public override void Remove(ModelDisplayObject displayObject)
{
ModelDisplayObjectBatch batch = displayObject.BatchInformation.Batch;
batch.Remove(displayObject, this);
//If it's an empty batch, just throw it away.
if (batch.DisplayObjects.Count == 0)
batches.Remove(batch);
}
public override void Remove(ModelDisplayObject displayObject)
{
ModelDisplayObjectBatch batch = displayObject.BatchInformation.Batch;
batch.Remove(displayObject, this);
//If it's an empty batch, just throw it away.
if (batch.DisplayObjects.Count == 0)
{
batches.Remove(batch);
}
}
/// <summary>
/// Attempts to add an object to the ModelDrawer.
/// </summary>
/// <param name="objectToDisplay">Object to be added to the model drawer.</param>
/// <returns>ModelDisplayObject created for the object. Null if it couldn't be added.</returns>
public ModelDisplayObject Add(object objectToDisplay)
{
ModelDisplayObject displayObject = GetDisplayObject(objectToDisplay);
if (displayObject != null)
{
Add(displayObject);
displayObjects.Add(objectToDisplay, displayObject);
return(displayObject);
}
return(null); //Couldn't add it.
}
/// <summary>
/// Adds a display object to the batch.
/// </summary>
/// <param name="displayObject">Display object to add.</param>
/// <param name="drawer">Drawer of the batch.</param>
public bool Add(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//In theory, don't need to test for dupliate entries since batch.Add
//should only be called through a InstancedModelDrawer's add (which checks beforehand).
if (displayObjects.Count == MaximumObjectsPerBatch ||
((indices.Length / 3 + displayObject.GetTriangleCountEstimate()) > MaximumPrimitiveCountPerBatch &&
displayObjects.Count > 0))
{
return(false);
}
displayObjects.Add(displayObject);
int instanceIndex = displayObjects.Count - 1;
var textureIndex = displayObject.TextureIndex;
displayObject.GetVertexData(vertexList, indexList, this, (ushort)vertices.Length, indices.Length, instanceIndex);
//Add the data to the batch.
var newVertices = new VertexPositionNormalTexture[vertices.Length + vertexList.Count];
vertices.CopyTo(newVertices, 0);
vertexList.CopyTo(newVertices, vertices.Length);
vertices = newVertices;
var newIndices = new ushort[indices.Length + indexList.Count];
indices.CopyTo(newIndices, 0);
indexList.CopyTo(newIndices, indices.Length);
indices = newIndices;
var newInstancingVertices = new InstancedVertex[instancedVertices.Length + vertexList.Count];
instancedVertices.CopyTo(newInstancingVertices, 0);
for (int i = instancedVertices.Length; i < newInstancingVertices.Length; i++)
{
newInstancingVertices[i] = new InstancedVertex {
InstanceIndex = instanceIndex, TextureIndex = textureIndex
}
}
;
instancedVertices = newInstancingVertices;
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionNormalTexture.VertexDeclaration, vertices.Length, BufferUsage.WriteOnly);
vertexBuffer.SetData(vertices);
instancingBuffer = new VertexBuffer(graphicsDevice, InstancedVertex.VertexDeclaration, instancedVertices.Length, BufferUsage.WriteOnly);
instancingBuffer.SetData(instancedVertices);
bindings = new VertexBufferBinding[] { vertexBuffer, instancingBuffer };
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
vertexList.Clear();
indexList.Clear();
return(true);
}
public override void Add(ModelDisplayObject displayObject)
{
foreach (ModelDisplayObjectBatch batch in batches)
{
if (batch.Add(displayObject, this))
return;
}
//If we made it here, that means there was no batch that could handle the display object.
//This could be because the batches were full, or it could be that this
//display object is just really large (like a terrain) and violated the
//primitive count limit.
//So throw the object in a new batch.
//This will also allow a display object that is too large (like a 512x512 terrain) to be added to a batch,
//so long as it is alone.
var batchToAdd = new ModelDisplayObjectBatch(Game.GraphicsDevice);
batches.Add(batchToAdd);
batchToAdd.Add(displayObject, this);
}
public override void Add(ModelDisplayObject displayObject)
{
foreach (ModelDisplayObjectBatch batch in batches)
{
if (batch.Add(displayObject, this))
{
return;
}
}
//If we made it here, that means there was no batch that could handle the display object.
//This could be because the batches were full, or it could be that this
//display object is just really large (like a terrain) and violated the
//primitive count limit.
//So throw the object in a new batch.
//This will also allow a display object that is too large (like a 512x512 terrain) to be added to a batch,
//so long as it is alone.
var batchToAdd = new ModelDisplayObjectBatch(Game.GraphicsDevice);
batches.Add(batchToAdd);
batchToAdd.Add(displayObject, this);
}
/// <summary> /// Removes a display object from the drawer. Only use this if display object was added directly. /// </summary> /// <param name="displayObject">Object to remove.</param> public abstract void Remove(ModelDisplayObject displayObject);
/// <summary> /// Adds a display object directly to the drawer without being linked to a source. /// </summary> /// <param name="displayObject">Display object to add.</param> public abstract void Add(ModelDisplayObject displayObject);
/// <summary>
/// Removes a display object from the batch.
/// </summary>
/// <param name="displayObject">Display object to remove.</param>
/// <param name="drawer">Instanced model drawer doing the removal.</param>
public void Remove(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//Modify vertex buffer
var newVertices = new VertexPositionNormalTexture[vertices.Length - displayObject.BatchInformation.VertexCount];
//Copy the first part back (before the display object)
Array.Copy(vertices, 0, newVertices, 0, displayObject.BatchInformation.BaseVertexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(vertices, displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount,
newVertices, displayObject.BatchInformation.BaseVertexBufferIndex,
vertices.Length - (displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount));
vertices = newVertices;
//Modify index buffer
var newIndices = new ushort[indices.Length - displayObject.BatchInformation.IndexCount];
//Copy the first part back (before the display object)
Array.Copy(indices, 0, newIndices, 0, displayObject.BatchInformation.BaseIndexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(indices, displayObject.BatchInformation.BaseIndexBufferIndex + displayObject.BatchInformation.IndexCount,
newIndices, displayObject.BatchInformation.BaseIndexBufferIndex,
indices.Length - (displayObject.BatchInformation.BaseIndexBufferIndex + displayObject.BatchInformation.IndexCount));
indices = newIndices;
//The index buffer's data is now wrong though. We deleted a bunch of vertices.
//So go through the index buffer starting at the point of deletion and decrease the values appropriately.
for (int i = displayObject.BatchInformation.BaseIndexBufferIndex; i < indices.Length; i++)
{
indices[i] -= (ushort)displayObject.BatchInformation.VertexCount;
}
//Modify instancing indices
var newInstancedVertices = new InstancedVertex[instancedVertices.Length - displayObject.BatchInformation.VertexCount];
//Copy the first part back (before the display object)
Array.Copy(instancedVertices, 0, newInstancedVertices, 0, displayObject.BatchInformation.BaseVertexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(instancedVertices, displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount,
newInstancedVertices, displayObject.BatchInformation.BaseVertexBufferIndex,
instancedVertices.Length - (displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount));
instancedVertices = newInstancedVertices;
//Like with the index buffer, go through the buffer starting at the point of deletion and decrease the values appropriately.
for (int i = displayObject.BatchInformation.BaseVertexBufferIndex; i < instancedVertices.Length; i++)
{
instancedVertices[i].InstanceIndex--;
}
displayObjects.Remove(displayObject);
//Move the subsequent display objects list indices and base vertices/indices.
for (int i = displayObject.BatchInformation.BatchListIndex; i < DisplayObjects.Count; i++)
{
DisplayObjects[i].BatchInformation.BatchListIndex--;
DisplayObjects[i].BatchInformation.BaseVertexBufferIndex -= displayObject.BatchInformation.VertexCount;
DisplayObjects[i].BatchInformation.BaseIndexBufferIndex -= displayObject.BatchInformation.IndexCount;
}
// Tell ModelDisplayObject that it got removed (batch, indices).
displayObject.ClearBatchReferences();
//If there weren't any vertices, this batch is about to die.
if (displayObjects.Count > 0)
{
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionNormalTexture.VertexDeclaration, vertices.Length, BufferUsage.WriteOnly);
vertexBuffer.SetData(vertices);
instancingBuffer = new VertexBuffer(graphicsDevice, InstancedVertex.VertexDeclaration, instancedVertices.Length, BufferUsage.WriteOnly);
instancingBuffer.SetData(instancedVertices);
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
bindings = new VertexBufferBinding[] { vertexBuffer, instancingBuffer };
}
}
/// <summary> /// Removes a display object from the drawer. Only use this if display object was added directly. /// </summary> /// <param name="displayObject">Object to remove.</param> public abstract void Remove(ModelDisplayObject displayObject);
/// <summary> /// Adds a display object directly to the drawer without being linked to a source. /// </summary> /// <param name="displayObject">Display object to add.</param> public abstract void Add(ModelDisplayObject displayObject);
