public void ApplyNegativeFilterFromFileTest()
{
// preperation
FileStream inputFile = new FileStream("..\\..\\..\\Resources\\OriginalCat.bmp", FileMode.Open, FileAccess.Read);
FileStream expectedOutputFile = new FileStream("..\\..\\..\\Resources\\NegativeFilterCat.bmp", FileMode.Open, FileAccess.Read);
byte[] temp = new byte[54];
inputFile.Read(temp, 0, 54);
BMPFileHeader bmpInfo = new BMPFileHeader(temp);
NegativeFilter image = new NegativeFilter(bmpInfo, inputFile);
// checking
image.ApplyNegativeFilter();
byte[] outputFile = new byte[bmpInfo.FileSize];
image.WriteImage(outputFile);
for (uint i = 0; i < bmpInfo.FileSize; i++)
{
Assert.IsTrue(outputFile[i] == (byte)expectedOutputFile.ReadByte());
}
inputFile.Close();
expectedOutputFile.Close();
}
public void GetNegativePixel()
{
originalPicture[0, 0] = new Pixel(100, 100, 100);
resultPicture = new NegativeFilter().ChangeImage(originalPicture, 100);
Assert.IsTrue(resultPicture[0, 0].Equals(new Pixel(155, 155, 155)));
}
private void buildChainOfFilters(out FilterChain o_ImageFilter)
{
NegativeFilter negativeFilter = new NegativeFilter();
RedFilter redFilter = new RedFilter();
GreenFilter greenFilter = new GreenFilter();
BlueFilter blueFilter = new BlueFilter();
negativeFilter.SetNextChain(redFilter);
redFilter.SetNextChain(greenFilter);
greenFilter.SetNextChain(blueFilter);
o_ImageFilter = negativeFilter;
}
public static void DoSomething(string path)
{
var image = Image.Load(path);
// Here you can select any pixel shader type in ColorInversionPixelShaderType enum
var filter = new NegativeFilter(image, ColorInversionPixelShaderType.FullInversionByBlue);
AdaptiveWorkflow workflow = new AdaptiveWorkflow();
image = workflow.AddFilter(filter);
using (FileStream fs = new FileStream(@"C:\Users\r_bon\Pictures\Camera Roll\" + Guid.NewGuid() + ".png", FileMode.OpenOrCreate))
{
image.SaveAsPng(fs);
}
}
protected override async void Render()
{
try
{
if (Source != null)
{
Debug.WriteLine(DebugTag + Name + ": Rendering...");
foreach (var change in Changes)
{
change();
}
Changes.Clear();
//blend source layer with mode overlay
var blendEffect = new BlendEffect();
blendEffect.Source = Source;// new StreamImageSource(new MemoryStream());
blendEffect.ForegroundSource = Source;
blendEffect.BlendFunction = BlendFunction.Overlay;
blendEffect.GlobalAlpha = 0.0;
var renderer = new JpegRenderer(blendEffect);
var outBuffer = await renderer.RenderAsync();
blendEffect.Dispose();
var highPassSource = new BufferImageSource(outBuffer);
var highPassFilter = new HighpassEffect(6, false, 1);
highPassFilter.Source = highPassSource;
var highPassRenderer = new JpegRenderer(highPassFilter);
var highPassOutBuffer = await highPassRenderer.RenderAsync();
highPassFilter.Dispose();
var negativeFilter = new NegativeFilter();
var filterEffect = new FilterEffect();
filterEffect.Filters = new List<IFilter>() { negativeFilter };
filterEffect.Source = new BufferImageSource(highPassOutBuffer);
var invertRenderer = new JpegRenderer(filterEffect);
var invertOutBuffer = await invertRenderer.RenderAsync();
blendEffect = new BlendEffect(Source, new BufferImageSource(invertOutBuffer), BlendFunction.Overlay, 0.5);
using (var bmpRender = new WriteableBitmapRenderer(blendEffect, TmpBitmap))
{
await bmpRender.RenderAsync();
}
TmpBitmap.Pixels.CopyTo(PreviewBitmap.Pixels, 0);
PreviewBitmap.Invalidate(); // Force a redraw
}
else
{
Debug.WriteLine(DebugTag + Name + ": Render(): No buffer set!");
}
}
catch (Exception e)
{
Debug.WriteLine(DebugTag + Name + ": Render(): " + e.Message);
}
finally
{
switch (State)
{
case States.Apply:
State = States.Wait;
break;
case States.Schedule:
State = States.Apply;
Render();
break;
default:
break;
}
}
}
