TerrainVertex GainVertex(int X, int Y, int DX, int DY, int Seed = 0)
{
TerrainVertex v = new TerrainVertex();
float One32nd = 1.0f / 64.0f;
v.Position.X = X;
v.Position.Z = Y;
int MapX = X + DX * (BlockSize);
int MapY = Y + DY * (BlockSize);
// Z = 0;
// v.Position.Y= noise.PerlinNoise3F(MapX, MapY, Z, 1, One32nd / 1, One32nd / 1, One32nd / 1);
//*
// v.Position.Y *= 10;
//v.Position.Y += 6;
// v.Position.Y *= 10;
float to256 = 1 / 256;
float H = 0.0f;
Simplex.Seed = this.Seed;
MapY += 65535;
MapX += 65535;
//land/water scaling
H = Simplex.CalcPixel2D(MapX, MapY, 1f / 16384f) - 35f;
//values from -35 to 220ish.
H += (Simplex.CalcPixel2D(MapX, MapY, 1f / 256) / 16);
//+-16 variation, values -51..246
float Hills = Simplex.CalcPixel2D(MapX, MapY, 1f / 256) - 128;
Hills /= 16;
//+-8 noise
//*/
v.Position.Y = H;
float Temp = Simplex.CalcPixel2D(MapX, MapY, 1f / 4024f);
//0 to 255 temp
int Blend1 = Math.Min((int)(Temp * 2), 160);
int Blend2 = Math.Min((510 - (int)(Temp * 2)), 200);
Color grass = new Color(Blend1, Blend2, 0);
Color sea = new Color(0, 50, 255);
Color Snow = new Color(245, 245, 255);
Color sand = new Color(200, 200, 100);
Color sand2 = new Color(150, 150, 50);
sea = sand;
v.Color = grass;
// v.Color =
float BeachRange = 12;
float SnowRange = 185;
float GroundBaseline = WaterHeight + BeachRange;
if (H < WaterHeight)
{
v.MultiTexData.Z = 1;
v.Color = sea;
}
if (H > WaterHeight && H < GroundBaseline)
{
float dif = H - WaterHeight;
dif /= BeachRange;
dif = (float)Math.Pow(dif, 7.3);
v.Position.Y = WaterHeight + dif * BeachRange;
v.Color = sand;
v.MultiTexData.Z = 1;
}
if (H > GroundBaseline)
{
unchecked
{
Simplex.Seed = Simplex.Seed ^ (int)0xFFFFFFFF;
}
//hill horizontal scale
float random1 = Simplex.CalcPixel2D(MapX + 1112, MapY + 13123, 2f) / 512f;
float random2 = Simplex.CalcPixel2D(MapX + 1112, MapY + 13123, 1f) / 1024f;
float ground = Simplex.CalcPixel2D(MapX + 1112, MapY + 13123, 0.0006125f / 1f);
float beachdist = H - GroundBaseline;
float evenness = 16f;
ground /= 256f;
ground = (float)(Math.Pow(ground, 4.4));
ground *= 256f;
beachdist /= evenness;
beachdist = MathHelper.Clamp(beachdist, 0.0f, 1.0f);
float finalground = GroundBaseline + ground * beachdist + Hills * beachdist + (random1 + random2) * beachdist;
v.Position.Y = finalground;// + random1 + random2;
v.MultiTexData.Z = (float)Math.Pow((float)MathHelper.Clamp((((Temp / 2f) - finalground + 76f) / 100f), 0f, 1f), 3f);
if (v.MultiTexData.Z < 0.2f)
{
v.MultiTexData.Z = 0f;
}
if (finalground > SnowRange)
{
v.Color = Snow;
v.MultiTexData.Z = 0.20f;
}
}
// v.Color = new Color(Math.Min(255, (int)H), 0, 0);
v.TextureCoordinate.X = X / 4f;
v.TextureCoordinate.Y = Y / 4f;
v.Normal = new Vector3(0, 0, 0);
// v.Position.Y = 6;
return(v);
}