/// <summary>Animates this property now.</summary>
/// <param name="animation">The animation that this property is a part of.</param>
/// <param name="targetValue">The parsed value that this property will be when the animation is over.</param>
/// <param name="constantSpeedTime">How long the animation will change the value at a constant speed for.</param>
/// <param name="timeToAccelerateFor">How long the animation will accelerate for. This produces a smoother animation.</param>
/// <param name="timeToDecelerateFor">How long the animation will decelerate for. This produces a smoother animation.</param>
/// <param name="updateCss">True if this particular property should flush its changes to css/the screen.</param>
public void Animate(UIAnimation animation,Css.Value targetValue,float constantSpeedTime,float timeToAccelerateFor,float timeToDecelerateFor,bool updateCss){
Animation=animation;
ValueObject.Type=targetValue.Type;
Stage=0;
Speed=0f;
CurrentTime=0f;
UpdateCss=updateCss;
PropertyAfter=PropertyBefore=null;
// Find the max speed. This is what we accelerate to.
// Speed (y) / time (x) graph:
// /| |-| |\
// A B C. A = accelerate, b=constant, c=decelerate.
// Max speed = top y value.
// Distance travelled = area of the graph. This should match target - current value.
TargetValue=targetValue.ToFloat();
float unitsDelta=TargetValue - ActiveValue;
MaxSpeed=(unitsDelta*UI.RedrawRate) / ( (0.5f*timeToAccelerateFor) + constantSpeedTime + (0.5f*timeToDecelerateFor) );
if(timeToAccelerateFor==0f){
// Skip acceleration stage.
Stage=1;
Speed=MaxSpeed;
}else{
Acceleration=MaxSpeed*UI.RedrawRate / timeToAccelerateFor;
}
if(timeToDecelerateFor!=0f){
Deceleration=MaxSpeed*UI.RedrawRate / timeToDecelerateFor;
}
}
