private void zoomOutContextMenuItem_Click(object sender, EventArgs e)
{
if (fractalStack.Count > 0)
{
FractalContext fc = fractalStack.Pop();
if (fractalStack.Count == 0)
{
zoomOutMenuItem.Enabled = false;
zoomOutContextMenuItem.Enabled = false;
zoomOutToolbarButton.Enabled = false;
}
xstart = fc.Xstart;
ystart = fc.Ystart;
xend = fc.Xend;
yend = fc.Yend;
xzoom = fc.Xzoom;
yzoom = fc.Yzoom;
bitmap = fc.Bitmap;
pictureBox.Image = bitmap;
graphics = Graphics.FromImage(pictureBox.Image);
DoMandelbrot();
}
}
private void pictureBox_MouseUp(object sender, MouseEventArgs e)
{
int mouse_selection_height, mouse_selection_width;
if (mouseLeftPressed)
{
mouseLeftPressed = false;
if (action)
{
mouse_x_end = e.X;
mouse_y_end = e.Y;
if (mouse_x_start > mouse_x_end)
{
int temp = mouse_x_start;
mouse_x_start = mouse_x_end;
mouse_x_end = temp;
}
if (mouse_y_start > mouse_y_end)
{
int temp = mouse_y_start;
mouse_y_start = mouse_y_end;
mouse_y_end = temp;
}
mouse_selection_width = (mouse_x_end - mouse_x_start);
mouse_selection_height = (mouse_y_end - mouse_y_start);
if ((mouse_selection_width < 2) && (mouse_selection_height < 2))
{
zoomInContextMenuItem_Click(sender, e);
}
else
{
FractalContext fc = new FractalContext(bitmap, xstart, ystart, xend, yend, xzoom, yzoom);
fractalStack.Push(fc);
zoomOutMenuItem.Enabled = true;
zoomOutContextMenuItem.Enabled = true;
zoomOutToolbarButton.Enabled = true;
if (((float)mouse_selection_width > (float)mouse_selection_height * xy))
{
mouse_y_end = (int)((float)mouse_y_start + (float)mouse_selection_width / xy);
}
else
{
mouse_x_end = (int)((float)mouse_x_start + (float)mouse_selection_height * xy);
}
xend = xstart + xzoom * (double)mouse_x_end;
yend = ystart + yzoom * (double)mouse_y_end;
xstart += xzoom * (double)mouse_x_start;
ystart += yzoom * (double)mouse_y_start;
}
xzoom = (xend - xstart) / (double)canvasWidth;
yzoom = (yend - ystart) / (double)canvasHeight;
DoMandelbrot();
isRectangle = false;
pictureBox.Invalidate();
pictureBox.Refresh();
}
}
}
private void zoomInContextMenuItem_Click(object sender, EventArgs e)
{
FractalContext fc = new FractalContext(bitmap, xstart, ystart, xend, yend, xzoom, yzoom);
fractalStack.Push(fc);
zoomOutMenuItem.Enabled = true;
zoomOutContextMenuItem.Enabled = true;
zoomOutToolbarButton.Enabled = true;
mouse_x_start = lastMouseRelativePosition.X - 10;
mouse_x_end = lastMouseRelativePosition.X + 10;
mouse_y_start = lastMouseRelativePosition.Y - 10;
mouse_y_end = lastMouseRelativePosition.Y - 10;
int mouse_selection_width = (mouse_x_end - mouse_x_start);
int mouse_selection_height = (mouse_y_end - mouse_y_start);
if (((float)mouse_selection_width > (float)mouse_selection_height * xy))
{
mouse_y_end = (int)((float)mouse_y_start + (float)mouse_selection_width / xy);
}
else
{
mouse_x_end = (int)((float)mouse_x_start + (float)mouse_selection_height * xy);
}
xzoom = (xend - xstart) / (double)canvasWidth * 1000;
yzoom = (yend - ystart) / (double)canvasHeight * 1000;
xend = xstart + xzoom * (double)mouse_x_end;
yend = ystart + yzoom * (double)mouse_y_end;
xstart += xzoom * (double)mouse_x_start;
ystart += yzoom * (double)mouse_y_start;
DoMandelbrot();
isRectangle = false;
pictureBox.Invalidate();
pictureBox.Refresh();
}
