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IDProjectCategoryView StatusDate SubmittedLast Update
0001402VTK(No Category)public2004-12-07 14:432016-08-12 09:54
ReporterDenis Shamonin 
Assigned ToKitware Robot 
PrioritylowSeverityfeatureReproducibilityalways
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0001402: Converting color RGB/HSV from int to double and double to int
DescriptionSome multiplatform GUI toolkits provides colors based on int RGB or HSV values (Qt for example)
http://doc.trolltech.com/3.3/qcolor.html [^]
It will be nice to have converter color RGB/HSV from int to double and double to int inside vtkMath.
Example:

  // Description:
  // Convert color RGB from int to double and double to int.
  // The input color is not modified.
  static void RGBTorgb(int RGB[3], double rgb[3])
    {
    RGBTorgb(RGB[0], RGB[1], RGB[2], rgb, rgb+1, rgb+2);
    }
  static void RGBTorgb(int R, int G, int B, double *r, double *g, double *b);
                                                                                                              
  static void rgbToRGB(double rgb[3], int RGB[3])
    {
    rgbToRGB(rgb[0], rgb[1], rgb[2], RGB, RGB+1, RGB+2);
    }
  static void rgbToRGB(double r, double g, double b, int *R, int *G, int *B);

  // Description:
  // Convert color HSV from int to double and double to int.
  // The input color is not modified.
  static void HSVTohsv(int HSV[3], double hsv[3])
    {
    HSVTohsv(HSV[0], HSV[1], HSV[2], hsv, hsv+1, hsv+2);
    }
  static void HSVTohsv(int H, int S, int V, double *h, double *s, double *v);
                                                                                                              
  static void hsvToHSV(double hsv[3], int HSV[3])
    {
    hsvToHSV(hsv[0], hsv[1], hsv[2], HSV, HSV+1, HSV+2);
    }
  static void hsvToHSV(double h, double s, double v, int *H, int *S, int *V);
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  Notes
(0001790)
Mathieu Malaterre (developer)
2004-12-09 18:47

 I quickly browse through the page but I don't understand why we should be using int instead of unsigned char. Since the value will always be within 0-255.

Any opinion ?
(0001792)
Denis Shamonin (reporter)
2004-12-10 05:23

 Agree, unsigned char looks more logical.
Also FLTK color model based on unsigned char
http://www.fltk.org/doc-1.1/drawing.html#colors [^]
(0036755)
Kitware Robot (administrator)
2016-08-12 09:54

 Resolving issue as `moved`.

This issue tracker is no longer used. Further discussion of this issue may take place in the current VTK Issues page linked in the banner at the top of this page.

 Issue History
Date Modified Username Field Change
2008-11-30 09:24 Mathieu Malaterre Assigned To Mathieu Malaterre => François Bertel
2008-11-30 20:22 François Bertel Assigned To François Bertel =>
2011-06-16 13:11 Zack Galbreath Category => (No Category)
2016-08-12 09:54 Kitware Robot Note Added: 0036755
2016-08-12 09:54 Kitware Robot Status expired => closed
2016-08-12 09:54 Kitware Robot Resolution open => moved
2016-08-12 09:54 Kitware Robot Assigned To => Kitware Robot

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