NAME

       wxGraphicsMatrix - Functions for wxGraphicsMatrix class

DESCRIPTION

       A  wxGraphicsMatrix  is  a  native  representation  of  an affine matrix. The contents are
       specific and private to the  respective  renderer.  Instances  are  ref  counted  and  can
       therefore   be  assigned  as  usual.  The  only  way  to  get  a  valid  instance  is  via
       wxGraphicsContext:createMatrix/2 or wxGraphicsRenderer:createMatrix/2.

       This class is derived (and can use functions) from: wxGraphicsObject

       wxWidgets docs: wxGraphicsMatrix

DATA TYPES

       wxGraphicsMatrix() = wx:wx_object()

EXPORTS

       concat(This, T) -> ok

              Types:

                 This = T = wxGraphicsMatrix()

              Concatenates the matrix passed with the current matrix.

              The effect of the resulting transformation is to first apply the transformation  in
              t to the coordinates and then apply the transformation in the current matrix to the
              coordinates.

       get(This) -> Result

              Types:

                 Result =
                     {A :: number(),
                      B :: number(),
                      C :: number(),
                      D :: number(),
                      Tx :: number(),
                      Ty :: number()}
                 This = wxGraphicsMatrix()

              Returns the component values of the matrix via the argument pointers.

       invert(This) -> ok

              Types:

                 This = wxGraphicsMatrix()

              Inverts the matrix.

       isEqual(This, T) -> boolean()

              Types:

                 This = T = wxGraphicsMatrix()

              Returns true if the elements of the transformation matrix are equal.

       isIdentity(This) -> boolean()

              Types:

                 This = wxGraphicsMatrix()

              Return true if this is the identity matrix.

       rotate(This, Angle) -> ok

              Types:

                 This = wxGraphicsMatrix()
                 Angle = number()

              Rotates this matrix clockwise (in radians).

       scale(This, XScale, YScale) -> ok

              Types:

                 This = wxGraphicsMatrix()
                 XScale = YScale = number()

              Scales this matrix.

       translate(This, Dx, Dy) -> ok

              Types:

                 This = wxGraphicsMatrix()
                 Dx = Dy = number()

              Translates this matrix.

       set(This) -> ok

              Types:

                 This = wxGraphicsMatrix()

       set(This, Options :: [Option]) -> ok

              Types:

                 This = wxGraphicsMatrix()
                 Option =
                     {a, number()} |
                     {b, number()} |
                     {c, number()} |
                     {d, number()} |
                     {tx, number()} |
                     {ty, number()}

              Sets the matrix to the respective values (default values are the identity matrix).

       transformPoint(This) -> {X :: number(), Y :: number()}

              Types:

                 This = wxGraphicsMatrix()

              Applies this matrix to a point.

       transformDistance(This) -> {Dx :: number(), Dy :: number()}

              Types:

                 This = wxGraphicsMatrix()

              Applies this matrix to a distance (ie.

              performs all transforms except translations).