public float GetBilinear(Common.Painter.GridManagerInt gridManager, Vector3 position)
{
var gridSize = gridManager.GetGridSize();
var xDiff = Mathf.Abs(position.x) % gridSize;
var zDiff = Mathf.Abs(position.z) % gridSize;
var xSign = Mathf.Sign(position.x);
if (xDiff < gridSize / 2f)
{
xSign *= -1;
}
var zSign = Mathf.Sign(position.z);
if (zDiff < gridSize / 2f)
{
zSign *= -1;
}
var xOffset = new Vector2(gridSize, 0) * xSign;
var zOffset = new Vector2(0, gridSize) * zSign;
var p0 = gridManager.GetCellCenter(position);
var p1 = p0 + xOffset;
var p2 = p0 + zOffset;
var p3 = p0 + xOffset + zOffset;
var v0 = GetValue(gridManager.GetCell(p0.x0z()));
var v1 = GetValue(gridManager.GetCell(p1.x0z()));
var v2 = GetValue(gridManager.GetCell(p2.x0z()));
var v3 = GetValue(gridManager.GetCell(p3.x0z()));
var total = gridSize * gridSize;
var w0 = ((gridSize - Mathf.Abs(position.x - p0.x)) * (gridSize - Mathf.Abs(position.z - p0.y))) / total;
var w1 = ((gridSize - Mathf.Abs(position.x - p1.x)) * (gridSize - Mathf.Abs(position.z - p1.y))) / total;
var w2 = ((gridSize - Mathf.Abs(position.x - p2.x)) * (gridSize - Mathf.Abs(position.z - p2.y))) / total;
var w3 = ((gridSize - Mathf.Abs(position.x - p3.x)) * (gridSize - Mathf.Abs(position.z - p3.y))) / total;
return(w0 * v0 + w1 * v1 + w2 * v2 + w3 * v3);
}
public void Invalidate(Serializable2DFloatArray heights,
Func <Vector3> displaySizeGetter,
Func <Vector3> positionGetter,
Func <Vector3> scaleGetter,
Func <Quaternion> rotationGetter,
Func <Vector3> dataSizeGetter, bool flipHeights,
WorldStampMask mask, Common.Painter.GridManagerInt gridManager,
Func <bool> existenceHook, int res)
{
_dataSize = dataSizeGetter;
_displaySize = displaySizeGetter;
_existenceHook = existenceHook;
_position = positionGetter;
_scale = scaleGetter;
_rotation = rotationGetter;
if (_mesh == null)
{
_mesh = new Mesh();
}
if (_material == null)
{
_material = Resources.Load <Material>("MadMaps/WorldStamp/WorldStampPreviewMaterial");
}
var verts = new Vector3[(res + 1) * (res + 1)];
var uv = new Vector2[verts.Length];
var colors = new Color[verts.Length];
int counter = 0;
var dataSize = dataSizeGetter();
for (int u = 0; u <= res; u++)
{
var uF = u / (float)res;
for (int v = 0; v <= res; v++)
{
var vF = v / (float)res;
var samplePoint = flipHeights ? new Vector2(uF, vF) : new Vector2(vF, uF);
var height = heights.BilinearSample(samplePoint);
var pos = new Vector3(uF * dataSize.x, height * dataSize.y, vF * dataSize.z) - dataSize.xz().x0z() / 2;
float val = 1;
if (mask != null && gridManager != null)
{
val = mask.GetBilinear(gridManager, new Vector3(pos.x, 0, pos.z) + dataSize.xz().x0z() / 2);
pos.y *= val;
}
verts[counter] = pos;
uv[counter] = new Vector2(uF, vF);
colors[counter] = Color.Lerp(Color.clear, Color.white, val);
counter++;
}
}
_mesh.vertices = verts;
_mesh.uv = uv;
_mesh.colors = colors;
var tris = new int[((res + 1) * (res)) * 6];
for (var i = 0; i < tris.Length; i += 6)
{
var vIndex = i / 6;
var t1 = vIndex + 0;
var t2 = vIndex + 1;
var t3 = vIndex + 2 + (res - 1);
var t1r = t1 / (res + 1);
var t2r = t2 / (res + 1);
var t3r = (t3 / (res + 1)) - 1;
if (t1r == t2r && t2r == t3r && t3r == t1r)
{
tris[i + 0] = t1;
tris[i + 1] = t2;
tris[i + 2] = t3;
}
var t4 = vIndex + 2 + (res - 1);
var t5 = vIndex + 1 + (res - 1);
var t6 = vIndex + 0;
var t4r = (t4 / (res + 1)) - 1;
var t5r = (t5 / (res + 1)) - 1;
var t6r = t6 / (res + 1);
if (t4r == t5r && t5r == t6r && t6r == t4r)
{
tris[i + 3] = t4;
tris[i + 4] = t5;
tris[i + 5] = t6;
}
}
_mesh.triangles = tris;
_mesh.RecalculateNormals(0);
_mesh.RecalculateBounds();
#if UNITY_EDITOR
UnityEditor.SceneView.onSceneGUIDelegate -= OnSceneGUIDelegate;
UnityEditor.SceneView.onSceneGUIDelegate += OnSceneGUIDelegate;
#endif
}