private void initRender(WriteableBitmap bitmap, Rect view)
{
m_bitmap = bitmap;
m_bitmap.Dispatcher.Invoke(new Action(() =>
{
m_pxWidth = m_bitmap.PixelWidth;
if (m_pxWidth % 2 == 1)
{
m_pxWidth++;
}
m_pxHeight = m_bitmap.PixelHeight;
m_bytesPerPixel = m_bitmap.Format.BitsPerPixel / 8;
m_pBackbuffer = m_bitmap.BackBuffer;
}));
m_topLeft = new Complex(view.Left, view.Top);
m_size = new Complex(view.Width, view.Height);
//init point array
m_curDepth = 0;
m_values = new MandelPoint[m_pxWidth, m_pxHeight];
for (int x = 0; x < m_pxWidth; x++)
{
for (int y = 0; y < m_pxHeight; y++)
{
m_values[x, y] = new MandelPoint(m_topLeft, m_size, x / (double)m_pxWidth, y / (double)m_pxHeight);
}
}
}
private void calcPoint(int x, int y)
{
MandelPoint mp = m_values[x, y];
if (mp.notInSet)
{
return;
}
do
{
m_fractDef.applyFunction(mp);
if (!m_fractDef.isInSet(mp))
{
setPixel(x, y, m_colorLookup[mp.depth % colorPeriod]);
mp.notInSet = true;
return;
}
mp.depth++;
}while (rendering && mp.depth <= m_maxDepth && mp.depth % m_drawInterval != 0);
setPixel(x, y, Colors.Black);
}
//check if point is in the mandelbrot set
public bool isInSet(MandelPoint p)
{
return(p.z.Real * p.z.Real + p.z.Imaginary * p.z.Imaginary < 500);
}
///applies mandelbrot function to point
public void applyFunction(MandelPoint p)
{
p.z = p.z * p.z + p.c;
}
