public static BasicGeometry CreateSphere <T>(GraphicsDevice device, int slices, int stacks,
float sliceAngle1, float sliceAngle2, float stackAngle1, float stackAngle2,
Func <VertexPositionNormalTexture, T> createVertexCallback, bool insideVisible) where T : struct
{
if (slices < 3 || stacks < 3 || slices > ushort.MaxValue || stacks > ushort.MaxValue || (slices + 1) * (stacks + 1) > ushort.MaxValue)
{
throw new ArgumentOutOfRangeException("Sphere does not support 64K+ vertices");
}
if (sliceAngle1 > sliceAngle2 || stackAngle1 >= stackAngle2)
{
throw new ArgumentOutOfRangeException("Angles are wrong");
}
var vpnt = new T[(slices + 1) * (stacks + 1)];
float phi, theta;
float dphi = (stackAngle2 - stackAngle1) / stacks;
float dtheta = sliceAngle2 == sliceAngle1 ? MathHelper.TwoPi / slices : (sliceAngle2 - sliceAngle1) / slices;
float x, y, z, sc;
int index = 0;
for (int stack = 0; stack <= stacks; stack++)
{
phi = stack == stacks ? stackAngle2 : stackAngle1 + stack * dphi;
y = (float)Math.Sin(phi);
sc = -(float)Math.Cos(phi);
for (int slice = 0; slice <= slices; slice++)
{
theta = slice == slices ? sliceAngle2 : sliceAngle1 + slice * dtheta;
x = sc * (float)Math.Sin(theta);
z = sc * (float)Math.Cos(theta);
vpnt[index++] = createVertexCallback(new VertexPositionNormalTexture(new Vector3(x, y, z), new Vector3(x, y, z),
new Vector2((float)slice / (float)slices, (float)stack / (float)stacks)));
}
}
var indices = new ushort[slices * stacks * 6];
index = 0;
int k = slices + 1;
for (int stack = 0; stack < stacks; stack++)
{
for (int slice = 0; slice < slices; slice++)
{
indices[index++] = (ushort)((stack + 0) * k + slice);
indices[index++] = insideVisible ? (ushort)((stack + 0) * k + slice + 1) : (ushort)((stack + 1) * k + slice + 0);
indices[index++] = insideVisible ? (ushort)((stack + 1) * k + slice + 0) : (ushort)((stack + 0) * k + slice + 1);
indices[index++] = (ushort)((stack + 0) * k + slice + 1);
indices[index++] = insideVisible ? (ushort)((stack + 1) * k + slice + 1) : (ushort)((stack + 1) * k + slice);
indices[index++] = insideVisible ? (ushort)((stack + 1) * k + slice) : (ushort)((stack + 1) * k + slice + 1);
}
}
var ret = new BasicGeometry( );
ret.VertexBuffer = new VertexBuffer(device, typeof(T), vpnt.Length, BufferUsage.WriteOnly);
ret.VertexBuffer.SetData(vpnt);
ret.IndexBuffer = new IndexBuffer(device, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
ret.IndexBuffer.SetData(indices);
ret.Effect = new BasicEffect(device);
return(ret);
}
public static BasicGeometry CreateCube <T>(GraphicsDevice device,
Func <VertexPositionNormalTexture, T> createVertexCallback, bool insideVisible) where T : struct
{
var vertices = new VertexPositionNormalTexture[] {
// X face
new VertexPositionNormalTexture(new Vector3(1, -1, 1), new Vector3(1, 0, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1, 1), new Vector3(1, 0, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(1, -1, -1), new Vector3(1, 0, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1, -1), new Vector3(1, 0, 0), new Vector2(1, 1)),
// -X face
new VertexPositionNormalTexture(new Vector3(-1, -1, -1), new Vector3(-1, 0, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(-1, 1, -1), new Vector3(-1, 0, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(-1, -1, 1), new Vector3(-1, 0, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(-1, 1, 1), new Vector3(-1, 0, 0), new Vector2(1, 1)),
// Y face
new VertexPositionNormalTexture(new Vector3(-1, 1, -1), new Vector3(0, 1, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1, -1), new Vector3(0, 1, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(-1, 1, 1), new Vector3(0, 1, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1, 1), new Vector3(0, 1, 0), new Vector2(1, 1)),
// -Y face
new VertexPositionNormalTexture(new Vector3(-1, -1, -1), new Vector3(0, -1, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(-1, -1, 1), new Vector3(0, -1, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(1, -1, -1), new Vector3(0, -1, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1, -1, 1), new Vector3(0, -1, 0), new Vector2(1, 1)),
// Z face
new VertexPositionNormalTexture(new Vector3(-1, -1, 1), new Vector3(0, 0, 1), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(-1, 1, 1), new Vector3(0, 0, 1), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(1, -1, 1), new Vector3(0, 0, 1), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1, 1), new Vector3(0, 0, 1), new Vector2(1, 1)),
// -Z face
new VertexPositionNormalTexture(new Vector3(1, -1, -1), new Vector3(0, 0, -1), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1, -1), new Vector3(0, 0, -1), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(-1, -1, -1), new Vector3(0, 0, -1), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(-1, 1, -1), new Vector3(0, 0, -1), new Vector2(1, 1)),
};
var convertedVertices = Array.ConvertAll(vertices, x => createVertexCallback(x));
var indices = insideVisible ?
new ushort[]
{
0, 2, 1, 1, 2, 3,
4, 6, 5, 5, 6, 7,
8, 10, 9, 9, 10, 11,
12, 14, 13, 13, 14, 15,
16, 18, 17, 17, 18, 19,
20, 22, 21, 21, 22, 23
} : new ushort[]
{
0, 1, 2, 2, 1, 3,
4, 5, 6, 6, 5, 7,
8, 9, 10, 10, 9, 11,
12, 13, 14, 14, 13, 15,
16, 17, 18, 18, 17, 19,
20, 21, 22, 22, 21, 23
};
var ret = new BasicGeometry( );
ret.VertexBuffer = new VertexBuffer(device, typeof(T), 24, BufferUsage.WriteOnly);
ret.VertexBuffer.SetData(convertedVertices);
ret.IndexBuffer = new IndexBuffer(device, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
ret.IndexBuffer.SetData(indices);
ret.Effect = new BasicEffect(device);
ret.Effect.EnableDefaultLighting( );
ret.Effect.PreferPerPixelLighting = true;
ret.Effect.SpecularPower = 500;
ret.Effect.SpecularColor = new Vector3(0.9f, 0.9f, 1);
return(ret);
}
public static BasicGeometry CreateRoundedCube <T>(GraphicsDevice device,
Func <VertexPositionNormalTexture, T> createVertexCallback, float roundedPortion) where T : struct
{
float a = roundedPortion;
var vertices = new VertexPositionNormalTexture[] {
// X face: 0-3
new VertexPositionNormalTexture(new Vector3(1, a - 1, 1 - a), new Vector3(1, 0, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1 - a, 1 - a), new Vector3(1, 0, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(1, a - 1, a - 1), new Vector3(1, 0, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1, 1 - a, a - 1), new Vector3(1, 0, 0), new Vector2(1, 1)),
// -X face: 4-7
new VertexPositionNormalTexture(new Vector3(-1, a - 1, a - 1), new Vector3(-1, 0, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(-1, 1 - a, a - 1), new Vector3(-1, 0, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(-1, a - 1, 1 - a), new Vector3(-1, 0, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(-1, 1 - a, 1 - a), new Vector3(-1, 0, 0), new Vector2(1, 1)),
// Y face: 8-11
new VertexPositionNormalTexture(new Vector3(a - 1, 1, a - 1), new Vector3(0, 1, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(1 - a, 1, a - 1), new Vector3(0, 1, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(a - 1, 1, 1 - a), new Vector3(0, 1, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1 - a, 1, 1 - a), new Vector3(0, 1, 0), new Vector2(1, 1)),
// -Y face: 12-15
new VertexPositionNormalTexture(new Vector3(a - 1, -1, a - 1), new Vector3(0, -1, 0), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(a - 1, -1, 1 - a), new Vector3(0, -1, 0), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(1 - a, -1, a - 1), new Vector3(0, -1, 0), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1 - a, -1, 1 - a), new Vector3(0, -1, 0), new Vector2(1, 1)),
// Z face: 16-19
new VertexPositionNormalTexture(new Vector3(a - 1, a - 1, 1), new Vector3(0, 0, 1), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(a - 1, 1 - a, 1), new Vector3(0, 0, 1), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(1 - a, a - 1, 1), new Vector3(0, 0, 1), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(1 - a, 1 - a, 1), new Vector3(0, 0, 1), new Vector2(1, 1)),
// -Z face: 20-23
new VertexPositionNormalTexture(new Vector3(1 - a, a - 1, -1), new Vector3(0, 0, -1), new Vector2(0, 0)),
new VertexPositionNormalTexture(new Vector3(1 - a, 1 - a, -1), new Vector3(0, 0, -1), new Vector2(0, 1)),
new VertexPositionNormalTexture(new Vector3(a - 1, a - 1, -1), new Vector3(0, 0, -1), new Vector2(1, 0)),
new VertexPositionNormalTexture(new Vector3(a - 1, 1 - a, -1), new Vector3(0, 0, -1), new Vector2(1, 1)),
};
var convertedVertices = Array.ConvertAll(vertices, x => createVertexCallback(x));
var indices = new ushort[]
{
0, 1, 2, 2, 1, 3, // X
4, 5, 6, 6, 5, 7, // -X
8, 9, 10, 10, 9, 11, // Y
12, 13, 14, 14, 13, 15, // -Y
16, 17, 18, 18, 17, 19, // Z
20, 21, 22, 22, 21, 23, // -Z
1, 0, 18, 18, 19, 1, // X,Z
2, 3, 20, 21, 20, 3, // X,-Z
6, 7, 16, 17, 16, 7, // -X,Z
5, 4, 22, 22, 23, 5, // -X,-Z
3, 1, 9, 11, 9, 1, // X,Y
7, 5, 8, 8, 10, 7, // -X,Y
10, 11, 17, 19, 17, 11, // Y,Z
9, 8, 21, 23, 21, 8, // Y,-Z
0, 2, 14, 14, 15, 0, // X,-Y
4, 6, 12, 13, 12, 6, // -X,-Y
15, 13, 16, 16, 18, 15, // Z,-Y
12, 14, 20, 20, 22, 12, // -Z,-Y
11, 1, 19, // X,Y,Z
3, 9, 21, // X,Y,-Z
7, 10, 17, // -X,Y,Z
8, 5, 23, // -X,Y,-Z
0, 15, 18, // X,-Y,Z
14, 2, 20, // X,-Y,-Z
13, 6, 16, // -X,-Y,Z
4, 12, 22, // -X,-Y,-Z
};
var ret = new BasicGeometry( );
ret.VertexBuffer = new VertexBuffer(device, typeof(T), 24, BufferUsage.WriteOnly);
ret.VertexBuffer.SetData(convertedVertices);
ret.IndexBuffer = new IndexBuffer(device, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
ret.IndexBuffer.SetData(indices);
ret.Effect = new BasicEffect(device);
ret.Effect.EnableDefaultLighting( );
ret.Effect.DiffuseColor = new Vector3(0.9f, 0.5f, 0.2f);
ret.Effect.PreferPerPixelLighting = true;
ret.Effect.SpecularPower = 1000;
ret.Effect.SpecularColor = new Vector3(1, 1, 1);
return(ret);
}