public void Draw(BitmapCanvas canvas, Matrix3X3 parentMatrix, byte parentAlpha)
{
LottieLog.BeginSection("GradientFillContent.Draw");
_path.Reset();
for (var i = 0; i < _paths.Count; i++)
{
_path.AddPath(_paths[i].Path, parentMatrix);
}
//_path.ComputeBounds(out _boundsRect);
Shader shader;
if (_type == GradientType.Linear)
{
shader = LinearGradient;
}
else
{
shader = RadialGradient;
}
_shaderMatrix.Set(parentMatrix);
shader.LocalMatrix = _shaderMatrix;
_paint.Shader = shader;
if (_colorFilterAnimation != null)
{
_paint.ColorFilter = _colorFilterAnimation.Value;
}
var alpha = (byte)(parentAlpha / 255f * _opacityAnimation.Value / 100f * 255);
_paint.Alpha = alpha;
canvas.DrawPath(_path, _paint);
LottieLog.EndSection("GradientFillContent.Draw");
}
internal static void ApplyTrimPathIfNeeded(Path path, float startValue, float endValue, float offsetValue)
{
LottieLog.BeginSection("applyTrimPathIfNeeded");
PathMeasure.SetPath(path);
var length = PathMeasure.Length;
if (startValue == 1f && endValue == 0f)
{
LottieLog.EndSection("applyTrimPathIfNeeded");
return;
}
if (length < 1f || Math.Abs(endValue - startValue - 1) < .01)
{
LottieLog.EndSection("applyTrimPathIfNeeded");
return;
}
var start = length * startValue;
var end = length * endValue;
var newStart = Math.Min(start, end);
var newEnd = Math.Max(start, end);
var offset = offsetValue * length;
newStart += offset;
newEnd += offset;
// If the trim path has rotated around the path, we need to shift it back.
if (newStart >= length && newEnd >= length)
{
newStart = MiscUtils.FloorMod(newStart, length);
newEnd = MiscUtils.FloorMod(newEnd, length);
}
if (newStart < 0)
{
newStart = MiscUtils.FloorMod(newStart, length);
}
if (newEnd < 0)
{
newEnd = MiscUtils.FloorMod(newEnd, length);
}
// If the start and end are equals, return an empty path.
if (newStart == newEnd)
{
path.Reset();
LottieLog.EndSection("applyTrimPathIfNeeded");
return;
}
if (newStart >= newEnd)
{
newStart -= length;
}
_tempPath.Reset();
PathMeasure.GetSegment(newStart, newEnd, ref _tempPath, true);
if (newEnd > length)
{
_tempPath2.Reset();
PathMeasure.GetSegment(0, newEnd % length, ref _tempPath2, true);
_tempPath.AddPath(_tempPath2);
}
else if (newStart < 0)
{
_tempPath2.Reset();
PathMeasure.GetSegment(length + newStart, length, ref _tempPath2, true);
_tempPath.AddPath(_tempPath2);
}
path.Set(_tempPath);
LottieLog.EndSection("applyTrimPathIfNeeded");
}
