/// <summary>
/// Adds mesh information from another draft
/// </summary>
public void Add(MeshDraft draft)
{
foreach (var triangle in draft.triangles)
{
triangles.Add(triangle + vertices.Count);
}
vertices.AddRange(draft.vertices);
normals.AddRange(draft.normals);
uv.AddRange(draft.uv);
colors.AddRange(draft.colors);
}
public static MeshDraft Band(List<Vector3> lowerRing, List<Vector3> upperRing)
{
var draft = new MeshDraft {name = "Band"};
if (lowerRing.Count < 3 || upperRing.Count < 3)
{
Debug.LogError("Array sizes must be greater than 2");
return draft;
}
if (lowerRing.Count != upperRing.Count)
{
Debug.LogError("Array sizes must be equal");
return draft;
}
draft.vertices.AddRange(lowerRing);
draft.vertices.AddRange(upperRing);
var lowerNormals = new List<Vector3>();
var upperNormals = new List<Vector3>();
var lowerUv = new List<Vector2>();
var upperUv = new List<Vector2>();
int i0, i1, i2, i3;
Vector3 v0, v1, v2, v3;
for (int i = 0; i < lowerRing.Count - 1; i++)
{
i0 = i;
i1 = i + lowerRing.Count;
i2 = i + 1;
i3 = i + 1 + lowerRing.Count;
v0 = draft.vertices[i0];
v1 = draft.vertices[i1];
v2 = draft.vertices[i2];
v3 = draft.vertices[i3];
draft.triangles.AddRange(new[] {i0, i1, i2});
draft.triangles.AddRange(new[] {i2, i1, i3});
lowerNormals.Add(Vector3.Cross(v1 - v0, v2 - v0).normalized);
upperNormals.Add(Vector3.Cross(v3 - v1, v0 - v1).normalized);
var u = (float) i/(lowerRing.Count - 1);
lowerUv.Add(new Vector2(u, 0));
upperUv.Add(new Vector2(u, 1));
}
i0 = lowerRing.Count - 1;
i1 = lowerRing.Count*2 - 1;
i2 = 0;
i3 = lowerRing.Count;
v0 = draft.vertices[i0];
v1 = draft.vertices[i1];
v2 = draft.vertices[i2];
v3 = draft.vertices[i3];
draft.triangles.AddRange(new[] {i0, i1, i2});
draft.triangles.AddRange(new[] {i2, i1, i3});
lowerNormals.Add(Vector3.Cross(v1 - v0, v2 - v0).normalized);
upperNormals.Add(Vector3.Cross(v3 - v1, v0 - v1).normalized);
draft.normals.AddRange(lowerNormals);
draft.normals.AddRange(upperNormals);
lowerUv.Add(new Vector2(1, 0));
upperUv.Add(new Vector2(1, 1));
draft.uv.AddRange(lowerUv);
draft.uv.AddRange(upperUv);
return draft;
}
public static MeshDraft RevolutionSurface(
Func <float, float, float, float, Vector3> surfaceFunction,
float radius,
float height,
int horizontalSegments,
int verticalSegments)
{
var draft = new MeshDraft {
name = "Revolution surface"
};
float horizontalSegmentAngle = 360f / horizontalSegments;
float verticalSegmentAngle = 180f / verticalSegments;
float currentVerticalAngle = -90;
for (int ring = 0; ring <= verticalSegments; ring++)
{
float currentHorizontalAngle = 0f;
for (int i = 0; i < horizontalSegments; i++)
{
Vector3 point = surfaceFunction(radius, height, currentHorizontalAngle, currentVerticalAngle);
draft.vertices.Add(point);
draft.normals.Add(point.normalized);
draft.uv.Add(new Vector2((float)i / horizontalSegments, (float)ring / verticalSegments));
currentHorizontalAngle -= horizontalSegmentAngle;
}
currentVerticalAngle += verticalSegmentAngle;
}
for (int ring = 0; ring < verticalSegments; ring++)
{
int i0, i1, i2, i3;
for (int i = 0; i < horizontalSegments - 1; i++)
{
i0 = ring * horizontalSegments + i;
i1 = (ring + 1) * horizontalSegments + i;
i2 = ring * horizontalSegments + i + 1;
i3 = (ring + 1) * horizontalSegments + i + 1;
draft.triangles.Add(i0);
draft.triangles.Add(i1);
draft.triangles.Add(i2);
draft.triangles.Add(i2);
draft.triangles.Add(i1);
draft.triangles.Add(i3);
}
i0 = (ring + 1) * horizontalSegments - 1;
i1 = (ring + 2) * horizontalSegments - 1;
i2 = ring * horizontalSegments;
i3 = (ring + 1) * horizontalSegments;
draft.triangles.Add(i0);
draft.triangles.Add(i1);
draft.triangles.Add(i2);
draft.triangles.Add(i2);
draft.triangles.Add(i1);
draft.triangles.Add(i3);
}
return(draft);
}
public static Mesh Prism(float radius, int segments, float height)
{
return(MeshDraft.Prism(radius, segments, height).ToMesh());
}
public static MeshDraft BaselessPyramid(Vector3 baseCenter, Vector3 apex, float radius, int segments,
bool inverted = false)
{
float segmentAngle = Mathf.PI*2/segments*(inverted ? -1 : 1);
float currentAngle = 0f;
var vertices = new Vector3[segments + 1];
vertices[0] = apex;
for (var i = 1; i <= segments; i++)
{
vertices[i] = PTUtils.PointOnCircle3(radius, currentAngle) + baseCenter;
currentAngle += segmentAngle;
}
var draft = new MeshDraft {name = "BaselessPyramid"};
for (var i = 1; i < segments; i++)
{
draft.Add(Triangle(vertices[0], vertices[i], vertices[i + 1]));
}
draft.Add(Triangle(vertices[0], vertices[vertices.Length - 1], vertices[1]));
return draft;
}
/// <remarks>
/// https://en.wikipedia.org/wiki/Triangle_fan
/// </remarks>
public static MeshDraft TriangleFan(List<Vector3> vertices)
{
var draft = new MeshDraft
{
vertices = vertices,
triangles = new List<int>(vertices.Count - 2),
normals = new List<Vector3>(vertices.Count),
uv = new List<Vector2>(vertices.Count),
name = "TriangleFan"
};
for (int i = 1; i < vertices.Count - 1; i++)
{
draft.triangles.Add(0);
draft.triangles.Add(i);
draft.triangles.Add(i + 1);
}
var normal = Vector3.Cross(vertices[1] - vertices[0], vertices[2] - vertices[0]).normalized;
for (int i = 0; i < vertices.Count; i++)
{
draft.normals.Add(normal);
draft.uv.Add(new Vector2((float) i/vertices.Count, (float) i/vertices.Count));
}
return draft;
}
public static MeshDraft Plane(float xSize = 1, float zSize = 1, int xSegments = 1, int zSegments = 1)
{
float xStep = xSize/xSegments;
float zStep = zSize/zSegments;
var vertexCount = (xSegments + 1)*(zSegments + 1);
var draft = new MeshDraft
{
name = "Plane",
vertices = new List<Vector3>(vertexCount),
triangles = new List<int>(xSegments*zSegments*6),
normals = new List<Vector3>(vertexCount),
uv = new List<Vector2>(vertexCount)
};
for (int z = 0; z <= zSegments; z++)
{
for (int x = 0; x <= xSegments; x++)
{
draft.vertices.Add(new Vector3(x*xStep, 0f, z*zStep));
draft.normals.Add(Vector3.up);
draft.uv.Add(new Vector2((float) x/xSegments, (float) z/zSegments));
}
}
int i = 0;
for (int z = 0; z < zSegments; z++)
{
for (int x = 0; x < xSegments; x++)
{
draft.triangles.Add(i);
draft.triangles.Add(i + xSegments + 1);
draft.triangles.Add(i + 1);
draft.triangles.Add(i + 1);
draft.triangles.Add(i + xSegments + 1);
draft.triangles.Add(i + xSegments + 2);
i++;
}
i++;
}
return draft;
}
public static MeshDraft FlatSphere(float radius, int longitudeSegments, int latitudeSegments)
{
float longitudeSegmentAngle = Mathf.PI*2/longitudeSegments;
float latitudeSegmentAngle = Mathf.PI/latitudeSegments;
float currentLatitude = -Mathf.PI/2;
var rings = new List<List<Vector3>>(latitudeSegments);
for (var i = 0; i <= latitudeSegments; i++)
{
var currentLongitude = 0f;
var ring = new List<Vector3>(longitudeSegments);
for (int j = 0; j < longitudeSegments; j++)
{
ring.Add(PTUtils.PointOnSphere(radius, currentLongitude, currentLatitude));
currentLongitude -= longitudeSegmentAngle;
}
rings.Add(ring);
currentLatitude += latitudeSegmentAngle;
}
var draft = new MeshDraft {name = "Flat sphere"};
for (int i = 0; i < rings.Count - 1; i++)
{
draft.Add(FlatBand(rings[i], rings[i + 1]));
}
return draft;
}
public static Mesh Icosahedron(float radius)
{
return(MeshDraft.Icosahedron(radius).ToMesh());
}
public static Mesh Dodecahedron(float radius)
{
return(MeshDraft.Dodecahedron(radius).ToMesh());
}
public static Mesh Hexahedron(Vector3 width, Vector3 length, Vector3 height)
{
return(MeshDraft.Hexahedron(width, length, height).ToMesh());
}
public static Mesh Hexahedron(float width, float length, float height)
{
return(MeshDraft.Hexahedron(width, length, height).ToMesh());
}
public static Mesh TriangleStrip(List <Vector3> vertices)
{
return(MeshDraft.TriangleStrip(vertices).ToMesh());
}
public static Mesh Sphere(float radius, int longitudeSegments, int latitudeSegments)
{
return(MeshDraft.Sphere(radius, longitudeSegments, latitudeSegments).ToMesh());
}
public static Mesh Cylinder(float radius, int segments, float height)
{
return(MeshDraft.Cylinder(radius, segments, height).ToMesh());
}
public static MeshDraft BaselessPyramid(Vector3 apex, List<Vector3> ring)
{
var draft = new MeshDraft {name = "BaselessPyramid"};
for (var i = 0; i < ring.Count - 1; i++)
{
draft.Add(Triangle(apex, ring[i], ring[i + 1]));
}
draft.Add(Triangle(apex, ring[ring.Count - 1], ring[0]));
return draft;
}
public static MeshDraft FlatBand(List<Vector3> lowerRing, List<Vector3> upperRing)
{
var draft = new MeshDraft {name = "Flat band"};
if (lowerRing.Count < 3 || upperRing.Count < 3)
{
Debug.LogError("Array sizes must be greater than 2");
return draft;
}
if (lowerRing.Count != upperRing.Count)
{
Debug.LogError("Array sizes must be equal");
return draft;
}
Vector3 v0, v1, v2, v3;
for (int i = 0; i < lowerRing.Count - 1; i++)
{
v0 = lowerRing[i];
v1 = upperRing[i];
v2 = lowerRing[i + 1];
v3 = upperRing[i + 1];
draft.Add(Triangle(v0, v1, v2));
draft.Add(Triangle(v2, v1, v3));
}
v0 = lowerRing[lowerRing.Count - 1];
v1 = upperRing[upperRing.Count - 1];
v2 = lowerRing[0];
v3 = upperRing[0];
draft.Add(Triangle(v0, v1, v2));
draft.Add(Triangle(v2, v1, v3));
return draft;
}
public static Mesh Plane(float xSize = 1, float zSize = 1, int xSegments = 1, int zSegments = 1)
{
return(MeshDraft.Plane(xSize, zSize, xSegments, zSegments).ToMesh());
}
/// <summary>
/// Constructs partial hexahedron aka cube with specified faces
/// </summary>
public static MeshDraft Hexahedron(Vector3 width, Vector3 length, Vector3 height, Directions parts)
{
Vector3 corner0 = -width/2 - length/2 - height/2;
Vector3 corner1 = width/2 + length/2 + height/2;
var draft = new MeshDraft {name = "Hexahedron"};
if ((parts & Directions.Left) == Directions.Left)
{
draft.Add(Quad(corner0, height, length));
}
if ((parts & Directions.Right) == Directions.Right)
{
draft.Add(Quad(corner1, -length, -height));
}
if ((parts & Directions.Down) == Directions.Down)
{
draft.Add(Quad(corner0, length, width));
}
if ((parts & Directions.Up) == Directions.Up)
{
draft.Add(Quad(corner1, -width, -length));
}
if ((parts & Directions.Back) == Directions.Back)
{
draft.Add(Quad(corner0, width, height));
}
if ((parts & Directions.Forward) == Directions.Forward)
{
draft.Add(Quad(corner1, -height, -width));
}
return draft;
}
public static MeshDraft BandDraft(List <Vector3> lowerRing, List <Vector3> upperRing)
{
var draft = new MeshDraft {
name = "Band"
};
if (lowerRing.Count < 3 || upperRing.Count < 3)
{
Debug.LogError("Array sizes must be greater than 2");
return(draft);
}
if (lowerRing.Count != upperRing.Count)
{
Debug.LogError("Array sizes must be equal");
return(draft);
}
draft.vertices.AddRange(lowerRing);
draft.vertices.AddRange(upperRing);
var lowerNormals = new List <Vector3>();
var upperNormals = new List <Vector3>();
var lowerUv = new List <Vector2>();
var upperUv = new List <Vector2>();
int i0, i1, i2, i3;
Vector3 v0, v1, v2, v3;
for (int i = 0; i < lowerRing.Count - 1; i++)
{
i0 = i;
i1 = i + lowerRing.Count;
i2 = i + 1;
i3 = i + 1 + lowerRing.Count;
v0 = draft.vertices[i0];
v1 = draft.vertices[i1];
v2 = draft.vertices[i2];
v3 = draft.vertices[i3];
draft.triangles.AddRange(new[] { i0, i1, i2 });
draft.triangles.AddRange(new[] { i2, i1, i3 });
lowerNormals.Add(Vector3.Cross(v1 - v0, v2 - v0).normalized);
upperNormals.Add(Vector3.Cross(v3 - v1, v0 - v1).normalized);
var u = (float)i / (lowerRing.Count - 1);
lowerUv.Add(new Vector2(u, 0));
upperUv.Add(new Vector2(u, 1));
}
i0 = lowerRing.Count - 1;
i1 = lowerRing.Count * 2 - 1;
i2 = 0;
i3 = lowerRing.Count;
v0 = draft.vertices[i0];
v1 = draft.vertices[i1];
v2 = draft.vertices[i2];
v3 = draft.vertices[i3];
draft.triangles.AddRange(new[] { i0, i1, i2 });
draft.triangles.AddRange(new[] { i2, i1, i3 });
lowerNormals.Add(Vector3.Cross(v1 - v0, v2 - v0).normalized);
upperNormals.Add(Vector3.Cross(v3 - v1, v0 - v1).normalized);
draft.normals.AddRange(lowerNormals);
draft.normals.AddRange(upperNormals);
lowerUv.Add(new Vector2(1, 0));
upperUv.Add(new Vector2(1, 1));
draft.uv.AddRange(lowerUv);
draft.uv.AddRange(upperUv);
return(draft);
}
public static MeshDraft Sphere(float radius, int longitudeSegments, int latitudeSegments)
{
var draft = new MeshDraft {name = "Sphere"};
float longitudeSegmentAngle = Mathf.PI*2/longitudeSegments;
float latitudeSegmentAngle = Mathf.PI/latitudeSegments;
float currentLatitude = -Mathf.PI/2;
for (var ring = 0; ring <= latitudeSegments; ring++)
{
var currentLongitude = 0f;
for (int i = 0; i < longitudeSegments; i++)
{
var point = PTUtils.PointOnSphere(radius, currentLongitude, currentLatitude);
draft.vertices.Add(point);
draft.normals.Add(point.normalized);
draft.uv.Add(new Vector2((float) i/longitudeSegments, (float) ring/latitudeSegments));
currentLongitude -= longitudeSegmentAngle;
}
currentLatitude += latitudeSegmentAngle;
}
int i0, i1, i2, i3;
for (int ring = 0; ring < latitudeSegments; ring++)
{
for (int i = 0; i < longitudeSegments - 1; i++)
{
i0 = ring*longitudeSegments + i;
i1 = (ring + 1)*longitudeSegments + i;
i2 = ring*longitudeSegments + i + 1;
i3 = (ring + 1)*longitudeSegments + i + 1;
draft.triangles.AddRange(new[] {i0, i1, i2});
draft.triangles.AddRange(new[] {i2, i1, i3});
}
i0 = (ring + 1)*longitudeSegments - 1;
i1 = (ring + 2)*longitudeSegments - 1;
i2 = ring*longitudeSegments;
i3 = (ring + 1)*longitudeSegments;
draft.triangles.AddRange(new[] {i0, i1, i2});
draft.triangles.AddRange(new[] {i2, i1, i3});
}
return draft;
}
/// <summary>
/// Constructs a flat revolution surface draft
/// </summary>
public static MeshDraft FlatRevolutionSurface(
Func <float, float, float, float, Vector3> surfaceFunction,
float radius,
float height,
int horizontalSegments,
int verticalSegments,
bool generateUV = true)
{
float horizontalSegmentAngle = 360f / horizontalSegments;
float verticalSegmentAngle = 180f / verticalSegments;
float currentVerticalAngle = -90;
int horizontalCount = horizontalSegments + 1;
var ringsVertices = new List <List <Vector3> >(verticalSegments);
var ringsUV = new List <List <Vector2> >(verticalSegments);
for (int y = 0; y <= verticalSegments; y++)
{
float currentHorizontalAngle = 0f;
var ringVertices = new List <Vector3>(horizontalCount);
var ringUV = new List <Vector2>(horizontalCount);
for (int x = 0; x <= horizontalSegments; x++)
{
var point = surfaceFunction(radius, height, currentHorizontalAngle, currentVerticalAngle);
ringVertices.Add(point);
if (generateUV)
{
ringUV.Add(new Vector2(1 - (float)x / horizontalSegments, (float)y / verticalSegments));
}
currentHorizontalAngle += horizontalSegmentAngle;
}
ringsVertices.Add(ringVertices);
ringsUV.Add(ringUV);
currentVerticalAngle += verticalSegmentAngle;
}
var draft = new MeshDraft {
name = "Flat revolution surface"
};
for (int y = 0; y < ringsVertices.Count - 1; y++)
{
var lowerRingVertices = ringsVertices[y];
var upperRingVertices = ringsVertices[y + 1];
var lowerRingUV = ringsUV[y];
var upperRingUV = ringsUV[y + 1];
for (int x = 0; x < horizontalSegments; x++)
{
Vector3 v00 = lowerRingVertices[x + 1];
Vector3 v01 = upperRingVertices[x + 1];
Vector3 v11 = upperRingVertices[x];
Vector3 v10 = lowerRingVertices[x];
Vector2 uv00 = lowerRingUV[x + 1];
Vector2 uv01 = upperRingUV[x + 1];
Vector2 uv11 = upperRingUV[x];
Vector2 uv10 = lowerRingUV[x];
draft.AddQuad(v00, v01, v11, v10, uv00, uv01, uv11, uv10);
}
}
return(draft);
}
/// <remarks>
/// https://en.wikipedia.org/wiki/Triangle_strip
/// </remarks>
public static MeshDraft TriangleStrip(List<Vector3> vertices)
{
var draft = new MeshDraft
{
vertices = vertices,
triangles = new List<int>(vertices.Count - 2),
normals = new List<Vector3>(vertices.Count),
uv = new List<Vector2>(vertices.Count),
name = "TriangleStrip"
};
for (int i = 0, j = 1, k = 2; i < vertices.Count - 2; i++, j += i%2*2, k += (i + 1)%2*2)
{
draft.triangles.Add(i);
draft.triangles.Add(j);
draft.triangles.Add(k);
}
var normal = Vector3.Cross(vertices[1] - vertices[0], vertices[2] - vertices[0]).normalized;
for (int i = 0; i < vertices.Count; i++)
{
draft.normals.Add(normal);
draft.uv.Add(new Vector2((float) i/vertices.Count, (float) i/vertices.Count));
}
return draft;
}
/// <summary>
/// Constructs a revolution surface draft
/// </summary>
public static MeshDraft RevolutionSurface(
Func <float, float, float, float, Vector3> surfaceFunction,
float radius,
float height,
int horizontalSegments,
int verticalSegments,
bool generateUV = true,
float domeDegrees = 0f)
{
var draft = new MeshDraft {
name = "Revolution surface"
};
float horizontalSegmentAngle = 360f / horizontalSegments;
float verticalSegmentAngle = 180f / verticalSegments;
float currentVerticalAngle = -90;
// Calculate vertical segments required if we need to build a dome
if (domeDegrees != 0f)
{
verticalSegments = (int)(domeDegrees / (360f / verticalSegments));
}
int startY = 0;
int endY = verticalSegments;
int stepY = 1;
for (int y = startY; (stepY == 1 ? y <= endY : y >= endY); y += stepY)
{
float currentHorizontalAngle = 0f;
for (int x = 0; x <= horizontalSegments; x++)
{
Vector3 point = surfaceFunction(radius, height, currentHorizontalAngle, currentVerticalAngle);
draft.vertices.Add(point);
draft.normals.Add(point.normalized);
if (generateUV)
{
draft.uv.Add(new Vector2((float)x / horizontalSegments, (float)y / verticalSegments));
}
currentHorizontalAngle -= horizontalSegmentAngle;
}
currentVerticalAngle += verticalSegmentAngle;
}
// Extra vertices due to the uvmap seam
int horizontalCount = horizontalSegments + 1;
for (int ring = (startY > 0 ? startY - 1 : startY); (stepY == 1 ? ring <endY : ring> endY); ring += stepY)
{
for (int i = 0; i < horizontalCount - 1; i++)
{
int i0 = ring * horizontalCount + i;
int i1 = (ring + 1) * horizontalCount + i;
int i2 = ring * horizontalCount + i + 1;
int i3 = (ring + 1) * horizontalCount + i + 1;
draft.triangles.Add(i0);
draft.triangles.Add(i1);
draft.triangles.Add(i2);
draft.triangles.Add(i2);
draft.triangles.Add(i1);
draft.triangles.Add(i3);
}
}
return(draft);
}
/// <summary>
/// Constructs a partial box with specified faces
/// </summary>
public static MeshDraft PartialBox(Vector3 width, Vector3 length, Vector3 height, Directions parts, bool generateUV = true)
{
Vector3 v000 = -width / 2 - length / 2 - height / 2;
Vector3 v001 = v000 + height;
Vector3 v010 = v000 + width;
Vector3 v011 = v000 + width + height;
Vector3 v100 = v000 + length;
Vector3 v101 = v000 + length + height;
Vector3 v110 = v000 + width + length;
Vector3 v111 = v000 + width + length + height;
var draft = new MeshDraft {
name = "Partial box"
};
if (generateUV)
{
Vector2 uv0 = new Vector2(0, 0);
Vector2 uv1 = new Vector2(0, 1);
Vector2 uv2 = new Vector2(1, 1);
Vector2 uv3 = new Vector2(1, 0);
if (parts.HasFlag(Directions.Left))
{
draft.AddQuad(v100, v101, v001, v000, Vector3.left, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Right))
{
draft.AddQuad(v010, v011, v111, v110, Vector3.right, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Down))
{
draft.AddQuad(v010, v110, v100, v000, Vector3.down, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Up))
{
draft.AddQuad(v111, v011, v001, v101, Vector3.up, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Back))
{
draft.AddQuad(v000, v001, v011, v010, Vector3.back, uv0, uv1, uv2, uv3);
}
if (parts.HasFlag(Directions.Forward))
{
draft.AddQuad(v110, v111, v101, v100, Vector3.forward, uv0, uv1, uv2, uv3);
}
}
else
{
if (parts.HasFlag(Directions.Left))
{
draft.AddQuad(v100, v101, v001, v000, Vector3.left);
}
if (parts.HasFlag(Directions.Right))
{
draft.AddQuad(v010, v011, v111, v110, Vector3.right);
}
if (parts.HasFlag(Directions.Down))
{
draft.AddQuad(v010, v110, v100, v000, Vector3.down);
}
if (parts.HasFlag(Directions.Up))
{
draft.AddQuad(v111, v011, v001, v101, Vector3.up);
}
if (parts.HasFlag(Directions.Back))
{
draft.AddQuad(v000, v001, v011, v010, Vector3.back);
}
if (parts.HasFlag(Directions.Forward))
{
draft.AddQuad(v110, v111, v101, v100, Vector3.forward);
}
}
return(draft);
}
public static Mesh Pyramid(float radius, int segments, float height, bool inverted = false)
{
return(MeshDraft.Pyramid(radius, segments, height, inverted).ToMesh());
}