[rshapes] Fix multisegment Bezier splines. (#3744)

* [rshapes] Fix multisegment Bezier splines.

It seems to me that these functions are wrong, if you step the index by 1 you move to a control point instead of the next segment.

* Fix example shapes/shapes_splines_drawing for bezier splines.

* Draw circles to fill gaps between bezier segments.

1 files changed, 10 insertions, 4 deletions

diff --git a/src/rshapes.c b/src/rshapes.c
index e9a84834..2c4a57d3 100644
--- a/src/rshapes.c
+++ b/src/rshapes.c
@@ -1832,8 +1832,11 @@ void DrawSplineCatmullRom(const Vector2 *points, int pointCount, float thick, Co
 void DrawSplineBezierQuadratic(const Vector2 *points, int pointCount, float thick, Color color)
 {
     if (pointCount < 3) return;
-
-    for (int i = 0; i < pointCount - 2; i++)
+    for (int i = 2; i < pointCount - 2; i += 2)
+    {
+        DrawCircleV(points[i], thick/2.0f, color);
+    }
+    for (int i = 0; i < pointCount - 2; i += 2)
     {
         DrawSplineSegmentBezierQuadratic(points[i], points[i + 1], points[i + 2], thick, color);
     }
@@ -1843,8 +1846,11 @@ void DrawSplineBezierQuadratic(const Vector2 *points, int pointCount, float thic
 void DrawSplineBezierCubic(const Vector2 *points, int pointCount, float thick, Color color)
 {
     if (pointCount < 4) return;
-
-    for (int i = 0; i < pointCount - 3; i++)
+    for (int i = 3; i < pointCount - 3; i += 3)
+    {
+        DrawCircleV(points[i], thick/2.0f, color);
+    }
+    for (int i = 0; i < pointCount - 3; i += 3)
     {
         DrawSplineSegmentBezierCubic(points[i], points[i + 1], points[i + 2], points[i + 3], thick, color);
     }