From 40d1dab7681a119fabc376e81a43f79b5e2de7ef Mon Sep 17 00:00:00 2001
From: Johannes Wolf <mail@johannes-wolf.com>
Date: Sat, 7 Dec 2024 13:42:15 +0100
Subject: [PATCH 1/2] canvas: Panic if length is infinite

---
 src/canvas.typ                  | 2 ++
 src/path-util.typ               | 2 +-
 tests/decorations/path/test.typ | 8 ++++++++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/canvas.typ b/src/canvas.typ
index bb4ca973..9fd07cc2 100644
--- a/src/canvas.typ
+++ b/src/canvas.typ
@@ -32,6 +32,8 @@
   }
   assert(length / 1cm != 0,
     message: "Canvas length must be != 0!")
+  assert(not float.is-infinite(length / 1cm),
+    message: "Length must not be infinite!")
 
   let ctx = (
     version: version.version,
diff --git a/src/path-util.typ b/src/path-util.typ
index 02af4b81..5a07c00f 100644
--- a/src/path-util.typ
+++ b/src/path-util.typ
@@ -260,7 +260,7 @@
     }
   }
 
-  let segment = segment-at-t(segments, t, samples: samples, rev: rev)
+  let segment = segment-at-t(segments, t, samples: samples, rev: rev, clamp: true)
   return if segment != none {
     let (distance, segment, length, ..) = segment
     _point-on-segment(segment, if rev { length - distance } else { distance }, samples: samples, extrapolate: extrapolate)
diff --git a/tests/decorations/path/test.typ b/tests/decorations/path/test.typ
index 9090fdc1..690661bb 100644
--- a/tests/decorations/path/test.typ
+++ b/tests/decorations/path/test.typ
@@ -90,3 +90,11 @@
 
   wave(line((0,0), (4,0)), segments: 1)
 })
+
+// Bug #757: Coil only works with specific order
+#test-case({
+  import draw: *
+  let a = (1, 0)
+  let b = (0.12, 0.4)
+  coil(hobby(b, a), amplitude:0.21, segment-length:0.05112, align:"MID")
+})

From 157ed704df3d01379117a1b83c58edc86ee12c18 Mon Sep 17 00:00:00 2001
From: Johannes Wolf <mail@johannes-wolf.com>
Date: Sat, 7 Dec 2024 13:44:58 +0100
Subject: [PATCH 2/2] tests: Add test case for bug #757

---
 tests/decorations/path/test.typ | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tests/decorations/path/test.typ b/tests/decorations/path/test.typ
index 690661bb..431cf38e 100644
--- a/tests/decorations/path/test.typ
+++ b/tests/decorations/path/test.typ
@@ -92,9 +92,9 @@
 })
 
 // Bug #757: Coil only works with specific order
-#test-case({
+#block(width: 10cm, canvas(length:10cm,{
   import draw: *
   let a = (1, 0)
-  let b = (0.12, 0.4)
-  coil(hobby(b, a), amplitude:0.21, segment-length:0.05112, align:"MID")
-})
+  let b = (0.12, 0.3)
+  coil(hobby(b,a),amplitude:0.051,segment-length:0.05112,align:"MID")
+}))