使用C++编写一个可以在Unreal Engine中使用的类它具有以下功能：1、有两个浮点数输入接口分别是坐标x和坐标y可以根据输入的值定义一个二维区域2、根据定义的二维区域生成与整数坐标值对应的点3、为生成的点添加随机的高度值范围是0~2554、根据调整后的点生成mesh

#include "MyClass.h" #include "RuntimeMeshComponent.h"

// Sets default values AMyClass::AMyClass() { // Set this actor to call Tick() every frame. You can turn this off to improve performance if you don't need it. PrimaryActorTick.bCanEverTick = false;

// Create the Runtime Mesh Component
MeshComponent = CreateDefaultSubobject<URuntimeMeshComponent>(TEXT("RuntimeMesh"));

}

// Called when the game starts or when spawned void AMyClass::BeginPlay() { Super::BeginPlay();

// Generate the mesh
GenerateMesh();

}

// Generate the mesh void AMyClass::GenerateMesh() { // Define the 2D region based on X and Y inputs FVector2D RegionSize = FVector2D(XInput, YInput);

// Calculate the number of vertices needed based on the region size
int32 NumVertices = RegionSize.X * RegionSize.Y;

// Create an array to hold the vertices
TArray<FVector> Vertices;
Vertices.SetNum(NumVertices);

// Loop through each vertex and calculate its position
for (int32 Y = 0; Y < RegionSize.Y; Y++)
{
    for (int32 X = 0; X < RegionSize.X; X++)
    {
        // Calculate the position of the vertex
        FVector VertexPosition = FVector(X, Y, 0);

        // Add a random height value to the vertex
        VertexPosition.Z = FMath::RandRange(0, 255);

        // Add the vertex to the array
        Vertices[Y * RegionSize.X + X] = VertexPosition;
    }
}

// Create an array to hold the triangles
TArray<int32> Triangles;
Triangles.SetNum((RegionSize.X - 1) * (RegionSize.Y - 1) * 6);

// Loop through each quad and create two triangles
for (int32 Y = 0; Y < RegionSize.Y - 1; Y++)
{
    for (int32 X = 0; X < RegionSize.X - 1; X++)
    {
        // Calculate the indices of the four vertices that make up the quad
        int32 TopLeftIndex = Y * RegionSize.X + X;
        int32 TopRightIndex = Y * RegionSize.X + X + 1;
        int32 BottomLeftIndex = (Y + 1) * RegionSize.X + X;
        int32 BottomRightIndex = (Y + 1) * RegionSize.X + X + 1;

        // Add the two triangles that make up the quad
        Triangles.Add(TopLeftIndex);
        Triangles.Add(BottomLeftIndex);
        Triangles.Add(TopRightIndex);
        Triangles.Add(TopRightIndex);
        Triangles.Add(BottomLeftIndex);
        Triangles.Add(BottomRightIndex);
    }
}

// Create the mesh section
MeshComponent->CreateMeshSection(0, Vertices, Triangles, TArray<FVector>(), TArray<FVector2D>(), TArray<FColor>(), TArray<FProcMeshTangent>(), true);

}