// GetPixelHeightAlpha - Float
public override HeightAlpha GetPixelHeightAlpha(float x, float y)
{
if (!IsLoaded)
{
if (OnDemandStorage.onDemandLogOnMissing)
{
Debug.Log("[OD] ERROR: getting pixelHeightAlphaF with unloaded map " + name + " of path " + Path + ", autoload = " + AutoLoad);
}
if (AutoLoad)
{
Load();
}
else
{
return(new HeightAlpha(0f, 0f));
}
}
BilinearCoords coords = ConstructBilinearCoords(x, y);
return(HeightAlpha.Lerp(
HeightAlpha.Lerp(
GetPixelHeightAlpha(coords.xFloor, coords.yFloor),
GetPixelHeightAlpha(coords.xCeiling, coords.yFloor),
coords.u),
HeightAlpha.Lerp(
GetPixelHeightAlpha(coords.xFloor, coords.yCeiling),
GetPixelHeightAlpha(coords.xFloor, coords.yCeiling),
coords.u),
coords.v));
}
/// GetPixelHeightAlpha - Float
public HeightAlpha GetPixelHeightAlpha(Single x, Single y)
{
BilinearCoords coords = ConstructBilinearCoords(x, y);
return(HeightAlpha.Lerp(
HeightAlpha.Lerp(
GetPixelHeightAlpha(coords.xFloor, coords.yFloor),
GetPixelHeightAlpha(coords.xCeiling, coords.yFloor),
coords.u),
HeightAlpha.Lerp(
GetPixelHeightAlpha(coords.xFloor, coords.yCeiling),
GetPixelHeightAlpha(coords.xFloor, coords.yCeiling),
coords.u),
coords.v));
}
/// <summary>
/// Lerps two HeightAlphas
/// </summary>
/// <returns></returns>
public static HeightAlpha Lerp(HeightAlpha a, HeightAlpha b, Single dt)
{
return(new HeightAlpha(a.height + (b.height - a.height) * dt, a.alpha + (b.alpha - a.alpha) * dt));
}
