42 lines
No EOL
1.1 KiB
Elm
42 lines
No EOL
1.1 KiB
Elm
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module Matrix2D where
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import Native.Matrix2D
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data Matrix2D = Matrix2D
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-- Create an identity matrix.
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--
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-- / 1 0 \\
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-- \\ 0 1 /
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identity : Matrix2D
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identity = Native.Matrix2D.identity
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-- Creates an arbitrary matrix. This lets you create scales, shears, reflections,
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-- translations, or any other 2D transform.
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--
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-- matrix a b c d dx dy
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--
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-- / a b \\
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-- \\ c d /
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--
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-- And `dx` and `dy` are the translation values.
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matrix : Float -> Float -> Float -> Float -> Float -> Float -> Matrix2D
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matrix = Native.Matrix2D.matrix
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-- Creates a [rotation matrix](http://en.wikipedia.org/wiki/Rotation_matrix).
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-- Given an angle t, it creates a counterclockwise rotation matrix:
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--
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-- / cos t -sin t \\
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-- \\ sin t cos t /
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rotation : Float -> Matrix2D
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rotation = Native.Matrix2D.rotation
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-- Multiplies two matrices together:
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--
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-- multiply a b
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--
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-- / a11 a12 \\ . / b11 b12 \\
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-- \\ a21 a22 / \\ b21 b22 /
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multiply : Matrix2D -> Matrix2D -> Matrix2D
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multiply = Native.Matrix2D.multiply |