UnityEditor.AudioMixerDrawUtils.Vertex C# (CSharp) Method

        public static void Vertex(float x, float y)
        {
            GL.Vertex3(x + vertexOffset, y + vertexOffset, 0f);
        }

 public static void DrawFilledCurve(Rect r, AudioCurveAndColorEvaluator eval)
 {
     if (Event.current.type == EventType.Repaint)
     {
         Color color;
         HandleUtility.ApplyWireMaterial();
         GL.Begin(1);
         float pixelsPerPoint = EditorGUIUtility.pixelsPerPoint;
         float num2           = 1f / pixelsPerPoint;
         float num3           = 0.5f * num2;
         float num4           = Mathf.Ceil(r.width) * pixelsPerPoint;
         float num5           = Mathf.Floor(r.x) + pixelEpsilon;
         float num6           = 1f / (num4 - 1f);
         float max            = r.height * 0.5f;
         float num8           = r.y + (0.5f * r.height);
         float y = r.y + r.height;
         float b = Mathf.Clamp(max * eval(0f, out color), -max, max);
         for (int i = 0; i < num4; i++)
         {
             float x     = num5 + (i * num2);
             float a     = Mathf.Clamp(max * eval(i * num6, out color), -max, max);
             float num14 = Mathf.Min(a, b) - num3;
             float num15 = Mathf.Max(a, b) + num3;
             GL.Color(new Color(color.r, color.g, color.b, 0f));
             AudioMixerDrawUtils.Vertex(x, num8 - num15);
             GL.Color(color);
             AudioMixerDrawUtils.Vertex(x, num8 - num14);
             AudioMixerDrawUtils.Vertex(x, num8 - num14);
             AudioMixerDrawUtils.Vertex(x, y);
             b = a;
         }
         GL.End();
     }
 }