private void UpdateMesh()
{
if (Segments > 0 && SegmentDetail > 0 && RadiusDetail > 0)
{
if (generatedMesh == null)
{
generatedMesh = SgtHelper.CreateTempMesh("Ring Mesh (Generated)");
ApplyMesh();
}
var slices = SegmentDetail + 1;
var rings = RadiusDetail + 1;
var total = slices * rings * 2;
var positions = new Vector3[total];
var coords1 = new Vector2[total];
var coords2 = new Vector2[total];
var colors = new Color[total];
var indices = new int[SegmentDetail * RadiusDetail * 6];
var yawStep = (Mathf.PI * 2.0f) / Segments / SegmentDetail;
var sliceStep = 1.0f / SegmentDetail;
var ringStep = 1.0f / RadiusDetail;
for (var slice = 0; slice < slices; slice++)
{
var a = yawStep * slice;
var x = Mathf.Sin(a);
var z = Mathf.Cos(a);
for (var ring = 0; ring < rings; ring++)
{
var v = rings * slice + ring;
var slice01 = sliceStep * slice;
var ring01 = ringStep * ring;
var radius = Mathf.Lerp(RadiusMin, RadiusMax, ring01);
positions[v] = new Vector3(x * radius, 0.0f, z * radius);
colors[v] = new Color(1.0f, 1.0f, 1.0f, 0.0f);
coords1[v] = new Vector2(ring01, slice01);
coords2[v] = new Vector2(radius, slice01 * radius);
}
}
for (var slice = 0; slice < SegmentDetail; slice++)
{
for (var ring = 0; ring < RadiusDetail; ring++)
{
var i = (slice * RadiusDetail + ring) * 6;
var v0 = slice * rings + ring;
var v1 = v0 + rings;
indices[i + 0] = v0 + 0;
indices[i + 1] = v0 + 1;
indices[i + 2] = v1 + 0;
indices[i + 3] = v1 + 1;
indices[i + 4] = v1 + 0;
indices[i + 5] = v0 + 1;
}
}
generatedMesh.Clear(false);
generatedMesh.vertices = positions;
generatedMesh.colors = colors;
generatedMesh.uv = coords1;
generatedMesh.uv2 = coords2;
generatedMesh.triangles = indices;
generatedMesh.RecalculateNormals();
generatedMesh.RecalculateBounds();
var bounds = generatedMesh.bounds;
generatedMesh.bounds = SgtHelper.NewBoundsCenter(bounds, bounds.center + bounds.center.normalized * BoundsShift);
}
if (Shadow != null)
{
Shadow.RadiusMin = RadiusMin;
Shadow.RadiusMax = RadiusMax;
}
ApplyMesh();
}
