From 12d72363cb58d3afed33bb33d690c6aa6c4bc015 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Fri, 19 Aug 2016 05:05:48 -0500
Subject: [PATCH] Do Delta radius check without sqrt
---
Marlin/Marlin_main.cpp | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 0c64defb2a..3fa9725d50 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -3667,8 +3667,7 @@ inline void gcode_G28() {
#if ENABLED(DELTA)
// Avoid probing outside the round or hexagonal area of a delta printer
- float distance_from_center = HYPOT(xProbe, yProbe);
- if (distance_from_center > DELTA_PROBEABLE_RADIUS) continue;
+ if (sq(xProbe) + sq(yProbe) > sq(DELTA_PROBEABLE_RADIUS)) continue;
#endif
float measured_z = probe_pt(xProbe, yProbe, stow_probe_after_each, verbose_level);
--
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