Update FontTools to 4.31.2 to gain access to iterSubTables.

Needed to facilitate implementation of additional emoji font validation.

Ran tools/external_updater/updater.sh update fonttools

Bug: 226676748
Test: will run presubmit
Test: m fontchain_lint
Change-Id: I1207eea8394848bd2ef5040de9aebc8f940b1d96

1 files changed, 18 insertions, 2 deletions

diff --git a/Tests/misc/bezierTools_test.py b/Tests/misc/bezierTools_test.py
index c5cd1b73..da73375d 100644
--- a/Tests/misc/bezierTools_test.py
+++ b/Tests/misc/bezierTools_test.py
@@ -1,6 +1,8 @@
+import fontTools.misc.bezierTools as bezierTools
 from fontTools.misc.bezierTools import (
-    calcQuadraticBounds, calcCubicBounds, segmentPointAtT, splitLine, splitQuadratic,
-    splitCubic, splitQuadraticAtT, splitCubicAtT, solveCubic)
+    calcQuadraticBounds, calcCubicBounds, curveLineIntersections,
+    segmentPointAtT, splitLine, splitQuadratic, splitCubic, splitQuadraticAtT,
+    splitCubicAtT, solveCubic)
 import pytest
 
 
@@ -148,3 +150,17 @@ _segmentPointAtT_testData = [
 def test_segmentPointAtT(segment, t, expectedPoint):
     point = segmentPointAtT(segment, t)
     assert expectedPoint == point
+
+
+def test_intersections_straight_line():
+    curve = ((548, 183), (548, 289), (450, 366), (315, 366))
+    line1 = ((330, 376), (330, 286))
+    pt = curveLineIntersections(curve, line1)[0][0]
+    assert pt[0] == 330
+    line = (pt, (330, 286))
+    pt2 = (330.0001018806911, 295.5635754579425)
+    assert bezierTools._line_t_of_pt(*line, pt2) > 0
+    s = (19, 0)
+    e = (110, 0)
+    pt = (109.05194805194802, 0.0)
+    assert bezierTools._line_t_of_pt(s, e, pt) == pytest.approx(0.98958184)