improve fix - (pixel offset issue with DrawRectangleRoundedLinesEx)

raysan5 · Jan 8, 2025 · 2294c5c · 2294c5c
1 parent f8f2b1a
commit 2294c5c
Showing 1 changed file with 8 additions and 7 deletions.
diff --git a/src/rshapes.c b/src/rshapes.c
@@ -1141,7 +1141,8 @@ void DrawRectangleRoundedLinesEx(Rectangle rec, float roundness, int segments, f
     }
 
     float stepLength = 90.0f/(float)segments;
-    const float outerRadius = radius + lineThick, innerRadius = radius;
+    const float outerRadius = radius + lineThick - 0.5f;
+    const float innerRadius = radius - 0.5f;
 
     /*
     Quick sketch to make sense of all of this,
@@ -1162,20 +1163,20 @@ void DrawRectangleRoundedLinesEx(Rectangle rec, float roundness, int segments, f
     const Vector2 point[16] = {
         {(float)rec.x + innerRadius + 0.5f, rec.y - lineThick + 0.5f}, 
         {(float)(rec.x + rec.width) - innerRadius - 0.5f, rec.y - lineThick + 0.5f}, 
-        {rec.x + rec.width + lineThick - 0.5f, (float)rec.y + innerRadius - 0.5f}, // PO, P1, P2
-        {rec.x + rec.width + lineThick - 0.5f, (float)(rec.y + rec.height) - innerRadius + 0.5f}, 
+        {rec.x + rec.width + lineThick - 0.5f, (float)rec.y + innerRadius + 0.5f}, // PO, P1, P2
+        {rec.x + rec.width + lineThick - 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f}, 
         {(float)(rec.x + rec.width) - innerRadius - 0.5f, rec.y + rec.height + lineThick - 0.5f}, // P3, P4
         {(float)rec.x + innerRadius + 0.5f, rec.y + rec.height + lineThick - 0.5f}, 
         {rec.x - lineThick + 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f}, 
         {rec.x - lineThick + 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
+        {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
+        {rec.x + 0.5f, (float)(rec.y + rec.height) - innerRadius - 0.5f}, 
+        {rec.x + 0.5f, (float)rec.y + innerRadius + 0.5f} // P14, P15
     };
 
     const Vector2 centers[4] = {