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\alias{cairo-cairo-matrix-t}
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\name{cairo-cairo-matrix-t}
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\description{Generic matrix operations}
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\section{Methods and Functions}{
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\code{\link{cairoMatrixInit}(xx, yx, xy, yy, x0, y0)}\cr
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\code{\link{cairoMatrixInitIdentity}()}\cr
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\code{\link{cairoMatrixInitTranslate}(tx, ty)}\cr
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\code{\link{cairoMatrixInitScale}(sx, sy)}\cr
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\code{\link{cairoMatrixInitRotate}(radians)}\cr
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\code{\link{cairoMatrixTranslate}(matrix, tx, ty)}\cr
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\code{\link{cairoMatrixScale}(matrix, sx, sy)}\cr
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\code{\link{cairoMatrixRotate}(matrix, radians)}\cr
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\code{\link{cairoMatrixInvert}(matrix)}\cr
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\code{\link{cairoMatrixMultiply}(result, a, b)}\cr
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\code{\link{cairoMatrixTransformDistance}(matrix, dx, dy)}\cr
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\code{\link{cairoMatrixTransformPoint}(matrix, x, y)}\cr
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\section{Detailed Description}{\verb{\link{CairoMatrix}} is used throughout cairo to convert between different
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coordinate spaces. A \verb{\link{CairoMatrix}} holds an affine transformation,
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such as a scale, rotation, shear, or a combination of these.
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The transformation of a point (\code{x},\code{y})
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\preformatted{ x_new = xx * x + xy * y + x0;
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y_new = yx * x + yy * y + y0;
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The current transformation matrix of a \verb{\link{Cairo}}, represented as a
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\verb{\link{CairoMatrix}}, defines the transformation from user-space
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coordinates to device-space coordinates. See \code{\link{cairoGetMatrix}} and
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\code{\link{cairoSetMatrix}}.
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\section{Structures}{\describe{\item{\verb{CairoMatrix}}{
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A \verb{\link{CairoMatrix}} holds an affine transformation, such as a scale,
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rotation, shear, or a combination of those. The transformation of
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a point (x, y) is given by:
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\preformatted{ x_new = xx * x + xy * y + x0;
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y_new = yx * x + yy * y + y0;
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\item{\verb{xx}}{[numeric] xx component of the affine transformation}
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\item{\verb{yx}}{[numeric] yx component of the affine transformation}
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\item{\verb{xy}}{[numeric] xy component of the affine transformation}
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\item{\verb{yy}}{[numeric] yy component of the affine transformation}
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\item{\verb{x0}}{[numeric] X translation component of the affine transformation}
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\item{\verb{y0}}{[numeric] Y translation component of the affine transformation}
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\references{\url{http://www.cairographics.org/manual/cairo-cairo-matrix-t.html}}
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\author{Derived by RGtkGen from GTK+ documentation}
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man/cairo-cairo-matrix-t.Rd
