private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
switch (e.KeyChar)
{
// Press 'i' to zoom in.
case 'i':
m_framework.Zoom(2);
Invalidate();
break;
// Press 'o' to zoom out.
case 'o':
m_framework.Zoom(0.5);
Invalidate();
break;
// Press 'r' to rotate right.
case 'r':
m_framework.Rotate(10);
Invalidate();
break;
// Press 'l' to rotate left.
case 'l':
m_framework.Rotate(-10);
Invalidate();
break;
// Press 'p' to toggle perspective mode.
case 'p':
m_framework.SetPerspective(!m_framework.Perspective());
Invalidate();
break;
}
}
private void Window_MouseWheel(object sender, MouseWheelEventArgs e)
{
int zoom_count = e.Delta / 120;
double zoom = Math.Sqrt(2);
if (zoom_count == 0)
{
zoom_count = e.Delta >= 0 ? 1 : -1;
}
zoom = Math.Pow(zoom, zoom_count);
Point p = e.GetPosition(Application.Current.MainWindow);
if (p.X < ActualWidth && p.Y < ActualHeight)
{
m_framework.ZoomAt(zoom, (int)p.X, (int)p.Y, CartoType.CoordType.Screen);
}
else
{
m_framework.Zoom(zoom);
}
}