From c149dd50884fd1198ab7bf10559d0825d0c77716 Mon Sep 17 00:00:00 2001
From: Emmett Lalish <elalish@gmail.com>
Date: Sun, 16 Feb 2025 22:06:15 +1300
Subject: [PATCH] fix default JS parameter binding for simplify (#1146)

fix default parameter binding
---
 bindings/wasm/bindings.cpp              | 2 +-
 bindings/wasm/bindings.js               | 4 ++++
 bindings/wasm/examples/bindings.test.ts | 6 ++++++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/bindings/wasm/bindings.cpp b/bindings/wasm/bindings.cpp
index c396b4e42..937743db3 100644
--- a/bindings/wasm/bindings.cpp
+++ b/bindings/wasm/bindings.cpp
@@ -129,7 +129,7 @@ EMSCRIPTEN_BINDINGS(whatever) {
       .function("numVert", &CrossSection::NumVert)
       .function("numContour", &CrossSection::NumContour)
       .function("_Bounds", &CrossSection::Bounds)
-      .function("simplify", &CrossSection::Simplify)
+      .function("_Simplify", &CrossSection::Simplify)
       .function("_Offset", &cross_js::Offset)
       .function("_ToPolygons", &CrossSection::ToPolygons)
       .function("hull",
diff --git a/bindings/wasm/bindings.js b/bindings/wasm/bindings.js
index e0daa3124..a42fc72b6 100644
--- a/bindings/wasm/bindings.js
+++ b/bindings/wasm/bindings.js
@@ -164,6 +164,10 @@ Module.setup = function() {
         delta, joinTypeToInt(joinType), miterLimit, circularSegments);
   };
 
+  Module.CrossSection.prototype.simplify = function(epsilon = 1e-6) {
+    return this._Simplify(epsilon);
+  };
+
   Module.CrossSection.prototype.extrude = function(
       height, nDivisions = 0, twistDegrees = 0.0, scaleTop = [1.0, 1.0],
       center = false) {
diff --git a/bindings/wasm/examples/bindings.test.ts b/bindings/wasm/examples/bindings.test.ts
index fc36d037e..a546f0359 100644
--- a/bindings/wasm/examples/bindings.test.ts
+++ b/bindings/wasm/examples/bindings.test.ts
@@ -25,4 +25,10 @@ suite('CrossSection Bindings', () => {
     expect(cs.numContour()).toEqual(1);
     expect(cs.area()).to.be.greaterThan(0);
   });
+
+  test('simplify argument is defaulted', () => {
+    const cs = manifoldModule.CrossSection.circle(1).simplify();
+    expect(cs.numContour()).toEqual(1);
+    expect(cs.area()).to.be.greaterThan(0);
+  });
 });
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