Doxygen Source Code Documentation
mri_colorsetup.c File Reference
#include "mrilib.h"Go to the source code of this file.
Functions | |
| MRI_IMAGE * | mri_colorsetup (int ngray, int nrr, int ngg, int nbb) |
Function Documentation
|
||||||||||||||||||||
|
Definition at line 7 of file mri_colorsetup.c. References rgbyte::b, rgbyte::g, mri_new(), MRI_RGB_PTR, and rgbyte::r. Referenced by ISQ_saver_CB().
00008 {
00009 MRI_IMAGE *im ;
00010 rgbyte *ar ;
00011 int rr,gg,bb , nn ;
00012 float rac,gac,bac ;
00013
00014 im = mri_new( ngray + nrr*ngg*nbb - 1 , 1 , MRI_rgb ) ;
00015 ar = (rgbyte *) MRI_RGB_PTR(im) ;
00016
00017 gac = 255.9f / ngray ; nn = 0 ; /* actually, ngray+1 levels */
00018 for( gg=0 ; gg <= ngray ; gg++,nn++ ){
00019 ar[nn].r = ar[nn].g = ar[nn].b = (byte)(gac*gg) ;
00020 }
00021
00022 rac = 255.9f/(nrr-1) ; gac = 255.9f/(ngg-1) ; bac=255.9f/(nbb-1) ;
00023
00024 for( bb=0 ; bb < nbb ; bb++ ){ /* skip the all black and */
00025 for( gg=0 ; gg < ngg ; gg++ ){ /* the all white colors */
00026 for( rr=0 ; rr < nrr ; rr++ ){
00027 if( rr==0 && gg==0 && bb==0 ) continue ;
00028 if( rr==nrr-1 && gg==ngg-1 && bb==nbb-1 ) continue ;
00029 ar[nn].r = (byte)(rac*rr) ;
00030 ar[nn].g = (byte)(gac*gg) ;
00031 ar[nn].b = (byte)(bac*bb) ; nn++ ;
00032 } } }
00033
00034 return im ;
00035 }
|
