/// <summary>
/// Starts the animation
/// After start you can get the current value in <see cref="AnimationDrop.GetCurrentValue" /> method
/// </summary>
/// <param name="startVal">Starting AnimationDropData of the element</param>
public void Start(AnimationDropData startVal)
{
if (this.IsWorking)
{
this.Stop();
}
this.startValue = startVal;
this.startTime = Game.Time;
}
/// <summary>
/// Decreases the Height until it reaches 0
/// </summary>
/// <param name="curTime">Current Time (seconds)</param>
/// <param name="val">AnimationDropData</param>
/// <param name="dur">Duration</param>
/// <returns>New calculated AnimationDropData</returns>
private AnimationDropData VerticalDecrease(double curTime, AnimationDropData val, double dur)
{
var rec = val.Rectangle;
Color col = val.Color;
rec.Height = val.Rectangle.Height - (int)this.Linear(curTime, 0, val.Rectangle.Height, dur) - 1;
col.A = (byte)(this.InverseLinear(curTime, val.Color.A, dur));
var data = new AnimationDropData(rec, col);
return(data);
}
/// <summary>
/// Increases the Height from 0 to specified height
/// </summary>
/// <param name="curTime">Current Time (seconds)</param>
/// <param name="val">AnimationDropData</param>
/// <param name="dur">Duration</param>
/// <returns>New calculated AnimationDropData</returns>
private AnimationDropData VerticalIncrease(double curTime, AnimationDropData val, double dur)
{
Rectangle rec = val.Rectangle;
Color col = val.Color;
rec.Height = (int)this.Linear(curTime, 0, val.Rectangle.Height, dur) + 1;
col = new ColorBGRA(val.Color.B, val.Color.G, val.Color.R, (byte)this.Linear(curTime, val.Color.A, 255 - val.Color.A, dur));
AnimationDropData data = new AnimationDropData(rec, col);
return(data);
}
/// <summary>
/// Decreases the Width until it reaches 0
/// </summary>
/// <param name="curTime">Current Time (seconds)</param>
/// <param name="val">AnimationDropData</param>
/// <param name="dur">Duration</param>
/// <returns>New calculated AnimationDropData</returns>
private AnimationDropData HorizontalDecrease(double curTime, AnimationDropData val, double dur)
{
Rectangle rec = val.Rectangle;
Color col = val.Color;
rec.Width = val.Rectangle.Width - (int)this.Linear(curTime, 0, val.Rectangle.Width, dur) - 1;
col.A = (byte)(this.InverseLinear(curTime, val.Color.A, dur));
AnimationDropData data = new AnimationDropData(rec, col);
return(data);
}
/// <summary>
/// Increases the Width from 0 to specified width
/// </summary>
/// <param name="curTime">Current Time (seconds)</param>
/// <param name="val">AnimationDropData</param>
/// <param name="dur">Duration</param>
/// <returns>New calculated AnimationDropData</returns>
private AnimationDropData HorizontalIncrease(double curTime, AnimationDropData val, double dur)
{
var rec = val.Rectangle;
Color col = val.Color;
rec.Width = (int)this.Linear(curTime, 0, val.Rectangle.Width, dur) + 1;
col = new ColorBGRA(
val.Color.B,
val.Color.G,
val.Color.R,
(byte)this.Linear(curTime, val.Color.A, 255 - val.Color.A, dur));
var data = new AnimationDropData(rec, col);
return(data);
}
/// <summary>
/// Calculates the value of the specified mode
/// </summary>
/// <param name="curTime">Current Time (seconds)</param>
/// <param name="startVal">Start Value</param>
/// <param name="dur">Duration of the animation</param>
/// <returns>Returns the calculated value of the specified mode</returns>
private AnimationDropData Calculate(double curTime, AnimationDropData startVal, double dur)
{
switch (this.mode)
{
case Mode.VerticalDecrease:
this.endValue = this.VerticalDecrease(curTime, startVal, dur);
break;
case Mode.VerticalIncrease:
this.endValue = this.VerticalIncrease(curTime, startVal, dur);
break;
case Mode.HorizontalDecrease:
this.endValue = this.HorizontalDecrease(curTime, startVal, dur);
break;
case Mode.HorizontalIncrease:
this.endValue = this.HorizontalIncrease(curTime, startVal, dur);
break;
}
return(this.endValue ?? this.startValue);
}
/// <summary>
/// Initializes a new instance of the <see cref="AnimationDrop" /> class.
/// </summary>
/// <param name="mode">Selected mode for calculation</param>
/// <param name="duration">Selected duration for the defined animation</param>
/// <param name="defaultAnimDropData">Default AnimationDropData of the element</param>
public AnimationDrop(Mode mode, float duration, AnimationDropData defaultAnimDropData)
: base(duration)
{
this.mode = mode;
this.startValue = defaultAnimDropData;
}
