public unsafe void DrawBeamApp(PolylineRender poly, LineBuffer points, float globalTime, NodeReference reference, ParticleEffectInstance instance, ResourceManager res, Billboards billboards, ref Matrix4 transform, float sparam)
{
//TODO: Cross-plane not showing
//TODO: In some cases particles are going backwards? (Broken emitter or LineBuffer)
//TODO: See if z sorting can be better for Polyline
//TODO: Implement FLBeamAppearance properties
if (points.Count() < 2)
{
return;
}
//Get only active indices, alloc on stack for 0 GC pressure
//int* indices = stackalloc int[512];
var indices = new int[512];
var particles = new Particle[512];
for (int i = 0; i < 512; i++)
{
indices[i] = -1;
}
int ptCount = 0;
for (int i = 0; i < points.Count(); i++)
{
if (points[i].Active)
{
indices[ptCount++] = points[i].ParticleIndex;
}
}
if (ptCount < 2)
{
return;
}
for (int i = 0; i < ptCount; i++)
{
particles[i] = instance.Particles[indices[i]];
}
for (int i = 1; i < ptCount; i++)
{
if (particles[i - 1].TimeAlive > particles[i].TimeAlive)
{
Console.WriteLine("bad order");
}
}
var node_tr = GetAttachment(reference, transform);
Texture2D tex;
Vector2 tl, tr, bl, br;
HandleTexture(res, globalTime, sparam, ref instance.Particles[indices[0]], out tex, out tl, out tr, out bl, out br);
//Sorting hack kinda
var z = RenderHelpers.GetZ(billboards.Camera.Position, node_tr.Transform(Vector3.Zero));
for (int j = 0; j < 2; j++) //two planes
{
poly.StartLine(tex, BlendInfo);
bool odd = true;
Vector3 dir = Vector3.Zero;
for (int i = 0; i < ptCount; i++)
{
var pos = node_tr.Transform(instance.Particles[indices[i]].Position);
if (i + 1 < ptCount)
{
var pos2 = node_tr.Transform(instance.Particles[indices[i + 1]].Position);
var forward = (pos2 - pos).Normalized();
var toCamera = (billboards.Camera.Position - pos).Normalized();
var up = Vector3.Cross(toCamera, forward);
up.Normalize();
dir = up;
if (j == 1)
{
//Broken? Doesn't show up
var right = Vector3.Cross(up, forward).Normalized();
dir = right;
}
}
var time = instance.Particles[indices[i]].TimeAlive / instance.Particles[indices[i]].LifeSpan;
var w = Width.GetValue(sparam, time);
poly.AddPoint(
pos + (dir * w / 2),
pos - (dir * w / 2),
odd ? tl : bl,
odd ? tr : br,
new Color4(
Color.GetValue(sparam, time),
Alpha.GetValue(sparam, time)
)
);
odd = !odd;
}
poly.FinishLine(z);
}
}