/// <summary>
/// 每帧会发射一个粒子，其位置在画布中间(200,200)，发射方向是360度，速率为100，生命为1秒，红色、半径为5象素
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void demo2_Click(object sender, RoutedEventArgs e)
{
var dt = 0.01;
AyFramework.Start(() =>
{
ps.emit(new AyParticle(new AyVector2(200, 200), sampleDirection().Multiply(100), 1, Colors.Green, 5));
ps.simulate(dt);
AyFramework.clearCanvas();
ps.render(ctx);
});
}
private void demo1_Click(object sender, RoutedEventArgs e)
{
AyFramework.clearCanvas();
var position = new AyVector2(10, 200);
var velocity = new AyVector2(50, -50);
var acceleration = new AyVector2(0, 10);
var dt = 0.1;
AyFramework.Start(() =>
{
position = position.Add(velocity.Multiply(dt));
velocity = velocity.Add(acceleration.Multiply(dt));
ps.CreateEllipse(position.X, position.Y, 5, Colors.Green, Colors.Yellow, ctx);
});
}
void ctx_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
AyFramework.clearCanvas();
var point = e.GetPosition(ctx);
var dt = 0.015;
var ddd = Color.FromRgb(Convert.ToByte(rd.Next(0, 255)), Convert.ToByte(rd.Next(0, 255)), Convert.ToByte(rd.Next(0, 255)));
AyFramework.stop();
AyFramework.Start(() =>
{
ps.emit(new AyParticle(new AyVector2(point.X, point.Y), sampleDirection().Multiply(100), 1, ddd, 5));
ps.simulate(dt);
AyFramework.clearCanvas();
ps.render(ctx);
});
}