private AnimatableValueParser(JsonObject json, float scale, LottieComposition composition, IAnimatableValueFactory <T> valueFactory)
{
_json = json;
_scale = scale;
_composition = composition;
_valueFactory = valueFactory;
}
internal static AnimatableValueParser <T> NewInstance(JsonObject json, float scale, LottieComposition composition, IAnimatableValueFactory <T> valueFactory)
{
return(new AnimatableValueParser <T>(json, scale, composition, valueFactory));
}
internal static Keyframe <T> NewInstance(JsonObject json, LottieComposition composition, float scale, IAnimatableValueFactory <T> valueFactory)
{
PointF cp1 = null;
PointF cp2 = null;
float startFrame = 0;
var startValue = default(T);
var endValue = default(T);
IInterpolator interpolator = null;
if (json.ContainsKey("t"))
{
startFrame = (float)json.GetNamedNumber("t", 0);
if (json.TryGetValue("s", out var startValueJson))
{
startValue = valueFactory.ValueFromObject(startValueJson, scale);
}
if (json.TryGetValue("e", out var endValueJson))
{
endValue = valueFactory.ValueFromObject(endValueJson, scale);
}
var cp1Json = json.GetNamedObject("o", null);
var cp2Json = json.GetNamedObject("i", null);
if (cp1Json != null && cp2Json != null)
{
cp1 = JsonUtils.PointFromJsonObject(cp1Json, scale);
cp2 = JsonUtils.PointFromJsonObject(cp2Json, scale);
}
var hold = (int)json.GetNamedNumber("h", 0) == 1;
if (hold)
{
endValue = startValue;
// TODO: create a HoldInterpolator so progress changes don't invalidate.
interpolator = LinearInterpolator;
}
else if (cp1 != null)
{
cp1 = new PointF(MiscUtils.Clamp(cp1.X, -scale, scale),
MiscUtils.Clamp(cp1.Y, -MaxCpValue, MaxCpValue));
cp2 = new PointF(MiscUtils.Clamp(cp2.X, -scale, scale),
MiscUtils.Clamp(cp2.Y, -MaxCpValue, MaxCpValue));
interpolator = new PathInterpolator(cp1.X / scale, cp1.Y / scale, cp2.X / scale, cp2.Y / scale);
}
else
{
interpolator = LinearInterpolator;
}
}
else
{
startValue = valueFactory.ValueFromObject(json, scale);
endValue = startValue;
}
return(new Keyframe <T>(composition, startValue, endValue, interpolator, startFrame, null));
}
internal static IList <IKeyframe <T> > ParseKeyframes(JsonArray json, LottieComposition composition, float scale, IAnimatableValueFactory <T> valueFactory)
{
var length = json.Count;
if (length == 0)
{
return(new List <IKeyframe <T> >());
}
IList <IKeyframe <T> > keyframes = new List <IKeyframe <T> >();
for (uint i = 0; i < length; i++)
{
keyframes.Add(NewInstance(json.GetObjectAt(i), composition, scale, valueFactory));
}
SetEndFrames <IKeyframe <T>, T>(keyframes);
return(keyframes);
}
internal static PathKeyframe NewInstance(JsonObject json, LottieComposition composition, IAnimatableValueFactory <Vector2?> valueFactory)
{
var keyframe = KeyFrameFactory.NewInstance(json, composition, composition.DpScale, valueFactory);
Vector2?cp1 = null;
Vector2?cp2 = null;
var tiJson = json.GetNamedArray("ti", null);
var toJson = json.GetNamedArray("to", null);
if (tiJson != null && toJson != null)
{
cp1 = JsonUtils.PointFromJsonArray(toJson, composition.DpScale);
cp2 = JsonUtils.PointFromJsonArray(tiJson, composition.DpScale);
}
var pathKeyframe = new PathKeyframe(composition, keyframe.StartValue, keyframe.EndValue, keyframe.Interpolator, keyframe.StartFrame, keyframe.EndFrame);
var equals = keyframe.EndValue != null && keyframe.StartValue != null && keyframe.StartValue.Equals(keyframe.EndValue);
if (pathKeyframe.EndValue != null && !equals)
{
pathKeyframe._path = Utils.Utils.CreatePath(keyframe.StartValue.Value, keyframe.EndValue.Value, cp1, cp2);
}
return(pathKeyframe);
}
