public RenderElementDisplay(RenderElementProps props)
{
style = new RenderElementStyle(this, props);
Region = new RenderElementRegion(Style);
Animation = new RenderElementAnimator(this);
}
private bool AnimateEntry(RenderElementDisplay display, IUserInterfaceRenderContext renderContext, RenderElementAnimator animation)
{
animation.Alpha +=
(float)renderContext.GameTime.ElapsedGameTime.TotalSeconds
/ transitionTime;
if (animation.Alpha >= 1)
{
animation.Alpha = 1;
animation.AnimatedBorderRect = display.BorderRect;
return(true);
}
const float shrinkMax = 0.1f;
float shrink = shrinkMax * MathF.Pow(1 - animation.Alpha, 3);
float leftRightMargin = shrink * display.BorderRect.Width;
float topBottomMargin = shrink * display.BorderRect.Height;
animation.AnimatedBorderRect = new Rectangle(
display.BorderRect.X + (int)leftRightMargin,
display.BorderRect.Y + (int)leftRightMargin,
display.BorderRect.Width - (int)(2 * leftRightMargin),
display.BorderRect.Height - (int)(2 * leftRightMargin));
Log.Debug($"Alpha: {animation.Alpha} BorderRect: {display.BorderRect} AnimatedBorderRect: {animation.AnimatedBorderRect}");
return(false);
}
private bool AnimateExit(RenderElementDisplay display, IUserInterfaceRenderContext renderContext, RenderElementAnimator animation)
{
animation.Alpha -=
(float)renderContext.GameTime.ElapsedGameTime.TotalSeconds
/ transitionTime;
if (animation.Alpha <= 0)
{
animation.Alpha = 0;
animation.IsVisible = false;
return(true);
}
const float shrinkMax = 0.1f;
float shrink = shrinkMax * MathF.Pow(1 - animation.Alpha, 0.8f);
float leftRightMargin = shrink * display.BorderRect.Width;
float topBottomMargin = shrink * display.BorderRect.Height;
animation.AnimatedBorderRect = new Rectangle(
display.BorderRect.X + (int)leftRightMargin,
display.BorderRect.Y + (int)leftRightMargin,
display.BorderRect.Width - (int)(2 * leftRightMargin),
display.BorderRect.Height - (int)(2 * leftRightMargin));
return(false);
}