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actually creating the alpha image

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This commit is contained in:
LarsBrubaker 2021-07-27 09:38:41 -07:00
parent f214741c95
commit 5bb82bf230
2 changed files with 105 additions and 38 deletions
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138
MatterControlLib/DesignTools/Operations/Image/ImageToPathObject3D_2.cs
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@ -77,9 +77,13 @@ namespace MatterHackers.MatterControl.DesignTools
{
get
{
var imageObject = (ImageObject3D)Children.Where(i => i is ImageObject3D).FirstOrDefault();
if (IntensityHistogram.AlphaImage == null)
{
IntensityHistogram.SourceImage = SourceImage;
IntensityHistogram.RebuildAlphaImage();
}
return imageObject.Image;
return IntensityHistogram.AlphaImage;
}
set
@ -223,7 +227,7 @@ namespace MatterHackers.MatterControl.DesignTools
(reporter, cancellationToken) =>
{
var progressStatus = new ProgressStatus();
var thresholdFunction = new AlphaThresholdFunction(0, 1);
var thresholdFunction = new AlphaThresholdFunction(0, 1);
this.GenerateMarchingSquaresAndLines(
(progress0to1, status) =>
{
@ -259,42 +263,104 @@ namespace MatterHackers.MatterControl.DesignTools
return new Color(buffer[offset + 2], buffer[offset + 1], buffer[offset + 0], buffer[offset + 3]);
}
[JsonIgnore]
public ImageBuffer AlphaImage { get; private set; }
[JsonIgnore]
public ImageBuffer SourceImage { get; set; }
public void RebuildAlphaImage()
{
if (SourceImage == null)
{
return;
}
// build the alpha image
if (AlphaImage == null)
{
AlphaImage = new ImageBuffer(SourceImage.Width, SourceImage.Height);
}
else if (AlphaImage.Width != SourceImage.Width
|| AlphaImage.Height != SourceImage.Height)
{
AlphaImage.Allocate(SourceImage.Width, SourceImage.Height, SourceImage.BitDepth, SourceImage.GetRecieveBlender());
}
byte GetAlphaFromIntensity(byte r, byte g, byte b)
{
// return (color.Red0To1 * 0.2989) + (color.Green0To1 * 0.1140) + (color.Blue0To1 * 0.5870);
var alpha = (r * 76 + g * 29 + b * 150) / 255;
if (alpha < RangeStart)
{
return 0;
}
else if (alpha > RangeEnd)
{
return 0;
}
else
{
var s1 = (byte)Math.Min(255, ((alpha - RangeStart) * 255 / (RangeEnd - RangeStart)));
var s2 = (double)(alpha - RangeStart) / (double)(RangeEnd - RangeStart);
return s1;
}
}
byte[] sourceBuffer = SourceImage.GetBuffer();
byte[] destBuffer = AlphaImage.GetBuffer();
for (int y = 0; y < SourceImage.Height; y++)
{
int imageOffset = SourceImage.GetBufferOffsetY(y);
for (int x = 0; x < SourceImage.Width; x++)
{
int imageBufferOffsetWithX = imageOffset + x * 4;
var r = sourceBuffer[imageBufferOffsetWithX + 0];
var g = sourceBuffer[imageBufferOffsetWithX + 1];
var b = sourceBuffer[imageBufferOffsetWithX + 2];
destBuffer[imageBufferOffsetWithX + 0] = r;
destBuffer[imageBufferOffsetWithX + 1] = g;
destBuffer[imageBufferOffsetWithX + 2] = b;
destBuffer[imageBufferOffsetWithX + 3] = GetAlphaFromIntensity(r, g, b);
}
}
AlphaImage.MarkImageChanged();
}
public void Recalculate(ImageBuffer image)
{
if (_histogramRawCache == null)
// build the histogram cache
_histogramRawCache = new ImageBuffer(256, 100);
var counts = new int[_histogramRawCache.Width];
var function = new MapOnMaxIntensity(RangeStart, RangeEnd);
byte[] buffer = image.GetBuffer();
for (int y = 0; y < image.Height; y++)
{
_histogramRawCache = new ImageBuffer(256, 100);
if (image != null)
int imageBufferOffset = image.GetBufferOffsetY(y);
for (int x = 0; x < image.Width; x++)
{
var counts = new int[_histogramRawCache.Width];
var function = new MapOnMaxIntensity(RangeStart, RangeEnd);
byte[] buffer = image.GetBuffer();
int strideInBytes = image.StrideInBytes();
for (int y = 0; y < image.Height; y++)
{
int imageBufferOffset = image.GetBufferOffsetY(y);
int thresholdBufferOffset = y * image.Width;
for (int x = 0; x < image.Width; x++)
{
int imageBufferOffsetWithX = imageBufferOffset + x * 4;
var color = GetRGBA(buffer, imageBufferOffsetWithX);
counts[(int)(function.Transform(color) * (_histogramRawCache.Width - 1))]++;
}
}
double max = counts.Select((value, index) => new { value, index })
.OrderByDescending(vi => vi.value)
.First().value;
var graphics2D2 = _histogramRawCache.NewGraphics2D();
graphics2D2.Clear(Color.White);
for (int i = 0; i < 256; i++)
{
graphics2D2.Line(i, 0, i, Easing.Exponential.Out(counts[i] / max) * _histogramRawCache.Height, Color.Black);
}
int imageBufferOffsetWithX = imageBufferOffset + x * 4;
var color = GetRGBA(buffer, imageBufferOffsetWithX);
counts[(int)(function.Transform(color) * (_histogramRawCache.Width - 1))]++;
}
}
double max = counts.Select((value, index) => new { value, index })
.OrderByDescending(vi => vi.value)
.First().value;
var graphics2D2 = _histogramRawCache.NewGraphics2D();
graphics2D2.Clear(Color.White);
for (int i = 0; i < 256; i++)
{
graphics2D2.Line(i, 0, i, Easing.Exponential.Out(counts[i] / max) * _histogramRawCache.Height, Color.Black);
}
}
public GuiWidget NewEditWidget(ThemeConfig theme)
@ -345,6 +411,7 @@ namespace MatterHackers.MatterControl.DesignTools
RangeStart += offset / _histogramRawCache.Width;
RangeStart = Math.Max(0, Math.Min(RangeStart, RangeEnd));
leftHandle.Position = new Vector2(RangeStart * _histogramRawCache.Width, 0);
RebuildAlphaImage();
}
};
leftHandle.MouseUp += (s, e) =>
@ -378,6 +445,7 @@ namespace MatterHackers.MatterControl.DesignTools
RangeEnd += offset / _histogramRawCache.Width;
RangeEnd = Math.Min(1, Math.Max(RangeStart, RangeEnd));
rightHandle.Position = new Vector2(RangeEnd * _histogramRawCache.Width + handleWidth, 0);
RebuildAlphaImage();
}
};
rightHandle.MouseUp += (s, e) =>
@ -397,9 +465,5 @@ namespace MatterHackers.MatterControl.DesignTools
var background = _histogramRawCache;
graphics2D.FillRectangle(rangeStart * background.Width, 0, rangeEnd * background.Width, background.Height, theme.PrimaryAccentColor.WithAlpha(60));
}
public void ProcessOutputImage()
{
}
}
}