protected override void BuildMeshComponents()
{
var points = CatmullRomSpline.GetPoints(MeshHelper.ConvertVec2ToVec3(SplinePoints), Resolution);
if (MinArea.HasValue)
{
points = SplineSimplification.Simplify(points, MinArea.Value, true, false);
}
Vertices = points.ToArray();
CenterShift = MeshHelper.GetCenter(Vertices);
for (int i = 0; i < Vertices.Length; i++)
{
Vertices[i] -= CenterShift;
}
Triangles = new int[Vertices.Length * 3];
for (int i = 0; i < Vertices.Length; i++)
{
Triangles[i * 3 + 0] = 0;
Triangles[i * 3 + 1] = i;
Triangles[i * 3 + 2] = (i + 1) % Vertices.Length;
}
UVs = MeshHelper.UVUnwrap(Vertices);
}
protected override void BuildMeshComponents()
{
Vector2 center = MeshHelper.GetCenter(SplinePoints);
for (int i = 0; i < SplinePoints.Length; i++)
{
SplinePoints[i] -= center;
}
var points = CatmullRomSpline.GetPoints(MeshHelper.ConvertVec2ToVec3(SplinePoints), Resolution);
if (MinArea.HasValue)
{
points = SplineSimplification.Simplify(points, MinArea.Value, true, false);
}
Vertices = points.ToArray();
var connections = Triangulation.TriangulationToInt3(new List <Vector2>(MeshHelper.ConvertVec3ToVec2(Vertices)));
Triangles = new int[connections.Count * 3];
for (int i = 0; i < connections.Count; i++)
{
Triangles[i * 3 + 0] = connections[i].A;
Triangles[i * 3 + 1] = connections[i].B;
Triangles[i * 3 + 2] = connections[i].C;
}
UVs = MeshHelper.UVUnwrap(Vertices);
}
protected override void BuildMeshComponents()
{
List <Vector2> curvePoints = CatmullRomSpline.GetPoints(SplinePoints, Resolution, false);
if (MinArea.HasValue)
{
curvePoints = SplineSimplification.Simplify(curvePoints, MinArea.Value, true, false);
}
int len = curvePoints.Count;
if (len <= 1)
{
return;
}
List <Vector2> leftCurvePoints = new List <Vector2>();
List <Vector2> rightCurvePoints = new List <Vector2>();
// first vertex
{
Vector2 dir = (curvePoints[1] - curvePoints[0]).normalized;
dir = new Vector2(-dir.y, dir.x) * Width;
leftCurvePoints.Add(curvePoints[0] - dir);
rightCurvePoints.Add(curvePoints[0] + dir);
}
// second to last - 1 vertices
for (int i = 1; i < len - 1; i++)
{
float leftAngle = Mathf.Atan2(curvePoints[i].y - curvePoints[i - 1].y, curvePoints[i].x - curvePoints[i - 1].x) * Mathf.Rad2Deg + 90;
float rightAngle = Mathf.Atan2(curvePoints[i + 1].y - curvePoints[i].y, curvePoints[i + 1].x - curvePoints[i].x) * Mathf.Rad2Deg + 90;
float middleAngle = leftAngle + Mathf.DeltaAngle(leftAngle, rightAngle) * 0.5f;
Vector2 dir = new Vector2(Mathf.Cos(middleAngle * Mathf.Deg2Rad), Mathf.Sin(middleAngle * Mathf.Deg2Rad)) * Width;
leftCurvePoints.Add(curvePoints[i] - dir);
rightCurvePoints.Add(curvePoints[i] + dir);
}
// last vertex
{
Vector2 dir = (curvePoints[len - 2] - curvePoints[len - 1]).normalized;
dir = new Vector2(-dir.y, dir.x) * Width;
leftCurvePoints.Add(curvePoints[len - 1] + dir);
rightCurvePoints.Add(curvePoints[len - 1] - dir);
}
Vertices = new Vector3[leftCurvePoints.Count * 2];
for (int i = 0; i < leftCurvePoints.Count; i++)
{
Vertices[i * 2] = leftCurvePoints[i];
Vertices[i * 2 + 1] = rightCurvePoints[i];
}
Triangles = new int[(leftCurvePoints.Count - 1) * 6]; // number of quads * 6
int triangleIndex = 0;
for (int i = 0; i < leftCurvePoints.Count - 1; i++)
{
int ii = i * 2;
Triangles[triangleIndex++] = ii;
Triangles[triangleIndex++] = ii + 1;
Triangles[triangleIndex++] = ii + 3;
Triangles[triangleIndex++] = ii;
Triangles[triangleIndex++] = ii + 3;
Triangles[triangleIndex++] = ii + 2;
}
}