MantisBT - VTK
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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 
Project
Type
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);
Steps To Reproduce
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Issue History
Date ModifiedUsernameFieldChange
2008-11-30 09:24Mathieu MalaterreAssigned ToMathieu Malaterre => François Bertel
2008-11-30 20:22François BertelAssigned ToFrançois Bertel =>
2011-06-16 13:11Zack GalbreathCategory => (No Category)
2016-08-12 09:54Kitware RobotNote Added: 0036755
2016-08-12 09:54Kitware RobotStatusexpired => closed
2016-08-12 09:54Kitware RobotResolutionopen => moved
2016-08-12 09:54Kitware RobotAssigned To => Kitware Robot

Notes
(0001790)
Mathieu Malaterre   
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   
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   
2016-08-12 09:54   
Resolving issue as `moved`.

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