private SgtTerrainFace Create(string childName, SgtVector3D cornerBL, SgtVector3D cornerBR, SgtVector3D cornerTL, SgtVector3D cornerTR, SgtVector2D coordBL, SgtVector2D coordBR, SgtVector2D coordTL, SgtVector2D coordTR)
{
var face = Create(childName, gameObject.layer, transform);
face.State = StateType.Invalid;
face.Terrain = Terrain;
face.Side = Side;
face.Depth = Depth + 1;
face.CornerBL = cornerBL;
face.CornerBR = cornerBR;
face.CornerTL = cornerTL;
face.CornerTR = cornerTR;
face.CoordBL = coordBL;
face.CoordBR = coordBR;
face.CoordTL = coordTL;
face.CoordTR = coordTR;
return(face);
}
public void BuildData()
{
var verts = (2 << Terrain.Subdivisions) + 1;
var step = 1.0 / (verts - 1);
var cornerU = (CornerBR - CornerBL) * step;
var cornerV = (CornerTL - CornerBL) * step;
var cornerS = SgtVector3D.Cross(cornerU, cornerV).normalized *cornerU.magnitude;
var coordU = (CoordBR - CoordBL) * step;
var coordV = (CoordTL - CoordBL) * step;
ValidateVertices();
Bounds.Clear();
for (var y = 0; y < verts; y++)
{
var cubeY = CornerBL + cornerV * y;
for (var x = 0; x < verts; x++)
{
var cube = cubeY + cornerU * x;
var normal = cube.normalized;
var height = Terrain.GetLocalHeight(normal);
var position = normal * height;
Bounds.Add(position);
//if (WriteVertex(x, y) == true)
{
var index = x + y * verts;
var coord1 = CoordBL + coordU * x + coordV * y;
var coord2 = new SgtVector2D(x * step, y * step);
var tangent = default(SgtVector3D);
var color = Color.white;
tangent = SgtVector3D.Cross(normal, cornerU).normalized;
if (Terrain.OnCalculateColor != null)
{
Terrain.OnCalculateColor(position, height, ref color);
}
positions[index] = position;
vertices[index] = (Vector3)position;
coords1[index] = (Vector2)coord1;
coords2[index] = (Vector2)coord2;
colors[index] = color;
}
}
}
if (Terrain.Normals == SgtTerrain.NormalsType.Normalized)
{
for (var y = 0; y < verts; y++)
{
var cubeY = CornerBL + cornerV * y;
for (var x = 0; x < verts; x++)
{
var index = x + y * verts;
var cubeA = cubeY + cornerU * x;
var cubeB = GetPosition(cubeA, cornerU, cornerS);
var normal = cubeA.normalized;
var tangent = (Vector3)(cubeB.normalized - normal).normalized;
normals1[index] = (Vector3)normal;
tangents1[index] = new Vector4(tangent.x, tangent.y, tangent.z, -1.0f);
}
}
}
if (Terrain.Normals == SgtTerrain.NormalsType.Hierarchical)
{
for (var y = 0; y < verts; y++)
{
var cubeY = CornerBL + cornerV * y;
for (var x = 0; x < verts; x++)
{
var index = x + y * verts;
var cube = cubeY + cornerU * x;
// Get position from vertex or recalc off edge
var positionL = x == 0 ? GetPosition(cube, -cornerU, cornerS) : positions[index - 1];
var positionR = x == verts - 1 ? GetPosition(cube, cornerU, cornerS) : positions[index + 1];
var positionB = y == 0 ? GetPosition(cube, -cornerV, cornerS) : positions[index - verts];
var positionT = y == verts - 1 ? GetPosition(cube, cornerV, cornerS) : positions[index + verts];
// Calc normal and tangent
var positionH = positionR - positionL;
var positionV = positionT - positionB;
var normal = SgtVector3D.Cross(positionV, positionH).normalized;
var tangent = (Vector3)positionH.normalized;
normals1[index] = normals2[index] = (Vector3)normal;
tangents1[index] = tangents2[index] = new Vector4(tangent.x, tangent.y, tangent.z, -1.0f);
}
}
}
if (Terrain.OnPostProcessVertices != null)
{
Terrain.OnPostProcessVertices(this);
}
if (Split == true)
{
CopyVertiesToChildren();
}
}