protected override DX11IndexedGeometry GetGeom(DX11RenderContext context, int slice)
{
IcoSphere sph = new IcoSphere();
sph.Radius = this.FSize[slice];
sph.SubDivisions = this.FSubDiv[slice];
return context.Primitives.IcoSphere(sph);
}
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 IcoSphere(IcoSphere settings)
{
float radius = settings.Radius;
int subdiv = settings.SubDivisions;
List <Pos3Norm3Tex2Vertex> vertices = new List <Pos3Norm3Tex2Vertex>();
Pos3Norm3Tex2Vertex v = new Pos3Norm3Tex2Vertex();
float t = (1.0f + (float)Math.Sqrt(5.0f)) / 2.0f;
//TODO : Add texcoord
v.TexCoords = new Vector2(0, 0);
//Isocahedron
v.Normals = Vector3.Normalize(new Vector3(-1, t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(1, t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(-1, -t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(1, -t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, -1, t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, 1, t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, -1, -t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, 1, -t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(t, 0, -1)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(t, 0, 1)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(-t, 0, -1)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(-t, 0, 1)); v.Position = v.Normals * radius; vertices.Add(v);
int[] inds = new int[] {
0, 11, 5,
0, 5, 1,
0, 1, 7,
0, 7, 10,
0, 10, 11,
1, 5, 9,
5, 11, 4,
11, 10, 2,
10, 7, 6,
7, 1, 8,
3, 9, 4,
3, 4, 2,
3, 2, 6,
3, 6, 8,
3, 8, 9,
4, 9, 5,
2, 4, 11,
6, 2, 10,
8, 6, 7,
9, 8, 1
};
List <int> indices = new List <int>(inds);
Pos3Norm3Tex2Vertex newvertex = new Pos3Norm3Tex2Vertex();
for (int iter = 0; iter < subdiv; iter++)
{
List <int> newindices = new List <int>();
for (int i = 0; i < indices.Count / 3; i++)
{
//Grab Indices
int i1 = indices[i * 3];
int i2 = indices[i * 3 + 1];
int i3 = indices[i * 3 + 2];
//Get Vertices
Pos3Norm3Tex2Vertex v1 = vertices[i1];
Pos3Norm3Tex2Vertex v2 = vertices[i2];
Pos3Norm3Tex2Vertex v3 = vertices[i3];
Vector3 e1 = (v1.Position + v2.Position) * 0.5f;
Vector3 e2 = (v2.Position + v3.Position) * 0.5f;
Vector3 e3 = (v3.Position + v1.Position) * 0.5f;
int ie1 = vertices.Count;
int ie2 = vertices.Count + 1;
int ie3 = vertices.Count + 2;
//Push 3 new vertices
newvertex.Normals = Vector3.Normalize(e1);
newvertex.Position = newvertex.Normals * radius;
vertices.Add(newvertex);
newvertex.Normals = Vector3.Normalize(e2);
newvertex.Position = newvertex.Normals * radius;
vertices.Add(newvertex);
newvertex.Normals = Vector3.Normalize(e3);
newvertex.Position = newvertex.Normals * radius;
vertices.Add(newvertex);
//Push 4 triangles
newindices.Add(ie1); newindices.Add(ie2); newindices.Add(ie3);
newindices.Add(i1); newindices.Add(ie1); newindices.Add(ie3);
newindices.Add(i2); newindices.Add(ie2); newindices.Add(ie1);
newindices.Add(i3); newindices.Add(ie3); newindices.Add(ie2);
}
//Swap
indices = newindices;
}
DX11IndexedGeometry geom = DX11IndexedGeometry.CreateFrom <Pos3Norm3Tex2Vertex>(context, vertices.ToArray(), indices.ToArray(), Pos3Norm3Tex2Vertex.Layout);
geom.HasBoundingBox = true;
geom.BoundingBox = new BoundingBox(new Vector3(-radius), new Vector3(radius));
geom.Tag = settings;
geom.PrimitiveType = settings.PrimitiveType;
return(geom);
}
public DX11IndexedGeometry IcoSphere(IcoSphere settings)
{
float radius = settings.Radius;
int subdiv = settings.SubDivisions;
List<Pos3Norm3Tex2Vertex> vertices = new List<Pos3Norm3Tex2Vertex>();
Pos3Norm3Tex2Vertex v = new Pos3Norm3Tex2Vertex();
float t = (1.0f + (float)Math.Sqrt(5.0f)) / 2.0f;
//TODO : Add texcoord
v.TexCoords = new Vector2(0, 0);
//Isocahedron
v.Normals = Vector3.Normalize(new Vector3(-1, t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(1, t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(-1, -t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(1, -t, 0)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, -1, t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, 1, t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, -1, -t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(0, 1, -t)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(t, 0, -1)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(t, 0, 1)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(-t, 0, -1)); v.Position = v.Normals * radius; vertices.Add(v);
v.Normals = Vector3.Normalize(new Vector3(-t, 0, 1)); v.Position = v.Normals * radius; vertices.Add(v);
int[] inds = new int[] {
0,11,5,
0,5,1,
0,1,7,
0,7,10,
0,10,11,
1,5,9,
5,11,4,
11,10,2,
10,7,6,
7,1,8,
3,9,4,
3,4,2,
3,2,6,
3,6,8,
3,8,9,
4,9,5,
2,4,11,
6,2,10,
8,6,7,
9,8,1 };
List<int> indices = new List<int>(inds);
Pos3Norm3Tex2Vertex newvertex = new Pos3Norm3Tex2Vertex();
for (int iter = 0; iter < subdiv; iter++)
{
List<int> newindices = new List<int>();
for (int i = 0; i < indices.Count / 3; i++)
{
//Grab Indices
int i1 = indices[i * 3];
int i2 = indices[i * 3 + 1];
int i3 = indices[i * 3 + 2];
//Get Vertices
Pos3Norm3Tex2Vertex v1 = vertices[i1];
Pos3Norm3Tex2Vertex v2 = vertices[i2];
Pos3Norm3Tex2Vertex v3 = vertices[i3];
Vector3 e1 = (v1.Position + v2.Position) * 0.5f;
Vector3 e2 = (v2.Position + v3.Position) * 0.5f;
Vector3 e3 = (v3.Position + v1.Position) * 0.5f;
int ie1 = vertices.Count;
int ie2 = vertices.Count + 1;
int ie3 = vertices.Count + 2;
//Push 3 new vertices
newvertex.Normals = Vector3.Normalize(e1);
newvertex.Position = newvertex.Normals * radius;
vertices.Add(newvertex);
newvertex.Normals = Vector3.Normalize(e2);
newvertex.Position = newvertex.Normals * radius;
vertices.Add(newvertex);
newvertex.Normals = Vector3.Normalize(e3);
newvertex.Position = newvertex.Normals * radius;
vertices.Add(newvertex);
//Push 4 triangles
newindices.Add(ie1); newindices.Add(ie2); newindices.Add(ie3);
newindices.Add(i1); newindices.Add(ie1); newindices.Add(ie3);
newindices.Add(i2); newindices.Add(ie2); newindices.Add(ie1);
newindices.Add(i3); newindices.Add(ie3); newindices.Add(ie2);
}
//Swap
indices = newindices;
}
DX11IndexedGeometry geom = DX11IndexedGeometry.CreateFrom<Pos3Norm3Tex2Vertex>(context, vertices.ToArray(), indices.ToArray(), Pos3Norm3Tex2Vertex.Layout);
geom.HasBoundingBox = true;
geom.BoundingBox = new BoundingBox(new Vector3(-radius), new Vector3(radius));
geom.Tag = settings;
geom.PrimitiveType = settings.PrimitiveType;
return geom;
}
