private void viewport_MouseMove(object sender, MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
ModelGrid.Sculpt(e.GetPosition(viewport), viewport.ActualWidth, viewport.ActualHeight);
}
}
private void viewport_MouseDown(object sender, MouseButtonEventArgs e)
{
ModelGrid.BeginSculpturing();
ModelGrid.Sculpt(e.GetPosition(viewport), viewport.ActualWidth, viewport.ActualHeight);
}