static void DrawAnimationComponent(Vector2 orig, float frameRate,
SpriteAnimationComponent component, float time, Matrix4x4 parentMat, float parentRotation, Vector2 parentScale, SpriteTransform parentTran, int parentLayer)
{
SpriteTransform transform = new SpriteTransform();
transform.parent = parentTran;
transform.component = component;
transform.layer = (int)component.layer + parentLayer;
Sprite spr = null;
SpriteAnimationClip refClip = null;
SpriteAnimationKeyFrame kf = component.Evaluate(time,
ref transform.position,
ref transform.rotation,
ref transform.scale,
ref transform.shear,
ref transform.color,
ref spr,
ref refClip);
transform.sprite = spr;
componentTransforms.Add(transform);
transform.position.y = -transform.position.y;
Vector2 tranPosition = parentMat.MultiplyPoint3x4(transform.position);
Matrix4x4 tmpMat = Matrix4x4.TRS(transform.position, Quaternion.Euler(0, 0, -transform.rotation), transform.scale);
if (refClip != null)
{
float l = refClip.length;
float tick = 1f / refClip.frameRate;
AnimationLinearCurve clipPlayingCurve = new AnimationLinearCurve(0, 0, l, l);
clipPlayingCurve.wrapMode = refClip.wrapMode;
float t = clipPlayingCurve.Evaluate(time - kf.frameIndex * tick);
DrawAnimationComponent(orig, frameRate, refClip.root, t, parentMat * tmpMat,
parentRotation + transform.rotation,
new Vector2(transform.scale.x * parentScale.x, transform.scale.y * parentScale.y),
transform, transform.layer);
}
foreach (int comIdx in component.children)
{
SpriteAnimationComponent com = component.clip.subComponents[comIdx];
DrawAnimationComponent(orig, frameRate, com, time, parentMat * tmpMat,
parentRotation + transform.rotation,
new Vector2(transform.scale.x * parentScale.x, transform.scale.y * parentScale.y),
transform, parentLayer);
}
transform.position = tranPosition - orig;
transform.scale = new Vector2(transform.scale.x * parentScale.x, transform.scale.y * parentScale.y);
transform.rotation = parentRotation + transform.rotation;
}
