void FDestructibleMeshEditorViewportClient::Draw( const FSceneView* View,FPrimitiveDrawInterface* PDI )
{
FEditorViewportClient::Draw(View, PDI);
#if WITH_APEX
const bool DrawChunkMarker = true;
UDestructibleComponent* Comp = PreviewDestructibleComp.Get();
if (Comp)
{
if (Comp->DestructibleMesh != NULL && Comp->DestructibleMesh->FractureSettings != NULL)
{
if (Comp->DestructibleMesh->ApexDestructibleAsset != NULL)
{
NxDestructibleAsset* Asset = Comp->DestructibleMesh->ApexDestructibleAsset;
const NxRenderMeshAsset* RenderMesh = Asset->getRenderMeshAsset();
for (uint32 i=0; i < Asset->getChunkCount(); ++i)
{
int32 PartIdx = Asset->getPartIndex(i);
int32 BoneIdx = i+1;
if ( SelectedChunkIndices.Contains(i) )
{
PxBounds3 PBounds = RenderMesh->getBounds(PartIdx);
FVector Center = P2UVector(PBounds.getCenter()) + Comp->GetBoneLocation(Comp->GetBoneName(BoneIdx));
FVector Extent = P2UVector(PBounds.getExtents());
FBox Bounds(Center - Extent, Center + Extent);
DrawWireBox(PDI, Bounds, FColor::Blue, SDPG_World);
}
}
}
}
}
#endif // WITH_APEX
}
/** Set info in the HitResult (Actor, Component, PhysMaterial, BoneName, Item) based on the supplied shape and face index */
static void SetHitResultFromShapeAndFaceIndex(const PxShape* PShape, const PxRigidActor* PActor, const uint32 FaceIndex, FHitResult& OutResult, bool bReturnPhysMat)
{
const FBodyInstance* BodyInst = FPhysxUserData::Get<FBodyInstance>(PActor->userData);
FDestructibleChunkInfo* ChunkInfo = FPhysxUserData::Get<FDestructibleChunkInfo>(PShape->userData);
UPrimitiveComponent* PrimComp = FPhysxUserData::Get<UPrimitiveComponent>(PShape->userData);
if(BodyInst)
{
BodyInst = BodyInst->GetOriginalBodyInstance(PShape);
}
if (ChunkInfo == NULL)
{
ChunkInfo = FPhysxUserData::Get<FDestructibleChunkInfo>(PActor->userData);
}
UPrimitiveComponent* OwningComponent = ChunkInfo != NULL ? ChunkInfo->OwningComponent.Get() : NULL;
if (OwningComponent == NULL && BodyInst != NULL)
{
OwningComponent = BodyInst->OwnerComponent.Get();
}
// If the shape has a different parent component, we take that one instead of the ChunkInfo. This can happen in some
// cases where APEX moves shapes internally to another actor ( ex. FormExtended structures )
if (PrimComp != NULL && OwningComponent != PrimComp)
{
OwningComponent = PrimComp;
}
OutResult.PhysMaterial = NULL;
bool bReturnBody = false;
// Grab actor/component
if( OwningComponent )
{
OutResult.Actor = OwningComponent->GetOwner();
OutResult.Component = OwningComponent;
if (bReturnPhysMat)
{
// This function returns the single material in all cases other than trimesh or heightfield
if(PxMaterial* PxMat = PShape->getMaterialFromInternalFaceIndex(FaceIndex))
{
OutResult.PhysMaterial = FPhysxUserData::Get<UPhysicalMaterial>(PxMat->userData);
}
}
bReturnBody = OwningComponent->bMultiBodyOverlap;
}
// For destructibles give the ChunkInfo-Index as Item
if (bReturnBody && ChunkInfo)
{
OutResult.Item = ChunkInfo->ChunkIndex;
UDestructibleComponent* DMComp = Cast<UDestructibleComponent>(OwningComponent);
OutResult.BoneName = DMComp->GetBoneName(UDestructibleComponent::ChunkIdxToBoneIdx(ChunkInfo->ChunkIndex));
}
// If BodyInstance and not destructible, give BodyIndex as Item
else if (BodyInst)
{
OutResult.Item = BodyInst->InstanceBodyIndex;
const UBodySetup* BodySetup = BodyInst->BodySetup.Get();
if (BodySetup)
{
OutResult.BoneName = BodySetup->BoneName;
}
}
else
{
// invalid index
OutResult.Item = INDEX_NONE;
OutResult.BoneName = NAME_None;
}
OutResult.FaceIndex = INDEX_NONE;
}
void FDestructibleMeshEditorViewportClient::ProcessClick( class FSceneView& View, class HHitProxy* HitProxy, FKey Key, EInputEvent Event, uint32 HitX, uint32 HitY )
{
#if WITH_APEX
bool bKeepSelection = Viewport->KeyState(EKeys::LeftControl) || Viewport->KeyState(EKeys::RightControl);
bool bSelectionChanged = false;
if (Key == EKeys::LeftMouseButton && Event == EInputEvent::IE_Released)
{
UDestructibleComponent* Comp = PreviewDestructibleComp.Get();
NxDestructibleAsset* Asset = Comp->DestructibleMesh->ApexDestructibleAsset;
const NxRenderMeshAsset* RenderMesh = Asset->getRenderMeshAsset();
FVector2D ScreenPos(HitX, HitY);
FVector ClickOrigin, ViewDir;
View.DeprojectFVector2D(ScreenPos, ClickOrigin, ViewDir);
float NearestHitDistance = FLT_MAX;
int32 ClickedChunk = -1;
for (uint32 i=0; i < Asset->getChunkCount(); ++i)
{
int32 PartIdx = Asset->getPartIndex(i);
int32 BoneIdx = i+1;
if (!Comp->IsBoneHidden(BoneIdx))
{
PxBounds3 PBounds = RenderMesh->getBounds(PartIdx);
FVector Center = P2UVector(PBounds.getCenter()) + Comp->GetBoneLocation(Comp->GetBoneName(BoneIdx));
FVector Extent = P2UVector(PBounds.getExtents());
FBox Bounds(Center - Extent, Center + Extent);
FVector HitLoc, HitNorm;
float HitTime;
if (FMath::LineExtentBoxIntersection(Bounds, ClickOrigin, ClickOrigin + ViewDir * 1000.0f, FVector(0,0,0), HitLoc, HitNorm, HitTime))
{
float dist = (HitLoc - ClickOrigin).SizeSquared();
if (dist < NearestHitDistance)
{
NearestHitDistance = dist;
ClickedChunk = i;
}
}
}
}
if (ClickedChunk >= 0)
{
int32 Idx = SelectedChunkIndices.Find(ClickedChunk);
if (Idx < 0)
{
if (!bKeepSelection) { SelectedChunkIndices.Empty(); }
SelectedChunkIndices.Add(ClickedChunk);
bSelectionChanged = true;
}
else
{
SelectedChunkIndices.RemoveAt(Idx);
bSelectionChanged = true;
}
}
else if (!bKeepSelection)
{
SelectedChunkIndices.Empty();
bSelectionChanged = true;
}
}
if (bSelectionChanged)
{
UpdateChunkSelection(SelectedChunkIndices);
}
#endif // WITH_APEX
}