//!< FPrimitiveSceneProxy
virtual void GetDynamicMeshElements(const TArray<const FSceneView*>& Views, const FSceneViewFamily& ViewFamily, uint32 VisibilityMap, class FMeshElementCollector& Collector) const override
{
FDynamicMeshBuilder MeshBuilder;
const auto Num = 20;
const auto DeltaUV = 1.0f / (Num - 1);
TArray<FDynamicMeshVertex> Vertices;
Vertices.Reserve(Num * Num);
for (auto i = 0; i < Num; ++i)
{
for (auto j = 0; j < Num; ++j)
{
const auto UV = FVector2D(DeltaUV * j, DeltaUV * i);
FDynamicMeshVertex Vertex;
Vertex.Position = GetPosition(UV);
Vertex.TextureCoordinate = GetUV(UV);
const auto Edge01 = GetPosition(UV + FVector2D(0.01f, 0.0f)) - Vertex.Position;
const auto Edge02 = GetPosition(UV - FVector2D(0.0f, 0.01f)) - Vertex.Position;
Vertex.TangentX = Edge01.GetSafeNormal();
Vertex.TangentZ = (Edge02 ^ Edge01).GetSafeNormal();
Vertex.Color = FColor::Green;
Vertices.Add(Vertex);
}
}
MeshBuilder.AddVertices(Vertices);
TArray<int32> Indices;
Indices.Reserve((Num - 1) * (Num - 1) * 6);
for (auto i = 0; i < Num - 1; ++i)
{
for (auto j = 0; j < Num - 1; ++j)
{
const auto Index = j + i * Num;
Indices.Add(Index);
Indices.Add(Index + Num);
Indices.Add(Index + 1);
Indices.Add(Index + 1);
Indices.Add(Index + Num);
Indices.Add(Index + Num + 1);
}
}
MeshBuilder.AddTriangles(Indices);
auto MaterialRenderProxy = UMaterial::GetDefaultMaterial(MD_Surface)->GetRenderProxy(IsSelected());
if (nullptr != MaterialInterface)
{
MaterialRenderProxy = MaterialInterface->GetRenderProxy(false);
}
if (Views[0]->Family->EngineShowFlags.Wireframe)
{
MaterialRenderProxy = GEngine->WireframeMaterial->GetRenderProxy(IsSelected());
}
MeshBuilder.GetMesh(GetLocalToWorld(), MaterialRenderProxy, 0, false, false, 0, Collector);
}
void FDebugRenderSceneProxy::GetDynamicMeshElements(const TArray<const FSceneView*>& Views, const FSceneViewFamily& ViewFamily, uint32 VisibilityMap, FMeshElementCollector& Collector) const
{
QUICK_SCOPE_CYCLE_COUNTER( STAT_DebugRenderSceneProxy_GetDynamicMeshElements );
// Draw solid spheres
struct FMaterialCache
{
FMaterialCache() : bUseFakeLight(false) {}
FMaterialRenderProxy* operator[](FLinearColor Color)
{
FMaterialRenderProxy* MeshColor = NULL;
const uint32 HashKey = GetTypeHash(Color);
if (MeshColorInstances.Contains(HashKey))
{
MeshColor = *MeshColorInstances.Find(HashKey);
}
else
{
if (bUseFakeLight && SolidMeshMaterial.IsValid())
{
MeshColor = new(FMemStack::Get()) FColoredMaterialRenderProxy(
SolidMeshMaterial->GetRenderProxy(false, false),
Color,
"GizmoColor"
);
}
else
{
MeshColor = new(FMemStack::Get()) FColoredMaterialRenderProxy(GEngine->DebugMeshMaterial->GetRenderProxy(false, false), Color);
}
MeshColorInstances.Add(HashKey, MeshColor);
}
return MeshColor;
}
void UseFakeLight(bool UseLight, class UMaterial* InMaterial) { bUseFakeLight = UseLight; SolidMeshMaterial = InMaterial; }
TMap<uint32, FMaterialRenderProxy*> MeshColorInstances;
TWeakObjectPtr<class UMaterial> SolidMeshMaterial;
bool bUseFakeLight;
};
FMaterialCache MaterialCache[2];
MaterialCache[1].UseFakeLight(true, SolidMeshMaterial.Get());
for (int32 ViewIndex = 0; ViewIndex < Views.Num(); ViewIndex++)
{
if (VisibilityMap & (1 << ViewIndex))
{
const FSceneView* View = Views[ViewIndex];
FPrimitiveDrawInterface* PDI = Collector.GetPDI(ViewIndex);
// Draw Lines
const int32 LinesNum = Lines.Num();
PDI->AddReserveLines(SDPG_World, LinesNum, false, false);
for (const auto& CurrentLine : Lines)
{
PDI->DrawLine(CurrentLine.Start, CurrentLine.End, CurrentLine.Color, SDPG_World, CurrentLine.Thickness, 0, CurrentLine.Thickness > 0);
}
// Draw Dashed Lines
for(int32 DashIdx=0; DashIdx<DashedLines.Num(); DashIdx++)
{
const FDashedLine& Dash = DashedLines[DashIdx];
DrawDashedLine(PDI, Dash.Start, Dash.End, Dash.Color, Dash.DashSize, SDPG_World);
}
// Draw Arrows
const uint32 ArrowsNum = ArrowLines.Num();
PDI->AddReserveLines(SDPG_World, 5 * ArrowsNum, false, false);
for (const auto& CurrentArrow : ArrowLines)
{
DrawLineArrow(PDI, CurrentArrow.Start, CurrentArrow.End, CurrentArrow.Color, 8.0f);
}
// Draw Stars
for(int32 StarIdx=0; StarIdx<Stars.Num(); StarIdx++)
{
const FWireStar& Star = Stars[StarIdx];
DrawWireStar(PDI, Star.Position, Star.Size, Star.Color, SDPG_World);
}
// Draw Cylinders
for(const auto& Cylinder : Cylinders)
{
if (DrawType == SolidAndWireMeshes || DrawType == WireMesh)
{
DrawWireCylinder(PDI, Cylinder.Base, FVector(1, 0, 0), FVector(0, 1, 0), FVector(0, 0, 1), Cylinder.Color, Cylinder.Radius, Cylinder.HalfHeight, (DrawType == SolidAndWireMeshes) ? 9 : 16, SDPG_World, DrawType == SolidAndWireMeshes ? 2 : 0, 0, true);
}
if (DrawType == SolidAndWireMeshes || DrawType == SolidMesh)
{
GetCylinderMesh(Cylinder.Base, FVector(1, 0, 0), FVector(0, 1, 0), FVector(0, 0, 1), Cylinder.Radius, Cylinder.HalfHeight, 16, MaterialCache[0][Cylinder.Color.WithAlpha(DrawAlpha)], SDPG_World, ViewIndex, Collector);
}
}
// Draw Boxes
for(const auto& Box : Boxes)
{
if (DrawType == SolidAndWireMeshes || DrawType == WireMesh)
{
DrawWireBox(PDI, Box.Transform.ToMatrixWithScale(), Box.Box, Box.Color, SDPG_World, DrawType == SolidAndWireMeshes ? 2 : 0, 0, true);
}
if (DrawType == SolidAndWireMeshes || DrawType == SolidMesh)
{
GetBoxMesh(FTransform(Box.Box.GetCenter()).ToMatrixNoScale() * Box.Transform.ToMatrixWithScale(), Box.Box.GetExtent(), MaterialCache[0][Box.Color.WithAlpha(DrawAlpha)], SDPG_World, ViewIndex, Collector);
}
}
// Draw Boxes
TArray<FVector> Verts;
for (auto& CurrentCone : Cones)
{
if (DrawType == SolidAndWireMeshes || DrawType == WireMesh)
{
DrawWireCone(PDI, Verts, CurrentCone.ConeToWorld, 1, CurrentCone.Angle2, (DrawType == SolidAndWireMeshes) ? 9 : 16, CurrentCone.Color, SDPG_World, DrawType == SolidAndWireMeshes ? 2 : 0, 0, true);
}
if (DrawType == SolidAndWireMeshes || DrawType == SolidMesh)
{
GetConeMesh(CurrentCone.ConeToWorld, CurrentCone.Angle1, CurrentCone.Angle2, 16, MaterialCache[0][CurrentCone.Color.WithAlpha(DrawAlpha)], SDPG_World, ViewIndex, Collector);
}
}
for (auto It = Spheres.CreateConstIterator(); It; ++It)
{
if (PointInView(It->Location, View))
{
if (DrawType == SolidAndWireMeshes || DrawType == WireMesh)
{
DrawWireSphere(PDI, It->Location, It->Color.WithAlpha(255), It->Radius, 20, SDPG_World, DrawType == SolidAndWireMeshes ? 2 : 0, 0, true);
}
if (DrawType == SolidAndWireMeshes || DrawType == SolidMesh)
{
GetSphereMesh(It->Location, FVector(It->Radius), 20, 7, MaterialCache[0][It->Color.WithAlpha(DrawAlpha)], SDPG_World, false, ViewIndex, Collector);
}
}
}
for (auto It = Capsles.CreateConstIterator(); It; ++It)
{
if (PointInView(It->Location, View))
{
if (DrawType == SolidAndWireMeshes || DrawType == WireMesh)
{
const float HalfAxis = FMath::Max<float>(It->HalfHeight - It->Radius, 1.f);
const FVector BottomEnd = It->Location + It->Radius * It->Z;
const FVector TopEnd = BottomEnd + (2 * HalfAxis) * It->Z;
const float CylinderHalfHeight = (TopEnd - BottomEnd).Size() * 0.5;
const FVector CylinderLocation = BottomEnd + CylinderHalfHeight * It->Z;
DrawWireCapsule(PDI, CylinderLocation, It->X, It->Y, It->Z, It->Color, It->Radius, It->HalfHeight, (DrawType == SolidAndWireMeshes) ? 9 : 16, SDPG_World, DrawType == SolidAndWireMeshes ? 2 : 0, 0, true);
}
if (DrawType == SolidAndWireMeshes || DrawType == SolidMesh)
{
GetCapsuleMesh(It->Location, It->X, It->Y, It->Z, It->Color, It->Radius, It->HalfHeight, 16, MaterialCache[0][It->Color.WithAlpha(DrawAlpha)], SDPG_World, false, ViewIndex, Collector);
}
}
}
for (const auto& Mesh : Meshes)
{
FDynamicMeshBuilder MeshBuilder;
MeshBuilder.AddVertices(Mesh.Vertices);
MeshBuilder.AddTriangles(Mesh.Indices);
MeshBuilder.GetMesh(FMatrix::Identity, MaterialCache[Mesh.Color.A == 255 ? 1 : 0][Mesh.Color.WithAlpha(DrawAlpha)], SDPG_World, false, false, ViewIndex, Collector);
}
}
}
}