/// <summary>
/// Initializes all the variables needed for Part One of the assignment
/// </summary>
private void PartOneInitialize()
{
moveOn = true;
dragOn = false;
gravityOn = false;
kinecticOn = false;
cubeSize = 10.0f;
ballRadius = 1.0f;
cubePosition = new Vector3(0.0f, 0.0f, 0.0f);
ballPosition = new Vector3((float)randomNums.NextDouble(), (float)randomNums.NextDouble(), (float)randomNums.NextDouble());
initialVelocity = new Vector3((float)randomNums.NextDouble(), (float)randomNums.NextDouble(), (float)randomNums.NextDouble());
cube = new Shape(cubeModel, cubePosition, new Vector3(0.0f, 0.0f, 0.0f), 0.05f, cubeSize, Color.Firebrick.ToVector3());
ball = new Shape(ballModel, ballPosition, initialVelocity, 1.0f, ballRadius, Color.Azure.ToVector3());
// camera settings
cameraPosition = new Vector3(22.0f, 15.5f, -20.5f); //cameraPosition = {X:21.91004 Y:15.44271 Z:-20.90045}
lookAt = new Vector3(9.0f, 6.5f, -12.0f); // lookAt = {X:9.221636 Y:6.635674 Z:-11.73702}
view = Matrix.CreateLookAt(cameraPosition, lookAt, new Vector3(0.0f, 1.0f, 0.0f));
projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(90), 800f / 600f, 0.1f, 100f);
}
private void InitializeInterpolation()
{
curve = new CurvePlotting(numberOfPoints);
followThisBall = new Shape(ballModel, curve.GetPosition(0), Vector3.Zero, 1.0f, 0.75f, Color.Red.ToVector3());
interpolationPoints = new Shape[numberOfPoints];
for (int i = 0; i < numberOfPoints; i++)
{
interpolationPoints[i] = new Shape(ballModel, curve.midPoints[i], Vector3.Zero, 1.0f, 0.75f, Color.Green.ToVector3());
}
}
private void InitializePieceWise()
{
piecewisePoints = new Shape[numberOfPoints];
for (int i = 0; i < numberOfPoints; i++)
{
Vector3 xyz = new Vector3((float)randomNums.Next(40), (float)randomNums.Next(40), (float)randomNums.Next(40));
piecewisePoints[i] = new Shape(ballModel, xyz, Vector3.Zero, 1.0f, 0.5f, Color.Green.ToVector3());
}
followThisBall = new Shape(ballModel, piecewisePoints[0].position, Vector3.Zero, 1.0f, 0.75f, Color.Red.ToVector3());
nextPoint = 1;
}
/// <summary>
/// Calculations for collision with respect to loss of kinectic energy if on
/// </summary>
/// <param name="aCube"></param>
/// <param name="aBall"></param>
private void Collision(Shape aCube, Shape aBall)
{
float boundary = cubeSize;
float xVel = aBall.velocity.X;
float yVel = aBall.velocity.Y;
float zVel = aBall.velocity.Z;
if (aBall.position.X + aBall.velocity.X + ballRadius > boundary || aBall.position.X + aBall.velocity.X - ballRadius < -boundary)
{
xVel = -xVel;
if (kinecticOn)
{
xVel *= 0.90f;
}
aBall.velocity = new Vector3(xVel, yVel, zVel);
}
if (aBall.position.Y + aBall.velocity.Y + ballRadius > boundary || aBall.position.Y + aBall.velocity.Y - ballRadius < -boundary)
{
timeSinceCollision = 0.0f;
yVel = -yVel;
if (kinecticOn)
{
yVel *= 0.90f;
}
aBall.velocity = new Vector3(xVel, yVel, zVel);
initialVelocity = aBall.velocity; // At a collision point, this defines a new initial velocity needed to compute the gravity velocity
}
if (aBall.position.Z + aBall.velocity.Z + ballRadius > boundary || aBall.position.Z + aBall.velocity.Z - ballRadius < -boundary)
{
zVel = -zVel;
if (kinecticOn)
{
zVel *= 0.90f;
}
aBall.velocity = new Vector3(xVel, yVel, zVel);
}
}