DoRotate(3D), DoTransformMatrix(3D), DoTranslate(3D)

September 02, 1992