public void Run()
{
Vec v = new Vec(1.0,1.0);
Console.WriteLine("v={0}", v);
v = v.Scale(5.0).Add(new Vec(3.0,-2.0));
Console.WriteLine("v={0}", v);
}
void OnMouseUp(object sender, MouseEventArgs a)
{
if (a.Button == MouseButtons.Left && !mouseDownLocation.IsEmpty)
{
U.show("OnMouseUp");
var s = new Sprite(images[curimage], 0.0F);
s.Position = new Vec(mouseDownLocation);
Vec spd = new Vec(a.Location).Subtract(s.Position).Scale(0.4);
var speedlen = spd.Length;
if (speedlen > U.maxspeed)
{
spd = spd.Scale(U.maxspeed / speedlen);
}
else if (speedlen < U.minspeed)
{
// make random speed
double alpha = Math.PI * 2.0 * random.NextDouble();
speedlen = (random.NextDouble() * (U.maxspeed - U.minspeed) + U.minspeed);
spd = Vec.Dir(alpha).Scale(speedlen);
}
s.Speed = spd;
s.Rotation = (float)(random.NextDouble() - 0.5) * 10.0F;
sprites.Add(s);
mouseDownLocation = new Point();
mouseLastLocation = mouseDownLocation;
}
else if (a.Button == MouseButtons.Right)
{
curimage += 1;
if (curimage >= images.Count)
{
curimage = 0;
}
prototype = new Sprite(images[curimage], 0.0F);
}
}
void OnMouseUp(object sender, MouseEventArgs a)
{
if (a.Button == MouseButtons.Left && !mouseDownLocation.IsEmpty) {
U.show("OnMouseUp");
var s = new Sprite(images[curimage], 0.0F);
s.Position = new Vec(mouseDownLocation);
Vec spd = new Vec(a.Location).Subtract(s.Position).Scale(0.4);
var speedlen = spd.Length;
if (speedlen > U.maxspeed) {
spd = spd.Scale(U.maxspeed/speedlen);
} else if (speedlen < U.minspeed) {
// make random speed
double alpha = Math.PI * 2.0 * random.NextDouble();
speedlen = (random.NextDouble() * (U.maxspeed-U.minspeed) + U.minspeed);
spd = Vec.Dir(alpha).Scale(speedlen);
}
s.Speed = spd;
s.Rotation = (float)(random.NextDouble() - 0.5) * 10.0F;
sprites.Add(s);
mouseDownLocation = new Point();
mouseLastLocation = mouseDownLocation;
} else if (a.Button == MouseButtons.Right) {
curimage += 1;
if (curimage >= images.Count) {
curimage = 0;
}
prototype = new Sprite(images[curimage], 0.0F);
}
}
// return a tangental projection
public Vec Project(Vec v)
{
return(v.Scale(this.Scalar(v) / v.Length2));
}
// return a tangental projection
public Vec Project(Vec v)
{
return v.Scale(this.Scalar(v)/v.Length2);
}
public void SetEndTime(double t)
{
time1 = t;
pos1 = pos0.Add(speed.Scale(DeltaTime));
collision = null; // since we have limited the rib
}
private void setSpeed(Vec spd)
{
speed = spd;
pos1 = pos0.Add(speed.Scale(DeltaTime));
collision = null;
}
