STRUCTURES

The structure for XcmsColor contains:

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 */

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 */

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 */

typedef struct {
        XcmsFloat X;
        XcmsFloat Y;    /* 0.0 to 1.0 */
        XcmsFloat Z;
} XcmsCIEXYZ;           /* CIE XYZ */

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 */

typedef struct {
        XcmsFloat x;    /* 0.0 to ~.75 */
        XcmsFloat y;    /* 0.0 to ~.85 */
        XcmsFloat Y;    /* 0.0 to 1.0 */
} XcmsCIExyY;           /* CIE xyY */

typedef struct {
        XcmsFloat L_star;       /* 0.0 to 100.0 */
        XcmsFloat a_star;
        XcmsFloat b_star;
} XcmsCIELab;           /* CIE L*a*b* */

typedef struct {
        XcmsFloat L_star;       /* 0.0 to 100.0 */
        XcmsFloat u_star;
        XcmsFloat v_star;
} XcmsCIELuv;           /* CIE L*u*v* */

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 */

typedef struct {
        XcmsFloat pad0;
        XcmsFloat pad1;
        XcmsFloat pad2;
        XcmsFloat pad3;
} XcmsPad;              /* four doubles */

DESCRIPTION

The XcmsColor structure contains a union of substructures, each supporting color specification encoding for a particular color space.