From 5ee499ebffd6abc0e4eefe8ce9f892fcca2c9b3a Mon Sep 17 00:00:00 2001
From: Matthew Roush <matthew.roush@proton.me>
Date: Fri, 31 Jul 2026 14:56:51 -0400
Subject: [PATCH] [rshapes] Update `DrawRectangleRoundedLinesEx()`

Make the outline vertices easier to work with.
---
 src/rshapes.c | 57 +++++++++++++++++++++++++++++++++------------------
 1 file changed, 37 insertions(+), 20 deletions(-)

diff --git a/src/rshapes.c b/src/rshapes.c
index 28e0dd007..fa357c3be 100644
--- a/src/rshapes.c
+++ b/src/rshapes.c
@@ -1052,30 +1052,47 @@ void DrawRectangleRoundedLinesEx(Rectangle rec, float roundness, int segments, f
           \\ P13              P12 //
            P5 ================== P4
     */
+
+    // The x-coordinates used for the outline
+    const float x0 = (float)rec.x + innerRadius + 0.5f;
+    const float x1 = (float)(rec.x + rec.width) - innerRadius - 0.5f;
+    const float x2 = rec.x + rec.width + thick - 0.5f;
+    const float x3 = rec.x - thick + 0.5f;
+    const float x4 = rec.x + rec.width - 0.5f;
+    const float x5 = rec.x + 0.5f;
+
+    // The y-coordinates used for the outline
+    const float y0 = rec.y - thick + 0.5f;
+    const float y1 = (float)rec.y + innerRadius + 0.5f;
+    const float y2 = (float)(rec.y + rec.height) - innerRadius - 0.5f;
+    const float y3 = rec.y + rec.height + thick - 0.5f;
+    const float y4 = rec.y + 0.5f;
+    const float y5 = rec.y + rec.height - 0.5f;
+
     const Vector2 point[16] = {
-        {(float)rec.x + innerRadius + 0.5f, rec.y - thick + 0.5f},
-        {(float)(rec.x + rec.width) - innerRadius - 0.5f, rec.y - thick + 0.5f},
-        {rec.x + rec.width + thick - 0.5f, (float)rec.y + innerRadius + 0.5f}, // PO, P1, P2
-        {rec.x + rec.width + thick - 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f},
-        {(float)(rec.x + rec.width) - innerRadius - 0.5f, rec.y + rec.height + thick - 0.5f}, // P3, P4
-        {(float)rec.x + innerRadius + 0.5f, rec.y + rec.height + thick - 0.5f},
-        {rec.x - thick + 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f},
-        {rec.x - thick + 0.5f, (float)rec.y + innerRadius + 0.5f}, // P5, P6, P7
-        {(float)rec.x + innerRadius + 0.5f, rec.y + 0.5f},
-        {(float)(rec.x + rec.width) - innerRadius - 0.5f, rec.y + 0.5f}, // P8, P9
-        {rec.x + rec.width - 0.5f, (float)rec.y + innerRadius + 0.5f},
-        {rec.x + rec.width - 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f}, // P10, P11
-        {(float)(rec.x + rec.width) - innerRadius - 0.5f, rec.y + rec.height - 0.5f},
-        {(float)rec.x + innerRadius + 0.5f, rec.y + rec.height - 0.5f}, // P12, P13
-        {rec.x + 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f},
-        {rec.x + 0.5f, (float)rec.y + innerRadius + 0.5f} // P14, P15
+        {x0, y0}, // P0
+        {x1, y0}, // P1
+        {x2, y1}, // P2
+        {x2, y2}, // P3
+        {x1, y3}, // P4
+        {x0, y3}, // P5
+        {x3, y2}, // P6
+        {x3, y1}, // P7
+        {x0, y4}, // P8
+        {x1, y4}, // P9
+        {x4, y1}, // P10
+        {x4, y2}, // P11
+        {x1, y5}, // P12
+        {x0, y5}, // P13
+        {x5, y2}, // P14
+        {x5, y1}  // P15
     };
 
     const Vector2 centers[4] = {
-        {(float)rec.x + innerRadius + 0.5f, (float)rec.y + innerRadius + 0.5f},
-        {(float)(rec.x + rec.width) - innerRadius - 0.5f, (float)rec.y + innerRadius + 0.5f}, // P16, P17
-        {(float)(rec.x + rec.width) - innerRadius - 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f},
-        {(float)rec.x + innerRadius + 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f} // P18, P19
+        {x0, y1}, // P16
+        {x1, y1}, // P17
+        {x1, y2}, // P18
+        {x0, y2}  // P19
     };
 
     const float angles[4] = { 180.0f, 270.0f, 0.0f, 90.0f };