From e0d4cc314326f2c6d0390609df18d2e862c18a3a Mon Sep 17 00:00:00 2001
From: Ray <raysan5@gmail.com>
Date: Thu, 9 Jan 2020 18:34:20 +0100
Subject: [PATCH] ADDED: DrawPolyLines()

---
 src/raylib.h |  1 +
 src/shapes.c | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/src/raylib.h b/src/raylib.h
index 018779a1..b3d5c144 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -1070,6 +1070,7 @@ RLAPI void DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, Color color);
 RLAPI void DrawTriangleFan(Vector2 *points, int numPoints, Color color);                                 // Draw a triangle fan defined by points (first vertex is the center)
 RLAPI void DrawTriangleStrip(Vector2 *points, int pointsCount, Color color);                             // Draw a triangle strip defined by points
 RLAPI void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color);               // Draw a regular polygon (Vector version)
+RLAPI void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color);          // Draw a polygon outline of n sides
 
 RLAPI void SetShapesTexture(Texture2D texture, Rectangle source);                                        // Define default texture used to draw shapes
 
diff --git a/src/shapes.c b/src/shapes.c
index bdc6ae0c..43037562 100644
--- a/src/shapes.c
+++ b/src/shapes.c
@@ -1346,6 +1346,31 @@ void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color col
     rlPopMatrix();
 }
 
+// Draw a polygon outline of n sides
+void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color)
+{
+    if (sides < 3) sides = 3;
+    float centralAngle = 0.0f;
+
+    if (rlCheckBufferLimit(3*(360/sides))) rlglDraw();
+
+    rlPushMatrix();
+        rlTranslatef(center.x, center.y, 0.0f);
+        rlRotatef(rotation, 0.0f, 0.0f, 1.0f);
+        
+        rlBegin(RL_LINES);
+            for (int i = 0; i < sides; i++)
+            {
+                rlColor4ub(color.r, color.g, color.b, color.a);
+
+                rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius);
+                centralAngle += 360.0f/(float)sides;
+                rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius);
+            }
+        rlEnd();
+    rlPopMatrix();
+}
+
 // Define default texture used to draw shapes
 void SetShapesTexture(Texture2D texture, Rectangle source)
 {