﻿/*
* Copyright (c) 2014 Microsoft Mobile
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

using Lumia.Imaging;
using Lumia.Imaging.Adjustments;
using Lumia.Imaging.Compositing;
using System.Collections.Generic;
using Windows.Foundation;

namespace Lumia.Imaging.Extras.Effects.DepthOfField.Internal
{
	public class FocusObjectKernelMapGenerator
	{
		public static IImageProvider Generate(IImageProvider objectMaskSource, LinearGradient gradient, Size size, IReadOnlyList<ILensBlurKernel> kernels)
		{
			var backgroundSource = new GradientImageSource(size, gradient);
            var blendEffect = new BlendEffect(backgroundSource, objectMaskSource, BlendFunction.Lighten);
            return new IndexRemappingEffect(blendEffect, kernels.Count + 2);
		}
	}
}
