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Size: 1.74 KB
Versions: 100
Compression:
Stored size: 1.74 KB
Contents
# -*- encoding: utf-8 -*-
require 'test_helper'
require 'hexapdf/content/transformation_matrix'
describe HexaPDF::Content::TransformationMatrix do
before do
@matrix = HexaPDF::Content::TransformationMatrix.new
end
describe "initialize" do
it "initializes to the identity matrix" do
assert_equal(1, @matrix.a)
assert_equal(0, @matrix.b)
assert_equal(0, @matrix.c)
assert_equal(1, @matrix.d)
assert_equal(0, @matrix.e)
assert_equal(0, @matrix.f)
end
it "can use arbitrary values" do
@matrix = HexaPDF::Content::TransformationMatrix.new(2, 3, 4, 5, 6, 7)
assert_equal(2, @matrix.a)
assert_equal(3, @matrix.b)
assert_equal(4, @matrix.c)
assert_equal(5, @matrix.d)
assert_equal(6, @matrix.e)
assert_equal(7, @matrix.f)
end
end
it "correctly evaluates a point" do
assert_equal([2, 3], @matrix.evaluate(2, 3))
end
it "correctly translates the matrix" do
@matrix.translate(5, 10)
assert_equal([7, 13], @matrix.evaluate(2, 3))
end
it "correctly rotates the matrix" do
@matrix.rotate(90)
assert_equal([-3, 2], @matrix.evaluate(2, 3))
end
it "correctly scales the matrix" do
@matrix.scale(5, 10)
assert_equal([10, 30], @matrix.evaluate(2, 3))
end
it "correctly skews the matrix" do
assert_equal([2, 5], @matrix.dup.skew(45, 0).evaluate(2, 3))
assert_equal([5, 3], @matrix.dup.skew(0, 45).evaluate(2, 3))
end
it "can be compared to another matrix" do
assert_equal(HexaPDF::Content::TransformationMatrix.new, @matrix)
refute_equal(HexaPDF::Content::TransformationMatrix.new(5), @matrix)
end
it "allows the conversion of the matrix into an array" do
assert_equal([1, 0, 0, 1, 0, 0], @matrix.to_a)
end
end
Version data entries
100 entries across 100 versions & 1 rubygems