Vector2 GetXYAtTime(TranslateTimeline timeline, float time)
{
const int ENTRIES = 3;
const int PREV_TIME = -3, PREV_X = -2, PREV_Y = -1;
const int X = 1, Y = 2;
float x, y;
float[] frames = timeline.Frames;
if (time < frames[0])
{
return(new Vector2(0, 0));
}
if (time >= frames[frames.Length - ENTRIES])
{
x = frames[frames.Length + PREV_X];
y = frames[frames.Length + PREV_Y];
return(new Vector2(x, y));
}
//보간
int frame = Spine.Animation.BinarySearch(frames, time, ENTRIES);
float prevX = frames[frame + PREV_X];
float prevY = frames[frame + PREV_Y];
float frameTime = frames[frame];
float percent = timeline.GetCurvePercent(frame / ENTRIES - 1, 1 - (time - frameTime) / (frames[frame + PREV_TIME] - frameTime));
x = prevX + (frames[frame + X] - prevX) * percent;
y = prevY + (frames[frame + Y] - prevY) * percent;
return(new Vector2(x, y));
}
/// <summary>Evaluates the resulting value of a TranslateTimeline at a given time.
/// SkeletonData can be accessed from Skeleton.Data or from SkeletonDataAsset.GetSkeletonData.
/// If no SkeletonData is given, values are computed relative to setup pose instead of local-absolute.</summary>
public static Vector2 Evaluate(this TranslateTimeline timeline, float time, SkeletonData skeletonData = null)
{
const int PREV_TIME = -3, PREV_X = -2, PREV_Y = -1;
const int X = 1, Y = 2;
var frames = timeline.frames;
if (time < frames[0])
{
return(Vector2.zero);
}
float x, y;
if (time >= frames[frames.Length - TranslateTimeline.ENTRIES]) // Time is after last frame.
{
x = frames[frames.Length + PREV_X];
y = frames[frames.Length + PREV_Y];
}
else
{
// Interpolate between the previous frame and the current frame.
int frame = Animation.BinarySearch(frames, time, TranslateTimeline.ENTRIES);
x = frames[frame + PREV_X];
y = frames[frame + PREV_Y];
float frameTime = frames[frame];
float percent = timeline.GetCurvePercent(frame / TranslateTimeline.ENTRIES - 1,
1 - (time - frameTime) / (frames[frame + PREV_TIME] - frameTime));
x += (frames[frame + X] - x) * percent;
y += (frames[frame + Y] - y) * percent;
}
Vector2 xy = new Vector2(x, y);
if (skeletonData == null)
{
return(xy);
}
else
{
var boneData = skeletonData.bones.Items[timeline.boneIndex];
return(xy + new Vector2(boneData.x, boneData.y));
}
}
/// <summary>Evaluates the resulting value of a TranslateTimeline at a given time.
/// SkeletonData can be accessed from Skeleton.Data or from SkeletonDataAsset.GetSkeletonData.
/// If no SkeletonData is given, values are computed relative to setup pose instead of local-absolute.</summary>
public static Vector2 Evaluate(this TranslateTimeline tt, float time, SkeletonData skeletonData = null)
{
const int PREV_TIME = -3, PREV_X = -2, PREV_Y = -1;
const int X = 1, Y = 2;
var frames = tt.Frames;
if (time < frames[0])
{
return(Vector2.zero);
}
float x, y;
if (time >= frames[frames.Length - TranslateTimeline.ENTRIES])
{ // Time is after last frame.
x = frames[frames.Length + PREV_X];
y = frames[frames.Length + PREV_Y];
}
else
{
int frame = Animation.BinarySearch(frames, time, TranslateTimeline.ENTRIES);
x = frames[frame + PREV_X];
y = frames[frame + PREV_Y];
float frameTime = frames[frame];
float percent = tt.GetCurvePercent(frame / TranslateTimeline.ENTRIES - 1, 1 - (time - frameTime) / (frames[frame + PREV_TIME] - frameTime));
x += (frames[frame + X] - x) * percent;
y += (frames[frame + Y] - y) * percent;
}
Vector2 o = new Vector2(x, y);
if (skeletonData == null)
{
return(o);
}
else
{
var boneData = skeletonData.Bones.Items[tt.BoneIndex];
return(o + new Vector2(boneData.X, boneData.Y));
}
}