public AlchemyCurveAnimation(BinaryReader reader)
{
Type = (EasingTypes)reader.ReadByte();
int scount = reader.ReadByte();
Items = new List <AlchemyCurve> (scount);
for (int i = 0; i < scount; i++)
{
var cpkf = new AlchemyCurve();
cpkf.SParam = reader.ReadSingle();
cpkf.Value = reader.ReadSingle();
ushort loop = reader.ReadUInt16();
cpkf.Flags = (LoopFlags)loop;
ushort lcnt = reader.ReadUInt16();
if (loop != 0 || lcnt != 0)
{
var l = new List <CurveKeyframe> (lcnt);
for (int j = 0; j < lcnt; j++)
{
l.Add(new CurveKeyframe()
{
Time = reader.ReadSingle(),
Value = reader.ReadSingle(),
InTangent = reader.ReadSingle(),
OutTangent = reader.ReadSingle()
});
}
cpkf.Keyframes = l;
}
Items.Add(cpkf);
}
}
public float GetValue(float sparam, float time)
{
//1 item, 1 value
if (Items.Count == 1)
{
return(Items [0].GetValue(time));
}
//Find 2 keyframes to interpolate between
AlchemyCurve c1 = null, c2 = null;
for (int i = 0; i < Items.Count - 1; i++)
{
if (sparam >= Items [i].SParam && sparam <= Items [i + 1].SParam)
{
c1 = Items [i];
c2 = Items [i + 1];
}
}
//We're at the end
if (c1 == null)
{
return(Items [Items.Count - 1].GetValue(time));
}
//Interpolate between SParams
var v1 = c1.GetValue(time);
var v2 = c2.GetValue(time);
return(AlchemyEasing.Ease(Type, sparam, c1.SParam, c2.SParam, v1, v2));
}
public float GetValue(float sparam, float time)
{
//1 item, 1 value
if (Items.Count == 1)
{
return(Items [0].GetValue(time));
}
//Find 2 keyframes to interpolate between
AlchemyCurve c1 = null, c2 = null;
for (int i = 0; i < Items.Count - 1; i++)
{
if (sparam >= Items [i].SParam && sparam <= Items [i + 1].SParam)
{
c1 = Items [i];
c2 = Items [i + 1];
if (i + 2 < Items.Count && (sparam >= Items[i + 1].SParam && sparam <= Items[i + 2].SParam))
{
//go one more for duplicates
c1 = Items[i + 1];
c2 = Items[i + 2];
}
break;
}
}
//We're at the end
if (c1 == null)
{
return(Items [Items.Count - 1].GetValue(time));
}
//Interpolate between SParams
if (Math.Abs(c1.SParam - c2.SParam) < float.Epsilon)
{
return(c2.GetValue(time));
}
var v1 = c1.GetValue(time);
var v2 = c2.GetValue(time);
return(Easing.Ease(Type, sparam, c1.SParam, c2.SParam, v1, v2));
}