public virtual void CreateMeshData(MeshPoints points, List <int> connections)
{
if (_points.Count <= 2)
{
return;
}
//Add dummy tangent at the beginning and end
_tangents.Add(Vector3.zero);
for (int i = 1; i < _points.Count - 1; i++)
{
Vector3 a = _points[i - 1].Position;
Vector3 b = _points[i].Position;
Vector3 c = _points[i + 1].Position;
Vector3 dir = _hasNormals ? _points[i].Normal : c - a;
Vector3 tangent = Vector3.Cross(dir, c - b);
_tangents.Add(tangent.normalized);
}
_tangents.Add(Vector3.zero);
//End tangents are the same as their neighbors
_tangents[0] = _tangents[1];
_tangents[_tangents.Count - 1] = _tangents[_tangents.Count - 2];
for (int i = 0; i < _points.Count; i++)
{
Vector3 t = _tangents[i] * _radii[i];
MeshPoint p0 = new MeshPoint(_points[i].Position + t);
p0.Uv = new Vector3(0, i / (_points.Count - 1.0f));
p0.Color = _points[i].Color;
points.Add(p0);
MeshPoint p1 = new MeshPoint(_points[i].Position - t);
p1.Uv = new Vector3(1, i / (_points.Count - 1.0f));
p1.Color = _points[i].Color;
points.Add(p1);
}
_tangents.Clear();
for (int i = 0; i < _points.Count - 1; i++)
{
int offset = i * 2;
connections.Add(offset + 0);
connections.Add(offset + 1);
connections.Add(offset + 2);
connections.Add(offset + 1);
connections.Add(offset + 3);
connections.Add(offset + 2);
}
}
public void CreateMeshData(MeshPoints points, List <int> connections)
{
if (_radius == 0F || _radialSubdivisons < 2)
{
return;
}
// MeshPoints
for (int i = 0; i < RadialSubdivisions; i++)
{
Vector3 radiusPoint = Quaternion.AngleAxis(i * (360F / RadialSubdivisions), Vector3.up) * Vector3.right * Radius;
Vector3 radiusDirection = radiusPoint.normalized;
MeshPoint p0 = new MeshPoint(radiusPoint - ((Quaternion.AngleAxis(_tangentAngle, Vector3.Cross(radiusDirection, Vector3.up)) * radiusDirection) * RibbonThickness / 2F));
p0.Uv = new Vector3(i / (float)RadialSubdivisions, 0F);
p0.Color = Color.white;
points.Add(p0);
MeshPoint p1 = new MeshPoint(radiusPoint + ((Quaternion.AngleAxis(_tangentAngle, Vector3.Cross(radiusDirection, Vector3.up)) * radiusDirection) * RibbonThickness / 2F));
p1.Uv = new Vector3(i / (float)RadialSubdivisions, 1F);
p1.Color = Color.white;
points.Add(p1);
}
// Connections
for (int i = 0; i < RadialSubdivisions - 1; i++)
{
int vertexOffset = i * 2;
connections.Add(vertexOffset + 0);
connections.Add(vertexOffset + 1);
connections.Add(vertexOffset + 2);
connections.Add(vertexOffset + 1);
connections.Add(vertexOffset + 3);
connections.Add(vertexOffset + 2);
}
// Complete the circle
connections.Add((RadialSubdivisions * 2) - 2);
connections.Add((RadialSubdivisions * 2) - 1);
connections.Add(0);
connections.Add((RadialSubdivisions * 2) - 1);
connections.Add(1);
connections.Add(0);
}
public void CreateMeshData(MeshPoints points, List <int> connections)
{
if (_points.Count <= 2)
{
return;
}
//Add dummy tangent at the begining and end
_tangents.Add(Vector3.zero);
for (int i = 1; i < _points.Count - 1; i++)
{
Vector3 a = _points[i - 1].Position;
Vector3 b = _points[i].Position;
Vector3 c = _points[i + 1].Position;
Vector3 dir = c - a;
Vector3 tangent = Vector3.Cross(dir, c - b);
_tangents.Add(tangent.normalized);
}
_tangents.Add(Vector3.zero);
//End tangents are the same as their neighbors
_tangents[0] = _tangents[1];
_tangents[_tangents.Count - 1] = _tangents[_tangents.Count - 2];
for (int i = 0; i < _points.Count; i++)
{
Vector3 t = _tangents[i];
Vector3 direction;
if (i == 0)
{
direction = (_points[i + 1].Position - _points[i].Position).normalized;
}
else if (i == _points.Count - 1)
{
direction = (_points[i].Position - _points[i - 1].Position).normalized;
}
else
{
direction = (_points[i + 1].Position - _points[i - 1].Position).normalized;
}
MeshPoint centerPoint = _points[i];
float radius = _radii[i];
for (int j = 0; j < _resolution; j++)
{
float angle = j * 360.0f / _resolution;
Quaternion rotation = Quaternion.AngleAxis(angle, direction);
Vector3 spoke = rotation * t * radius;
MeshPoint p = new MeshPoint(centerPoint.Position + spoke);
p.Color = centerPoint.Color;
p.Uv = new Vector2(j / (float)_resolution, i / (_points.Count - 1.0f));
points.Add(p);
}
}
_tangents.Clear();
for (int i = 0; i < _points.Count - 1; i++)
{
int offset = i * _resolution;
for (int j = 0; j < _resolution; j++)
{
int i0 = (j + 0) % _resolution + offset;
int i1 = (j + 1) % _resolution + offset;
int i2 = (j + 0) % _resolution + offset + _resolution;
int i3 = (j + 1) % _resolution + offset + _resolution;
connections.Add(i0);
connections.Add(i1);
connections.Add(i2);
connections.Add(i1);
connections.Add(i3);
connections.Add(i2);
}
}
}
public void Add(MeshPoint point)
{
_points.Add(point);
}
