protected override DX11IndexedGeometry GetGeom(DX11RenderContext context, int slice)
{
Torus t = new Torus(this.FResX[slice], this.FResY[slice], this.FSize[slice], this.FThick[slice],
this.FPY[slice], this.FPX[slice], this.FPR[slice], this.FCY[slice]);
return context.Primitives.Torus(t);
}
public DX11IndexedGeometry Torus(Torus settings)
{
int resX = settings.ResolutionX;
int resY = settings.ResolutionY;
float radius = settings.Radius;
float thick = settings.Thickness;
float phasey = settings.PhaseY;
float phasex = settings.PhaseX;
float rot = settings.Rotation;
float cy = settings.CY;
List <Pos4Norm3Tex2Vertex> vertices = new List <Pos4Norm3Tex2Vertex>();
List <int> indices = new List <int>();
float pi = (float)Math.PI;
float pidiv2 = pi * 0.5f;
float twopi = pi * 2.0f;
int stride = resY + 1;
for (int i = 0; i <= resY; i++)
{
float u = (float)i / (float)resY;
//u *= cy;
float outerAngle = (float)i * twopi / (float)resY - pidiv2;
Matrix transform = Matrix.Translation(radius, 0, 0) * Matrix.RotationY(outerAngle * rot);
for (int j = 0; j <= resX; j++)
{
float fj = (float)j * cy;
float v = 1 - (float)j / resX;
float innerAngle = fj * twopi / (float)resX + pi;
float dy = (float)Math.Sin(innerAngle) * phasey;
float dx = (float)Math.Cos(innerAngle) * phasex;
Pos4Norm3Tex2Vertex vertex = new Pos4Norm3Tex2Vertex();
Vector3 normal = new Vector3(dx, dy, 0);
Vector3 position = normal * thick / 2;
vertex.TexCoords = new Vector2(u, v);
vertex.Normals = Vector3.TransformNormal(normal, transform);
position = Vector3.TransformCoordinate(position, transform);
vertex.Position = new Vector4(position.X, position.Y, position.Z, 1.0f);
vertices.Add(vertex);
int nextI = (i + 1) % stride;
int nextJ = (j + 1) % stride;
indices.Add(j * stride + i);
indices.Add(nextJ * stride + i);
indices.Add(j * stride + nextI);
indices.Add(j * stride + nextI);
indices.Add(nextJ * stride + i);
indices.Add(nextJ * stride + nextI);
}
}
DX11IndexedGeometry geom = DX11IndexedGeometry.CreateFrom <Pos4Norm3Tex2Vertex>(context, vertices.ToArray(), indices.ToArray(), Pos4Norm3Tex2Vertex.Layout);
geom.Tag = settings;
geom.PrimitiveType = settings.PrimitiveType;
geom.HasBoundingBox = false;
geom.BoundingBox = new BoundingBox(new Vector3(-radius), new Vector3(radius));
return(geom);
}
public DX11IndexedGeometry Torus(Torus settings)
{
int resX = settings.ResolutionX;
int resY = settings.ResolutionY;
float radius = settings.Radius;
float thick = settings.Thickness;
float phasey = settings.PhaseY;
float phasex = settings.PhaseX;
float rot = settings.Rotation;
float cy = settings.CY;
List<Pos4Norm3Tex2Vertex> vertices = new List<Pos4Norm3Tex2Vertex>();
List<int> indices = new List<int>();
float pi = (float)Math.PI;
float pidiv2 = pi * 0.5f;
float twopi = pi * 2.0f;
int stride = resY + 1;
for (int i = 0; i <= resY; i++)
{
float u = (float)i / (float)resY;
//u *= cy;
float outerAngle = (float)i * twopi / (float)resY - pidiv2;
Matrix transform = Matrix.Translation(radius, 0, 0) * Matrix.RotationY(outerAngle*rot);
for (int j = 0; j <= resX; j++)
{
float fj = (float)j * cy;
float v = 1 - (float)j / resX;
float innerAngle = fj * twopi / (float)resX + pi;
float dy = (float)Math.Sin(innerAngle)*phasey;
float dx = (float)Math.Cos(innerAngle)*phasex;
Pos4Norm3Tex2Vertex vertex = new Pos4Norm3Tex2Vertex();
Vector3 normal = new Vector3(dx, dy, 0);
Vector3 position = normal * thick / 2;
vertex.TexCoords = new Vector2(u, v);
vertex.Normals = Vector3.TransformNormal(normal, transform);
position = Vector3.TransformCoordinate(position, transform);
vertex.Position = new Vector4(position.X, position.Y, position.Z, 1.0f);
vertices.Add(vertex);
int nextI = (i + 1) % stride;
int nextJ = (j + 1) % stride;
indices.Add(j * stride + i);
indices.Add(nextJ * stride + i);
indices.Add(j * stride + nextI);
indices.Add(j * stride + nextI);
indices.Add(nextJ * stride + i);
indices.Add(nextJ * stride + nextI);
}
}
DX11IndexedGeometry geom = DX11IndexedGeometry.CreateFrom<Pos4Norm3Tex2Vertex>(context, vertices.ToArray(), indices.ToArray(), Pos4Norm3Tex2Vertex.Layout);
geom.Tag = settings;
geom.PrimitiveType = settings.PrimitiveType;
geom.HasBoundingBox = false;
geom.BoundingBox = new BoundingBox(new Vector3(-radius), new Vector3(radius));
return geom;
}
