private IEnumerator SubdivideSegment(SegmentData d)
{
// Find the 5 points that split this quad into 4 more.
var top = (d.topLeft + d.topRight) / 2f;
var right = (d.topRight + d.bottomRight) / 2f;
var bottom = (d.bottomLeft + d.bottomRight) / 2f;
var left = (d.topLeft + d.bottomLeft) / 2f;
var mid = (d.topLeft + d.bottomRight) / 2f;
// Define the 4 new quads using existing and new points.
var segCorners = new Vector3[][] {
new Vector3[] { d.topLeft, top, left, mid },
new Vector3[] { top, d.topRight, mid, right },
new Vector3[] { left, mid, d.bottomLeft, bottom },
new Vector3[] { mid, right, bottom, d.bottomRight }
};
var uCenter = new Vector2((d.uvMin.x + d.uvMax.x) / 2f, (d.uvMin.y + d.uvMax.y) / 2f);
var uTop = new Vector2(uCenter.x, d.uvMin.y);
var uLeft = new Vector2(d.uvMin.x, uCenter.y);
var uRight = new Vector2(d.uvMax.x, uLeft.y);
var uBottom = new Vector2(uCenter.x, d.uvMax.y);
var uvCorners = new Vector2[][] {
new Vector2[] { d.uvMin, uCenter },
new Vector2[] { uTop, uRight },
new Vector2[] { uLeft, uBottom },
new Vector2[] { uCenter, d.uvMax }
};
for (var i = 0; i < segCorners.Length; i++)
{
var d2 = d.subdivCopy(segCorners[i], uvCorners[i]);
var go = new GameObject(); var tr = go.GetComponent <Transform>();
tr.parent = transform; tr.localPosition = Vector3.zero;
tr.localRotation = Quaternion.identity; tr.localScale = new Vector3(1f, 1f, 1f);
var seg = go.AddComponent <PlanetTerrainSegment>();
segments.Add(seg);
if (Application.isPlaying)
{
yield return(StartCoroutine(seg.Generate(d2)));
}
else
{
IEnumerator e = seg.Generate(d2);
while (e.MoveNext())
{
;
}
}
}
for (var i = 0; i < segments.Count; i++)
{
segments[i].Enable();
}
if (p.minSubdivisions - d.subdivision <= 0)
{
if (mr.enabled)
{
mr.enabled = false;
PTHelpers.segmentCount--;
}
if (mc != null)
{
mc.enabled = false;
}
}
}
