// This will return the local terrain height at the given local position
public float GetSurfaceHeightLocal(Vector3 localPosition)
{
var uv = SgtHelper.CartesianToPolarUV(localPosition);
var color = SampleBilinear(uv);
var height01 = default(float);
switch (Encoding)
{
case EncodingType.Alpha:
{
height01 = color.a;
}
break;
case EncodingType.RedGreen:
{
height01 = (color.r * 255.0f + color.g) / 256.0f;
}
break;
}
if (ZeroCutoff == true)
{
height01 = Mathf.InverseLerp(HeightmapCutoff, 1.0f, height01);
}
else
{
height01 = Mathf.Max(height01, HeightmapCutoff);
}
return(Mathf.Lerp(InnerRadius, OuterRadius, height01));
}
private void CalculateHeight(SgtVector3D localPosition, ref double height)
{
if (Heightmap != null)
{
var uv = SgtHelper.CartesianToPolarUV((Vector3)localPosition);
var color = SampleBilinear(uv);
var height01 = default(double);
switch (Encoding)
{
case EncodingType.Alpha:
{
height01 = color.a;
}
break;
case EncodingType.RedGreen:
{
height01 = (color.r * 255.0 + color.g) / 256.0;
}
break;
}
height += DisplacementMin + (DisplacementMax - DisplacementMin) * height01;
}
}
private float Sample(Vector3 vector)
{
var final = radius;
if (displace == true && lastHeightmap != null)
{
var uv = SgtHelper.CartesianToPolarUV(vector);
var land = lastHeightmap.GetPixelBilinear(uv.x, uv.y).a;
if (clampWater == true)
{
final += displacement * Mathf.InverseLerp(Mathf.Clamp01(waterLevel), 1.0f, land);
}
else
{
final += displacement * Mathf.Max(land, waterLevel);
}
}
return(final);
}
private int GetCount(double3 point)
{
var weight = 1.0f;
if (splat != null)
{
var uv = SgtHelper.CartesianToPolarUV((float3)point);
var pixel = splat.GetPixelBilinear(uv.x, uv.y);
switch (channel)
{
case ChannelType.Red: weight = pixel.r; break;
case ChannelType.Green: weight = pixel.g; break;
case ChannelType.Blue: weight = pixel.b; break;
case ChannelType.Alpha: weight = pixel.a; break;
}
}
return(Mathf.RoundToInt(count * weight));
}
