public static void CreateBranch(BranchArgs a, ref LightningData data, Random r)
{
// Find Displacement
Vector2 d = a.End - a.Start;
float dist = d.Length();
d /= dist;
Vector2 n = new Vector2(-d.Y, d.X);
// Get Range Of Lightning Displacements
float range = a.LineMaxLength - a.LineMinLength;
// Add Startpoint
data.Lines.Add(a.Start);
// Add Jags
while (dist > a.LineMaxLength)
{
float disp = (float)r.NextDouble() * range + a.LineMinLength;
a.Start += disp * d;
dist -= disp;
Vector2 nl = a.Start + ((float)r.NextDouble() * 2 - 1) * a.JagDisplacement * n;
data.Lines.Add(nl);
if (nl.X < a.MinBounds.X || nl.Y < a.MinBounds.Y || nl.X > a.MaxBounds.X || nl.Y > a.MaxBounds.Y)
{
return;
}
if (r.NextDouble() > 0.95)
{
Vector2 bd = nl - data.Lines[data.Lines.Count - 2];
bd.Normalize();
Vector2 bn = new Vector2(-bd.Y, bd.X);
// Make Left Branch
float dispb = ((float)r.NextDouble() * 2 - 1) * a.BranchSlope * dist;
a.End = nl + bd * dist + bn * dispb;
CreateBranch(a, ref data, r);
// Make Right Branch
dispb = ((float)r.NextDouble() * 2 - 1) * a.BranchSlope * dist;
a.End = nl + bd * dist + bn * dispb;
CreateBranch(a, ref data, r);
return;
}
else
{
data.Lines.Add(nl);
}
}
// Add Endpoint
data.Lines.Add(a.End);
}
public static void CreateBranch(BranchArgs a, ref LightningData data, Random r)
{
// Find Displacement
Vector2 d = a.End - a.Start;
float dist = d.Length();
d /= dist;
Vector2 n = new Vector2(-d.Y, d.X);
// Get Range Of Lightning Displacements
float range = a.LineMaxLength - a.LineMinLength;
// Add Startpoint
data.Lines.Add(a.Start);
// Add Jags
while(dist > a.LineMaxLength) {
float disp = (float)r.NextDouble() * range + a.LineMinLength;
a.Start += disp * d;
dist -= disp;
Vector2 nl = a.Start + ((float)r.NextDouble() * 2 - 1) * a.JagDisplacement * n;
data.Lines.Add(nl);
if(nl.X < a.MinBounds.X || nl.Y < a.MinBounds.Y || nl.X > a.MaxBounds.X || nl.Y > a.MaxBounds.Y)
return;
if(r.NextDouble() > 0.95) {
Vector2 bd = nl - data.Lines[data.Lines.Count - 2];
bd.Normalize();
Vector2 bn = new Vector2(-bd.Y, bd.X);
// Make Left Branch
float dispb = ((float)r.NextDouble() * 2 - 1) * a.BranchSlope * dist;
a.End = nl + bd * dist + bn * dispb;
CreateBranch(a, ref data, r);
// Make Right Branch
dispb = ((float)r.NextDouble() * 2 - 1) * a.BranchSlope * dist;
a.End = nl + bd * dist + bn * dispb;
CreateBranch(a, ref data, r);
return;
}
else {
data.Lines.Add(nl);
}
}
// Add Endpoint
data.Lines.Add(a.End);
}