void DrawShape(List <Vector3> mirror, int count, int resolution = 5)
{
// left side
var points = new List <Vector3>();
for (int i = 0; i <= count; i++)
{
var edge = PFCatmullRomSpline.GetCatmullRomPositions(
resolution,
PFShape.GetLoopPoint(mirror, i - 1),
PFShape.GetLoopPoint(mirror, i),
PFShape.GetLoopPoint(mirror, i + 1),
PFShape.GetLoopPoint(mirror, i + 2)
);
if (i != 0)
{
edge.RemoveAt(0);
}
points.AddRange(edge);
}
for (int i = 0, n = points.Count - 1; i < n; i++)
{
var from = points[i];
var to = points[i + 1];
Handles.DrawLine(Translate(from), Translate(to));
}
for (int i = 0, n = points.Count - 1; i < n; i++)
{
var from = points[i];
var to = points[i + 1];
Handles.DrawLine(Translate(new Vector2(-from.x, from.y)), Translate(new Vector2(-to.x, to.y)));
}
}
public static Mesh Build(float size, List <PFControlPoint> controls, int numberOfVerticesOnOneSide = 20, int resolution = 2, float noiseDepth = 0.25f, Vector2 noiseScale = default(Vector2), Vector2 noiseOffset = default(Vector2))
{
var mesh = new Mesh();
resolution = Mathf.Max(1, resolution);
if (controls.Count < 1)
{
throw new UnityException("control points size is not enough");
}
int controlSize = controls.Count;
var counts = GetCounts(controls, numberOfVerticesOnOneSide);
int countOnEdge = counts.Aggregate((acc, next) => {
return(acc + next);
});
var bottom = new Vector3(0f, 0f, 0f);
var top = new Vector3(0f, size, 0f);
var points = new List <Vector3>();
points.Add(bottom);
points.AddRange(controls.Select(p => new Vector3(p.width * size, p.height * size, 0f)));
points.Add(top);
var reverse = controls.ToList();
reverse.Reverse();
points.AddRange(reverse.Select(p => new Vector3(-p.width * size, p.height * size, 0f)));
var vertices = new List <Vector3>();
var uv = new List <Vector2>();
// left side
for (int i = 0; i < resolution; i++)
{
var r = (float)(resolution - i) / resolution;
for (int c = 0; c <= controlSize; c++)
{
var edge = PFCatmullRomSpline.GetCatmullRomPositions(
counts[c],
GetEdge(GetLoopPoint(points, c - 1), r),
GetEdge(GetLoopPoint(points, c), r),
GetEdge(GetLoopPoint(points, c + 1), r),
GetEdge(GetLoopPoint(points, c + 2), r)
);
vertices.AddRange(edge);
uv.AddRange(edge.Select(v => {
return(new Vector2(v.x / size, v.y / size));
}));
}
}
// midrib
for (int c = 0; c <= controlSize; c++)
{
var edge = PFCatmullRomSpline.GetCatmullRomPositions(
counts[c],
GetEdge(GetLoopPoint(points, c - 1), 0f),
GetEdge(GetLoopPoint(points, c), 0f),
GetEdge(GetLoopPoint(points, c + 1), 0f),
GetEdge(GetLoopPoint(points, c + 2), 0f)
);
vertices.AddRange(edge);
uv.AddRange(edge.Select(v => {
return(new Vector2(0f, v.y / size));
}));
}
// right side
for (int i = 0; i < resolution; i++)
{
var r = -(float)(i + 1) / resolution;
for (int c = 0; c <= controlSize; c++)
{
var edge = PFCatmullRomSpline.GetCatmullRomPositions(
counts[c],
GetEdge(GetLoopPoint(points, c - 1), r),
GetEdge(GetLoopPoint(points, c), r),
GetEdge(GetLoopPoint(points, c + 1), r),
GetEdge(GetLoopPoint(points, c + 2), r)
);
vertices.AddRange(edge);
uv.AddRange(edge.Select(v => {
return(new Vector2(v.x / size, v.y / size));
}));
}
}
var triangles = new List <int>();
// left side faces
for (int i = 0, n = resolution; i < n; i++)
{
var offset = i * countOnEdge;
for (int j = 0; j < countOnEdge - 1; j++)
{
var a = j + offset;
var b = a + 1;
var c = a + countOnEdge;
var d = b + countOnEdge;
triangles.Add(a); triangles.Add(b); triangles.Add(c);
triangles.Add(b); triangles.Add(d); triangles.Add(c);
}
}
// right side faces
for (int i = 0, n = resolution; i < n; i++)
{
var offset = (i + resolution) * countOnEdge;
for (int j = 0; j < countOnEdge - 1; j++)
{
var a = j + offset;
var b = a + 1;
var c = a + countOnEdge;
var d = b + countOnEdge;
triangles.Add(a); triangles.Add(d); triangles.Add(c);
triangles.Add(b); triangles.Add(d); triangles.Add(a);
}
}
var noffset = noiseOffset + new Vector2(size, size);
mesh.vertices = vertices.Select(v => {
return(new Vector3(v.x, v.y, v.y * noiseDepth * Depth(v, noffset, noiseScale)));
}).ToArray();
mesh.uv = uv.ToArray();
mesh.triangles = triangles.ToArray();
mesh.RecalculateBounds();
mesh.RecalculateNormals();
return(mesh);
}
Mesh Build(List <Vector3> controls, int wresolution, int hresolution, float radius, Func <float, float> f)
{
controls = controls.ToList();
if (controls.Count < 4)
{
throw new UnityException("control size is not enough");
}
Vector3 first = controls[0], second = controls[1];
Vector3 blast = controls[controls.Count - 2], last = controls[controls.Count - 1];
controls.Insert(0, first + (first - second).normalized * 0.25f);
controls.Add(last + (last - blast).normalized * 0.25f);
var cores = new List <Vector3>();
for (int i = 1, n = controls.Count - 2; i < n; i++)
{
var tmp = PFCatmullRomSpline.GetCatmullRomPositions(hresolution, controls[i - 1], controls[i], controls[i + 1], controls[i + 2]);
if (i != 1)
{
tmp.RemoveAt(0);
}
cores.AddRange(tmp);
}
var vertices = new List <Vector3>();
var uv = new List <Vector2>();
var triangles = new List <int>();
var mesh = new Mesh();
var circle = new List <Vector3>();
for (int i = 0; i < wresolution; i++)
{
var r = ((float)i / wresolution) * (Mathf.PI * 2f);
var cos = Mathf.Cos(r) * radius;
var sin = Mathf.Sin(r) * radius;
circle.Add(new Vector3(cos, sin, 0f));
}
vertices.Add(cores.First());
Vector3 right = Vector3.right;
bool inverse = false;
segments = new List <Point>();
for (int i = 0, n = cores.Count; i < n; i++)
{
var core = cores[i];
var v = (float)i / (n - 1);
if (i == 0)
{
// first segment
for (int j = 0; j < wresolution; j++)
{
triangles.Add(0); triangles.Add((j + 1) % wresolution + 1); triangles.Add(j + 1);
}
var next = cores[i + 1];
var dir = (next - core).normalized;
right = (Quaternion.LookRotation(dir) * Vector3.right).normalized;
uv.Add(new Vector2(0.5f, 0f));
}
var offset = i * wresolution + 1;
if (i < n - 1)
{
var next = cores[i + 1];
var dir = (next - core).normalized;
var cr = (Quaternion.LookRotation(dir) * Vector3.right).normalized;
if (Vector3.Dot(right, cr) < 0f)
{
inverse = !inverse;
}
var rotation = AddCircle(vertices, core, circle, f(v), dir, inverse);
segments.Add(new Point(core, rotation));
right = cr;
for (int j = 0; j < wresolution; j++)
{
var a = offset + j;
var b = offset + (j + 1) % wresolution;
var c = a + wresolution;
var d = b + wresolution;
triangles.Add(a); triangles.Add(b); triangles.Add(c);
triangles.Add(c); triangles.Add(b); triangles.Add(d);
var u = (float)j / (wresolution - 1);
uv.Add(new Vector2(u, v));
}
}
else
{
// last segment
var prev = cores[i - 1];
var dir = (core - prev).normalized;
var cr = (Quaternion.LookRotation(dir) * Vector3.right).normalized;
if (Vector3.Dot(right, cr) < 0f)
{
inverse = !inverse;
}
var rotation = AddCircle(vertices, core, circle, f(v), dir, inverse);
tip = new Point(core, rotation);
vertices.Add(cores.Last());
uv.Add(new Vector2(0.5f, 1f));
int m = vertices.Count - 1;
for (int j = 0; j < wresolution; j++)
{
triangles.Add(m);
triangles.Add(offset + j);
triangles.Add(offset + ((j + 1) % wresolution));
var u = (float)j / (wresolution - 1);
uv.Add(new Vector2(u, v));
}
}
}
mesh.vertices = vertices.ToArray();
mesh.uv = uv.ToArray();
mesh.triangles = triangles.ToArray();
mesh.RecalculateBounds();
mesh.RecalculateNormals();
return(mesh);
}