public static bool TimeWarp(Bitmap b, Byte factor, bool bSmoothing)
{
int nWidth = b.Width;
int nHeight = b.Height;
FloatPoint[,] fp = new FloatPoint[nWidth, nHeight];
Point[,] pt = new Point[nWidth, nHeight];
Point mid = new Point();
mid.X = nWidth / 2;
mid.Y = nHeight / 2;
double theta, radius;
double newX, newY;
for (int x = 0; x < nWidth; ++x)
{
for (int y = 0; y < nHeight; ++y)
{
int trueX = x - mid.X;
int trueY = y - mid.Y;
theta = Math.Atan2((trueY), (trueX));
radius = Math.Sqrt(trueX * trueX + trueY * trueY);
double newRadius = Math.Sqrt(radius) * factor;
newX = mid.X + (newRadius * Math.Cos(theta));
if (newX > 0 && newX < nWidth)
{
fp[x, y].X = newX;
pt[x, y].X = (int)newX;
}
else
{
fp[x, y].X = 0.0;
pt[x, y].X = 0;
}
newY = mid.Y + (newRadius * Math.Sin(theta));
if (newY > 0 && newY < nHeight)
{
fp[x, y].Y = newY;
pt[x, y].Y = (int)newY;
}
else
{
fp[x, y].Y = 0.0;
pt[x, y].Y = 0;
}
}
}
if (bSmoothing)
{
OffsetFilterAbs(b, pt);
}
else
{
OffsetFilterAntiAlias(b, fp);
}
return(true);
}
public static bool Water(Bitmap b, short nWave, bool bSmoothing)
{
int nWidth = b.Width;
int nHeight = b.Height;
FloatPoint[,] fp = new FloatPoint[nWidth, nHeight];
Point[,] pt = new Point[nWidth, nHeight];
Point mid = new Point();
mid.X = nWidth / 2;
mid.Y = nHeight / 2;
double newX, newY;
double xo, yo;
for (int x = 0; x < nWidth; ++x)
{
for (int y = 0; y < nHeight; ++y)
{
xo = ((double)nWave * Math.Sin(2.0 * Math.PI * (float)y / 128.0));
yo = ((double)nWave * Math.Cos(2.0 * Math.PI * (float)x / 128.0));
newX = (x + xo);
newY = (y + yo);
if (newX > 0 && newX < nWidth)
{
fp[x, y].X = newX;
pt[x, y].X = (int)newX;
}
else
{
fp[x, y].X = 0.0;
pt[x, y].X = 0;
}
if (newY > 0 && newY < nHeight)
{
fp[x, y].Y = newY;
pt[x, y].Y = (int)newY;
}
else
{
fp[x, y].Y = 0.0;
pt[x, y].Y = 0;
}
}
}
if (bSmoothing)
{
OffsetFilterAbs(b, pt);
}
else
{
OffsetFilterAntiAlias(b, fp);
}
return(true);
}