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Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
Digital Equipment Corporation
Portions Copyright \(co 1990, 1991 by
Tektronix, Inc.
Permission to use, copy, modify and distribute this documentation for
any purpose and without fee is hereby granted, provided that the above
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It is provided "as is" without express or implied warranty.
....
.EX typedef unsigned long XcmsColorFormat; /* Color Specification Format */ typedef struct { union { XcmsRGB RGB; XcmsRGBi RGBi; XcmsCIEXYZ CIEXYZ; XcmsCIEuvY CIEuvY; XcmsCIExyY CIExyY; XcmsCIELab CIELab; XcmsCIELuv CIELuv; XcmsTekHVC TekHVC; XcmsPad Pad; } spec; unsigned long pixel; XcmsColorFormat format; } XcmsColor; /* Xcms Color Structure */
.EX typedef double XcmsFloat; typedef struct { unsigned short red; /* 0x0000 to 0xffff */ unsigned short green; /* 0x0000 to 0xffff */ unsigned short blue; /* 0x0000 to 0xffff */ } XcmsRGB; /* RGB Device */
.EX typedef struct { XcmsFloat red; /* 0.0 to 1.0 */ XcmsFloat green; /* 0.0 to 1.0 */ XcmsFloat blue; /* 0.0 to 1.0 */ } XcmsRGBi; /* RGB Intensity */
.EX typedef struct { XcmsFloat X; XcmsFloat Y; /* 0.0 to 1.0 */ XcmsFloat Z; } XcmsCIEXYZ; /* CIE XYZ */
.EX typedef struct { XcmsFloat u_prime; /* 0.0 to ~0.6 */ XcmsFloat v_prime; /* 0.0 to ~0.6 */ XcmsFloat Y; /* 0.0 to 1.0 */ } XcmsCIEuvY; /* CIE u'v'Y */
.EX typedef struct { XcmsFloat x; /* 0.0 to ~.75 */ XcmsFloat y; /* 0.0 to ~.85 */ XcmsFloat Y; /* 0.0 to 1.0 */ } XcmsCIExyY; /* CIE xyY */
.EX typedef struct { XcmsFloat L_star; /* 0.0 to 100.0 */ XcmsFloat a_star; XcmsFloat b_star; } XcmsCIELab; /* CIE L*a*b* */
.EX typedef struct { XcmsFloat L_star; /* 0.0 to 100.0 */ XcmsFloat u_star; XcmsFloat v_star; } XcmsCIELuv; /* CIE L*u*v* */
.EX typedef struct { XcmsFloat H; /* 0.0 to 360.0 */ XcmsFloat V; /* 0.0 to 100.0 */ XcmsFloat C; /* 0.0 to 100.0 */ } XcmsTekHVC; /* TekHVC */
.EX typedef struct { XcmsFloat pad0; XcmsFloat pad1; XcmsFloat pad2; XcmsFloat pad3; } XcmsPad; /* four doubles */
\*(xL