public override void BeforeDraw(MousePoint p)
{
// in Initialize, it's too early to get UI values (!!??!!)
t_skipper = new Utilities.Iterativ.Skipper(6);
t_previousPoint = new MousePoint(p.X, p.Y);
CreateParticles(p.X, p.Y);
t_attractor = new Effects.Particles.Attractor(new Engine.Calc.Vector(p.X, p.Y), t_force, t_expression, t_intensity);
}
private void ThreadedProcess()
{
t_workflow.AllowInvalidate = true;
Engine.Effects.Particles.Attractor attr1 = new Particles.Attractor(new Engine.Calc.Vector(400, 600));
Engine.Effects.Particles.Attractor attr2 = new Particles.Attractor(new Engine.Calc.Vector(800, 600));
Engine.Effects.Particles.Attractor[] attrs = new Particles.Attractor[2];
attrs[0] = attr1;
attrs[1] = attr2;
Engine.Effects.Particles.ForceParticle[] fp = new Particles.ForceParticle[100];
for (int i = 0; i < fp.Length; i++)
{
double variance = Engine.Calc.Math.Rand.NextDouble() + 1;
fp[i] = new Particles.ForceParticle(600, 300, 10f + (float)variance, -50f + (float)variance);
}
// move the particles simulating animation
for (int i = 0; i < 5000; i++)
{
for (int j = 0; j < fp.Length; j++)
{
fp[j].Update(attrs);
Engine.Color.Cell c = Engine.Application.UISelectedValues.SelectedColor;
// draw a line between last position and current position
List <MousePoint> points = LinearInterpolate(fp[j].PreviousPoint, new Point((int)Math.Round(fp[j].Position.X), (int)Math.Round(fp[j].Position.Y)));
foreach (MousePoint p in points)
{
if (t_imageProcessed.IsOutOfBounds(p.X, p.Y))
{
continue;
}
Engine.Color.Cell img = t_imageProcessed.GetPixel(p.X, p.Y, Surface.PixelRetrievalOptions.ReturnEdgePixel);
t_imageProcessed.SetPixel(Engine.Calc.Color.FastAlphaBlend(c, img), p.X, p.Y, Surface.PixelSetOptions.Ignore);
}
}
}
base.PostProcess();
}