/// <summary>
///
/// </summary>
/// <param name="field"></param>
/// <param name="point"></param>
/// <param name="amount"></param>
public static void IncrementAt(this GridField2d <Vector2d> field, ref GridPoint2d point, Vector2d amount)
{
var vals = field.Values;
vals[point.Index0] += amount * point.Weight0;
vals[point.Index1] += amount * point.Weight1;
vals[point.Index2] += amount * point.Weight2;
vals[point.Index3] += amount * point.Weight3;
}
/// <summary>
///
/// </summary>
/// <param name="field"></param>
/// <param name="point"></param>
/// <param name="value"></param>
public static void SetAt(this GridField2d <Vector2d> field, ref GridPoint2d point, Vector2d value)
{
var vals = field.Values;
vals[point.Index0] += (value - vals[point.Index0]) * point.Weight0;
vals[point.Index1] += (value - vals[point.Index1]) * point.Weight1;
vals[point.Index2] += (value - vals[point.Index2]) * point.Weight2;
vals[point.Index3] += (value - vals[point.Index3]) * point.Weight3;
}
/// <inheritdoc />
public sealed override double ValueAt(ref GridPoint2d point)
{
var vals = Values;
return
(vals[point.Index0] * point.Weight0 +
vals[point.Index1] * point.Weight1 +
vals[point.Index2] * point.Weight2 +
vals[point.Index3] * point.Weight3);
}