C++ (Cpp) UpdateSegment Examples

Example #1

File: Hair.cpp Project: ArchDD/Archs-HairyLab-UE4

void AHair::InsertNode()
{
	AMyPlayerController* Controller = GetController();
	if (!Controller) return;

	if (Controller->TargetNodes.Num() != 2)
	{
		UE_LOG(LogTemp, Warning, TEXT("Must select two nodes adjacent in index"));
		return;
	}

	AHairNode* Node0 = Controller->TargetNodes[0];
	AHairNode* Node1 = Controller->TargetNodes[1];

	if (Node0->Segment != Node1->Segment)
	{
		UE_LOG(LogTemp, Warning, TEXT("Nodes do not belong to same segment"));
		return;
	}

	//AHairNode* NodeA;
	//AHairNode* NodeB;
	if (!(Node0->Index+1 == Node1->Index || Node1->Index+1 == Node0->Index))
	{
		UE_LOG(LogTemp, Warning, TEXT("Non-adjacent indices"));
		return;
	}

	AHairSegment* Segment = Node0->Segment;
	USplineComponent* Spline = Segment->Spline;
	float Distance = (Spline->GetDistanceAlongSplineAtSplinePoint(Node0->Index) + Spline->GetDistanceAlongSplineAtSplinePoint(Node1->Index)) / 2.0f;
	int Index = FMath::Min(Node0->Index, Node1->Index)+1;
	FVector Loc = Spline->GetLocationAtDistanceAlongSpline(Distance, ESplineCoordinateSpace::World);
	FRotator Rot = FMath::Lerp(Node0->GetActorRotation(), Node1->GetActorRotation(), 0.5f);
	SpawnNode(Segment, Index, Loc, Rot);
	Spline->AddSplinePointAtIndex(Loc, Index, ESplineCoordinateSpace::World);
	Spline->SetUpVectorAtSplinePoint(Index, UKismetMathLibrary::GetUpVector(Rot), ESplineCoordinateSpace::World);
	UpdateSegment(Segment);
}

Example #2

File: ogemitterscrollingray.cpp Project: AndiSVCorporate/orange-grass

// Update.
void COGEmitterScrollingRay::Update (unsigned long _ElapsedTime)
{
    if (m_Status == OG_EFFECTSTATUS_INACTIVE || !m_bPosReady)
        return;

    bool bAdd = false;
    float fNewSegScale = 0.0f;

    std::list<ParticleFormat>::iterator iter = m_BBList.begin();
    while (iter != m_BBList.end())
    {
        ParticleFormat& seg = (*iter);

        if (seg.pos == 0.0f && seg.scale < 1.0f)
        {
            float fAdd = m_fSpeed / m_fSegment;
            if (seg.scale + fAdd > 1.0f)
            {
                float fMove = seg.scale + fAdd - 1.0f;

                bAdd = true;
                fNewSegScale = fMove;

                if (ScrollSegment(seg, fMove))
                {
                    GetEffectsManager()->ReleaseParticle(seg.verts);
                    iter = m_BBList.erase(iter);
                    continue;
                }
            }
            else
            {
                seg.scale += fAdd;
                seg.start -= fAdd;
            }
        }
        else
        {
            if (seg.pos == 0.0f && m_fSpeed > 0.0f)
            {
                bAdd = true;
                fNewSegScale = (m_fSpeed / m_fSegment);
            }

            if (ScrollSegment(seg, m_fSpeed))
            {
                GetEffectsManager()->ReleaseParticle(seg.verts);
                iter = m_BBList.erase(iter);
                continue;
            }
        }

        UpdateSegment(seg);
        ++iter;
    }

    if (bAdd)
    {
        AddSegment(0.0f, fNewSegScale);
    }
}