public override void OnParticleSpawned(int idx, NodeReference reference, ParticleEffectInstance instance)
{
instance.BeamAppearances[reference].Push(new LinePointer()
{
ParticleIndex = idx, Active = true
});
}
protected override void SetParticle(int idx, ParticleEffect fx, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
float w = Width.GetValue(sparam, 0) / 2;
float h = Height.GetValue(sparam, 0) / 2;
float d = Depth.GetValue(sparam, 0) / 2;
float s_min = MathHelper.DegreesToRadians(MinSpread.GetValue(sparam, 0));
float s_max = MathHelper.DegreesToRadians(MaxSpread.GetValue(sparam, 0));
var pos = new Vector3(
instance.Random.NextFloat(-w, w),
instance.Random.NextFloat(-h, h),
instance.Random.NextFloat(-d, d)
);
//var angle = instance.Random.NextFloat(s_min, s_max);
/*var n = new Vector3(
* (float)(Math.Cos(angle)),
* 1,
* (float)(Math.Sin(angle))
* );*/
var n = RandomInCone(instance.Random, s_min, s_max);
var tr = Transform.GetMatrix(sparam, 0);
n = (tr * new Vector4(n.Normalized(), 0)).Xyz.Normalized();
var pr = pos;
instance.Particles[idx].Position = pr;
instance.Particles [idx].Normal = n * Pressure.GetValue(sparam, 0);
}
public override void OnParticleSpawned(int idx, ParticleEffectInstance instance)
{
instance.BeamAppearances[this].Enqueue(new LinePointer()
{
ParticleIndex = idx, Active = true
});
}
public void Update(ParticleEffectInstance instance, TimeSpan delta, ref Matrix4 transform, float sparam)
{
for (int i = 0; i < emitters.Count; i++)
{
emitters[i].Update(this, instance, delta, ref transform, sparam);
}
}
protected override void SetParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4 transform, float sparam, float globaltime)
{
var r_min = MinRadius.GetValue(sparam, 0);
var r_max = MaxRadius.GetValue(sparam, 0);
var radius = instance.Random.NextFloat(r_min, r_max);
var p = new Vector3(
instance.Random.NextFloat(-1, 1),
instance.Random.NextFloat(-1, 1),
instance.Random.NextFloat(-1, 1)
);
p.Normalize();
var direction = p;
var tr = Transform.GetMatrix(sparam, globaltime);
var n = (tr * new Vector4(direction, 0)).Xyz.Normalized();
n *= Pressure.GetValue(sparam, 0);
var pr = p * radius;
instance.Particles[idx].Position = pr;
instance.Particles[idx].Normal = n;
}
protected override void SetParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4 transform, float sparam, float globaltime)
{
float w = Width.GetValue(sparam, 0) / 2;
float h = Height.GetValue(sparam, 0) / 2;
float d = Depth.GetValue(sparam, 0) / 2;
float s_min = MathHelper.DegreesToRadians(MinSpread.GetValue(sparam, 0));
float s_max = MathHelper.DegreesToRadians(MaxSpread.GetValue(sparam, 0));
var pos = new Vector3(
FxRandom.NextFloat(-w, w),
FxRandom.NextFloat(-h, h),
FxRandom.NextFloat(-d, d)
);
var n = RandomInCone(s_min, s_max);
//var tr = Transform.GetMatrix(sparam, globaltime);
//var tr = Matrix4.Identity;
//n = (tr * new Vector4(n.Normalized(), 0)).Xyz.Normalized();
Vector3 translate;
Quaternion rotate;
if (DoTransform(reference, sparam, globaltime, out translate, out rotate))
{
pos += translate;
n = rotate * n;
}
var pr = pos;
instance.Pool.Particles[idx].Position = pr;
instance.Pool.Particles [idx].Normal = n * Pressure.GetValue(sparam, 0);
}
protected override void SetParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4x4 transform, float sparam, float globaltime)
{
var r_min = MinRadius.GetValue(sparam, 0);
var r_max = MaxRadius.GetValue(sparam, 0);
var radius = FxRandom.NextFloat(r_min, r_max);
var p = new Vector3(
FxRandom.NextFloat(-1, 1),
FxRandom.NextFloat(-1, 1),
FxRandom.NextFloat(-1, 1)
);
p.Normalize();
var n = p;
Vector3 translate;
Quaternion rotate;
if (DoTransform(reference, sparam, globaltime, out translate, out rotate))
{
p += translate;
n = Vector3.Transform(n, rotate);
}
n *= Pressure.GetValue(sparam, 0);
var pr = p * radius;
instance.Pool.Particles[idx].Position = pr;
instance.Pool.Particles[idx].Normal = n;
}
public override void Update(NodeReference reference, ParticleEffectInstance instance, TimeSpan delta, ref Matrix4 transform, float sparam)
{
if (reference.Paired.Count == 0)
{
return;
}
if (NodeLifeSpan < instance.GlobalTime)
{
return;
}
if (reference.Paired[0].Node.NodeLifeSpan < instance.GlobalTime)
{
return;
}
var maxCount = 1000;
//var maxCount = MaxParticles == null ? int.MaxValue : (int)Math.Ceiling(MaxParticles.GetValue(sparam, 0f));
var freq = Frequency == null ? 0f : Frequency.GetValue(sparam, 0f);
var spawnMs = freq <= 0 ? 0 : 1 / (double)freq;
var state = instance.GetEmitterState(reference);
if (state.ParticleCount >= maxCount)
{
return;
}
int j = 0;
if (spawnMs > 0)
{
//Spawn lots of particles
var dt = Math.Min(delta.TotalSeconds, 1); //don't go crazy during debug pauses
while (true)
{
if (state.SpawnTimer < dt)
{
dt -= state.SpawnTimer;
state.SpawnTimer = spawnMs;
}
else
{
state.SpawnTimer -= dt;
break;
}
if (state.ParticleCount + 1 <= maxCount)
{
var idx = instance.GetNextFreeParticle();
if (idx == -1)
{
return;
}
j++;
state.ParticleCount++;
SpawnParticle(idx, reference, instance, ref transform, sparam, (float)instance.GlobalTime);
var app = (FxAppearance)reference.Paired[0].Node;
app.OnParticleSpawned(idx, instance.Pool.Particles[idx].Appearance, instance);
}
}
}
}
protected void SpawnParticle(int idx, ParticleEffect fx, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
instance.Particles[idx].Active = true;
instance.Particles[idx].Emitter = this;
instance.Particles[idx].Appearance = (FxAppearance)fx.Pairs[this][0];
instance.Particles[idx].TimeAlive = 0f;
instance.Particles[idx].LifeSpan = InitLifeSpan.GetValue(sparam, 0f);
SetParticle(idx, fx, instance, ref transform, sparam);
}
protected void SpawnParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
instance.Particles[idx].Active = true;
instance.Particles[idx].Emitter = reference;
instance.Particles[idx].Appearance = reference.Paired[0];
instance.Particles[idx].TimeAlive = 0f;
instance.Particles[idx].LifeSpan = InitLifeSpan.GetValue(sparam, 0f);
SetParticle(idx, reference, instance, ref transform, sparam);
}
public void SpawnInitialParticles(NodeReference reference, ParticleEffectInstance instance, ref Matrix4x4 transform, float sparam)
{
int j = 0;
for (int i = 0; i < InitialParticles; i--)
{
var idx = instance.GetNextFreeParticle();
if (idx == -1)
{
break;
}
SpawnParticle(idx, reference, instance, ref transform, sparam, 0);
j++;
}
}
public void KillAll(ParticleEffectInstance instance)
{
for (int i = 0; i < Particles.Length; i++)
{
if (!Particles[i].Active)
{
continue;
}
if (Particles[i].Instance == instance)
{
Particles[i].Active = false;
Particles[i].Instance = null;
FreeParticles.Enqueue(i);
}
}
}
public void SpawnInitialParticles(ParticleEffect fx, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
int j = 0;
for (int i = 0; i < InitialParticles; i--)
{
var idx = instance.GetNextFreeParticle();
if (idx == -1)
{
break;
}
SpawnParticle(idx, fx, instance, ref transform, sparam);
j++;
}
instance.GetEmitterState(this).ParticleCount = j;
}
public void KillAll(ParticleEffectInstance instance)
{
for (int i = 0; i < Particles.Length; i++)
{
if (!Particles[i].Active)
{
continue;
}
if (Particles[i].Instance == instance)
{
Particles[i].Active = false;
Particles[i].Instance.ParticleCounts[Particles[i].Emitter.EmitterIndex]--;
Particles[i].Instance = null;
FreeParticles.Push(i);
}
}
}
public override void Update(ParticleEffect fx, ParticleEffectInstance instance, TimeSpan delta, ref Matrix4 transform, float sparam)
{
if (!fx.Pairs.ContainsKey(this))
{
return;
}
var maxCount = MaxParticles == null ? int.MaxValue : (int)Math.Ceiling(MaxParticles.GetValue(sparam, 0f));
var freq = Frequency == null ? 0f : Frequency.GetValue(sparam, 0f);
var spawnMs = freq <= 0 ? 0 : 1 / (double)freq;
var state = instance.GetEmitterState(this);
if (state.ParticleCount >= maxCount)
{
return;
}
if (spawnMs > 0)
{
//Spawn lots of particles
var dt = Math.Min(delta.TotalSeconds, 1); //don't go crazy during debug pauses
while (true)
{
if (state.SpawnTimer < dt)
{
dt -= state.SpawnTimer;
state.SpawnTimer = spawnMs;
}
else
{
state.SpawnTimer -= dt;
break;
}
if (state.ParticleCount + 1 <= maxCount)
{
var idx = instance.GetNextFreeParticle();
if (idx == -1)
{
return;
}
state.ParticleCount++;
SpawnParticle(idx, fx, instance, ref transform, sparam);
instance.Particles[idx].Appearance.OnParticleSpawned(idx, instance);
}
}
}
}
protected override void SetParticle(int idx, ParticleEffect fx, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
var r_min = MinRadius.GetValue(sparam, 0);
var r_max = MaxRadius.GetValue(sparam, 0);
var radius = instance.Random.NextFloat(r_min, r_max);
float s_min = MathHelper.DegreesToRadians(MinSpread.GetValue(sparam, 0));
float s_max = MathHelper.DegreesToRadians(MaxSpread.GetValue(sparam, 0));
var direction = RandomInCone(instance.Random, s_min, s_max);
var tr = Transform.GetMatrix(sparam, 0);
var n = (tr * new Vector4(direction.Normalized(), 0)).Xyz.Normalized();
var p = n * radius;
n *= Pressure.GetValue(sparam, 0);
instance.Particles[idx].Position = p;
instance.Particles[idx].Normal = n;
}
protected void SpawnParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4 transform, float sparam, float globaltime)
{
instance.Particles[idx].Active = true;
instance.Particles[idx].Emitter = reference;
instance.Particles[idx].Appearance = reference.Paired[0];
instance.Particles[idx].TimeAlive = 0f;
instance.Particles[idx].LifeSpan = InitLifeSpan.GetValue(sparam, 0f);
instance.Particles[idx].Orientation = Quaternion.Identity;
SetParticle(idx, reference, instance, ref transform, sparam, globaltime);
if (reference.Paired[0].Parent == null)
{
instance.Particles[idx].Position = VectorMath.Transform(
instance.Particles[idx].Position, transform);
var len = instance.Particles[idx].Normal.Length;
var nr = instance.Particles[idx].Normal.Normalized();
var transformed = (transform * new Vector4(nr, 0)).Xyz.Normalized();
instance.Particles[idx].Normal = transformed * len;
}
}
protected override void SetParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4 transform, float sparam, float globaltime)
{
var r_min = MinRadius.GetValue(sparam, 0);
var r_max = MaxRadius.GetValue(sparam, 0);
var radius = instance.Random.NextFloat(r_min, r_max);
float s_min = MathHelper.DegreesToRadians(MinSpread.GetValue(sparam, 0));
float s_max = MathHelper.DegreesToRadians(MaxSpread.GetValue(sparam, 0));
var n = RandomInCone(instance.Random, s_min, s_max);
Vector3 translate;
Quaternion rotate;
if (DoTransform(reference, sparam, globaltime, out translate, out rotate))
{
n = rotate * n;
}
var p = n * radius + translate;
n *= Pressure.GetValue(sparam, 0);
instance.Particles[idx].Position = p;
instance.Particles[idx].Normal = n;
}
public override void Draw(ref Particle particle, int pidx, float lasttime, float globaltime, NodeReference reference, ResourceManager res, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
var time = particle.TimeAlive / particle.LifeSpan;
var node_tr = GetAttachment(reference, transform);
Texture2D tex;
Vector2 tl, tr, bl, br;
HandleTexture(res, globaltime, sparam, ref particle, out tex, out tl, out tr, out bl, out br);
var c = Color.GetValue(sparam, time);
var a = Alpha.GetValue(sparam, time);
var q = particle.Orientation * Transform.GetDeltaRotation(sparam, lasttime, globaltime);
particle.Orientation = q;
var mat = Matrix4.CreateFromQuaternion(q);
//TODO: why doesn't this work?
//var n = (transform * new Vector4(particle.Normal.Normalized(), 0)).Xyz.Normalized();
var p = VectorMath.Transform(particle.Position, transform);
var p2 = VectorMath.Transform(particle.Position + particle.Normal, transform);
var n = (p - p2).Normalized();
instance.Pool.DrawPerspective(
particle.Instance,
this,
tex,
VectorMath.Transform(particle.Position, transform),
mat,
new Vector2(Size.GetValue(sparam, time)),
new Color4(c, a),
tl,
tr,
bl,
br,
n,
Rotate == null ? 0f : MathHelper.DegreesToRadians(Rotate.GetValue(sparam, time))
);
if (DrawNormals)
{
Debug.DrawLine(p - (n * 100), p + (n * 100));
}
}
public virtual void OnParticleSpawned(int idx, NodeReference reference, ParticleEffectInstance instance)
{
}
public virtual void Draw(ref Particle particle, int pidx, float lasttime, float globaltime, NodeReference reference, ResourceManager res, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
}
public void DrawBeamApp(PolylineRender poly, float globalTime, NodeReference reference, ParticleEffectInstance instance, ref Matrix4x4 transform, float sparam)
{
//get particles!
var beam = instance.Beams[reference.BeamIndex];
if (beam.ParticleCount < 2) { beam.ParticleCount = 0; return; }
AgeComparer.Instance.Particles = instance.Pool.Particles;
Array.Sort(beam.ParticleIndices, 0, beam.ParticleCount, AgeComparer.Instance);
//draw
var node_tr = GetAttachment(reference, transform);
Texture2D tex;
Vector2 tl, tr, bl, br;
var res = instance.Resources;
TextureHandler.Update(Texture, res);
var frame = GetFrame(globalTime, sparam, ref instance.Pool.Particles[beam.ParticleIndices[0]]);
int index = (int) Math.Floor((TextureHandler.FrameCount - 1) * frame) * 4;
tl = TextureHandler.Coordinates[index];
tr = TextureHandler.Coordinates[index + 1];
bl = TextureHandler.Coordinates[index + 2];
br = TextureHandler.Coordinates[index + 3];
//Sorting hack kinda
var z = RenderHelpers.GetZ(instance.Pool.Camera.Position, Vector3.Transform(Vector3.Zero, node_tr));
for (int j = 0; j < 2; j++) //two planes
{
poly.StartLine(TextureHandler.Texture ?? res.WhiteTexture, BlendInfo);
bool odd = true;
Vector3 dir = Vector3.Zero;
for (int i = 0; i < beam.ParticleCount; i++)
{
var pos = Vector3.Transform(instance.Pool.Particles[beam.ParticleIndices[i]].Position, node_tr);
if (i + 1 < beam.ParticleCount) {
var pos2 = Vector3.Transform(instance.Pool.Particles[beam.ParticleIndices[i + 1]].Position, node_tr);
var forward = (pos2 - pos).Normalized();
var toCamera = (instance.Pool.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.Pool.Particles[beam.ParticleIndices[i]].TimeAlive / instance.Pool.Particles[beam.ParticleIndices[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);
}
beam.ParticleCount = 0;
}
public override void Draw(ref Particle particle, int pidx, float lasttime, float globaltime, NodeReference reference, ResourceManager res, ParticleEffectInstance instance, ref Matrix4x4 transform, float sparam)
{
//Transform and add
Vector3 deltap;
Quaternion deltaq;
if (DoTransform(reference, sparam, lasttime, globaltime, out deltap, out deltaq))
{
particle.Position += deltap;
particle.Orientation *= deltaq;
}
var beam = instance.Beams[reference.BeamIndex];
if (beam.ParticleCount >= BeamParticles.MAX_PARTICLES) return;
beam.ParticleIndices[beam.ParticleCount++] = pidx;
}
protected virtual void SetParticle(int idx, NodeReference reference, ParticleEffectInstance instance, ref Matrix4 transform, float sparam, float globaltime)
{
}
public virtual void OnParticleSpawned(int idx, ParticleEffectInstance instance)
{
}
public virtual void Update(ParticleEffect fx, ParticleEffectInstance instance, TimeSpan delta, ref Matrix4 transform, float sparam)
{
}
public override void Update(NodeReference reference, ParticleEffectInstance instance, double delta, ref Matrix4x4 transform, float sparam)
{
if (reference.Paired.Count == 0)
{
return;
}
if (NodeLifeSpan < instance.GlobalTime)
{
return;
}
//if (reference.Paired[0].Node.NodeLifeSpan < instance.GlobalTime) return;
var maxCount = MaxParticles == null ? int.MaxValue : (int)Math.Ceiling(MaxParticles.GetValue(sparam, (float)instance.GlobalTime));
var freq = Frequency == null ? 0f : Frequency.GetValue(sparam, (float)instance.GlobalTime);
var spawnMs = freq <= 0 ? 0 : 1 / (double)freq;
int j = 0;
var count = instance.ParticleCounts[reference.EmitterIndex];
if (spawnMs > 0)
{
if (instance.SpawnTimers[reference.EmitterIndex] > spawnMs)
{
instance.SpawnTimers[reference.EmitterIndex] = spawnMs;
}
//Spawn lots of particles
var dt = Math.Min(delta, 1); //don't go crazy during debug pauses
while (true)
{
if (instance.SpawnTimers[reference.EmitterIndex] < dt)
{
dt -= instance.SpawnTimers[reference.EmitterIndex];
instance.SpawnTimers[reference.EmitterIndex] = spawnMs;
}
else
{
instance.SpawnTimers[reference.EmitterIndex] -= dt;
break;
}
if (count < maxCount)
{
var idx = instance.GetNextFreeParticle();
if (idx == -1)
{
return;
}
j++;
SpawnParticle(idx, reference, instance, ref transform, sparam, (float)instance.GlobalTime);
var app = (FxAppearance)reference.Paired[0].Node;
app.OnParticleSpawned(idx, instance.Pool.Particles[idx].Appearance, instance);
//Simulate time already alive (TODO fix the time loop properly)
instance.Pool.Particles[idx].TimeAlive = (float)dt;
instance.Pool.Particles[idx].Position += instance.Pool.Particles[idx].Normal * (float)dt;
count++;
}
}
}
else
{
instance.SpawnTimers[reference.EmitterIndex] = 0;
}
instance.ParticleCounts[reference.EmitterIndex] = count;
}
public override void Draw(ref Particle particle, int pidx, float lasttime, float globaltime, NodeReference reference, ResourceManager res, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
var time = particle.TimeAlive / particle.LifeSpan;
var node_tr = GetAttachment(reference, transform);
Vector3 deltap;
Quaternion deltaq;
if (DoTransform(reference, sparam, lasttime, globaltime, out deltap, out deltaq))
{
particle.Position += deltap;
particle.Orientation *= deltaq;
}
var p = node_tr.Transform(particle.Orientation * particle.Position);
Texture2D tex;
Vector2 tl, tr, bl, br;
HandleTexture(res, sparam, globaltime, ref particle, out tex, out tl, out tr, out bl, out br);
var c = Color.GetValue(sparam, time);
var a = Alpha.GetValue(sparam, time);
instance.Pool.DrawBasic(
particle.Instance,
this,
p,
new Vector2(Size.GetValue(sparam, time)) * 2,
new Color4(c, a),
tl,
tr,
bl,
br,
Rotate == null ? 0f : MathHelper.DegreesToRadians(Rotate.GetValue(sparam, time))
);
}
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);
}
}
public override void Draw(ref Particle particle, int pidx, float lasttime, float globaltime, NodeReference reference, ResourceManager res, ParticleEffectInstance instance, ref Matrix4 transform, float sparam)
{
var time = particle.TimeAlive / particle.LifeSpan;
var node_tr = GetAttachment(reference, transform);
var p = node_tr.Transform(particle.Position);
Texture2D tex;
Vector2 tl, tr, bl, br;
HandleTexture(res, globaltime, sparam, ref particle, out tex, out tl, out tr, out bl, out br);
var c = Color.GetValue(sparam, time);
var a = Alpha.GetValue(sparam, time);
var p2 = node_tr.Transform(particle.Position + particle.Normal);
//var n = (p - p2).Normalized();
var n = Vector3.UnitZ;
/*billboards.DrawPerspective(
* tex,
* p,
* new Vector2(Width.GetValue(sparam, time), Height.GetValue(sparam, time)),
* new Color4(c, a),
* tl,
* tr,
* bl,
* br,
* n,
* Rotate == null ? 0f : MathHelper.DegreesToRadians(Rotate.GetValue(sparam, time)),
* SortLayers.OBJECT,
* BlendInfo
* );*/
}