static void Main(string[] args)
{
Mathematics math = new Mathematics();
Console.WriteLine(math.Abs(-5));
Console.WriteLine(math.Abs(-10.052));
Console.WriteLine(math.Abs(20.01m));
}
/// <summary>
/// Override the OnRender method to do the actual drawing of the menu.
/// </summary>
/// <param name="dc">The drawing context to render.</param>
public override void OnRender(DrawingContext dc)
{
// Call the base class in case this control contains other controls.
// Depending on where those controls are placed, this call might not
// be optimal.
base.OnRender(dc);
// Calculate some initial values for positioning and drawing the
// MenuItems.
// Set the width of each MenuItem.
int largeX = Resource.GetBitmap(Resource.BitmapResources.Canvas_Panel_Icon).Width + xOffsetSeparation;
// Set the starting x position.
int x = (_width / 2) - ((largeX * 2) + (largeX / 2));
// Set the starting y position.
int y = 6;
// Set the scaling of the current MenuItem.
int scale = 0;
// Set the scaling offset based on the animation step.
int scaleOffset = Mathematics.Abs(_animationStep);
// Adjust the x based on the animation step.
x += _animationStep * 5;
// Iterate through the children, limiting them to 2 in front and 2
// behind the current child. This places the current MenuItem in the
// middle of the menu.
for (int i = _currentChild - 2; i < _currentChild + 3; i++)
{
// If we are on the current child...
if (i == _currentChild)
{
// Scale the current child based on the current animation step
// value. The current child is getting smaller, so take the
// largest value (maxStep) and subtract the current scaling
// offset.
scale = maxStep - scaleOffset;
}
else
{
// If we are moving left and are drawing the child to the left,
// or we are moving right and are drawing the child to the
// right, then that child needs to be growing in size. Else the
// child is drawn without any scaling.
if ((_animationStep < 0 && i == _currentChild + 1) || (_animationStep > 0 && i == _currentChild - 1))
{
scale = scaleOffset;
}
else
{
scale = 0;
}
}
// Variable to point to the current MenuItem we want to draw.
MenuItem menuItem = null;
// Get the correct MenuItem from the array based on the value of i.
// Because we are looking 2 left and 2 right, if the current child
// is near the beginning or end of the array, we have to watch for
// wrapping around the ends.
if (i < 0)
{
menuItem = (MenuItem)MenuItemList[MenuItemList.Count + i];
}
else if (i > MenuItemList.Count - 1)
{
menuItem = (MenuItem)MenuItemList[i - MenuItemList.Count];
}
else
{
menuItem = (MenuItem)MenuItemList[i];
}
// Have the MenuItem render itself based on the position and scaling
// calculated.
menuItem.Render(dc, x, y, scale);
// Increment the x position by the size of the MenuItems
x += largeX;
}
// Draw the current menuItem's text.
if (_width > 0)
{
// Check the window size for displaying instructions.
int step = 20;
int row = 120;
// Check for portrait display.
if (_width < _height)
{
step = 40;
}
// Draw the description of the current MenuItem.
string text = ((MenuItem)MenuItemList[_currentChild]).Description;
dc.DrawText(ref text, Resource.GetFont(Resource.FontResources.NinaB), Color.White, 10, row, _width - 20, step, TextAlignment.Center, TextTrimming.None);
// Draw the basic instructions for the menu.
text = Resource.GetString(Resource.StringResources.MenuScrolling);
row += (step * 2);
dc.DrawText(ref text, Resource.GetFont(Resource.FontResources.NinaB), Color.White, 10, row, _width - 20, step, TextAlignment.Center, TextTrimming.None);
text = Resource.GetString(Resource.StringResources.MenuSelection);
row += step;
dc.DrawText(ref text, Resource.GetFont(Resource.FontResources.NinaB), Color.White, 10, row, _width - 20, step, TextAlignment.Center, TextTrimming.None);
text = Resource.GetString(Resource.StringResources.ReturnToMenu);
row += step;
dc.DrawText(ref text, Resource.GetFont(Resource.FontResources.NinaB), Color.White, 10, row, _width - 20, step, TextAlignment.Center, TextTrimming.None);
}
// Start the animation timer. The animation timer is called every time
// the menu is rendered. The animation timer will handle decrementing
// the _animationStep member and stopping the timer when _animationStep
// reaches 0.
StartAnimationTimer();
}