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https://github.com/SleepingInsomniac/pixelfaucet
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21 lines
501 B
Crystal
21 lines
501 B
Crystal
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require "./spec_helper"
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require "../src/transform2d"
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include PF
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describe Transform2d do
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describe "#translate" do
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it "creates the same matrix as matrix multiplication" do
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t = Transform2d.new
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t.translate(-1.0, -2.0).rotate(0.5).scale(1.1).translate(1.0, 2.0)
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m = Transform2d.translation(-1.0, -2.0)
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m = Transform2d.rotation(0.5) * m
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m = Transform2d.scale(1.1, 1.1) * m
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m = Transform2d.translation(1.0, 2.0) * m
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t.matrix.should eq(m)
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end
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end
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end
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