protected void UpdateRotAngle(float deltaTime)
{
if (!UseDeltaAngle)
{
return;
}
SpreadAngle = CurveAngle.Evaluate(Owner.GetElapsedTime());
for (int i = NumVerts / 2; i < NumVerts; i++)
{
Verts[i] = Verts[i - NumVerts / 2] + Vector3.up * Size.y;
Verts[i] = Vector3.RotateTowards(Verts[i], Verts[i - NumVerts / 2], SpreadAngle * Mathf.Deg2Rad, 0);
}
}
public void StopSmoothly(float fadeTime)
{
mStopped = true;
emitter.StopEmit();
for (int i = 0; i < MaxENodes; i++)
{
EffectNode node = ActiveENodes[i];
if (node == null)
{
continue;
}
if (!IsNodeLifeLoop && node.GetLifeTime() < fadeTime)
{
fadeTime = node.GetLifeTime() - node.GetElapsedTime();
}
node.Fade(fadeTime);
}
}
//更新每个顶点元素的位置
public void UpdateVertices(Vector3 eyePos)
{
Vector3 chainTangent;
float uvSegment = 0f;
float uvLen = 0f;
float trailLen = ElemLength * (MaxElements - 2);
Vector3 mscale = Vector3.one * Owner.Owner.Owner.Scale;
if (Head != CHAIN_EMPTY && Head != Tail)
{
int laste = Head;
float totalUVLen = 0;
if (IsScale)
{
for (int e = Head; ; ++e)
{
if (e == MaxElements)
{
e = 0;
}
Element elem = ElementArray[e];
if (e * 2 >= 65536)
{
Debug.LogError("Too many elements!");
}
int nexte = e + 1;
if (nexte == MaxElements)
{
nexte = 0;
}
if (e == Tail)
{
break; // last one
}
totalUVLen += (ElementArray[nexte].Position - elem.Position).magnitude;
}
}
//使用Sine波动每个元素 位置
if (Owner.IsSine)
{
float SineFreqTime = Owner.SineFreqTime;
float SineFreqDist = Owner.SineFreqDist;
float SineMag = Owner.SineMagnitude;
float t = Owner.GetElapsedTime();
float pi2 = 2 * Mathf.PI;
for (int e = Head; ; ++e)
{
if (e == MaxElements)
{
e = 0;
}
Element elem = ElementArray[e];
int nexte = e + 1;
if (nexte == MaxElements)
{
nexte = 0;
}
if (e == Tail)
{
break;
}
//根据 下一个顶点的位置 和 当前的顶点位置
Element next = ElementArray[nexte];
var dir = elem.InitPos - next.InitPos;
var xDir = Vector3.Cross(dir, Vector3.up);
float x = elem.Position.x;
float z = elem.Position.z;
float dist = Mathf.Sqrt(x * x + z * z);
var virbrate = SineMag * Mathf.Sin(pi2 * SineFreqTime * t + pi2 * SineFreqDist * dist) * xDir.normalized;
elem.Position = elem.InitPos + virbrate;
elem.EndPos = elem.InitEndPos + virbrate;
}
}
//重新计算VertexPool里面每一个顶点的世界坐标位置
for (int e = Head; ; ++e) // until break
{
// Wrap forwards
if (e == MaxElements)
{
e = 0;
}
Element elem = ElementArray[e];
if (e * 2 >= 65536)
{
Debug.LogError("Too many elements!");
}
int baseIdx = Vertexsegment.VertStart + e * 2;
// Get index of next item
int nexte = e + 1;
if (nexte == MaxElements)
{
nexte = 0;
}
if (e == Head)
{
// No laste, use next item
//chainTangent = ElementArray[nexte].Position - elem.Position;
chainTangent = Vector3.Scale(ElementArray[nexte].Position, mscale) - Vector3.Scale(elem.Position, mscale);
}
else if (e == Tail)
{
// No nexte, use only last item
//chainTangent = elem.Position - ElementArray[laste].Position;
chainTangent = Vector3.Scale(elem.Position, mscale) - Vector3.Scale(ElementArray[laste].Position, mscale);
}
else
{
// A mid position, use tangent across both prev and next
//chainTangent = ElementArray[nexte].Position - ElementArray[laste].Position;
chainTangent = Vector3.Scale(ElementArray[nexte].Position, mscale) - Vector3.Scale(ElementArray[laste].Position, mscale);
}
Vector3 vP1ToEye;
// fixed 2012.7.7 to use slash trail.
if (!UseFaceObject)
{
//vP1ToEye = eyePos - elem.Position;
vP1ToEye = eyePos - Vector3.Scale(elem.Position, mscale);
}
else
{
vP1ToEye = elem.Normal;
}
Vector3 vPerpendicular = Vector3.Cross(chainTangent, vP1ToEye);
vPerpendicular.Normalize();
vPerpendicular *= (elem.Width * 0.5f);
Vector3 pos0;
Vector3 pos1;
if (IsWeapon)
{
pos0 = elem.Position;
pos1 = elem.EndPos;
}
else
{
pos0 = elem.Position - vPerpendicular;
pos1 = elem.Position + vPerpendicular;
}
VertexPool pool = Vertexsegment.Pool;
if (IsScale)
{
if (StretchType == 0)
{
uvSegment = (uvLen / totalUVLen) * Mathf.Abs(UVDimensions.y);
}
else
{
uvSegment = (uvLen / totalUVLen) * Mathf.Abs(UVDimensions.x);
}
}
else
{
if (StretchType == 0)
{
uvSegment = (uvLen / trailLen) * Mathf.Abs(UVDimensions.y);
}
else
{
uvSegment = (uvLen / trailLen) * Mathf.Abs(UVDimensions.x);
}
}
Vector2 uvCoord = Vector2.zero;
// pos0
pool.Vertices[baseIdx] = pos0;
pool.Colors[baseIdx] = Color;
if (StretchType == 0)
{
uvCoord.x = LowerLeftUV.x + UVDimensions.x;
uvCoord.y = LowerLeftUV.y - uvSegment;
}
else
{
uvCoord.x = LowerLeftUV.x + uvSegment;
uvCoord.y = LowerLeftUV.y;
}
pool.UVs[baseIdx] = uvCoord;
//pos1
pool.Vertices[baseIdx + 1] = pos1;
pool.Colors[baseIdx + 1] = Color;
if (StretchType == 0)
{
uvCoord.x = LowerLeftUV.x;
uvCoord.y = LowerLeftUV.y - uvSegment;
}
else
{
uvCoord.x = LowerLeftUV.x + uvSegment;
uvCoord.y = LowerLeftUV.y - Mathf.Abs(UVDimensions.y);
}
pool.UVs[baseIdx + 1] = uvCoord;
if (e == Tail)
{
break; // last one
}
laste = e;
uvLen += (ElementArray[nexte].Position - elem.Position).magnitude;
} // element
Vertexsegment.Pool.UVChanged = true;
Vertexsegment.Pool.VertChanged = true;
Vertexsegment.Pool.ColorChanged = true;
} // segment valid?
}
