private void startGrain_Click(object sender, RoutedEventArgs e)
{
int te;
if (int.TryParse(grainsNumber.Text, out te))
{
updateTimer.Stop();
grains.Clear();
for (int i = 0; i < te; i++)
{
GrainBase gb = new GrainBase();
gb.ColorBrushIndex = rand.Next(0, 8);
gb.Radius = rand.Next(minRadius, maxRadius);
gb.EffectRadius = rand.Next(160, 300);
gb.x = rand.NextDouble() * Cav.ActualWidth;
gb.y = rand.NextDouble() * Cav.ActualHeight;
gb.xa = rand.NextDouble() * sudu - 1;
gb.ya = rand.NextDouble() * sudu - 1;
gb.max = maxJia;
grains.Add(gb);
}
updateTimer.Start();
}
else
{
MessageBox.Show("例子数量必须是整数");
}
}
private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
Loaded -= MainWindow_Loaded;
if (!isShowTile)
{
bgTile.Visibility = Visibility.Collapsed;
}
for (int i = 0; i < maxBrainsNum; i++)
{
GrainBase gb = new GrainBase();
gb.ColorBrushIndex = rand.Next(0, 8);
gb.Radius = rand.Next(minRadius, maxRadius);
gb.EffectRadius = rand.Next(160, 300);
gb.x = rand.NextDouble() * Cav.ActualWidth;
gb.y = rand.NextDouble() * Cav.ActualHeight;
gb.xa = rand.NextDouble() * sudu - 1;
gb.ya = rand.NextDouble() * sudu - 1;
gb.max = maxJia;
grains.Add(gb);
}
}
public void AyKeyFrame()
{
Cav.Children.Clear();
for (int i = 0; i < grains.Count; i++)
{
GrainBase dot = grains[i];
if (dot.x == null || dot.y == null)
{
continue;
}
#region 创建碰撞粒子
// 粒子位移
dot.x += dot.xa;
dot.y += dot.ya;
// 遇到边界将加速度反向
dot.xa *= (dot.x.Value > Cav.ActualWidth || dot.x.Value < 0) ? -1 : 1;
dot.ya *= (dot.y.Value > Cav.ActualHeight || dot.y.Value < 0) ? -1 : 1;
// 绘制点
Ellipse elip = new Ellipse();
//elip.Fill = new SolidColorBrush(OtherTenColor[dot.ColorBrushIndex]);
elip.Stroke = new SolidColorBrush(Colors.Transparent);
elip.StrokeThickness = 0;
elip.Width = elip.Height = dot.Radius;
if (isEffect)
{
RadialGradientBrush rgb = new RadialGradientBrush();
GradientStop gs1 = new GradientStop();
var color1 = SolidColorBrushConverter.ToColor("#00" + OtherTenColor[dot.ColorBrushIndex]);
gs1.Offset = 1;
gs1.Color = color1;
rgb.GradientStops.Add(gs1);
GradientStop gs2 = new GradientStop();
var color2 = SolidColorBrushConverter.ToColor("#33" + OtherTenColor[dot.ColorBrushIndex]);
gs2.Offset = 0.7;
gs2.Color = color2;
rgb.GradientStops.Add(gs2);
GradientStop gs3 = new GradientStop();
var color3 = SolidColorBrushConverter.ToColor("#CC" + OtherTenColor[dot.ColorBrushIndex]);//99
gs3.Color = color3;
rgb.GradientStops.Add(gs3);
GradientStop gs4 = new GradientStop();
var color4 = SolidColorBrushConverter.ToColor("#99" + OtherTenColor[dot.ColorBrushIndex]);
gs4.Offset = 0.225;
gs4.Color = color4;
rgb.GradientStops.Add(gs4);
elip.Fill = rgb;
}
Canvas.SetLeft(elip, dot.x.Value - 0.5);
Canvas.SetTop(elip, dot.y.Value - 0.5);
Cav.Children.Add(elip);
#endregion
}
}
