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authormarha <marha@users.sourceforge.net>2012-11-19 10:16:38 +0100
committermarha <marha@users.sourceforge.net>2012-11-19 10:16:38 +0100
commit3744281b9ae8aa0ab86ceaee1afe8a603e3aeb2c (patch)
treef59b9749730728729691a8a1efd54dce95f0177c /libX11/src/xcms/HVCMnV.c
parent8d57b7fcb22cf1a52203ee57c745b64bba649249 (diff)
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Diffstat (limited to 'libX11/src/xcms/HVCMnV.c')
-rw-r--r--libX11/src/xcms/HVCMnV.c326
1 files changed, 163 insertions, 163 deletions
diff --git a/libX11/src/xcms/HVCMnV.c b/libX11/src/xcms/HVCMnV.c
index 14e569932..10a9f857a 100644
--- a/libX11/src/xcms/HVCMnV.c
+++ b/libX11/src/xcms/HVCMnV.c
@@ -1,163 +1,163 @@
-
-/*
- * 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);
- }
-}
+
+/*
+ * 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);
+ }
+}