void UpdateAcceleration() // Calculates the current acceleration of the leaf
{
PhysicsVector gPerp = new PhysicsVector((Math.PI / 2) + angle.val, gravity.magnitude * Math.Cos(angle.val));
PhysicsVector tension = new PhysicsVector(gPerp.direction + Math.PI, gPerp.magnitude + (Math.Pow(vel.magnitude, 2) / radius)); // Tension counters the perpendicular vector of gravity
acc = tension + gravity;
}
void RadiusCheck() // Checks to see if the leaf is at the correct radius for the arc.
{
double checkRadius = CartesianVector.Distance(pos, anchor);
double tol = .1;
while (checkRadius > radius + tol)
{
PhysicsVector move = new PhysicsVector(angle + Math.PI / 2, -0.1);
pos += move.ConvertToCartesian();
checkRadius = CartesianVector.Distance(pos, anchor);
}
while (checkRadius < radius - tol)
{
PhysicsVector move = new PhysicsVector(angle + Math.PI / 2, 0.1);
pos += move.ConvertToCartesian();
checkRadius = CartesianVector.Distance(pos, anchor);
}
}
public void DrawVector(PhysicsVector vec, Color color, Leaf leaf)
{
//spriteBatch.Draw(vectorTexture, new Rectangle(leaf.pos.x, leaf.pos.y, (int)(vec.magnitude * 20), vectorTexture.Height/2), null, color, (float)vec.direction.val, new Vector2(0, 0), SpriteEffects.None, 0);
}