[ViewVC] Diff of: radiance/ray/src/common/color.h

Comparing ray/src/common/color.h (file contents):
Revision 1.1 by greg, Thu Feb 2 10:34:14 1989 UTC vs.
Revision 2.18 by greg, Sat Feb 22 02:07:22 2003 UTC

-<
+/* Copyright (c) 1986 Regents of the University of California */
-<
-<
+/* SCCSid "$SunId$ LBL" */
-<
->
+/* RCSid: $Id$ */
+/*
+ *  color.h - header for routines using pixel color values.
-<
+ *     12/31/85
->
+ *  Must be included after X11 headers, since they declare a BYTE type.
+ *  Two color representations are used, one for calculation and
+ *  another for storage.  Calculation is done with three floats
+ *  three single byte mantissas and a common exponent.
+ */
-+
+/* ====================================================================
-+
+ * The Radiance Software License, Version 1.0
-+
+ *
-+
+ * Copyright (c) 1990 - 2002 The Regents of the University of California,
-+
+ * through Lawrence Berkeley National Laboratory.   All rights reserved.
-+
+ *
-+
+ * Redistribution and use in source and binary forms, with or without
-+
+ * modification, are permitted provided that the following conditions
-+
+ * are met:
-+
+ *
-+
+ * 1. Redistributions of source code must retain the above copyright
-+
+ *         notice, this list of conditions and the following disclaimer.
-+
+ *
-+
+ * 2. Redistributions in binary form must reproduce the above copyright
-+
+ *       notice, this list of conditions and the following disclaimer in
-+
+ *       the documentation and/or other materials provided with the
-+
+ *       distribution.
-+
+ *
-+
+ * 3. The end-user documentation included with the redistribution,
-+
+ *           if any, must include the following acknowledgment:
-+
+ *             "This product includes Radiance software
-+
+ *                 (http://radsite.lbl.gov/)
-+
+ *                 developed by the Lawrence Berkeley National Laboratory
-+
+ *               (http://www.lbl.gov/)."
-+
+ *       Alternately, this acknowledgment may appear in the software itself,
-+
+ *       if and wherever such third-party acknowledgments normally appear.
-+
+ *
-+
+ * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
-+
+ *       and "The Regents of the University of California" must
-+
+ *       not be used to endorse or promote products derived from this
-+
+ *       software without prior written permission. For written
-+
+ *       permission, please contact [email protected].
-+
+ *
-+
+ * 5. Products derived from this software may not be called "Radiance",
-+
+ *       nor may "Radiance" appear in their name, without prior written
-+
+ *       permission of Lawrence Berkeley National Laboratory.
-+
+ *
-+
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
-+
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-+
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-+
+ * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
-+
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-+
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-+
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-+
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-+
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-+
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
-+
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-+
+ * SUCH DAMAGE.
-+
+ * ====================================================================
-+
+ *
-+
+ * This software consists of voluntary contributions made by many
-+
+ * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
-+
+ * information on Lawrence Berkeley National Laboratory, please see
-+
+ * <http://www.lbl.gov/>.
-+
+ */
-+
-+
+#include <stdio.h>
-+
+#include <stdlib.h>
-+
-+
+#ifdef __cplusplus
-+
+extern "C" {
-+
+#endif
-+
+#define  RED            0
+#define  GRN            1
+#define  BLU            2
-<
+#define  EXP            3
->
+#define  CIEX           0       /* or, if input is XYZ... */
->
+#define  CIEY           1
->
+#define  CIEZ           2
->
+#define  EXP            3       /* exponent same for either format */
+#define  COLXS          128     /* excess used for exponent */
-+
+#define  WHT            3       /* used for RGBPRIMS type */
-<
+typedef unsigned char  BYTE;    /* 8-bit unsigned integer */
->
+#undef  BYTE
->
+#define  BYTE   unsigned char   /* 8-bit unsigned integer */
-<
+typedef BYTE  COLR[4];          /* red, green, blue, exponent */
->
+typedef BYTE  COLR[4];          /* red, green, blue (or X,Y,Z), exponent */
-+
+typedef float  COLOR[3];        /* red, green, blue (or X,Y,Z) */
-+
-+
+typedef float  RGBPRIMS[4][2];  /* (x,y) chromaticities for RGBW */
-+
+typedef float  (*RGBPRIMP)[2];  /* pointer to RGBPRIMS array */
-+
-+
+typedef float  COLORMAT[3][3];  /* color coordinate conversion matrix */
-+
+#define  copycolr(c1,c2)        (c1[0]=c2[0],c1[1]=c2[1], \
+                                c1[2]=c2[2],c1[3]=c2[3])
-–
+typedef float  COLOR[3];        /* red, green, blue */
-–
+#define  colval(col,pri)        ((col)[pri])
+#define  setcolor(col,r,g,b)    ((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b))
+#define  multcolor(c1,c2)       ((c1)[0]*=(c2)[0],(c1)[1]*=(c2)[1],(c1)[2]*=(c2)[2])
-<
+#define  bright(col)            (.30*(col)[RED]+.59*(col)[GRN]+.11*(col)[BLU])
->
+#ifdef  NTSC
->
+#define  CIE_x_r                0.670           /* standard NTSC primaries */
->
+#define  CIE_y_r                0.330
->
+#define  CIE_x_g                0.210
->
+#define  CIE_y_g                0.710
->
+#define  CIE_x_b                0.140
->
+#define  CIE_y_b                0.080
->
+#define  CIE_x_w                0.3333          /* use true white */
->
+#define  CIE_y_w                0.3333
->
+#else
->
+#define  CIE_x_r                0.640           /* nominal CRT primaries */
->
+#define  CIE_y_r                0.330
->
+#define  CIE_x_g                0.290
->
+#define  CIE_y_g                0.600
->
+#define  CIE_x_b                0.150
->
+#define  CIE_y_b                0.060
->
+#define  CIE_x_w                0.3333          /* use true white */
->
+#define  CIE_y_w                0.3333
->
+#endif
-+
+#define  STDPRIMS       {{CIE_x_r,CIE_y_r},{CIE_x_g,CIE_y_g}, \
-+
+                                {CIE_x_b,CIE_y_b},{CIE_x_w,CIE_y_w}}
-+
-+
+#define CIE_D           (       CIE_x_r*(CIE_y_g - CIE_y_b) + \
-+
+                                CIE_x_g*(CIE_y_b - CIE_y_r) + \
-+
+                                CIE_x_b*(CIE_y_r - CIE_y_g)     )
-+
+#define CIE_C_rD        ( (1./CIE_y_w) * \
-+
+                                ( CIE_x_w*(CIE_y_g - CIE_y_b) - \
-+
+                                  CIE_y_w*(CIE_x_g - CIE_x_b) + \
-+
+                                  CIE_x_g*CIE_y_b - CIE_x_b*CIE_y_g     ) )
-+
+#define CIE_C_gD        ( (1./CIE_y_w) * \
-+
+                                ( CIE_x_w*(CIE_y_b - CIE_y_r) - \
-+
+                                  CIE_y_w*(CIE_x_b - CIE_x_r) - \
-+
+                                  CIE_x_r*CIE_y_b + CIE_x_b*CIE_y_r     ) )
-+
+#define CIE_C_bD        ( (1./CIE_y_w) * \
-+
+                                ( CIE_x_w*(CIE_y_r - CIE_y_g) - \
-+
+                                  CIE_y_w*(CIE_x_r - CIE_x_g) + \
-+
+                                  CIE_x_r*CIE_y_g - CIE_x_g*CIE_y_r     ) )
-+
-+
+#define CIE_rf          (CIE_y_r*CIE_C_rD/CIE_D)
-+
+#define CIE_gf          (CIE_y_g*CIE_C_gD/CIE_D)
-+
+#define CIE_bf          (CIE_y_b*CIE_C_bD/CIE_D)
-+
-+
+/* As of 9-94, CIE_rf=.265074126, CIE_gf=.670114631 and CIE_bf=.064811243 */
-+
-+
+/***** The following definitions are valid for RGB colors only... *****/
-+
-+
+#define  bright(col)    (CIE_rf*(col)[RED]+CIE_gf*(col)[GRN]+CIE_bf*(col)[BLU])
-+
+#define  normbright(c)  ( ( (long)(CIE_rf*256.+.5)*(c)[RED] + \
-+
+                            (long)(CIE_gf*256.+.5)*(c)[GRN] + \
-+
+                            (long)(CIE_bf*256.+.5)*(c)[BLU] ) >> 8 )
-+
-+
+                                /* luminous efficacies over visible spectrum */
-+
+#define  MAXEFFICACY            683.            /* defined maximum at 550 nm */
-+
+#define  WHTEFFICACY            179.            /* uniform white light */
-+
+#define  D65EFFICACY            203.            /* standard illuminant D65 */
-+
+#define  INCEFFICACY            160.            /* illuminant A (incand.) */
-+
+#define  SUNEFFICACY            208.            /* illuminant B (solar dir.) */
-+
+#define  SKYEFFICACY            D65EFFICACY     /* skylight */
-+
+#define  DAYEFFICACY            D65EFFICACY     /* combined sky and solar */
-+
-+
+#define  luminance(col)         (WHTEFFICACY * bright(col))
-+
-+
+/***** ...end of stuff specific to RGB colors *****/
-+
+#define  intens(col)            ( (col)[0] > (col)[1] \
+                                ? (col)[0] > (col)[2] ? (col)[0] : (col)[2] \
+                                : (col)[1] > (col)[2] ? (col)[1] : (col)[2] )
-+
+#define  colrval(c,p)           ( (c)[EXP] ? \
-+
+                                ldexp((c)[p]+.5,(int)(c)[EXP]-(COLXS+8)) : \
-+
+. )
-+
+#define  WHTCOLOR               {1.0,1.0,1.0}
+#define  BLKCOLOR               {0.0,0.0,0.0}
+#define  WHTCOLR                {128,128,128,COLXS+1}
+#define  BLKCOLR                {0,0,0,0}
-+
-+
+                                /* picture format identifier */
-+
+#define  COLRFMT                "32-bit_rle_rgbe"
-+
+#define  CIEFMT                 "32-bit_rle_xyze"
-+
+#define  PICFMT                 "32-bit_rle_???e"       /* matches either */
-+
+#define  LPICFMT                15                      /* max format id len */
-+
-+
+                                /* macros for exposures */
-+
+#define  EXPOSSTR               "EXPOSURE="
-+
+#define  LEXPOSSTR              9
-+
+#define  isexpos(hl)            (!strncmp(hl,EXPOSSTR,LEXPOSSTR))
-+
+#define  exposval(hl)           atof((hl)+LEXPOSSTR)
-+
+#define  fputexpos(ex,fp)       fprintf(fp,"%s%e\n",EXPOSSTR,ex)
-+
-+
+                                /* macros for pixel aspect ratios */
-+
+#define  ASPECTSTR              "PIXASPECT="
-+
+#define  LASPECTSTR             10
-+
+#define  isaspect(hl)           (!strncmp(hl,ASPECTSTR,LASPECTSTR))
-+
+#define  aspectval(hl)          atof((hl)+LASPECTSTR)
-+
+#define  fputaspect(pa,fp)      fprintf(fp,"%s%f\n",ASPECTSTR,pa)
-+
-+
+                                /* macros for primary specifications */
-+
+#define  PRIMARYSTR             "PRIMARIES="
-+
+#define  LPRIMARYSTR            10
-+
+#define  isprims(hl)            (!strncmp(hl,PRIMARYSTR,LPRIMARYSTR))
-+
+#define  primsval(p,hl)         sscanf(hl+LPRIMARYSTR, \
-+
+                                        "%f %f %f %f %f %f %f %f", \
-+
+                                        &(p)[RED][CIEX],&(p)[RED][CIEY], \
-+
+                                        &(p)[GRN][CIEX],&(p)[GRN][CIEY], \
-+
+                                        &(p)[BLU][CIEX],&(p)[BLU][CIEY], \
-+
+                                        &(p)[WHT][CIEX],&(p)[WHT][CIEY])
-+
+#define  fputprims(p,fp)        fprintf(fp, \
-+
+                                "%s %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\n",\
-+
+                                        PRIMARYSTR, \
-+
+                                        (p)[RED][CIEX],(p)[RED][CIEY], \
-+
+                                        (p)[GRN][CIEX],(p)[GRN][CIEY], \
-+
+                                        (p)[BLU][CIEX],(p)[BLU][CIEY], \
-+
+                                        (p)[WHT][CIEX],(p)[WHT][CIEY])
-+
-+
+                                /* macros for color correction */
-+
+#define  COLCORSTR              "COLORCORR="
-+
+#define  LCOLCORSTR             10
-+
+#define  iscolcor(hl)           (!strncmp(hl,COLCORSTR,LCOLCORSTR))
-+
+#define  colcorval(cc,hl)       sscanf(hl+LCOLCORSTR,"%f %f %f", \
-+
+                                        &(cc)[RED],&(cc)[GRN],&(cc)[BLU])
-+
+#define  fputcolcor(cc,fp)      fprintf(fp,"%s %f %f %f\n",COLCORSTR, \
-+
+                                        (cc)[RED],(cc)[GRN],(cc)[BLU])
-+
-+
+/*
-+
+ * Conversions to and from XYZ space generally don't apply WHTEFFICACY.
-+
+ * If you need Y to be luminance (cd/m^2), this must be applied when
-+
+ * converting from radiance (watts/sr/m^2).
-+
+ */
-+
-+
+extern RGBPRIMS  stdprims;      /* standard primary chromaticities */
-+
+extern COLORMAT  rgb2xyzmat;    /* RGB to XYZ conversion matrix */
-+
+extern COLORMAT  xyz2rgbmat;    /* XYZ to RGB conversion matrix */
-+
+extern COLOR  cblack, cwhite;   /* black (0,0,0) and white (1,1,1) */
-+
-+
+#define  CGAMUT_LOWER           01
-+
+#define  CGAMUT_UPPER           02
-+
+#define  CGAMUT                 (CGAMUT_LOWER|CGAMUT_UPPER)
-+
-+
+#define  rgb_cie(xyz,rgb)       colortrans(xyz,rgb2xyzmat,rgb)
-+
-+
+#ifdef BSD
-+
+#define  cpcolormat(md,ms)      bcopy((char *)ms,(char *)md,sizeof(COLORMAT))
-+
+#else
-+
+#define  cpcolormat(md,ms)      memcpy((char *)md,(char *)ms,sizeof(COLORMAT))
-+
+#endif
-+
-+
+#ifdef NOPROTO
-+
+                                        /* defined in color.c */
-+
+extern char     *tempbuffer();
-+
+extern int      fwritecolrs();
-+
+extern int      freadcolrs();
-+
+extern int      fwritescan();
-+
+extern int      freadscan();
-+
+extern void     setcolr();
-+
+extern void     colr_color();
-+
+extern int      bigdiff();
-+
+                                        /* defined in spec_rgb.c */
-+
+extern void     spec_rgb();
-+
+extern void     spec_cie();
-+
+extern void     cie_rgb();
-+
+extern int      clipgamut();
-+
+extern void     colortrans();
-+
+extern void     multcolormat();
-+
+extern void     compxyz2rgbmat();
-+
+extern void     comprgb2xyzmat();
-+
+extern void     comprgb2rgbmat();
-+
+extern void     compxyzWBmat();
-+
+extern void     compxyz2rgbWBmat();
-+
+extern void     comprgb2xyzWBmat();
-+
+extern void     comprgb2rgbWBmat();
-+
+                                        /* defined in colrops.c */
-+
+extern int      setcolrcor();
-+
+extern int      setcolrinv();
-+
+extern int      setcolrgam();
-+
+extern int      colrs_gambs();
-+
+extern int      gambs_colrs();
-+
+extern void     shiftcolrs();
-+
+extern void     normcolrs();
-+
-+
+#else
-+
+                                        /* defined in color.c */
-+
+extern char     *tempbuffer(unsigned int len);
-+
+extern int      fwritecolrs(COLR *scanline, int len, FILE *fp);
-+
+extern int      freadcolrs(COLR *scanline, int len, FILE *fp);
-+
+extern int      fwritescan(COLOR *scanline, int len, FILE *fp);
-+
+extern int      freadscan(COLOR *scanline, int len, FILE *fp);
-+
+extern void     setcolr(COLR clr, double r, double g, double b);
-+
+extern void     colr_color(COLOR col, COLR clr);
-+
+extern int      bigdiff(COLOR c1, COLOR c2, double md);
-+
+                                        /* defined in spec_rgb.c */
-+
+extern void     spec_rgb(COLOR col, int s, int e);
-+
+extern void     spec_cie(COLOR col, int s, int e);
-+
+extern void     cie_rgb(COLOR rgb, COLOR xyz);
-+
+extern int      clipgamut(COLOR col, double brt, int gamut,
-+
+                                COLOR lower, COLOR upper);
-+
+extern void     colortrans(COLOR c2, COLORMAT mat, COLOR c1);
-+
+extern void     multcolormat(COLORMAT m3, COLORMAT m2,
-+
+                                        COLORMAT m1);
-+
+extern void     compxyz2rgbmat(COLORMAT mat, RGBPRIMS pr);
-+
+extern void     comprgb2xyzmat(COLORMAT mat, RGBPRIMS pr);
-+
+extern void     comprgb2rgbmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2);
-+
+extern void     compxyzWBmat(COLORMAT mat, float wht1[2],
-+
+                                float wht2[2]);
-+
+extern void     compxyz2rgbWBmat(COLORMAT mat, RGBPRIMS pr);
-+
+extern void     comprgb2xyzWBmat(COLORMAT mat, RGBPRIMS pr);
-+
+extern void     comprgb2rgbWBmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2);
-+
+                                        /* defined in colrops.c */
-+
+extern int      setcolrcor(double (*f)(), double a2);
-+
+extern int      setcolrinv(double (*f)(), double a2);
-+
+extern int      setcolrgam(double g);
-+
+extern int      colrs_gambs(COLR *scan, int len);
-+
+extern int      gambs_colrs(COLR *scan, int len);
-+
+extern void     shiftcolrs(COLR *scan, int len, int adjust);
-+
+extern void     normcolrs(COLR *scan, int len, int adjust);
-+
-+
+#endif
-+
-+
+#ifdef __cplusplus
-+
+}
-+
+#endif

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Comparing ray/src/common/color.h (file contents): Revision 1.1 by greg, Thu Feb 2 10:34:14 1989 UTC vs. Revision 2.18 by greg, Sat Feb 22 02:07:22 2003 UTC

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Comparing ray/src/common/color.h (file contents):
Revision 1.1 by greg, Thu Feb 2 10:34:14 1989 UTC vs.
Revision 2.18 by greg, Sat Feb 22 02:07:22 2003 UTC