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Contents
module Prawn::SVG::Extensions
module AdditionalGradientTransforms
def gradient_coordinates(gradient)
# As of Prawn 2.2.0, apply_transformations is used as purely a boolean.
#
# Here we're using it to optionally pass in a 6-tuple transformation matrix that gets applied to the
# gradient. This should be added to Prawn properly, and then this monkey patch will not be necessary.
if gradient.apply_transformations.is_a?(Array)
x1, y1, x2, y2, transformation = super
a, b, c, d, e, f = transformation
na, nb, nc, nd, ne, nf = gradient.apply_transformations
matrix = Matrix[[a, c, e], [b, d, f], [0, 0, 1]] * Matrix[[na, nc, ne], [nb, nd, nf], [0, 0, 1]]
new_transformation = matrix.to_a[0..1].transpose.flatten
[x1, y1, x2, y2, new_transformation]
else
super
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems