<ItemGroup>
    <Content Include="content/**/*" Pack="true">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>

  <ItemGroup>
    <Content Include="content/**/*" Pack="true">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>

public class Frustum {
    
    // View frustum planes
    private Plane[] _frustumPlanes;

    public Frustum(Matrix4x4 viewProjectionMatrix) {
        _frustumPlanes = ExtractPlanes(viewProjectionMatrix);
    }

    public bool IsSphereInFrustum(Vector3 center, float radius) {
        foreach (var plane in _frustumPlanes) {
            float distance = Vector3.Dot(plane.Normal, center) + plane.D;

            if (distance < -radius) {
                // The sphere is entirely behind this plane, it is outside the frustum
                return false;
            }
        }

        // The sphere is not entirely behind any plane, it is partially or fully inside the frustum
        return true;
    }

    private Plane[] ExtractPlanes(Matrix4x4 viewProjectionMatrix) {
        
        // Extract view frustum planes from the view-projection matrix
        Plane[] planes = new Plane[6];

        // Left plane
        planes[0] = new Plane(
            viewProjectionMatrix.M14 + viewProjectionMatrix.M11,
            viewProjectionMatrix.M24 + viewProjectionMatrix.M21,
            viewProjectionMatrix.M34 + viewProjectionMatrix.M31,
            viewProjectionMatrix.M44 + viewProjectionMatrix.M41
        );

        // Right plane
        planes[1] = new Plane(
            viewProjectionMatrix.M14 - viewProjectionMatrix.M11,
            viewProjectionMatrix.M24 - viewProjectionMatrix.M21,
            viewProjectionMatrix.M34 - viewProjectionMatrix.M31,
            viewProjectionMatrix.M44 - viewProjectionMatrix.M41
        );

        // Bottom plane
        planes[2] = new Plane(
            viewProjectionMatrix.M14 + viewProjectionMatrix.M12,
            viewProjectionMatrix.M24 + viewProjectionMatrix.M22,
            viewProjectionMatrix.M34 + viewProjectionMatrix.M32,
            viewProjectionMatrix.M44 + viewProjectionMatrix.M42
        );

        // Top plane
        planes[3] = new Plane(
            viewProjectionMatrix.M14 - viewProjectionMatrix.M12,
            viewProjectionMatrix.M24 - viewProjectionMatrix.M22,
            viewProjectionMatrix.M34 - viewProjectionMatrix.M32,
            viewProjectionMatrix.M44 - viewProjectionMatrix.M42
        );

        // Near plane
        planes[4] = new Plane(
            viewProjectionMatrix.M13,
            viewProjectionMatrix.M23,
            viewProjectionMatrix.M33,
            viewProjectionMatrix.M43
        );

        // Far plane
        planes[5] = new Plane(
            viewProjectionMatrix.M14 - viewProjectionMatrix.M13,
            viewProjectionMatrix.M24 - viewProjectionMatrix.M23,
            viewProjectionMatrix.M34 - viewProjectionMatrix.M33,
            viewProjectionMatrix.M44 - viewProjectionMatrix.M43
        );

        // Normalize the planes
        for (int i = 0; i < 6; i++) {
            planes[i] = Plane.Normalize(planes[i]);
        }
        
        return planes;
    }
}

public class Frustum {
    
    // View frustum planes
    private Plane[] _frustumPlanes;

    public Frustum(Matrix4x4 viewProjectionMatrix) {
        _frustumPlanes = ExtractPlanes(viewProjectionMatrix);
    }

    public bool IsSphereInFrustum(Vector3 center, float radius) {
        foreach (var plane in _frustumPlanes) {
            float distance = Vector3.Dot(plane.Normal, center) + plane.D;

            if (distance < -radius) {
                // The sphere is entirely behind this plane, it is outside the frustum
                return false;
            }
        }

        // The sphere is not entirely behind any plane, it is partially or fully inside the frustum
        return true;
    }

    private Plane[] ExtractPlanes(Matrix4x4 viewProjectionMatrix) {
        
        // Extract view frustum planes from the view-projection matrix
        Plane[] planes = new Plane[6];

        // Left plane
        planes[0] = new Plane(
            viewProjectionMatrix.M14 + viewProjectionMatrix.M11,
            viewProjectionMatrix.M24 + viewProjectionMatrix.M21,
            viewProjectionMatrix.M34 + viewProjectionMatrix.M31,
            viewProjectionMatrix.M44 + viewProjectionMatrix.M41
        );

        // Right plane
        planes[1] = new Plane(
            viewProjectionMatrix.M14 - viewProjectionMatrix.M11,
            viewProjectionMatrix.M24 - viewProjectionMatrix.M21,
            viewProjectionMatrix.M34 - viewProjectionMatrix.M31,
            viewProjectionMatrix.M44 - viewProjectionMatrix.M41
        );

        // Bottom plane
        planes[2] = new Plane(
            viewProjectionMatrix.M14 + viewProjectionMatrix.M12,
            viewProjectionMatrix.M24 + viewProjectionMatrix.M22,
            viewProjectionMatrix.M34 + viewProjectionMatrix.M32,
            viewProjectionMatrix.M44 + viewProjectionMatrix.M42
        );

        // Top plane
        planes[3] = new Plane(
            viewProjectionMatrix.M14 - viewProjectionMatrix.M12,
            viewProjectionMatrix.M24 - viewProjectionMatrix.M22,
            viewProjectionMatrix.M34 - viewProjectionMatrix.M32,
            viewProjectionMatrix.M44 - viewProjectionMatrix.M42
        );

        // Near plane
        planes[4] = new Plane(
            viewProjectionMatrix.M13,
            viewProjectionMatrix.M23,
            viewProjectionMatrix.M33,
            viewProjectionMatrix.M43
        );

        // Far plane
        planes[5] = new Plane(
            viewProjectionMatrix.M14 - viewProjectionMatrix.M13,
            viewProjectionMatrix.M24 - viewProjectionMatrix.M23,
            viewProjectionMatrix.M34 - viewProjectionMatrix.M33,
            viewProjectionMatrix.M44 - viewProjectionMatrix.M43
        );

        // Normalize the planes
        for (int i = 0; i < 6; i++) {
            planes[i] = Plane.Normalize(planes[i]);
        }
        
        return planes;
    }
}

    private static void SetupConsoleOutput() {
        if (LogPath != null) {
            
            StreamWriter fileWriter = new StreamWriter(LogPath, true);
            fileWriter.AutoFlush = true;
            SyncTextWriter syncWriter = new SyncTextWriter(Console.Out, fileWriter);
            
            Console.SetOut(syncWriter);
            Console.SetError(syncWriter);
        }
    }

    private static void SetupConsoleOutput() {
        if (LogPath != null) {
            
            StreamWriter fileWriter = new StreamWriter(LogPath, true);
            fileWriter.AutoFlush = true;
            SyncTextWriter syncWriter = new SyncTextWriter(Console.Out, fileWriter);
            
            Console.SetOut(syncWriter);
            Console.SetError(syncWriter);
        }
    }

public class SyncTextWriter : TextWriter {
    
    private readonly TextWriter _firstWriter;
    private readonly TextWriter _secondWriter;
    
    public override Encoding Encoding => Encoding.UTF8;

    public SyncTextWriter(TextWriter firstWriter, TextWriter secondWriter) {
        this._firstWriter = firstWriter;
        this._secondWriter = secondWriter;
    }

    public override void Write(char value) {
        this._firstWriter.Write(value);
        this._secondWriter.Write(value);
    }

    public override void WriteLine(string? value) {
        this._firstWriter.WriteLine(value);
        this._secondWriter.WriteLine(value);
    }

    public override void Flush() {
        this._firstWriter.Flush();
        this._secondWriter.Flush();
    }

    public override void Close() {
        this._firstWriter.Close();
        this._secondWriter.Close();
    }
}

public class SyncTextWriter : TextWriter {
    
    private readonly TextWriter _firstWriter;
    private readonly TextWriter _secondWriter;
    
    public override Encoding Encoding => Encoding.UTF8;

    public SyncTextWriter(TextWriter firstWriter, TextWriter secondWriter) {
        this._firstWriter = firstWriter;
        this._secondWriter = secondWriter;
    }

    public override void Write(char value) {
        this._firstWriter.Write(value);
        this._secondWriter.Write(value);
    }

    public override void WriteLine(string? value) {
        this._firstWriter.WriteLine(value);
        this._secondWriter.WriteLine(value);
    }

    public override void Flush() {
        this._firstWriter.Flush();
        this._secondWriter.Flush();
    }

    public override void Close() {
        this._firstWriter.Close();
        this._secondWriter.Close();
    }
}

  <Target Name="Headless">
    <HeadlessTask SourceFile="*.cs" />
  </Target>

  <Target Name="Headless">
    <HeadlessTask SourceFile="*.cs" />
  </Target>

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net5.0</TargetFramework>

    <!-- Define a default value for EnableMyFeature, can be overridden by referencing project -->
    <EnableMyFeature>false</EnableMyFeature>
  </PropertyGroup>

  <PropertyGroup Condition="'$(EnableMyFeature)' == 'true'">
    <DefineConstants>$(DefineConstants);MY_CONSTANT</DefineConstants>
  </PropertyGroup>

  <!-- ... -->
</Project>

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net5.0</TargetFramework>

    <!-- Define a default value for EnableMyFeature, can be overridden by referencing project -->
    <EnableMyFeature>false</EnableMyFeature>
  </PropertyGroup>

  <PropertyGroup Condition="'$(EnableMyFeature)' == 'true'">
    <DefineConstants>$(DefineConstants);MY_CONSTANT</DefineConstants>
  </PropertyGroup>

  <!-- ... -->
</Project>

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net5.0</TargetFramework>

    <!-- Override EnableMyFeature here -->
    <EnableMyFeature>true</EnableMyFeature>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="path/to/LibraryProject.csproj">
      <AdditionalProperties>EnableMyFeature=$(EnableMyFeature)</AdditionalProperties>
    </ProjectReference>
  </ItemGroup>

  <!-- ... -->
</Project>

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net5.0</TargetFramework>

    <!-- Override EnableMyFeature here -->
    <EnableMyFeature>true</EnableMyFeature>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="path/to/LibraryProject.csproj">
      <AdditionalProperties>EnableMyFeature=$(EnableMyFeature)</AdditionalProperties>
    </ProjectReference>
  </ItemGroup>

  <!-- ... -->
</Project>

    <PackageReference Include="Microsoft.Build" Version="17.7.2" />

    <PackageReference Include="Microsoft.Build" Version="17.7.2" />