From 4526b6a7ea6a5ca771012c795d4ad83f7f35c533 Mon Sep 17 00:00:00 2001
From: Seb James <sebj_coder3@pm.me>
Date: Tue, 9 Dec 2025 10:45:30 +0000
Subject: [PATCH 1/2] Fixes a labels issue with updating coordarrows lengths.
 Also adds important example code in coordarrows.cpp

---
 examples/coordarrows.cpp | 14 +++++++++++---
 mplot/VisualBase.h       |  3 +++
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/examples/coordarrows.cpp b/examples/coordarrows.cpp
index a53ee0ff..9b5356c7 100644
--- a/examples/coordarrows.cpp
+++ b/examples/coordarrows.cpp
@@ -11,6 +11,12 @@ int main()
     mplot::Visual v(1024, 768, "Coordinate Arrows");
     v.showCoordArrows (true); // Shows the 'scene' coordarrows, that you get in every mplot::Visual
     v.lightingEffects(true);
+    // You can update the coord arrows lengths and thickness scaling factor for the main CoordArrows
+    // if you want to. This updates to the defaults, and so is what you'd get if you left the call
+    // out:
+    v.updateCoordLengths ({ 0.1f, 0.1f, 0.1f }, 1.0f);
+    // This alternative makes the coordinate arrows longer:
+    // v.updateCoordLengths ({ 0.2f, 0.2f, 0.2f }, 1.0f);
 
     // An extra CoordArrows model, with defaults
     sm::vec<float> offset = {};
@@ -19,9 +25,11 @@ int main()
     cavm->finalize();
     v.addVisualModel (cavm);
 
-    sm::vec<float> ux = {1,0,0};
-    sm::vec<float> uy = {0,1,0};
-    sm::vec<float> uz = {0,0,1};
+    // I define unit vector here, because it makes the calls to CoordArrows::init easy to read, but
+    // you can also use sm::vec<float>::ux(), etc to get static, constexpr unit vectors
+    constexpr sm::vec<float> ux = {1,0,0};
+    constexpr sm::vec<float> uy = {0,1,0};
+    constexpr sm::vec<float> uz = {0,0,1};
 
     // An CoordArrows model, with non-defaults
     offset[0] += 1.5f;
diff --git a/mplot/VisualBase.h b/mplot/VisualBase.h
index de7dff63..79e85206 100644
--- a/mplot/VisualBase.h
+++ b/mplot/VisualBase.h
@@ -397,10 +397,13 @@ namespace mplot
             this->coordArrows->reinit();
         }
 
+        // Update the lengths of the CoordArrows that (usually) appear in the corner of the screen
         void updateCoordLengths (const sm::vec<float, 3>& _lengths, const float _thickness = 1.0f)
         {
             this->coordArrows->lengths = _lengths;
             this->coordArrows->thickness = _thickness;
+            this->coordArrows->clear();
+            this->coordArrows->initAxisLabels();
             this->coordArrows->reinit();
         }
 

From 6abe8f0046036954e527d53b7c4ff5eff28d0a42 Mon Sep 17 00:00:00 2001
From: Seb James <sebj_coder3@pm.me>
Date: Tue, 9 Dec 2025 11:54:22 +0000
Subject: [PATCH 2/2] English/typos

---
 examples/coordarrows.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/coordarrows.cpp b/examples/coordarrows.cpp
index 9b5356c7..393f49e3 100644
--- a/examples/coordarrows.cpp
+++ b/examples/coordarrows.cpp
@@ -25,8 +25,8 @@ int main()
     cavm->finalize();
     v.addVisualModel (cavm);
 
-    // I define unit vector here, because it makes the calls to CoordArrows::init easy to read, but
-    // you can also use sm::vec<float>::ux(), etc to get static, constexpr unit vectors
+    // I define some unit vectors here, because it makes the calls to CoordArrows::init easy to
+    // read, but you can also use sm::vec<float>::ux(), etc to get static, constexpr unit vectors
     constexpr sm::vec<float> ux = {1,0,0};
     constexpr sm::vec<float> uy = {0,1,0};
     constexpr sm::vec<float> uz = {0,0,1};