REVIEWED: `CheckCollisionPointPoly()`

src/raylib.h

@@ -1213,7 +1213,7 @@ RLAPI bool CheckCollisionCircleRec(Vector2 center, float radius, Rectangle rec);
 RLAPI bool CheckCollisionPointRec(Vector2 point, Rectangle rec);                                         // Check if point is inside rectangle
 RLAPI bool CheckCollisionPointCircle(Vector2 point, Vector2 center, float radius);                       // Check if point is inside circle
 RLAPI bool CheckCollisionPointTriangle(Vector2 point, Vector2 p1, Vector2 p2, Vector2 p3);               // Check if point is inside a triangle
-RLAPI bool CheckCollisionPointPolygon(Vector2 point, Vector2* vertices, int verticesCount);              // Check if point is within a polygon described by array of vertices
+RLAPI bool CheckCollisionPointPoly(Vector2 point, Vector2 *points, int pointCount);                      // Check if point is within a polygon described by array of vertices
 RLAPI bool CheckCollisionLines(Vector2 startPos1, Vector2 endPos1, Vector2 startPos2, Vector2 endPos2, Vector2 *collisionPoint); // Check the collision between two lines defined by two points each, returns collision point by reference
 RLAPI bool CheckCollisionPointLine(Vector2 point, Vector2 p1, Vector2 p2, int threshold);                // Check if point belongs to line created between two points [p1] and [p2] with defined margin in pixels [threshold]
 RLAPI Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2);                                         // Get collision rectangle for two rectangles collision

src/rshapes.c

@@ -1632,18 +1632,17 @@ bool CheckCollisionPointTriangle(Vector2 point, Vector2 p1, Vector2 p2, Vector2
 }
 
 // Check if point is within a polygon described by array of vertices
-bool CheckCollisionPointPolygon(Vector2 point, Vector2* vertices, int verticesCount)
+// NOTE: Based on http://jeffreythompson.org/collision-detection/poly-point.php
+bool CheckCollisionPointPoly(Vector2 point, Vector2 *points, int pointCount)
 {
-    // http://jeffreythompson.org/collision-detection/poly-point.php
-    
     bool collision = false;
     
-    if (verticesCount > 2)
+    if (pointCount > 2)
     {
-        for (int i = 0; i < verticesCount; i++)
+        for (int i = 0; i < pointCount; i++)
         {
-            Vector2 vc = vertices[i];
-            Vector2 vn = vertices[i + 1];
+            Vector2 vc = points[i];
+            Vector2 vn = points[i + 1];
             
             if ((((vc.y >= point.y) && (vn.y < point.y)) || ((vc.y < point.y) && (vn.y >= point.y))) &&
                  (point.x < ((vn.x - vc.x)*(point.y - vc.y)/(vn.y - vc.y) + vc.x))) collision = !collision;