public void CreateEnvironment()
{
LastWindowPos = new PointF(Left, Top);
RenderThread = new Thread(new ThreadStart(Render));
SimulationThread = new Thread(new ThreadStart(Simulate));
Paused = false;
FrameAdvance = false;
FrameCounter = new FramerateMeter();
Size CSize = Canvas.Bounds.Size;
EnvironmentBounds = new Bounds(new PointF(0, 0), new PointF(CSize.Width, CSize.Height));
Particles = new List<Particle>();
for (int i = 0; i < ParticleCount; i++)
Particles.Add(new Particle(30, RandomPointFInBounds(EnvironmentBounds), RandomInUnitCircle().Times(1000)));
}
public static PointF RandomPointFInBounds(Bounds Bound)
{
return RandomPointF().Times(Bound.Range).Plus(Bound.Lower);
}
private void RemoveFromOutOfBounds(Bounds EnvironmentBounds)
{
if (PrePosition.X < EnvironmentBounds.Lower.X + Radius)
PrePosition.X = EnvironmentBounds.Lower.X + Radius + 1;
if (PrePosition.X > EnvironmentBounds.Upper.X - Radius)
PrePosition.X = EnvironmentBounds.Upper.X - Radius - 1;
if (PrePosition.Y < EnvironmentBounds.Lower.Y + Radius)
PrePosition.Y = EnvironmentBounds.Lower.Y + Radius + 1;
if (PrePosition.Y > EnvironmentBounds.Upper.Y - Radius)
PrePosition.Y = EnvironmentBounds.Upper.Y - Radius - 1;
}
public void SimulateNextFrame(float DeltaTime, Bounds EnvironmentBounds, List<Particle> Particles)
{
PreVelocity = Velocity;
PrePosition = SimulateLinearAcceleration(DeltaTime);
TestForWallCollision(DeltaTime, EnvironmentBounds);
TestForParticleCollision(DeltaTime, Particles);
SimulateGravity(DeltaTime);
PrePosition = SimulateLinearAcceleration(DeltaTime);
RemoveFromOtherParticles(Particles);
RemoveFromOutOfBounds(EnvironmentBounds);
}
private void TestForWallCollision(float DeltaTime, Bounds EnvironmentBounds)
{
if (PrePosition.X < EnvironmentBounds.Lower.X + Radius
|| PrePosition.X > EnvironmentBounds.Upper.X - Radius)
{
PreVelocity.X = -PreVelocity.X;
}
if (PrePosition.Y < EnvironmentBounds.Lower.Y + Radius
|| PrePosition.Y > EnvironmentBounds.Upper.Y - Radius)
{
PreVelocity.Y = -PreVelocity.Y;
}
}
