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Diffstat (limited to 'nx-X11/lib/X11/HVCMnV.c')
| -rw-r--r-- | nx-X11/lib/X11/HVCMnV.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/nx-X11/lib/X11/HVCMnV.c b/nx-X11/lib/X11/HVCMnV.c deleted file mode 100644 index 10a9f857a..000000000 --- a/nx-X11/lib/X11/HVCMnV.c +++ /dev/null @@ -1,163 +0,0 @@ - -/* - * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc. - * All Rights Reserved - * - * This file is a component of an X Window System-specific implementation - * of Xcms based on the TekColor Color Management System. TekColor is a - * trademark of Tektronix, Inc. The term "TekHVC" designates a particular - * color space that is the subject of U.S. Patent No. 4,985,853 (equivalent - * foreign patents pending). Permission is hereby granted to use, copy, - * modify, sell, and otherwise distribute this software and its - * documentation for any purpose and without fee, provided that: - * - * 1. This copyright, permission, and disclaimer notice is reproduced in - * all copies of this software and any modification thereof and in - * supporting documentation; - * 2. Any color-handling application which displays TekHVC color - * cooordinates identifies these as TekHVC color coordinates in any - * interface that displays these coordinates and in any associated - * documentation; - * 3. The term "TekHVC" is always used, and is only used, in association - * with the mathematical derivations of the TekHVC Color Space, - * including those provided in this file and any equivalent pathways and - * mathematical derivations, regardless of digital (e.g., floating point - * or integer) representation. - * - * Tektronix makes no representation about the suitability of this software - * for any purpose. It is provided "as is" and with all faults. - * - * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE, - * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - * PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY - * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF - * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE. - * - * NAME - * TekHVCMnV.c - * - * DESCRIPTION - * Source for XcmsTekHVCQueryMinV gamut boundary querying routine. - * - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "Xlibint.h" -#include "Xcmsint.h" -#include "Cv.h" - -/* - * DEFINES - */ -#define EPS 0.001 - - -/************************************************************************ - * * - * PUBLIC ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * XcmsTekHVCQueryMinV - Compute minimum value for hue and chroma - * - * SYNOPSIS - */ -Status -XcmsTekHVCQueryMinV ( - XcmsCCC ccc, - XcmsFloat hue, - XcmsFloat chroma, - XcmsColor *pColor_return) - -/* - * DESCRIPTION - * Return the minimum value for a specific hue, and the - * corresponding chroma. The input color specification - * may be in any format, however output is in XcmsTekHVCFormat. - * - * Since this routine works with the value within - * pColor_return intermediate results may be returned - * even though it may be invalid. - * - * ASSUMPTIONS - * This routine assumes that the white point associated with - * the color specification is the Screen White Point. The - * Screen White Point will also be associated with the - * returned color specification. - * - * RETURNS - * XcmsFailure - Failure - * XcmsSuccess - Succeeded with no modifications - * - */ -{ - XcmsCCCRec myCCC; - XcmsColor tmp; - XcmsColor max_vc; - - /* - * Check Arguments - */ - if (ccc == NULL || pColor_return == NULL) { - return(XcmsFailure); - } - - /* - * Insure TekHVC installed - */ - if (XcmsAddColorSpace(&XcmsTekHVCColorSpace) == XcmsFailure) { - return(XcmsFailure); - } - - /* Use my own CCC */ - memcpy ((char *)&myCCC, (char *)ccc, sizeof(XcmsCCCRec)); - myCCC.clientWhitePt.format = XcmsUndefinedFormat;/* inherit screen white pt */ - myCCC.gamutCompProc = (XcmsCompressionProc)NULL;/* no gamut comp func */ - - tmp.spec.TekHVC.H = hue; - tmp.spec.TekHVC.V = 100.0; - tmp.spec.TekHVC.C = chroma; - tmp.pixel = pColor_return->pixel; - tmp.format = XcmsTekHVCFormat; - - - /* Check for a valid HVC */ - if (!_XcmsTekHVC_CheckModify (&tmp)) { - return(XcmsFailure); - } - - /* Step 1: compute the maximum value and chroma for this hue. */ - /* This copy may be overkill but it preserves the pixel etc. */ - memcpy((char *)&max_vc, (char *)&tmp, sizeof(XcmsColor)); - if (_XcmsTekHVCQueryMaxVCRGB (&myCCC, max_vc.spec.TekHVC.H, &max_vc, - (XcmsRGBi *)NULL) == XcmsFailure) { - return(XcmsFailure); - } - - /* Step 2: find the intersection with the maximum hvc and chroma line. */ - if (tmp.spec.TekHVC.C > max_vc.spec.TekHVC.C + EPS) { - /* If the chroma is to large then return maximum hvc. */ - tmp.spec.TekHVC.C = max_vc.spec.TekHVC.C; - tmp.spec.TekHVC.V = max_vc.spec.TekHVC.V; - } else { - tmp.spec.TekHVC.V = tmp.spec.TekHVC.C * - max_vc.spec.TekHVC.V / max_vc.spec.TekHVC.C; - if (tmp.spec.TekHVC.V > max_vc.spec.TekHVC.V) { - tmp.spec.TekHVC.V = max_vc.spec.TekHVC.V; - } else if (tmp.spec.TekHVC.V < 0.0) { - tmp.spec.TekHVC.V = tmp.spec.TekHVC.C = 0.0; - } - } - if (_XcmsTekHVC_CheckModify (&tmp)) { - memcpy ((char *) pColor_return, (char *) &tmp, sizeof (XcmsColor)); - return(XcmsSuccess); - } else { - return(XcmsFailure); - } -} |