public Terrain3D(float w, float h, float y, int xsegs, int ysegs, Texture.Texture2D tex)
{
float xr = tex.W / w;
float yr = tex.H / h;
byte[] data = tex.RawData;
tp = new Vector3 [xsegs, ysegs];
tuv = new Vector3 [xsegs, ysegs];
tnorm = new Vector3 [xsegs, ysegs];
tbi = new Vector3 [xsegs, ysegs];
tan = new Vector3 [xsegs, ysegs];
List <int> indices = new List <int>();
float vx = -w / 2.0f;
float vz = -h / 2.0f;
float vy = y;
float xi = w / xsegs;
float zi = h / ysegs;
float ui, vi;
ui = 0.1f;
vi = 0.1f;
float vu, vv;
vu = 0.0f;
vv = 0.0f;
for (int sy = 0; sy < ysegs; sy++)
{
for (int sx = 0; sx < xsegs; sx++)
{
float ny = 0.0f;
float ax = w / 2 + vx;
float ay = h / 2 + vz;
float tx = ax * xr;
float ty = ay * yr;
// int loc = (int)((float)ty * (float)tex.W * 3)+ (tx * 3);
int loc = (int)ty * (tex.W * 3);
loc += ( int )tx * 3;
ny = data [loc];
ny = ny * 3;
tp [sx, sy] = new Vector3(vx, vy + ny, vz);
tuv [sx, sy] = new Vector3(vu, vv, 0);
tnorm [sx, sy] = new Vector3(0, 1, 0);
vu += ui;
//vv += vi;
vx += xi;
}
vu = 0;
vv += vi;
vx = -w / 2.0f;
vz += zi;
}
for (int sy = 0; sy < ysegs - 1; sy++)
{
for (int sx = 0; sx < xsegs - 1; sx++)
{
indices.Add(GetI(sx, sy, xsegs, ysegs));
indices.Add(GetI(sx + 1, sy + 1, xsegs, ysegs));
indices.Add(GetI(sx + 1, sy, xsegs, ysegs));
indices.Add(GetI(sx + 1, sy + 1, xsegs, ysegs));
indices.Add(GetI(sx, sy, xsegs, ysegs));
indices.Add(GetI(sx, sy + 1, xsegs, ysegs));
}
}
TMesh = new Mesh3D(indices.Count, xsegs * ysegs);
int vid = 0;
for (int sy = 0; sy < ysegs; sy++)
{
for (int sx = 0; sx < xsegs; sx++)
{
TMesh.SetVertex(vid, tp [sx, sy], tan [sx, sy], tbi [sx, sy], tnorm [sx, sy], new Vector2(tuv [sx, sy].X, tuv [sx, sy].Y));
vid++;
}
}
uint[] mi = new uint[indices.Count];
for (int i = 0; i < indices.Count; i++)
{
mi [i] = ( uint )indices [i];
}
for (int i = 0; i < indices.Count / 3; i++)
{
TMesh.SetTri(i, indices [i * 3], indices [i * 3 + 1], indices [i * 3 + 2]);
}
TMesh.Indices = mi;
TMesh.Mat = new Material.Material3D( );
TMesh.GenerateTangents( );
TMesh.Final( );
Meshes.Add(TMesh);
Renderer = new Visuals.VRTerrain( );
Name = "Terrain";
}
private void GenFlat(float w, float h, float y, int xsegs, int ysegs)
{
tp = new Vector3 [xsegs, ysegs];
tuv = new Vector3 [xsegs, ysegs];
tnorm = new Vector3 [xsegs, ysegs];
tbi = new Vector3 [xsegs, ysegs];
tan = new Vector3 [xsegs, ysegs];
List <int> indices = new List <int>();
float vx = -w / 2.0f;
float vz = -h / 2.0f;
float vy = y;
float xi = w / xsegs;
float zi = h / ysegs;
float ui, vi;
ui = 0.1f;
vi = 0.1f;
float vu, vv;
vu = 0.0f;
vv = 0.0f;
for (int sy = 0; sy < ysegs; sy++)
{
for (int sx = 0; sx < xsegs; sx++)
{
tp [sx, sy] = new Vector3(vx, vy, vz);
tuv [sx, sy] = new Vector3(vu, vv, 0);
tnorm [sx, sy] = new Vector3(0, 1, 0);
vu += ui;
//vv += vi;
vx += xi;
}
vu = 0;
vv += vi;
vx = -w / 2.0f;
vz += zi;
}
for (int sy = 0; sy < ysegs - 1; sy++)
{
for (int sx = 0; sx < xsegs - 1; sx++)
{
indices.Add(GetI(sx, sy, xsegs, ysegs));
indices.Add(GetI(sx + 1, sy + 1, xsegs, ysegs));
indices.Add(GetI(sx + 1, sy, xsegs, ysegs));
indices.Add(GetI(sx + 1, sy + 1, xsegs, ysegs));
indices.Add(GetI(sx, sy, xsegs, ysegs));
indices.Add(GetI(sx, sy + 1, xsegs, ysegs));
}
}
TMesh = new Mesh3D(indices.Count, xsegs * ysegs);
int vid = 0;
for (int sy = 0; sy < ysegs; sy++)
{
for (int sx = 0; sx < xsegs; sx++)
{
TMesh.SetVertex(vid, tp [sx, sy], tan [sx, sy], tbi [sx, sy], tnorm [sx, sy], new Vector2(tuv [sx, sy].X, tuv [sx, sy].Y));
vid++;
}
}
uint[] mi = new uint[indices.Count];
for (int i = 0; i < indices.Count; i++)
{
mi [i] = ( uint )indices [i];
}
for (int i = 0; i < indices.Count / 3; i++)
{
TMesh.SetTri(i, indices [i * 3], indices [i * 3 + 1], indices [i * 3 + 2]);
}
TMesh.Indices = mi;
TMesh.Mat = new Material.Material3D( );
TMesh.GenerateTangents( );
TMesh.Final( );
Meshes.Add(TMesh);
Renderer = new Visuals.VRTerrain( );
Name = "Terrain";
}
