private void PreparePlay()
{
for (int i = 0; i < _elements.Count; ++i)
{
EffectElementBase element = _elements[i];
// Check if we have a start value that needs setting.
if (element.elementType == ElementType.AnimateBetween)
{
View target = _rootView.FindChildByName(element.target);
if (target == null)
{
Console.WriteLine("Effect: Error: Could not find target: " + element.target);
}
else
{
int propertyIndex = target.GetPropertyIndex(element.property);
if (propertyIndex == -1)
{
Console.WriteLine("Effect: Error: Could not find property: " + element.property + " in target " + element.target);
}
else
{
PropertyValue propertyValue = PropertyValue.CreateFromObject((element as AnimateBetween).startValue);
target.SetProperty(propertyIndex, propertyValue);
}
}
}
}
}
/// <summary>
/// Play animations
/// </summary>
/// <param name="targetView">target view</param>
/// <param name="speedFactor">speed factor,default value is 1.0f</param>
public void Play(View targetView = null, float speedFactor = 1.0f)
{
EndAnimations();
Animation animation = new Animation(); // Uninitialized as created as required during loop.
if (_useAnimation == null)
{
_animations.Clear();
}
else
{
animation = _animations[0];
animation.SpeedFactor = speedFactor;
}
PreparePlay();
// We initialise this true to force an animation to be created on the first loop.
bool lastElementLoopState = true;
View target = targetView;
// Add all the animations within the effect-elements to the final animation.
for (int i = 0; i < _elements.Count; ++i)
{
EffectElementBase element = _elements[i];
int useEndTime = element.endTime == -1 ? _duration : element.endTime;
if (targetView == null)
{
target = _rootView.FindChildByName(element.target);
}
if (target == null)
{
continue;
}
// We want to know if we are going from looping to non-looping, or vice-versa. This is so we know when to create a new animation.
// It is important that we also do this if we stay as looping, so the only valid state to NOT create an animation is neither old or new are looping.
// We also check if the current animation has been populated, as if it is empty it can be used anyway.
// If we are using a user provide animation, we skip this.
if ((element.looping || lastElementLoopState) && (_useAnimation == null))
{
_animations.Add(new Animation());
animation = _animations[_animations.Count - 1];
animation.Duration = _duration; //TODO: Remove the need for this ? Or keep it if start and end times become percentage fractions.
animation.Looping = element.looping;
animation.EndAction = _endAction;
animation.SpeedFactor = speedFactor;
}
lastElementLoopState = element.looping;
// Add an animator to the current animation.
switch (element.elementType)
{
case Effect.ElementType.AnimateTo:
case Effect.ElementType.AnimateBetween:
{
animation.AnimateTo(target, element.property, element.targetValue, element.startTime, useEndTime, element.alphaFunction);
break;
}
case Effect.ElementType.AnimateBy:
{
animation.AnimateBy(target, element.property, element.targetValue, element.startTime, useEndTime, element.alphaFunction);
break;
}
case Effect.ElementType.AnimateKeyframes:
{
AnimateKeyframes animateKeyframes = element as AnimateKeyframes;
animation.AnimateBetween(target, element.property, animateKeyframes.keyframes, element.startTime, useEndTime, animateKeyframes.interpolation, element.alphaFunction);
break;
}
case Effect.ElementType.AnimatePath:
{
AnimatePath animatePath = element as AnimatePath;
animation.AnimatePath(target, animatePath.path, element.targetValue as Vector3, element.startTime, useEndTime, element.alphaFunction);
break;
}
}
}
// Loop through the created animations and play them.
_animatorsRunning = _animations.Count;
for (int i = 0; i < _animatorsRunning; ++i)
{
// Play the current animation
_animations[i].Finished += AnimatorFinishedHandler;
_animations[i].Play();
}
}
/// <summary>
/// Add element to list
/// </summary>
/// <param name="element">effect element</param>
public void AddAction(EffectElementBase element)
{
_elements.Add(element);
}