psMat¶
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psMat.identity()¶
- returns an identity matrix as a 6 element tuple 
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psMat.compose(mat1, mat2)¶
- returns a matrix which is the composition of the two input transformations 
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psMat.inverse(mat)¶
- returns a matrix which is the inverse of the input transformation. (Note: There will not always be an inverse) 
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psMat.rotate(theta)¶
- returns a matrix which will rotate by - theta.- thetais expressed in radians
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psMat.scale(x[, y])¶
- returns a matrix which will scale by - xin the horizontal direction and- yin the vertical. If- yis omitted, it will scale by the same amount (- x) in both directions
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psMat.skew(theta)¶
- returns a matrix which will skew by - theta(to produce an oblique font).- thetais expressed in radians
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psMat.translate(x, y)¶
- returns a matrix which will translate by - xin the horizontal direction and- yin the vertical