RuntimeMeshShapeGenerator.h

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// Copyright 2016-2018 Chris Conway (Koderz). All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "RuntimeMeshGenericVertex.h"
#include "RuntimeMeshBlueprint.h"
#include "RuntimeMeshBuilder.h"
#include "RuntimeMeshShapeGenerator.generated.h"

typedef TFunction<void(const FVector& Position, const FVector& Normal, const FRuntimeMeshTangent& Tangent, const FVector2D& UV0)> FVerticesBuilderFunction;
typedef TFunction<void(int32 Index)> FTrianglesBuilderFunction;

UCLASS()
class RUNTIMEMESHCOMPONENT_API URuntimeMeshShapeGenerator : public UBlueprintFunctionLibrary
{
        GENERATED_BODY()

public:

        UFUNCTION(BlueprintCallable, Category = "Components|RuntimeMesh")
        static void ConvertQuadToTriangles(UPARAM(ref) TArray<int32>& Triangles, int32 Vert0, int32 Vert1, int32 Vert2, int32 Vert3);


        UFUNCTION(BlueprintCallable, Category = "Components|RuntimeMesh")
        static void CreateBoxMesh(FVector BoxRadius, TArray<FVector>& Vertices, TArray<int32>& Triangles, TArray<FVector>& Normals, TArray<FVector2D>& UVs, TArray<FRuntimeMeshTangent>& Tangents);

        UFUNCTION(BlueprintCallable, Category = "Components|RuntimeMesh")
        static void CreateBoxMeshPacked(FVector BoxRadius, TArray<FRuntimeMeshBlueprintVertexSimple>& Vertices, TArray<int32>& Triangles);

        static void CreateBoxMesh(FVector BoxRadius, TArray<FRuntimeMeshVertexSimple>& Vertices, TArray<int32>& Triangles);

        static void CreateBoxMesh(FVector BoxRadius, const TSharedPtr<FRuntimeMeshAccessor>& MeshBuilder);

        static void CreateBoxMesh(FVector BoxRadius, FRuntimeMeshAccessor& MeshBuilder);

        UFUNCTION(BlueprintCallable, Category = "Components|RuntimeMesh")
        static void CreateGridMeshTriangles(int32 NumX, int32 NumY, bool bWinding, TArray<int32>& Triangles);

        UFUNCTION(BlueprintCallable, Category = "Components|RuntimeMesh")
        static void CreateGridMesh(float Width, float Height, int32 NumSubdivisionsX, int32 NumSubdivisionsY, TArray<FVector>& Vertices, TArray<int32>& Triangles, TArray<FVector>& Normals, TArray<FVector2D>& UVs, TArray<FRuntimeMeshTangent>& Tangents);

        UFUNCTION(BlueprintCallable, Category = "Components|RuntimeMesh")
        static void CreateGridMeshPacked(float Width, float Height, int32 NumSubdivisionsX, int32 NumSubdivisionsY, TArray<FRuntimeMeshBlueprintVertexSimple>& Vertices, TArray<int32>& Triangles);

        static void CreateGridMesh(float Width, float Height, int32 NumSubdivisionsX, int32 NumSubdivisionsY, TArray<FRuntimeMeshVertexSimple>& Vertices, TArray<int32>& Triangles);

        static void CreateGridMesh(float Width, float Height, int32 NumSubdivisionsX, int32 NumSubdivisionsY, const TSharedPtr<FRuntimeMeshAccessor>& MeshBuilder);



public:

        static void ConvertQuadToTriangles(TFunction<void(int32 Index)> TrianglesBuilder, int32 Vert0, int32 Vert1, int32 Vert2, int32 Vert3);

        static void CreateBoxMesh(FVector BoxRadius, FVerticesBuilderFunction VerticesBuilder, FTrianglesBuilderFunction TrianglesBuilder);

        static void CreateGridMeshTriangles(int32 NumX, int32 NumY, bool bWinding, FTrianglesBuilderFunction TrianglesBuilder);

        static void CreateGridMesh(float Width, float Height, int32 NumSubdivisionsX, int32 NumSubdivisionsY, FVerticesBuilderFunction VerticesBuilder, FTrianglesBuilderFunction TrianglesBuilder);

};