public virtual float?ValueFromObject(IJsonValue @object, float scale)
{
return(JsonUtils.ValueFromObject(@object) * scale);
}
internal static Keyframe <T> NewInstance(JsonObject json, LottieComposition composition, float scale, IAnimatableValueFactory <T> valueFactory)
{
Vector2? cp1 = null;
Vector2? 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 Vector2(MiscUtils.Clamp(cp1.Value.X, -scale, scale),
MiscUtils.Clamp(cp1.Value.Y, -MaxCpValue, MaxCpValue));
cp2 = new Vector2(MiscUtils.Clamp(cp2.Value.X, -scale, scale),
MiscUtils.Clamp(cp2.Value.Y, -MaxCpValue, MaxCpValue));
int hash = Utils.HashFor(cp1.Value.X, cp1.Value.Y, cp2.Value.X, cp2.Value.Y);
if (PathInterpolatorCache.TryGetValue(hash, out var interpolatorRef) == false ||
interpolatorRef.TryGetTarget(out interpolator) == false)
{
interpolator = new PathInterpolator(cp1.Value.X / scale, cp1.Value.Y / scale, cp2.Value.X / scale, cp2.Value.Y / scale);
PathInterpolatorCache[hash] = new WeakReference <IInterpolator>(interpolator);
}
}
else
{
interpolator = LinearInterpolator;
}
}
else
{
startValue = valueFactory.ValueFromObject(json, scale);
endValue = startValue;
}
return(new Keyframe <T>(composition, startValue, endValue, interpolator, startFrame, null));
}
public PointF ValueFromObject(IJsonValue @object, float scale)
{
return(JsonUtils.PointFromJsonArray(@object.GetArray(), scale));
}
public int?ValueFromObject(IJsonValue @object, float scale)
{
return((int?)Math.Round(JsonUtils.ValueFromObject(@object) * scale));
}