static void RenderZoom(Bitmap inpmap)
{
//TODO make parallel [see https://github.com/rasberry/AreaSmoother/blob/master/Program.cs]
//TODO do timing test vs imagemagick
double cx = inpmap.Width / 2.0;
double cy = inpmap.Height / 2.0;
double mult = ZoomAmount;
double maxdist = Math.Sqrt(cy * cy + cx * cx);
for (double y = 0; y < inpmap.Height; y++)
{
Console.WriteLine("y = " + y);
for (double x = 0; x < inpmap.Width; x++)
{
double dist = Math.Sqrt((y - cy) * (y - cy) + (x - cx) * (x - cx));
int idist = (int)Math.Ceiling(dist);
List <Color> vector = new List <Color>(idist);
double ang = Math.Atan2(y - cy, x - cx);
//double sd = dist/mult;
//double ed = dist/mult + mult;
//double sd = 0.1, ed = dist/mult;
//double scale = maxdist/dist;
//double ed = mult * scale;
double ed = dist;
double sd = dist * mult;
for (double d = sd; d < ed; d++)
{
double px = Math.Cos(ang) * d + cx;
double py = Math.Sin(ang) * d + cy;
int ipx = (int)Math.Round(px, 0);
int ipy = (int)Math.Round(py, 0);
Color c = GetAliasedColor(InputBitmap, ipx, ipy);
vector.Add(c);
}
Color avg;
int count = vector.Count;
if (count == 0)
{
avg = InputBitmap.GetPixel((int)x, (int)y);
}
else
{
int cr = 0, cg = 0, cb = 0, ca = 0;
foreach (Color c in vector)
{
cr += c.R; cg += c.G; cb += c.B;
ca += c.A;
}
avg = Color.FromArgb(ca / count, cr / count, cg / count, cb / count);
}
OutputBitmap.SetPixel((int)x, (int)y, avg);
}
}
}
public void Start()
{
int NumSamples = InputBitmap.Width * InputBitmap.Height;
byte[] Samples = new byte[NumSamples];
OutputWav = new WaveFile(1, 16, 44000);
if (InputBitmap == null)
{
throw new Exception(NoInputBitmap);
}
double[] data = new double[InputBitmap.Height];
int w = 0;
for (int i = 0; i < InputBitmap.Width; i++)
{
for (int j = 0; j < InputBitmap.Height; j++)
{
Color C = InputBitmap.GetPixel(i, j);
data[j] = (C.R + C.G + C.B) / 3;
}
FFT_Img2Wav.inverse(data);
// Ciclo per tutti i data
for (int x = 0; x < data.Length; x++)
{
Samples[w] = (byte)(MAX_DATA * data[x]);
w++;
}
}
OutputWav.SetData(Samples, NumSamples);
}