OpenSim
/
OpenSimMirror
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Update svn properties.

0.6.0-stable
Jeff Ames 2008-03-12 12:22:43 +00:00
parent 935e67a783
commit 43148ffc23
1 changed files with 51 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
OpenSim/Region/Environment/Modules/Terrain/TerrainUtil.cs
View File

@ -1,51 +1,51 @@
using System; using System;
using OpenSim.Region.Environment.Interfaces; using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.Terrain namespace OpenSim.Region.Environment.Modules.Terrain
{ {
public static class TerrainUtil public static class TerrainUtil
{ {
public static double MetersToSphericalStrength(double size) public static double MetersToSphericalStrength(double size)
{ {
return Math.Pow(2, size); return Math.Pow(2, size);
} }
public static double SphericalFactor(double x, double y, double rx, double ry, double size) public static double SphericalFactor(double x, double y, double rx, double ry, double size)
{ {
return size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry)); return size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry));
} }
public static double GetBilinearInterpolate(double x, double y, ITerrainChannel map) public static double GetBilinearInterpolate(double x, double y, ITerrainChannel map)
{ {
int w = map.Width; int w = map.Width;
int h = map.Height; int h = map.Height;
if (x > w - 2.0) if (x > w - 2.0)
x = w - 2.0; x = w - 2.0;
if (y > h - 2.0) if (y > h - 2.0)
y = h - 2.0; y = h - 2.0;
if (x < 0.0) if (x < 0.0)
x = 0.0; x = 0.0;
if (y < 0.0) if (y < 0.0)
y = 0.0; y = 0.0;
int stepSize = 1; int stepSize = 1;
double h00 = map[(int)x, (int)y]; double h00 = map[(int)x, (int)y];
double h10 = map[(int)x + stepSize, (int)y]; double h10 = map[(int)x + stepSize, (int)y];
double h01 = map[(int)x, (int)y + stepSize]; double h01 = map[(int)x, (int)y + stepSize];
double h11 = map[(int)x + stepSize, (int)y + stepSize]; double h11 = map[(int)x + stepSize, (int)y + stepSize];
double h1 = h00; double h1 = h00;
double h2 = h10; double h2 = h10;
double h3 = h01; double h3 = h01;
double h4 = h11; double h4 = h11;
double a00 = h1; double a00 = h1;
double a10 = h2 - h1; double a10 = h2 - h1;
double a01 = h3 - h1; double a01 = h3 - h1;
double a11 = h1 - h2 - h3 + h4; double a11 = h1 - h2 - h3 + h4;
double partialx = x - (int)x; double partialx = x - (int)x;
double partialz = y - (int)y; double partialz = y - (int)y;
double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz); double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz);
return hi; return hi;
} }
} }
} }