public Animation Linear <T>(
FieldGetFn <T> getter,
FieldSetFn <T> setter,
LerpFn <T> lerp,
T dest,
float velocity,
Animation.Callback callback = null)
{
T origin = getter.Invoke();
float t = 0;
return(new Animation(
() =>
{
origin = getter.Invoke();
t = 0f;
return null;
},
(object state, float dt) =>
{
t += dt * velocity;
setter.Invoke(lerp.Invoke(origin, dest, t));
return state;
},
(object state) => t >= 1,
(object state) =>
{
if (callback != null)
{
callback.Invoke(null);
}
}));
}
public Animation Lerp <T>(
FieldGetFn <T> getter,
FieldSetFn <T> setter,
LerpFn <T> lerp,
Comparator <T> magnitude,
T dest,
float velocity,
Animation.Callback callback = null)
{
return(new Animation(
() => null,
(object state, float t) =>
{
setter.Invoke(lerp.Invoke(getter.Invoke(), dest, velocity * t));
return state;
},
(object state) => (magnitude.Invoke(getter.Invoke(), dest) < epsilon),
(object state) =>
{
setter.Invoke(dest);
if (callback != null)
{
callback.Invoke(state);
}
}
));
}