 | Gtk2Hs | Contents | Index |
| Graphics.Rendering.Cairo.Matrix |
|
| data Matrix = Matrix !Double !Double !Double !Double !Double !Double |
| type MatrixPtr = Ptr Matrix |
| identity :: Matrix |
| translate :: Double -> Double -> Matrix -> Matrix |
| scale :: Double -> Double -> Matrix -> Matrix |
| rotate :: Double -> Matrix -> Matrix |
| transformDistance :: Matrix -> (Double, Double) -> (Double, Double) |
| transformPoint :: Matrix -> (Double, Double) -> (Double, Double) |
| scalarMultiply :: Double -> Matrix -> Matrix |
| adjoint :: Matrix -> Matrix |
| invert :: Matrix -> Matrix |
Representation of a 2-D affine transformation. The Matrix type represents a 2x2 transformation matrix along with a translation vector. Matrix a1 a2 b1 b2 c1 c2 describes the transformation of a point with coordinates x,y that is defined by / x' \ = / a1 b1 \ / x \ + / c1 \ \ y' / \ a2 b2 / \ y / \ c2 / or x' = a1 * x + b1 * y + c1 y' = a2 * x + b2 * y + c2 | ||
| Constructors | ||
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 Instances | ||