public void Draw()
{
if (this.RenderDescription == null)
{
this.RenderDescription = new Nodes.RenderDescription();
}
if (particleSystem == null)
{
return;
}
for (int i = 0; i < particleSystem.numberOfParticles(); i++)
{
Particle p = particleSystem.getParticle(i);
XYZ pos = p.getPosition();
if (i < this.RenderDescription.points.Count())
{
this.RenderDescription.points[i] = new Point3D(pos.X, pos.Y, pos.Z);
}
else
{
Point3D pt = new System.Windows.Media.Media3D.Point3D(pos.X, pos.Y, pos.Z);
this.RenderDescription.points.Add(pt);
}
}
for (int i = 0; i < particleSystem.numberOfSprings(); i++)
{
ParticleSpring ps = particleSystem.getSpring(i);
XYZ pos1 = ps.getOneEnd().getPosition();
XYZ pos2 = ps.getTheOtherEnd().getPosition();
if (i * 2 + 1 < this.RenderDescription.lines.Count())
{
this.RenderDescription.lines[i * 2] = new Point3D(pos1.X, pos1.Y, pos1.Z);
this.RenderDescription.lines[i * 2 + 1] = new Point3D(pos2.X, pos2.Y, pos2.Z);
}
else
{
Point3D pt1 = new System.Windows.Media.Media3D.Point3D(pos1.X, pos1.Y, pos1.Z);
Point3D pt2 = new System.Windows.Media.Media3D.Point3D(pos2.X, pos2.Y, pos2.Z);
this.RenderDescription.lines.Add(pt1);
this.RenderDescription.lines.Add(pt2);
}
}
}
public void Draw()
{
if (RenderDescription == null)
{
RenderDescription = new RenderDescription();
}
if (ParticleSystem == null)
{
return;
}
for (int i = 0; i < ParticleSystem.numberOfParticles(); i++)
{
Particle p = ParticleSystem.getParticle(i);
XYZ pos = p.getPosition();
if (i < RenderDescription.points.Count())
{
RenderDescription.points[i] = new Point3D(pos.X, pos.Y, pos.Z);
}
else
{
var pt = new Point3D(pos.X, pos.Y, pos.Z);
RenderDescription.points.Add(pt);
}
}
for (int i = 0; i < ParticleSystem.numberOfSprings(); i++)
{
ParticleSpring ps = ParticleSystem.getSpring(i);
XYZ pos1 = ps.getOneEnd().getPosition();
XYZ pos2 = ps.getTheOtherEnd().getPosition();
if (i * 2 + 1 < RenderDescription.lines.Count())
{
RenderDescription.lines[i * 2] = new Point3D(pos1.X, pos1.Y, pos1.Z);
RenderDescription.lines[i * 2 + 1] = new Point3D(pos2.X, pos2.Y, pos2.Z);
}
else
{
var pt1 = new Point3D(pos1.X, pos1.Y, pos1.Z);
var pt2 = new Point3D(pos2.X, pos2.Y, pos2.Z);
RenderDescription.lines.Add(pt1);
RenderDescription.lines.Add(pt2);
}
}
}
public override Value Evaluate(FSharpList <Value> args)
{
var particleSystem = (ParticleSystem)((Value.Container)args[0]).Item;
var result = FSharpList <Value> .Empty;
//create a geometry curve from each spring
for (int i = 0; i < particleSystem.numberOfSprings(); i++)
{
ParticleSpring s = particleSystem.getSpring(i);
Particle springEnd1 = s.getOneEnd();
Particle springEnd2 = s.getTheOtherEnd();
XYZ springXYZ1 = springEnd1.getPosition();
XYZ springXYZ2 = springEnd2.getPosition();
Line springLine = dynRevitSettings.Doc.Application.Application.Create.NewLineBound(springXYZ1, springXYZ2);
result = FSharpList <Value> .Cons(Value.NewContainer(springLine), result);
}
return(Value.NewList(result));
}
public void step(double t)
{
s.clearForces();
s.applyForces();
double halftt = 0.5 * t * t;
double tt = t * t;
for (int i = 0; i < s.numberOfParticles(); i++)
{
Particle p = s.getParticle(i);
if (p.isFree())
{
XYZ a = p.getForce() / p.getMass();
XYZ xmm = p.getOldPosition();
XYZ xm = p.getPosition();
XYZ x = xm.Add(xm - xmm) + a * tt;
XYZ vm = p.getVelocity();
p.setPosition(x);
p.setVelocity((x - xmm) / (2 * t));
}
}
}
public double getLength()
{
return((m_particleB.getPosition() - m_particleA.getPosition()).GetLength());
}