private void resetBackground(BackgroundComponent background)
{
if (!float.IsNaN(defaultVector.X) && !float.IsNaN(defaultVector.Y))
{
background.Vector = defaultVector;
}
}
public override void update(IComponent component)
{
BackgroundComponent background = component as BackgroundComponent;
if (!initialized)
{
resetBackground(background);
initializeBackground(background);
initialized = true;
}
Vector2 temp = new Vector2();
temp.X = (distance.X / transition.Interval);
temp.Y = (distance.Y / transition.Interval);
int x = (int)(defaultVector.X - background.Vector.X);
int y = (int)(defaultVector.Y - background.Vector.Y);
if (((Math.Abs(x) < Math.Abs(temp.X)) || (Math.Abs(y) < Math.Abs(temp.Y))) && transition.State == TransitionState.intro)
{
background.Vector = defaultVector;
}
else
{
background.Vector += temp;
}
transition.update(component);
}
private void initializeBackground(BackgroundComponent background)
{
if (transition.State == TransitionState.intro)
{
defaultVector = background.Vector;
Vector2 temp = new Vector2();
temp = background.Vector + offset;
background.Vector = temp;
distance = defaultVector - temp;
}
else if (transition.State == TransitionState.exit || transition.State == TransitionState.selected)
{
defaultVector = background.Vector;
Vector2 temp = new Vector2();
temp = defaultVector + offset;
distance = defaultVector - temp;
}
}
private void setAlpha(BackgroundComponent background)
{
Color temp = background.BackgroundColor;
temp.A = (byte)alpha;
background.BackgroundColor = temp;
}
public override void setTransition(IComponent component)
{
BackgroundComponent background = component as BackgroundComponent;
initializeBackground(background);
initialized = true;
transition.setTransition(component);
}
private void resetBackground(BackgroundComponent background)
{
if (defaultAlpha > 0)
{
alpha = defaultAlpha;
setAlpha(background);
}
}
private void initializeBackground(BackgroundComponent background)
{
defaultAlpha = background.BackgroundColor.A;
//Set the fade to fade in
if (transition.State == TransitionState.intro)
{
direction = 255;
alpha = 0;
setAlpha(background);
}
//Else set the fade to fade out;
else if (transition.State == TransitionState.exit || transition.State == TransitionState.selected)
{
direction = -255;
alpha = 255;
setAlpha(background);
}
}
public override void update(IComponent component)
{
BackgroundComponent background = component as BackgroundComponent;
if (!initialized)
{
resetBackground(background);
initializeBackground(background);
initialized = true;
}
int x = 255 - alpha;
int y = direction / transition.Interval;
if (x >= y)
{
alpha += direction / transition.Interval;
}
setAlpha(background);
transition.update(component);
}