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< > BotCompany Repo | #1034397 // ImageDiffAsPNG

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (7277L/41K).

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srecord noeq ImageDiffAsPNG(Rect r, byte[] pngData) is G2Drawable {
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  public void drawOn(Graphics2D g) {
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    var image = diffImage();
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    if (image != null)
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      g.drawImage(image, r.x, r.y, null);
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  }
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  BufferedImage diffImage() {
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    ret imageFromBytes(pngData);
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  }
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  *(BufferedImage img1, BufferedImage img2) {
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    this(ImageDifferenceAsTransparentOverlay(img1, img2));
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  }
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  *(ImageDifferenceAsTransparentOverlay diff) {
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    r = diff.changedBounds();
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    if (!empty(r))
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      pngData = toPNG(clipBufferedImage(diff!, r));
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  }
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  bool isEmpty() { ret main empty(r); }
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  toString {
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    ret isEmpty() ? "No change"
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      : "Changed area: " + r + ", png bytes: " + n2(l(pngData))
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      + ", bits/pixel: " + formatDouble(bitsPerPixel(), 1);
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  }
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  double bitsPerPixel() {
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    ret doubleRatio(l(pngData)*8L, area(r));
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  }
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}

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Snippet ID: #1034397
Snippet name: ImageDiffAsPNG
Eternal ID of this version: #1034397/10
Text MD5: 81d4282ba8ade86ba6e4f8d2ad990ffa
Transpilation MD5: 5cf1fa55c3ce506dc327c0219b3745f2
Author: stefan
Category: javax / imaging
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2022-02-05 03:43:48
Source code size: 871 bytes / 33 lines
Pitched / IR pitched: No / No
Views / Downloads: 110 / 200
Version history: 9 change(s)
Referenced in: [show references]