public ExportImage(FractalParameters fp, RenderingParameters rp)
{
_fractalP = fp;
_renderP = rp;
InitializeComponent();
txtViewPosX.Text = _fractalP.viewPort.X.ToString();
txtViewPosY.Text = _fractalP.viewPort.Y.ToString();
txtViewWidth.Text = _fractalP.viewPort.Width.ToString();
txtViewHeight.Text = _fractalP.viewPort.Height.ToString();
}
/**
* Generate the data. return true if the Image property has been changed.
**/
public bool generate(FractalParameters fp, CancellationToken? ct)
{
bool innerDataChanged = false;
// default value
ParallelOptions po = new ParallelOptions();
if (ct != null)
po.CancellationToken = (CancellationToken)ct;
// If the size of the generation has changed or if it is the first generation
if (_tabResultComputation == null || fp.width != _width || fp.height != _height)
{
init(fp.width, fp.height);
innerDataChanged = true;
}
float mulX = fp.viewPort.Width / (float)fp.width;
float mulY = fp.viewPort.Height / (float)fp.height;
float baseX = (float)fp.viewPort.X;
float baseY = (float)fp.viewPort.Y;
int bailout;
int maxIter;
if (fp.highQuality)
{
bailout = 1000;
maxIter = 3000;
}
else
{
bailout = 2;
maxIter = 255;
}
po.CancellationToken.ThrowIfCancellationRequested();
try
{
Parallel.For(0, _height, po, j =>
{
Complex z, c;
switch (fp.type)
{
// TODO: Ugly, create a Fractal object subclassed by JULIA, MANDELBROT et al.
// with : "Name", "Values(line)" (to limit the number of function call), etc.
case FractalType.BURNING_SHIP:
c._imag = j * mulY + baseY;
for (int i = 0; i < _width; i++)
{
c._real = i * mulX + baseX;
setValAt(i, j, ComputeAbsValAt(c, fp.highQuality, bailout, maxIter));
}
break;
case FractalType.MANDELBROT:
z = new Complex(0, 0);
c._imag = j * mulY + baseY;
for (int i = 0; i < _width; i++)
{
c._real = i * mulX + baseX;
setValAt(i, j, ComputeValAt(z, c, fp.highQuality, bailout, maxIter));
}
break;
case FractalType.JULIA:
c = fp.c;
z._imag = j * mulY + baseY;
for (int i = 0; i < _width; i++) {
z._real = i * mulX + baseX;
setValAt(i, j, ComputeValAt(z, c, fp.highQuality, bailout, maxIter));
}
break;
default:
throw new System.NotImplementedException(fp.type + "is not implemented");
}
});
}
catch (OperationCanceledException e) { throw e; }
return innerDataChanged;
}
