public override Vector?GetValue(Keyframe <Vector?> keyframe, double keyframeProgress)
{
var pathKeyframe = (PathKeyframe)keyframe;
var path = pathKeyframe.Path;
if (path == null || path.Contours.Count == 0)
{
return(keyframe.StartValue);
}
if (ValueCallback != null)
{
return(ValueCallback.GetValueInternal(pathKeyframe.StartFrame.Value, pathKeyframe.EndFrame.Value,
pathKeyframe.StartValue, pathKeyframe.EndValue, LinearCurrentKeyframeProgress,
keyframeProgress, Progress));
}
if (_pathMeasureKeyframe != pathKeyframe)
{
_pathMeasure?.Dispose();
_pathMeasure = new PathMeasure(path);
_pathMeasureKeyframe = pathKeyframe;
}
return(_pathMeasure.GetPosTan(keyframeProgress * _pathMeasure.Length));
}
public override Vector2?GetValue(Keyframe <Vector2?> keyframe, float keyframeProgress)
{
var pathKeyframe = (PathKeyframe)keyframe;
var path = pathKeyframe.Path;
if (path == null || path.IsEmpty)
{
return(keyframe.StartValue);
}
if (ValueCallback != null)
{
var value = ValueCallback.GetValueInternal(pathKeyframe.StartFrame.Value, pathKeyframe.EndFrame.Value,
pathKeyframe.StartValue, pathKeyframe.EndValue, LinearCurrentKeyframeProgress,
keyframeProgress, Progress);
if (value != null)
{
return(value);
}
}
if (_pathMeasureKeyframe != pathKeyframe)
{
_pathMeasure?.Dispose();
_pathMeasure = new SKPathMeasure(path);
_pathMeasureKeyframe = pathKeyframe;
}
_pathMeasure.GetPositionAndTangent(keyframeProgress * _pathMeasure.Length, out var pos, out _);
return(new Vector2(pos.X, pos.Y));
}
public override float?GetValue(Keyframe <float?> keyframe, float keyframeProgress)
{
if (keyframe.StartValue == null || keyframe.EndValue == null)
{
throw new System.InvalidOperationException("Missing values for keyframe.");
}
if (ValueCallback != null)
{
return(ValueCallback.GetValueInternal(keyframe.StartFrame.Value, keyframe.EndFrame.Value, keyframe.StartValue, keyframe.EndValue, keyframeProgress, LinearCurrentKeyframeProgress, Progress));
}
return(MathExt.Lerp(keyframe.StartValue.Value, keyframe.EndValue.Value, keyframeProgress));
}
public override Color?GetValue(Keyframe <Color?> keyframe, float keyframeProgress)
{
if (keyframe.StartValue == null || keyframe.EndValue == null)
{
throw new System.InvalidOperationException("Missing values for keyframe.");
}
var startColor = keyframe.StartValue;
var endColor = keyframe.EndValue;
if (ValueCallback != null)
{
return(ValueCallback.GetValueInternal(keyframe.StartFrame.Value, keyframe.EndFrame.Value, startColor, endColor, keyframeProgress, LinearCurrentKeyframeProgress, Progress));
}
return(GammaEvaluator.Evaluate(keyframeProgress, startColor.Value, endColor.Value));
}
public override ScaleXy GetValue(Keyframe <ScaleXy> keyframe, float keyframeProgress)
{
if (keyframe.StartValue == null || keyframe.EndValue == null)
{
throw new InvalidOperationException("Missing values for keyframe.");
}
var startTransform = keyframe.StartValue;
var endTransform = keyframe.EndValue;
if (ValueCallback != null)
{
return(ValueCallback.GetValueInternal(keyframe.StartFrame.Value, keyframe.EndFrame.Value,
startTransform, endTransform,
keyframeProgress, LinearCurrentKeyframeProgress, Progress));
}
return(new ScaleXy(MathExt.Lerp(startTransform.ScaleX, endTransform.ScaleX, keyframeProgress), MathExt.Lerp(startTransform.ScaleY, endTransform.ScaleY, keyframeProgress)));
}
public override Vector2?GetValue(Keyframe <Vector2?> keyframe, float keyframeProgress)
{
if (keyframe.StartValue == null || keyframe.EndValue == null)
{
throw new System.InvalidOperationException("Missing values for keyframe.");
}
var startPoint = keyframe.StartValue;
var endPoint = keyframe.EndValue;
if (ValueCallback != null)
{
return(ValueCallback.GetValueInternal(keyframe.StartFrame.Value, keyframe.EndFrame.Value, startPoint, endPoint, keyframeProgress, LinearCurrentKeyframeProgress, Progress));
}
_point.X = startPoint.Value.X + keyframeProgress * (endPoint.Value.X - startPoint.Value.X);
_point.Y = startPoint.Value.Y + keyframeProgress * (endPoint.Value.Y - startPoint.Value.Y);
return(_point);
}
