showImageWithGrayToBlackSlider [1018738]

< > BotCompany Repo | #1018738 // showImageWithGrayToBlackSlider

JavaX fragment (include)

static ImageSurface showImageWithGrayToBlackSlider(S name, final BufferedImage img) {
  final ImageSurface is = showImage(name, img);
  final SimpleLiveValue<Float> lv = floatLiveValue();
  
  Runnable update = r {
    float darkening = min(lv!, 0.99f);
    float factor = 1/(1-darkening);
    float offset = (-darkening*255)*factor;
    //print("factor=" + factor + ", offset=" + offset);
    is.setImage(rgbContrastAndBrightness(factor, offset, img));
  };
  
  lv.onChange(update);
  addToWindowAndPack(is,
    withLabel("Darkening factor:", jLiveValueSliderZeroToOne(lv)));
  ret is;
}

Author comment

Began life as a copy of #1018736

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Snippet ID:

#1018738

Snippet name:

showImageWithGrayToBlackSlider

Eternal ID of this version:

#1018738/8

Text MD5:

a67e45bb68c7bce7a33aafe4a2176afc

Author:

stefan

Category:

javax / imaging / gui

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2018-10-12 12:34:01

Source code size:

605 bytes / 17 lines

Pitched / IR pitched:

No / No

Views / Downloads:

403 / 436

Version history:

7 change(s)

Referenced in:

[show references]

1	static ImageSurface showImageWithGrayToBlackSlider(S name, final BufferedImage img) {
2	final ImageSurface is = showImage(name, img);
3	final SimpleLiveValue<Float> lv = floatLiveValue();
4
5	Runnable update = r {
6	float darkening = min(lv!, 0.99f);
7	float factor = 1/(1-darkening);
8	float offset = (-darkening255)factor;
9	//print("factor=" + factor + ", offset=" + offset);
10	is.setImage(rgbContrastAndBrightness(factor, offset, img));
11	};
12
13	lv.onChange(update);
14	addToWindowAndPack(is,
15	withLabel("Darkening factor:", jLiveValueSliderZeroToOne(lv)));
16	ret is;
17	}