public void Unload(long dataX, long dataZ)
{
Data2D data = data2D[dataX][dataZ];
if (data.IsLoaded)
{
data.Unload();
}
}
public void Load(long dataX, long dataZ)
{
Data2D data = data2D[dataX][dataZ];
if (!data.IsLoaded)
{
data.Load(dataX, dataZ);
}
}
public Vector3 GetNormalAt(long dataX, long dataZ, float x, float z)
{
Data2D data = data2D[dataX][dataZ];
if (data.IsLoaded)
{
#if !_LOADEDNORM
return(data.GetNormalAt(x, z));
#else
{
// First General method : (9 adds and 6 muls + a normalization)
// *---v3--*
// | | |
// | | |
// v1--X--v2
// | | |
// | | |
// *---v4--*
//
// U = v2 - v1;
// V = v4 - v3;
// N = Cross(U, V);
// N.normalise;
//
// BUT IN CASE OF A HEIGHTMAP :
//
// if you do some math by hand before you code,
// you can see that N is immediately given by
// Approximation (2 adds and a normalization)
//
// N = Vector3(z[x-1][y] - z[x+1][y], z[x][y-1] - z[x][y+1], 2);
// N.normalise();
//
// or even using SOBEL operator VERY accurate!
// (14 adds and a normalization)
//
// N = Vector3 (z[x-1][y-1] + z[x-1][y] + z[x-1][y] + z[x-1][y+1] - z[x+1][y-1] - z[x+1][y] - z[x+1][y] - z[x+1][y+1],
// z[x-1][y-1] + z[x][y-1] + z[x][y-1] + z[x+1][y-1] - z[x-1][y+1] - z[x][y+1] - z[x][y+1] - z[x+1][y+1],
// 8);
// N.normalize();
// Fast SOBEL filter
Vector3 result = new Vector3
(this.GetHeightAtPage(dataX, dataZ, x - 1.0F, z) - this.GetHeightAtPage(dataX, dataZ, x + 1.0F, z),
2.0f,
this.GetHeightAtPage(dataX, dataZ, x, z - 1.0F) - this.GetHeightAtPage(dataX, dataZ, x, z + 1.0F));
result.Normalize();
return(result);
}
#endif
}
return(Vector3.UnitY);
}
public ColorEx GetBaseAt(long dataX, long dataZ, float x, float z)
{
Data2D data = data2D[dataX][dataZ];
if (data.IsLoaded)
{
return(data.GetBase(x, z));
}
return(ColorEx.White);
}
//This function will return the max possible value of height base on the current 2D Data implementation
public float GetMaxHeight(long x, long z)
{
Data2D data = data2D[x][z];
if (data.IsLoaded)
{
return(data2D[x][z].MaxHeight);
}
return(maxHeight);
}
public float GetHeight(long dataX, long dataZ, long x, long z)
{
Data2D data = data2D[dataX][dataZ];
if (data.IsLoaded)
{
return(data.GetHeight(x, z));
}
return(0.0f);
}
public void DeformHeight(Vector3 deformationPoint, float modificationHeight, TileInfo info)
{
long pSize = Options.Instance.PageSize;
long pX = info.PageX;
long pZ = info.PageZ;
long wL = Options.Instance.World_Width;
long hL = Options.Instance.World_Height;
// adjust x and z to be local to page
long x = (long)((deformationPoint.x) - ((pX - wL * 0.5f) * (pSize)));
long z = (long)((deformationPoint.z) - ((pZ - hL * 0.5f) * (pSize)));
Data2D data = data2D[pX][pZ];
if (data.IsLoaded)
{
float h = data.DeformHeight(x, z, modificationHeight);
// If we're on a page edge, we must duplicate the change on the
// neighbour page (if it has one...)
if (x == 0 && pX != 0)
{
data = data2D[pX - 1][pZ];
if (data.IsLoaded)
{
data.SetHeight(Options.Instance.PageSize - 1, z, h);
}
}
if (x == pSize - 1 && pX < wL - 1)
{
data = data2D[pX + 1][pZ];
if (data.IsLoaded)
{
data.SetHeight(0, z, h);
}
}
if (z == 0 && pZ != 0)
{
data = data2D[pX][pZ - 1];
if (data.IsLoaded)
{
data.SetHeight(x, Options.Instance.PageSize - 1, h);
}
}
if (z == pSize - 1 && pZ < hL - 1)
{
data = data2D[pX][pZ + 1];
if (data.IsLoaded)
{
data.SetHeight(x, 0, h);
}
}
}
}
public Data2D GetData2D(long x, long z)
{
Data2D data = data2D[x][z];
return((data.IsLoaded)? data: null);
}
public float GetRealPageHeight(float x, float z, long pageX, long pageZ, long Lod)
{
// scale position from world to page scale
float localX = x / Options.Instance.Scale.x;
float localZ = z / Options.Instance.Scale.z;
// adjust x and z to be local to page
long pSize = Options.Instance.PageSize - 1;
localX -= (float)(pageX - Options.Instance.World_Width * 0.5f) * pSize;
localZ -= (float)(pageZ - Options.Instance.World_Height * 0.5f) * pSize;
// make sure x and z do not go outside the world boundaries
if (localX < 0)
{
localX = 0;
}
else if (localX > pSize)
{
localX = pSize;
}
if (localZ < 0)
{
localZ = 0;
}
else if (localZ > pSize)
{
localZ = pSize;
}
// find the 4 vertices that surround the point
// use LOD info to determine vertex spacing - this is passed into the method
// determine vertices on left and right of point and top and bottom
// don't access VBO since a big performance hit when only 4 vertices are needed
int vertex_spread = 1 << (int)Lod;
// find the vertex to the bottom left of the point
int bottom_left_x = ((int)(localX / vertex_spread)) * vertex_spread;
int bottom_left_z = ((int)(localZ / vertex_spread)) * vertex_spread;
// find the 4 heights around the point
Data2D data = data2D[pageX][pageZ];
float bottom_left_y = data.GetHeight(bottom_left_x, bottom_left_z);
float bottom_right_y = data.GetHeight(bottom_left_x + vertex_spread, bottom_left_z);
float top_left_y = data.GetHeight(bottom_left_x, bottom_left_z + vertex_spread);
float top_right_y = data.GetHeight(bottom_left_x + vertex_spread, bottom_left_z + vertex_spread);
float x_pct = (localX - (float)bottom_left_x) / (float)vertex_spread;
float z_pct = (localZ - (float)bottom_left_z) / (float)vertex_spread;
//bilinear interpolate to find the height.
// figure out which 3 vertices are closest to the point and use those to form triangle plane for intersection
// Triangle strip has diagonal going from bottom left to top right
if ((x_pct - z_pct) >= 0)
{
return((bottom_left_y + (bottom_right_y - bottom_left_y) * x_pct + (top_right_y - bottom_right_y) * z_pct));
}
else
{
return((top_left_y + (top_right_y - top_left_y) * x_pct + (bottom_left_y - top_left_y) * (1 - z_pct)));
}
}
public float GetHeightAtPage(long dataX, long dataZ, int x, int z)
{
Data2D data = data2D[dataX][dataZ];
if (data.IsLoaded)
{
int lX = x;
int lZ = z;
int pSize = (int)Options.Instance.PageSize;
//check if we have to change current page
if (lX < 0)
{
if (dataX == 0)
{
lX = 0;
}
else
{
data = data2D[dataX - 1][dataZ];
if (data.IsLoaded)
{
lX = pSize;
}
else
{
lX = 0;
data = data2D[dataX][dataZ];
}
}
}
else if (lX > pSize)
{
if (dataX == Options.Instance.World_Width)
{
lX = pSize;
}
else
{
data = data2D[dataX + 1][dataZ];
if (data.IsLoaded)
{
lX = 0;
}
else
{
lX = pSize;
data = data2D[dataX][dataZ];
}
}
}
if (lZ < 0)
{
if (dataZ == 0)
{
lZ = 0;
}
else
{
data = data2D[dataX][dataZ - 1];
if (data.IsLoaded)
{
lZ = pSize;
}
else
{
lZ = 0;
data = data2D[dataX][dataZ];
}
}
}
else if (lZ > pSize)
{
if (dataZ == Options.Instance.World_Height)
{
lZ = pSize;
}
else
{
data = data2D[dataX][dataZ + 1];
if (data.IsLoaded)
{
lZ = 0;
}
else
{
lZ = pSize;
data = data2D[dataX][dataZ];
}
}
}
return(data.GetHeight(x, z));
}
return(0.0f);
}
public float GetHeightAtPage(long dataX, long dataZ, float x, float z)
{
Data2D data = null;
float lX = x;
float lZ = z;
float pSize = Options.Instance.PageSize;
//check if we have to change current page
if (lX < 0.0f)
{
if (dataX == 0)
{
lX = 0.0f;
}
else
{
data = data2D[dataX - 1][dataZ];
if (data.IsLoaded)
{
lX = (float)(pSize - 1);
}
else
{
lX = 0.0f;
data = data2D[dataX][dataZ];
}
}
}
else if (lX > pSize)
{
if (dataX == Options.Instance.World_Width - 1)
{
lX = (float)(pSize);
}
else
{
data = data2D[dataX + 1][dataZ];
if (data.IsLoaded)
{
lX = 0.0f;
}
else
{
lX = (float)(pSize);
data = data2D[dataX][dataZ];
}
}
}
if (lZ < 0.0f)
{
if (dataZ == 0)
{
lZ = 0.0f;
}
else
{
data = data2D[dataX][dataZ - 1];
if (data.IsLoaded)
{
lZ = (float)(pSize);
}
else
{
lZ = 0.0f;
data = data2D[dataX][dataZ];
}
}
}
else if (lZ > pSize)
{
if (dataZ == Options.Instance.World_Height - 1)
{
lZ = (float)(pSize);
}
else
{
data = data2D[dataX][dataZ + 1];
if (data.IsLoaded)
{
lZ = 0.0f;
}
else
{
lZ = (float)(pSize);
data = data2D[dataX][dataZ];
}
}
}
if (data == null)
{
data = data2D[dataX][dataZ];
}
if (data.IsLoaded)
{
return(data.GetHeight(lX, lZ));
}
return(0.0f);
}
