protected virtual void OnPopulateMesh(VertexHelper vh)
{
UIVertex uiVertex = (UIVertex)null;
Vector3 vector3_1;
// ISSUE: explicit reference operation
((Vector3)@vector3_1).\u002Ector(-1f, 1f, 0.0f);
Vector3 vector3_2;
// ISSUE: explicit reference operation
((Vector3)@vector3_2).\u002Ector(1f, 1f, 0.0f);
Vector3 vector3_3;
// ISSUE: explicit reference operation
((Vector3)@vector3_3).\u002Ector(-1f, -1f, 0.0f);
Vector3 vector3_4;
// ISSUE: explicit reference operation
((Vector3)@vector3_4).\u002Ector(1f, -1f, 0.0f);
Vector2 vector2_1;
// ISSUE: explicit reference operation
((Vector2)@vector2_1).\u002Ector(0.0f, 1f);
Vector2 vector2_2;
// ISSUE: explicit reference operation
((Vector2)@vector2_2).\u002Ector(1f, 1f);
Vector2 vector2_3;
// ISSUE: explicit reference operation
((Vector2)@vector2_3).\u002Ector(0.0f, 0.0f);
Vector2 vector2_4;
// ISSUE: explicit reference operation
((Vector2)@vector2_4).\u002Ector(1f, 0.0f);
Vector2 vector2_5;
// ISSUE: explicit reference operation
((Vector2)@vector2_5).\u002Ector(0.0f, 0.0f);
float num1 = 1f;
float num2 = 1f;
float num3 = 1f;
int num4 = 1;
int num5 = 0;
vh.Clear();
if (this.textureSheetAnimationEnable)
{
num1 = 1f / (float)this.textureSheetAnimation.TilesX;
num2 = 1f / (float)this.textureSheetAnimation.TilesY;
vector2_2.x = (__Null)(double)(vector2_4.x = (__Null)num1);
vector2_3.y = (__Null)(double)(vector2_4.y = (__Null)(1f - num2));
num3 = this.textureSheetAnimation.Animation != UIParticleSystem.TextureSheetAnimation.AnimationRow.WholeSheet ? (float)this.textureSheetAnimation.TilesX : (float)(this.textureSheetAnimation.TilesX * this.textureSheetAnimation.TilesY);
num4 = Mathf.FloorToInt(num3);
}
if (this.RenderMode == UIParticleSystem.ParticleRenderMode.Billboard)
{
for (int index = this.mParticles.Count - 1; index >= 0; --index)
{
UIParticleSystem.Particle mParticle = this.mParticles[index];
Quaternion quaternion = Quaternion.AngleAxis(mParticle.rotation, Vector3.get_forward());
float size = mParticle.size;
float num6 = (float)(1.0 - (double)mParticle.lifetime / (double)mParticle.startLifetime);
Color32 color32 = mParticle.color;
if (this.textureSheetAnimationEnable)
{
int num7 = Mathf.FloorToInt(this.textureSheetAnimation.FrameOverTime.Evaluate(num6) * num3) * this.textureSheetAnimation.Cycles % num4;
vector2_5.x = (__Null)((double)(num7 % this.textureSheetAnimation.TilesX) * (double)num1);
vector2_5.y = this.textureSheetAnimation.Animation != UIParticleSystem.TextureSheetAnimation.AnimationRow.WholeSheet ? (__Null)(1.0 - (double)(mParticle.randomSeed % this.textureSheetAnimation.TilesY) * (double)num2) : (__Null)(1.0 - (double)(num7 / this.textureSheetAnimation.TilesY) * (double)num2);
}
if (this.sizeOverLifetimeEnable)
{
size *= this.sizeOverLifetime.Evaluate(num6);
}
if (this.colorOverLifetimeEnable)
{
color32 = Color32.op_Implicit(Color.op_Multiply(Color32.op_Implicit(color32), this.colorOverLifetime.Evaluate(num6)));
}
uiVertex.position = (__Null)Vector3.op_Addition(mParticle.position, Vector3.op_Multiply(Quaternion.op_Multiply(quaternion, vector3_1), size));
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_1);
vh.AddVert(uiVertex);
uiVertex.position = (__Null)Vector3.op_Addition(mParticle.position, Vector3.op_Multiply(Quaternion.op_Multiply(quaternion, vector3_2), size));
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_2);
vh.AddVert(uiVertex);
uiVertex.position = (__Null)Vector3.op_Addition(mParticle.position, Vector3.op_Multiply(Quaternion.op_Multiply(quaternion, vector3_4), size));
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_4);
vh.AddVert(uiVertex);
uiVertex.position = (__Null)Vector3.op_Addition(mParticle.position, Vector3.op_Multiply(Quaternion.op_Multiply(quaternion, vector3_3), size));
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_3);
vh.AddVert(uiVertex);
vh.AddTriangle(num5, num5 + 1, num5 + 2);
vh.AddTriangle(num5 + 2, num5 + 3, num5);
num5 += 4;
}
}
else
{
for (int index = this.mParticles.Count - 1; index >= 0; --index)
{
UIParticleSystem.Particle mParticle = this.mParticles[index];
float size = mParticle.size;
float num6 = (float)(1.0 - (double)mParticle.lifetime / (double)mParticle.startLifetime);
Color32 color32 = mParticle.color;
if (this.sizeOverLifetimeEnable)
{
size *= this.sizeOverLifetime.Evaluate(num6);
}
Vector2 vector2_6;
Vector2 right;
// ISSUE: explicit reference operation
if ((double)((Vector2)@mParticle.visualVelocity).get_sqrMagnitude() > 0.0)
{
// ISSUE: explicit reference operation
float num7 = this.m_StretchBillboard.LengthScale * (float)(1.0 + (double)((Vector3)@mParticle.velocity).get_magnitude() * (double)this.m_StretchBillboard.SpeedScale);
// ISSUE: explicit reference operation
vector2_6 = ((Vector2)@mParticle.visualVelocity).get_normalized();
// ISSUE: explicit reference operation
((Vector2)@right).\u002Ector((float)vector2_6.y * size, (float)-vector2_6.x * size);
vector2_6 = Vector2.op_Multiply(vector2_6, size * 2f * num7);
}
else
{
vector2_6 = Vector2.get_up();
right = Vector2.get_right();
}
if (this.textureSheetAnimationEnable)
{
int num7 = Mathf.FloorToInt(this.textureSheetAnimation.FrameOverTime.Evaluate(num6) * num3) * this.textureSheetAnimation.Cycles % num4;
vector2_5.x = (__Null)((double)(num7 % this.textureSheetAnimation.TilesX) * (double)num1);
vector2_5.y = this.textureSheetAnimation.Animation != UIParticleSystem.TextureSheetAnimation.AnimationRow.WholeSheet ? (__Null)(1.0 - (double)(mParticle.randomSeed % this.textureSheetAnimation.TilesY) * (double)num2) : (__Null)(1.0 - (double)(num7 / this.textureSheetAnimation.TilesY) * (double)num2);
}
if (this.colorOverLifetimeEnable)
{
color32 = Color32.op_Implicit(Color.op_Multiply(Color32.op_Implicit(color32), this.colorOverLifetime.Evaluate(num6)));
}
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).x = mParticle.position.x - right.x;
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).y = mParticle.position.y - right.y;
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_1);
vh.AddVert(uiVertex);
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).x = mParticle.position.x + right.x;
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).y = mParticle.position.y + right.y;
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_2);
vh.AddVert(uiVertex);
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).x = mParticle.position.x + right.x - vector2_6.x;
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).y = mParticle.position.y + right.y - vector2_6.y;
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_4);
vh.AddVert(uiVertex);
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).x = mParticle.position.x - right.x - vector2_6.x;
// ISSUE: explicit reference operation
// ISSUE: cast to a reference type
// ISSUE: explicit reference operation
(^ (Vector3&)@uiVertex.position).y = mParticle.position.y - right.y - vector2_6.y;
uiVertex.color = (__Null)color32;
uiVertex.uv0 = (__Null)Vector2.op_Addition(vector2_5, vector2_3);
vh.AddVert(uiVertex);
vh.AddTriangle(num5, num5 + 1, num5 + 2);
vh.AddTriangle(num5 + 2, num5 + 3, num5);
num5 += 4;
}
}
}
public void AdvanceTime(float dt)
{
dt *= this.playbackSpeed;
this.mPrevTime = this.mTime;
this.mTime += dt;
if ((double)this.mTime >= (double)this.duration)
{
if (this.loop)
{
this.mTime = 0.0f;
this.mPrevTime = 0.0f;
}
else
{
this.mTime = this.duration;
}
}
for (int index = this.mParticles.Count - 1; index >= 0; --index)
{
UIParticleSystem.Particle mParticle = this.mParticles[index];
mParticle.lifetime -= dt;
if ((double)mParticle.lifetime <= 0.0)
{
this.mParticles.RemoveAt(index);
this.mDeadParticles.Add(mParticle);
}
else
{
float num1 = (float)(1.0 - (double)mParticle.lifetime / (double)mParticle.startLifetime);
UIParticleSystem.Particle particle1 = mParticle;
particle1.position = Vector3.op_Addition(particle1.position, Vector3.op_Multiply(mParticle.velocity, dt));
mParticle.rotation += mParticle.angularVelocity * dt;
if ((double)this.gravityMultipler > 0.0)
{
UIParticleSystem.Particle particle2 = mParticle;
particle2.velocity = Vector3.op_Addition(particle2.velocity, Vector3.op_Multiply(Physics.get_gravity(), dt));
}
mParticle.visualVelocity = Vector2.op_Implicit(mParticle.velocity);
if (this.velocityOverLifetimeEnable)
{
float num2 = this.velocityOverLifetime.X.Evaluate(num1) * this.velocityOverLifetime.ScaleX;
float num3 = this.velocityOverLifetime.Y.Evaluate(num1) * this.velocityOverLifetime.ScaleY;
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Vector3& local1 = @mParticle.position;
// ISSUE: explicit reference operation
// ISSUE: explicit reference operation
(^ local1).x = (__Null)((^ local1).x + (double)dt * (double)num2);
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Vector3& local2 = @mParticle.position;
// ISSUE: explicit reference operation
// ISSUE: explicit reference operation
(^ local2).y = (__Null)((^ local2).y + (double)dt * (double)num3);
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Vector2& local3 = @mParticle.visualVelocity;
// ISSUE: explicit reference operation
// ISSUE: explicit reference operation
(^ local3).x = (__Null)((^ local3).x + (double)num2);
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Vector2& local4 = @mParticle.visualVelocity;
// ISSUE: explicit reference operation
// ISSUE: explicit reference operation
(^ local4).y = (__Null)((^ local4).y + (double)num3);
}
if (this.rotationOverLifetimeEnable)
{
mParticle.rotation = mParticle.startRotation + this.rotationOverLifetime.Evaluate(num1);
}
}
}
if (!this.emit)
{
return;
}
if (this.burstEnable)
{
for (int index = 0; index < this.burst.Points.Length; ++index)
{
if ((double)this.mPrevTime <= (double)this.burst.Points[index].Time && (double)this.burst.Points[index].Time < (double)this.mTime)
{
this.mSpawnCount += (float)this.burst.Points[index].Count;
}
}
}
if (0.0 <= (double)this.mTime && (double)this.mTime < (double)this.duration)
{
this.mSpawnCount += this.emissionRate * dt;
}
if ((double)this.mSpawnCount >= 1.0)
{
int num = Mathf.FloorToInt(this.mSpawnCount);
for (int index = 0; index < num && this.mParticles.Count < this.maxParticles; ++index)
{
UIParticleSystem.Particle particle1;
if (this.mDeadParticles.Count > 0)
{
particle1 = this.mDeadParticles[this.mDeadParticles.Count - 1];
this.mDeadParticles.RemoveAt(this.mDeadParticles.Count - 1);
}
else
{
particle1 = new UIParticleSystem.Particle();
}
particle1.randomSeed = Random.Range(0, (int)ushort.MaxValue);
particle1.startLifetime = particle1.lifetime = this.startLifetime.Evaluate();
particle1.color = Color32.op_Implicit(this.startColor.Evaluate());
particle1.rotation = particle1.startRotation = this.startRotation.Evaluate();
particle1.size = this.startSize.Evaluate();
particle1.angularVelocity = !this.angularVelocityEnable ? 0.0f : this.angularVelocity.Evaluate();
switch (this.emitterType)
{
case UIParticleSystem.EmitterTypes.Cone:
particle1.velocity = Quaternion.op_Multiply(Quaternion.AngleAxis(this.coneEmitter.Angle.Evaluate() + this.emitterRotation, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up()));
// ISSUE: explicit reference operation
particle1.position = Vector3.op_Multiply(((Vector3)@particle1.velocity).get_normalized(), this.coneEmitter.Radius.Evaluate());
if (this.coneEmitter.RandomDirection)
{
particle1.velocity = Quaternion.op_Multiply(Quaternion.AngleAxis(Random.get_value() * 360f, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up()));
break;
}
break;
case UIParticleSystem.EmitterTypes.Sphere:
if (this.sphereEmitter.RandomDirection)
{
particle1.velocity = Quaternion.op_Multiply(Quaternion.AngleAxis(Random.get_value() * 360f, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up()));
particle1.position = Vector3.op_Multiply(Quaternion.op_Multiply(Quaternion.AngleAxis(Random.get_value() * 360f, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up())), this.sphereEmitter.Radius.Evaluate());
}
else
{
particle1.velocity = Quaternion.op_Multiply(Quaternion.AngleAxis(Random.get_value() * 360f, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up()));
// ISSUE: explicit reference operation
particle1.position = Vector3.op_Multiply(((Vector3)@particle1.velocity).get_normalized(), this.sphereEmitter.Radius.Evaluate());
}
if (this.sphereEmitter.Inverse)
{
particle1.velocity = Vector3.op_UnaryNegation(particle1.velocity);
break;
}
break;
case UIParticleSystem.EmitterTypes.Box:
particle1.velocity = !this.boxEmitter.RandomDirection ? Quaternion.op_Multiply(Quaternion.AngleAxis(this.emitterRotation, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up())) : Quaternion.op_Multiply(Quaternion.AngleAxis(Random.get_value() * 360f, Vector3.get_forward()), Vector2.op_Implicit(Vector2.get_up()));
particle1.position = new Vector3((Random.get_value() - 0.5f) * this.boxEmitter.Width, (Random.get_value() - 0.5f) * this.boxEmitter.Height, 0.0f);
break;
}
UIParticleSystem.Particle particle2 = particle1;
particle2.velocity = Vector3.op_Multiply(particle2.velocity, this.startSpeed.Evaluate());
this.mParticles.Add(particle1);
}
this.mSpawnCount -= (float)num;
}
this.SetVerticesDirty();
}
