From c40e29bca38660781488dd5fee5ef7b950253d80 Mon Sep 17 00:00:00 2001
From: Patrik Buhring <patrikbuhring@yahoo.com>
Date: Fri, 28 Aug 2020 19:52:06 -0400
Subject: [PATCH] Update icosphere dependency and add a limit to subdivisions.
 (#379)

---
 crates/bevy_render/Cargo.toml       | 2 +-
 crates/bevy_render/src/mesh/mesh.rs | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/crates/bevy_render/Cargo.toml b/crates/bevy_render/Cargo.toml
index 5d7c1324ef8bd..75cc5a9b96321 100644
--- a/crates/bevy_render/Cargo.toml
+++ b/crates/bevy_render/Cargo.toml
@@ -38,7 +38,7 @@ once_cell = "1.4.0"
 downcast-rs = "1.1.1"
 thiserror = "1.0"
 anyhow = "1.0"
-hexasphere = "0.1.5"
+hexasphere = "1.0.0"
 parking_lot = "0.10"
 
 [features]
diff --git a/crates/bevy_render/src/mesh/mesh.rs b/crates/bevy_render/src/mesh/mesh.rs
index 585b0e9e01b1a..73ff1a55f310d 100644
--- a/crates/bevy_render/src/mesh/mesh.rs
+++ b/crates/bevy_render/src/mesh/mesh.rs
@@ -411,6 +411,15 @@ pub mod shape {
 
     impl From<Icosphere> for Mesh {
         fn from(sphere: Icosphere) -> Self {
+            if sphere.subdivisions >= 80 {
+                let temp_sphere = Hexasphere::new(sphere.subdivisions, |_| ());
+
+                panic!(
+                    "Cannot create an icosphere of {} subdivisions due to there being too many vertices being generated: {} (Limited to 65535 vertices or 79 subdivisions)",
+                    sphere.subdivisions,
+                    temp_sphere.raw_points().len()
+                );
+            }
             let hexasphere = Hexasphere::new(sphere.subdivisions, |point| {
                 let inclination = point.z().acos();
                 let azumith = point.y().atan2(point.x());