How do you have a sprite follow a curved line? [closed]

Question

public void Update(GameTime gameTime)
    {
        if (bActive && bMovingTowardsTarget)
        {
            if (!(v2Target == null))
            {
                // Get a vector pointing from the current location of the sprite
                // to the destination.
                Vector2 Delta = new Vector2(v2Target.X - asSprite.X, v2Target.Y - asSprite.Y);

                if (Delta.Length() > Speed)
                {
                    Delta.Normalize();
                    Delta *= Speed;
                    Position += Delta;
                }
                else
                {
                    if (v2Target == asSprite.Position)
                    {
                        if (bPathing)
                        {
                            if (queuePath.Count > 0)
                            {
                                v2Target = queuePath.Dequeue();
                                if (bLoopPath)
                                {
                                    queuePath.Enqueue(v2Target);
                                }
                            }
                            else
                            {
                                if (!(sEndPathAnimation == null))
                                {
                                    if (!(Sprite.CurrentAnimation == sEndPathAnimation))
                                    {
                                        Sprite.CurrentAnimation = sEndPathAnimation;
                                    }
                                }

                                if (bDeactivateAtEndOfPath)
                                {
                                    IsActive = false;
                                }

                                if (bHideAtEndOfPath)
                                {
                                    IsVisible = false;
                                }
                            }
                        }
                    }
                    else
                    {
                        asSprite.Position = v2Target;
                    }
                }
            }
        }
        if (bActive)
            asSprite.Update(gameTime);
    }

This is my update and

for (int i = 0; i < 50; i++)
        {
            float angle = (float)(i / 100.0 * Math.PI * 2);

            vertices[i].Position = new Vector3(200 + (float)Math.Cos(angle) * 100, 200 + (float)Math.Sin(angle) * 100, 0);
            Console.WriteLine(" vertices is :" +" ( +"+ vertices[i].Position.X + " , " + vertices[i].Position.Y + " )");
            vertices[i].Color = Color.Black;
        }
        vertices[49] = vertices[0];


for (int i = 0; i < 100; i++)

        {

   //  myTank.AddPathNode(new Vector2(vertices[i].Position.X, vertices[i].Position.Y));


        }

I don't know why but the sprite doesn't move smoothly here and doesn't follow on half circle here. I need you guys help here!

Answer 1

http://www.enchantedage.com/node/78 This should be along the same idea you are attempting in XNA.

If you are looking to follow a Bezier or control points I know Cocos2d has the CCBezierBy class. You can certainly lift the code and concepts from there too.

Here's an discussion that may help, http://stackoverflow.com/questions/9990443/rotating-a-sprite-on-a-bezier-curve-in-cocos2d