Kav/Data/InstanceData.cs

61 lines
1.4 KiB
C#

using System.Collections.Generic;
using Microsoft.Xna.Framework.Graphics;
namespace Kav
{
public class InstanceData<T> where T : struct, IVertexType
{
public T[] InstanceDataArray { get; }
public DynamicVertexBuffer VertexBuffer { get; }
public int InstanceCount { get; private set; }
public InstanceData(GraphicsDevice graphicsDevice, int size)
{
InstanceDataArray = new T[size];
VertexBuffer = new DynamicVertexBuffer(
graphicsDevice,
typeof(T),
size,
BufferUsage.WriteOnly
);
InstanceCount = 0;
}
public void AddAndSetData(IEnumerable<T> data)
{
InstanceCount = 0;
foreach (var datum in data)
{
AddData(datum);
}
if (InstanceCount == 0) { throw new System.Exception(); }
SetData();
}
public void AddData(T datum)
{
InstanceDataArray[InstanceCount] = datum;
InstanceCount += 1;
}
public void SetData()
{
VertexBuffer.SetData(
InstanceDataArray,
0,
InstanceCount,
SetDataOptions.NoOverwrite
);
}
public void Clear()
{
InstanceCount = 0;
}
}
}