public static void Corrupt(BSP me, CorruptionMode mode, CorruptionValue values, double range, double percentage)
{
if (percentage == 0.0)
{
return;
}
if (mode == CorruptionMode.RANDOM)
{
RandomCorruption(me, values, range, percentage);
}
else
{
ReplacingCorruption(me, values, range, percentage);
}
}
public static void RandomCorruption(BSP me, CorruptionValue values, double range, double percentage)
{
Random rand = new Random();
foreach (Vertex v in me.Vertices)
{
for (int i = 0; i < 3; i++)
{
double probability = rand.NextDouble();
if (probability < percentage)
{
if (values == CorruptionValue.ZERO)
{
v[i] = 0.0;
}
else if (values == CorruptionValue.RELATIVE)
{
v[i] += (rand.NextDouble() * 2.0 * range) - range;
}
else
{
v[i] = (rand.NextDouble() * 2.0 * range) - range;
}
}
}
}
foreach (Plane p in me.Planes)
{
double probability = rand.NextDouble();
if (probability < percentage)
{
if (values == CorruptionValue.ZERO)
{
p.Dist = 0.0;
}
else if (values == CorruptionValue.RELATIVE)
{
p.Dist += (rand.NextDouble() * 2.0 * range) - range;
}
else
{
p.Dist = (rand.NextDouble() * 2.0 * range) - range;
}
}
}
}
public static void ReplacingCorruption(BSP me, CorruptionValue values, double range, double percentage)
{
Random rand = new Random();
// Populate a list with all possible values to be replaced
List <double> valuesToReplace = new List <double>();
foreach (Vertex v in me.Vertices)
{
for (int i = 0; i < 2; i++)
{
if (!valuesToReplace.Contains(v[i]))
{
valuesToReplace.Add(v[i]);
}
}
}
foreach (Plane p in me.Planes)
{
if (!valuesToReplace.Contains(p.Dist))
{
valuesToReplace.Add(p.Dist);
}
}
// Figure out, based on the probability of corruption, how many values to corrupt from the list
int numCorruptions = (int)Math.Ceiling(valuesToReplace.Count * percentage);
// Perform that many corruptions
for (int i = 0; i < numCorruptions; i++)
{
int indexToCorrupt = rand.Next(0, valuesToReplace.Count);
double valueToCorrupt = valuesToReplace[indexToCorrupt];
double newValue = 0.0;
if (values == CorruptionValue.RELATIVE)
{
newValue = valueToCorrupt + (rand.NextDouble() * 2.0 * range) - range;
}
else if (values == CorruptionValue.RANDOM)
{
newValue = (rand.NextDouble() * 2.0 * range) - range;
}
// Replace EVERY instance of the value with the corruption
valuesToReplace[indexToCorrupt] = newValue;
foreach (Vertex v in me.Vertices)
{
for (int j = 0; j < 3; j++)
{
if (v[j] == valueToCorrupt)
{
v[j] = newValue;
}
}
}
foreach (Plane p in me.Planes)
{
if (p.Dist == valueToCorrupt)
{
p.Dist = newValue;
}
}
}
}
