public DX11IndexedGeometry Octahedron(Octahedron settings)
{
OctahedronBuilder builder = new OctahedronBuilder();
ListGeometryAppender appender = new ListGeometryAppender();
PrimitiveInfo info = builder.GetPrimitiveInfo(settings);
builder.Construct(settings, appender.AppendVertex, appender.AppendIndex);
return(FromAppender(settings, appender, info));
}
public DX11IndexedGeometry Cylinder(Cylinder settings)
{
CylinderBuilder builder = new CylinderBuilder();
ListGeometryAppender appender = new ListGeometryAppender();
PrimitiveInfo info = builder.GetPrimitiveInfo(settings);
builder.Construct(settings, appender.AppendVertex, appender.AppendIndex);
return(FromAppender(settings, appender, info));
}
public DX11IndexedGeometry QuadNormals(Quad settings)
{
QuadBuilder builder = new QuadBuilder();
ListGeometryAppender appender = new ListGeometryAppender();
PrimitiveInfo info = builder.GetPrimitiveInfo(settings);
builder.Construct(settings, appender.AppendVertex, appender.AppendIndex);
return(FromAppender(settings, appender, info));
}
public DX11IndexedGeometry IcoSphere(IcoSphere settings)
{
float radius = settings.Radius;
IcoSphereBuilder builder = new IcoSphereBuilder();
PrimitiveInfo info = builder.GetPrimitiveInfo(settings);
ListGeometryAppender appender = new ListGeometryAppender();
builder.Construct(settings, appender.AppendVertex, appender.AppendIndex);
DX11IndexedGeometry geom = FromAppender(settings, appender, info);
geom.BoundingBox = new BoundingBox(new Vector3(-radius), new Vector3(radius));
return(geom);
}
public DX11IndexedGeometry IcoGrid(IcoGrid settings)
{
IcoGridBuilder builder = new IcoGridBuilder();
PrimitiveInfo info = builder.GetPrimitiveInfo(settings);
ListGeometryAppender appender = new ListGeometryAppender();
builder.Construct(settings, appender.AppendVertex, appender.AppendIndex);
float invmx = 1.0f / builder.MaxX;
float invmy = 1.0f / builder.MaxY;
appender.TransformVertices((v) =>
{
v.Position.X *= invmx;
v.Position.X -= 0.5f;
v.Position.Y *= invmy;
v.Position.Y -= 0.5f;
return(v);
});
return(FromAppender(settings, appender, info));
}
public DX11IndexedGeometry Segment(Segment settings)
{
SegmentBuilder builder = new SegmentBuilder();
ListGeometryAppender appender = new ListGeometryAppender();
PrimitiveInfo info = builder.GetPrimitiveInfo(settings);
Vector3 max = new Vector3(float.MinValue, float.MinValue, float.MinValue);
Vector3 min = new Vector3(float.MaxValue, float.MaxValue, float.MaxValue);
builder.Construct(settings, (v, n, u) =>
{ appender.AppendVertex(v, n, u); min = Vector3.Min(min, v); max = Vector3.Max(max, v); }, appender.AppendIndex);
DX11IndexedGeometry geom = new DX11IndexedGeometry(device);
geom.Tag = settings;
geom.PrimitiveType = settings.PrimitiveType;
geom.VertexBuffer = DX11VertexBuffer.CreateImmutable(device, appender.Vertices.ToArray());
geom.IndexBuffer = DX11IndexBuffer.CreateImmutable(device, appender.Indices.ToArray());
geom.InputLayout = Pos4Norm3Tex2Vertex.Layout;
geom.Topology = PrimitiveTopology.TriangleList;
geom.HasBoundingBox = true;
geom.BoundingBox = new BoundingBox(min, max);
return(geom);
}
private DX11IndexedGeometry FromAppender(AbstractPrimitiveDescriptor descriptor, ListGeometryAppender appender, PrimitiveInfo info)
{
DX11IndexedGeometry geom = new DX11IndexedGeometry(device);
geom.Tag = descriptor;
geom.PrimitiveType = descriptor.PrimitiveType;
geom.VertexBuffer = DX11VertexBuffer.CreateImmutable(device, appender.Vertices.ToArray());
geom.IndexBuffer = DX11IndexBuffer.CreateImmutable(device, appender.Indices.ToArray());
geom.InputLayout = Pos4Norm3Tex2Vertex.Layout;
geom.Topology = PrimitiveTopology.TriangleList;
geom.HasBoundingBox = info.IsBoundingBoxKnown;
geom.BoundingBox = info.BoundingBox;
return(geom);
}