public Renderer(MandelPos position, ColorMappings.ColorMap colorMap, FastImage fastImage, int maxIterations)
{
_position = position;
_colorMap = colorMap;
_fastImage = fastImage;
_maxIterations = maxIterations;
_pixelBufferPtr = fastImage.GetPointer();
}
private void ZoomSelectionHandler_ZoomSelected(object sender, ZoomSelectionEventArgs e)
{
// magnitude of height and width in complex plane
double complexPlaneWidth = CurrentFrame.Position.XDiff;
double complexPlaneHeight = CurrentFrame.Position.YDiff;
// magnitude of starting points in complex plane
double complexRectX = (complexPlaneWidth * e.StartX) / RenderSizeRef.DisplayWidth;
double complexRectY = (complexPlaneHeight * e.StartY) / RenderSizeRef.DisplayHeight;
// length of the zooming rectangle in the complex plane
double complexRectWidth = (complexPlaneWidth * e.Width) / RenderSizeRef.DisplayWidth;
double complexRectHeight = (complexPlaneHeight * e.Height) / RenderSizeRef.DisplayHeight;
// calculate new positions in mandelbrot set
MandelPos pos = new MandelPos(CurrentFrame.Position.XMin + complexRectX,
CurrentFrame.Position.XMin + complexRectX + complexRectWidth,
CurrentFrame.Position.YMin + complexRectY,
CurrentFrame.Position.YMin + complexRectY + complexRectHeight);
// enque and render
SubmitFrame(new MandelFrame(this, pos));
}
