text: # Copyright 2020 Google LLC
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from picosvg.svg_types import SVGCircle, SVGPath, SVGRect
  from picosvg.svg_transform import Affine2D
  from picosvg.svg_reuse import normalize, affine_between
  import pytest
  
  
  @pytest.mark.parametrize(
      "shape, tolerance, expected_normalization",
      [
          # Real example from Noto Emoji, eyes that were normalizing everything to have 0,0 coords
          # Caused by initial M and L having same coords, creating a 0-magnitude vec
          (
              SVGPath(
                  d="M44.67,45.94 L44.67,45.94 C40.48,45.94 36.67,49.48 36.67,55.36 C36.67,61.24 40.48,64.77 44.67,64.77 L44.67,64.77 C48.86,64.77 52.67,61.23 52.67,55.36 C52.67,49.49 48.86,45.94 44.67,45.94 Z"
              ),
              0.1,
              "M0,0 l0,0 c0.2,-0.3 0.6,-0.3 1,0 c0.4,0.3 0.4,0.7 0.2,1 l0,0 c-0.2,0.3 -0.6,0.3 -1,0 c-0.4,-0.3 -0.4,-0.7 -0.2,-1 z",
          ),
          # https://github.com/googlefonts/picosvg/issues/249
          (SVGPath(d="M-1,-1 L 0,1 L 1, -1 z"), 0.1, "M0,0 l1,0 l-0.6,1 z"),
      ],
  )
  def test_svg_normalization(shape, tolerance, expected_normalization):
      normalized = normalize(shape, tolerance)
      assert normalized.round_floats(4).d == expected_normalization
  
  
  @pytest.mark.parametrize(
      "s1, s2, expected_affine, tolerance",
      [
          # a rect and a circle can never be the same!
          (SVGRect(width=1, height=1), SVGCircle(r=1), None, 0.01),
          # same rect in the same place ftw
          (
              SVGRect(width=1, height=1),
              SVGRect(width=1, height=1),
              Affine2D.identity(),
              0.01,
          ),
          # same rect in the same place, different id
          (
              SVGRect(id="duck", width=1, height=1),
              SVGRect(id="duck", width=1, height=1),
              Affine2D.identity(),
              0.01,
          ),
          # same rect, offset
          (
              SVGRect(x=0, y=1, width=1, height=1),
              SVGRect(x=1, y=0, width=1, height=1),
              Affine2D.identity().translate(1, -1),
              0.01,
          ),
          # different rects
          (
              SVGRect(x=20, y=20, width=100, height=20),
              SVGRect(x=40, y=30, width=60, height=20),
              Affine2D(a=0.6, b=0.0, c=0.0, d=1.0, e=28.0, f=10.0),
              0.01,
          ),
          # circles that may happen to match the ones Noto clock emoji
          (
              SVGCircle(cx=15.89, cy=64.13, r=4),
              SVGCircle(cx=64.89, cy=16.13, r=4),
              Affine2D.identity().translate(49, -48),
              0.01,
          ),
          # path observed in wild to normalize but not compute affine_between
          # caused by failure to normalize equivalent d attributes in affine_between
          (
              SVGPath(
                  fill="#99AAB5", d="M18 12H2 c-1.104 0-2 .896-2 2h20c0-1.104-.896-2-2-2z"
              ),
              SVGPath(
                  fill="#99AAB5", d="M34 12H18c-1.104 0-2 .896-2 2h20c0-1.104-.896-2-2-2z"
              ),
              Affine2D.identity().translate(16, 0),
              0.01,
          ),
          # Triangles facing one another, same size
          (
              SVGPath(d="m60,64 -50,-32 0,30 z"),
              SVGPath(d="m68,64 50,-32 0,30 z"),
              Affine2D(-1.0, 0.0, 0.0, 1.0, 128.0, -0.0),
              0.01,
          ),
          # Triangles, different rotation, different size
          (
              SVGPath(d="m50,100 -48,-75 81,0 z"),
              SVGPath(d="m70,64 50,-32 0,54 z"),
              Affine2D(a=-0.0, b=0.6667, c=-0.6667, d=-0.0, e=136.6667, f=30.6667),
              0.01,
          ),
          # TODO triangles, one point stretched not aligned with X or Y
          # A square and a rect; different scale for each axis
          (
              SVGRect(x=10, y=10, width=50, height=50),
              SVGRect(x=70, y=20, width=20, height=100),
              Affine2D(a=0.4, b=0.0, c=0.0, d=2.0, e=66.0, f=0.0),
              0.01,
          ),
          # Squares with same first edge but flipped on Y
          (
              SVGPath(d="M10,10 10,60 60,60 60,10 z"),
              SVGPath(d="M70,120 90,120 90,20 70,20 z"),
              Affine2D(a=0.0, b=-2.0, c=0.4, d=0.0, e=66.0, f=140.0),
              0.01,
          ),
          # Real example from Noto Emoji (when tolerance was 0.1), works at 0.2
          # https://github.com/googlefonts/picosvg/issues/138
          (
              SVGPath(
                  d="M98.267,28.379 L115.157,21.769 Q116.007,21.437 116.843,21.802 Q117.678,22.168 118.011,23.017 Q118.343,23.867 117.978,24.703 Q117.612,25.538 116.763,25.871 L99.873,32.481 Q99.023,32.813 98.187,32.448 Q97.352,32.082 97.019,31.233 Q96.687,30.383 97.052,29.547 Q97.418,28.712 98.267,28.379 Z"
              ),
              SVGPath(
                  d="M81.097,20.35 L79.627,4.2 Q79.544,3.291 80.128,2.59 Q80.712,1.889 81.62,1.807 Q82.529,1.724 83.23,2.308 Q83.931,2.892 84.013,3.8 L85.483,19.95 Q85.566,20.859 84.982,21.56 Q84.398,22.261 83.49,22.343 Q82.581,22.426 81.88,21.842 Q81.179,21.258 81.097,20.35 Z"
              ),
              Affine2D(a=0.249, b=-0.859, c=0.859, d=0.249, e=32.255, f=97.667),
              0.2,
          ),
          # Real example from Noto Emoji, eyes that were normalizing everything to have 0,0 coords
          (
              SVGPath(
                  d="M44.67,45.94L44.67,45.94 c-4.19,0-8,3.54-8,9.42 s3.81,9.41,8,9.41l0,0 c4.19,0,8-3.54,8-9.41 S48.86,45.94,44.67,45.94z"
              ),
              SVGPath(
                  d="M83,45.94   L83,45.94    c-4.19,0-8,3.54-8,9.42 s3.81,9.41,8,9.41l0,0 c4.19,0,8-3.54,8-9.41 S87.21,45.94,83,45.94z"
              ),
              Affine2D.identity().translate(38.33, 0.0),
              0.1,
          ),
      ],
  )
  def test_svg_reuse(s1, s2, expected_affine, tolerance):
      # if we can get an affine we should normalize to same shape
      if expected_affine:
          assert normalize(s1, tolerance) == normalize(s2, tolerance)
      else:
          assert normalize(s1, tolerance) != normalize(s2, tolerance)
  
      affine = affine_between(s1, s2, tolerance)
      if expected_affine:
          assert (
              affine
          ), f"No affine found between {s1.as_path().d} and {s2.as_path().d}. Expected {expected_affine}"
          # Round because we've seen issues with different test environments when overly fine
          affine = affine.round(4)
      assert (
          affine == expected_affine
      ), f"Unexpected affine found between {s1.as_path().d} and {s2.as_path().d}."
  