public static void GenerateVectors([In][IsReadOnly] ref int size, [In][IsReadOnly] ref float[] distanceField, ref Vector2[] vectorField)
{
for (int i = 1; i < size - 1; i++)
{
for (int j = 1; j < size - 1; j++)
{
float single = DistanceField.SampleClamped(distanceField, size, i - 1, j - 1);
float single1 = DistanceField.SampleClamped(distanceField, size, i - 1, j);
float single2 = DistanceField.SampleClamped(distanceField, size, i - 1, j + 1);
float single3 = DistanceField.SampleClamped(distanceField, size, i, j - 1);
float single4 = DistanceField.SampleClamped(distanceField, size, i, j + 1);
float single5 = DistanceField.SampleClamped(distanceField, size, i + 1, j - 1);
float single6 = DistanceField.SampleClamped(distanceField, size, i + 1, j);
float single7 = DistanceField.SampleClamped(distanceField, size, i + 1, j + 1);
float single8 = single2 + 2f * single4 + single7 - (single + 2f * single3 + single5);
Vector2 vector2 = new Vector2(-(single5 + 2f * single6 + single7 - (single + 2f * single1 + single2)), -single8);
Vector2 vector21 = vector2.normalized;
vectorField[j * size + i] = new Vector2(vector21.x, vector21.y);
}
}
for (int k = 1; k < size - 1; k++)
{
vectorField[k] = DistanceField.SampleClamped(vectorField, size, k, 1);
vectorField[(size - 1) * size + k] = DistanceField.SampleClamped(vectorField, size, k, size - 2);
}
for (int l = 0; l < size; l++)
{
vectorField[l * size] = DistanceField.SampleClamped(vectorField, size, 1, l);
vectorField[l * size + size - 1] = DistanceField.SampleClamped(vectorField, size, size - 2, l);
}
}