/// <inheritdoc/>
public void Generate(IServiceRegistry services, Model model)
{
if (model is null)
{
throw new ArgumentNullException(nameof(model));
}
var needsTempDevice = false;
var graphicsDevice = services?.GetSafeServiceAs <IGraphicsDeviceService>().GraphicsDevice;
if (graphicsDevice is null)
{
graphicsDevice = GraphicsDevice.New();
needsTempDevice = true;
}
var data = CreatePrimitiveMeshData();
if (data.Vertices.Length == 0)
{
throw new InvalidOperationException("Invalid GeometricPrimitive [{0}]. Expecting non-zero Vertices array.");
}
// Translate if necessary
if (LocalOffset != Vector3.Zero)
{
for (var index = 0; index < data.Vertices.Length; index++)
{
data.Vertices[index].Position += LocalOffset;
}
}
// Scale if necessary
if (Scale != Vector3.One)
{
var inverseMatrix = Matrix.Scaling(Scale);
inverseMatrix.Invert();
for (var index = 0; index < data.Vertices.Length; index++)
{
data.Vertices[index].Position *= Scale;
// TODO: Shouldn't be TransformNormal?
Vector3.TransformCoordinate(ref data.Vertices[index].Normal, ref inverseMatrix, out data.Vertices[index].Normal);
}
}
var boundingBox = BoundingBox.Empty;
for (int i = 0; i < data.Vertices.Length; i++)
{
BoundingBox.Merge(ref boundingBox, ref data.Vertices[i].Position, out boundingBox);
}
BoundingSphere boundingSphere;
unsafe
{
fixed(void *verticesPtr = data.Vertices)
BoundingSphere.FromPoints((IntPtr)verticesPtr, 0, data.Vertices.Length, VertexPositionNormalTexture.Size, out boundingSphere);
}
var originalLayout = data.Vertices[0].GetLayout();
// Generate Tangent/BiNormal vectors
var resultWithTangentBiNormal = VertexHelper.GenerateTangentBinormal(originalLayout, data.Vertices, data.Indices);
// Generate Multi texturing coords
var maxTexCoords = MathUtil.Clamp(NumberOfTextureCoordinates, 1, 10) - 1;
var result = VertexHelper.GenerateMultiTextureCoordinates(resultWithTangentBiNormal, vertexStride: 0, maxTexCoords);
var meshDraw = new MeshDraw();
var layout = result.Layout;
var vertexBuffer = result.VertexBuffer;
var indices = data.Indices;
if (indices.Length < 0xFFFF)
{
// 16-bit indices
var indicesShort = new ushort[indices.Length];
for (int i = 0; i < indicesShort.Length; i++)
{
indicesShort[i] = (ushort)indices[i];
}
var indexBuffer = Buffer.Index.New(graphicsDevice, indicesShort)
.RecreateWith(indicesShort);
meshDraw.IndexBuffer = new IndexBufferBinding(indexBuffer, is32Bit: false, indices.Length);
if (needsTempDevice)
{
var indexData = BufferData.New(BufferFlags.IndexBuffer, indicesShort);
meshDraw.IndexBuffer = new IndexBufferBinding(indexData.ToSerializableVersion(), is32Bit: false, indices.Length);
}
}
else
{
// 32-bit indices
var indexBuffer = Buffer.Index.New(graphicsDevice, indices)
.RecreateWith(indices);
meshDraw.IndexBuffer = new IndexBufferBinding(indexBuffer, is32Bit: true, indices.Length);
if (needsTempDevice)
{
var indexData = BufferData.New(BufferFlags.IndexBuffer, indices);
meshDraw.IndexBuffer = new IndexBufferBinding(indexData.ToSerializableVersion(), is32Bit: true, indices.Length);
}
}
var geometryBuffer = Buffer.New(graphicsDevice, vertexBuffer, BufferFlags.VertexBuffer)
.RecreateWith(vertexBuffer);
meshDraw.VertexBuffers = new[] { new VertexBufferBinding(geometryBuffer, layout, data.Vertices.Length) };
if (needsTempDevice)
{
var vertexData = BufferData.New(BufferFlags.VertexBuffer, vertexBuffer);
meshDraw.VertexBuffers = new[] { new VertexBufferBinding(vertexData.ToSerializableVersion(), layout, data.Vertices.Length) };
}
meshDraw.DrawCount = indices.Length;
meshDraw.PrimitiveType = PrimitiveType.TriangleList;
var mesh = new Mesh
{
Draw = meshDraw,
BoundingBox = boundingBox,
BoundingSphere = boundingSphere
};
model.BoundingBox = boundingBox;
model.BoundingSphere = boundingSphere;
model.Add(mesh);
if (MaterialInstance?.Material is not null)
{
model.Materials.Add(MaterialInstance);
}
if (needsTempDevice)
{
graphicsDevice.Dispose();
}
}
public void Generate(IServiceRegistry services, Model model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var needsTempDevice = false;
var graphicsDevice = services?.GetSafeServiceAs <IGraphicsDeviceService>().GraphicsDevice;
if (graphicsDevice == null)
{
graphicsDevice = GraphicsDevice.New();
needsTempDevice = true;
}
var data = CreatePrimitiveMeshData();
if (data.Vertices.Length == 0)
{
throw new InvalidOperationException("Invalid GeometricPrimitive [{0}]. Expecting non-zero Vertices array");
}
//Scale if necessary
if (Scale != Vector3.One)
{
var inverseMatrix = Matrix.Scaling(Scale);
inverseMatrix.Invert();
for (var index = 0; index < data.Vertices.Length; index++)
{
data.Vertices[index].Position *= Scale;
Vector3.TransformCoordinate(ref data.Vertices[index].Normal, ref inverseMatrix, out data.Vertices[index].Normal);
}
}
var boundingBox = BoundingBox.Empty;
for (int i = 0; i < data.Vertices.Length; i++)
{
BoundingBox.Merge(ref boundingBox, ref data.Vertices[i].Position, out boundingBox);
}
BoundingSphere boundingSphere;
unsafe
{
fixed(void *verticesPtr = data.Vertices)
BoundingSphere.FromPoints((IntPtr)verticesPtr, 0, data.Vertices.Length, VertexPositionNormalTexture.Size, out boundingSphere);
}
var originalLayout = data.Vertices[0].GetLayout();
// Generate Tangent/BiNormal vectors
var resultWithTangentBiNormal = VertexHelper.GenerateTangentBinormal(originalLayout, data.Vertices, data.Indices);
// Generate Multitexcoords
var result = VertexHelper.GenerateMultiTextureCoordinates(resultWithTangentBiNormal);
var meshDraw = new MeshDraw();
var layout = result.Layout;
var vertexBuffer = result.VertexBuffer;
var indices = data.Indices;
if (indices.Length < 0xFFFF)
{
var indicesShort = new ushort[indices.Length];
for (int i = 0; i < indicesShort.Length; i++)
{
indicesShort[i] = (ushort)indices[i];
}
meshDraw.IndexBuffer = new IndexBufferBinding(Buffer.Index.New(graphicsDevice, indicesShort).RecreateWith(indicesShort), false, indices.Length);
if (needsTempDevice)
{
var indexData = BufferData.New(BufferFlags.IndexBuffer, indicesShort);
meshDraw.IndexBuffer = new IndexBufferBinding(indexData.ToSerializableVersion(), false, indices.Length);
}
}
else
{
if (graphicsDevice.Features.CurrentProfile <= GraphicsProfile.Level_9_3)
{
throw new InvalidOperationException("Cannot generate more than 65535 indices on feature level HW <= 9.3");
}
meshDraw.IndexBuffer = new IndexBufferBinding(Buffer.Index.New(graphicsDevice, indices).RecreateWith(indices), true, indices.Length);
if (needsTempDevice)
{
var indexData = BufferData.New(BufferFlags.IndexBuffer, indices);
meshDraw.IndexBuffer = new IndexBufferBinding(indexData.ToSerializableVersion(), true, indices.Length);
}
}
meshDraw.VertexBuffers = new[] { new VertexBufferBinding(Buffer.New(graphicsDevice, vertexBuffer, BufferFlags.VertexBuffer).RecreateWith(vertexBuffer), layout, data.Vertices.Length) };
if (needsTempDevice)
{
var vertexData = BufferData.New(BufferFlags.VertexBuffer, vertexBuffer);
meshDraw.VertexBuffers = new[] { new VertexBufferBinding(vertexData.ToSerializableVersion(), layout, data.Vertices.Length) };
}
meshDraw.DrawCount = indices.Length;
meshDraw.PrimitiveType = PrimitiveType.TriangleList;
var mesh = new Mesh {
Draw = meshDraw, BoundingBox = boundingBox, BoundingSphere = boundingSphere
};
model.BoundingBox = boundingBox;
model.BoundingSphere = boundingSphere;
model.Add(mesh);
if (MaterialInstance?.Material != null)
{
model.Materials.Add(MaterialInstance);
}
if (needsTempDevice)
{
graphicsDevice.Dispose();
}
}