#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "Xlibint.h"
#include "Xcmsint.h"
#include <math.h>
#include "Cv.h"
#define MAXBISECTCOUNT 100
Status
XcmsTekHVCClipVC (
XcmsCCC ccc,
XcmsColor *pColors_in_out,
unsigned int nColors,
unsigned int i,
Bool *pCompressed)
{
Status retval;
XcmsCCCRec myCCC;
XcmsColor *pColor;
XcmsColor hvc_max;
XcmsRGBi rgb_max;
int nCount, nMaxCount, nI, nILast;
XcmsFloat Chroma, Value, bestChroma, bestValue, nT, saveDist, tmpDist;
if (XcmsAddColorSpace(&XcmsTekHVCColorSpace) == XcmsFailure) {
return(XcmsFailure);
}
memcpy ((char *)&myCCC, (char *)ccc, sizeof(XcmsCCCRec));
myCCC.clientWhitePt.format = XcmsUndefinedFormat;
myCCC.gamutCompProc = (XcmsCompressionProc)NULL;
pColor = pColors_in_out + i;
if (ccc->visual->class < StaticColor &&
FunctionSetOfCCC(ccc) != (XPointer) &XcmsLinearRGBFunctionSet) {
_XcmsDIConvertColors(ccc, pColor, &ccc->pPerScrnInfo->screenWhitePt,
1, XcmsTekHVCFormat);
pColor->spec.TekHVC.H = pColor->spec.TekHVC.C = 0.0;
_XcmsDIConvertColors(ccc, pColor, &ccc->pPerScrnInfo->screenWhitePt,
1, XcmsCIEXYZFormat);
if (pCompressed) {
*(pCompressed + i) = True;
}
return(XcmsSuccess);
} else {
if (_XcmsDIConvertColors(&myCCC, pColor,
&myCCC.pPerScrnInfo->screenWhitePt, 1, XcmsTekHVCFormat)
== XcmsFailure) {
return(XcmsFailure);
}
if (!_XcmsTekHVC_CheckModify(pColor)) {
return (XcmsFailure);
}
memcpy((char *)&hvc_max, (char *)pColor, sizeof(XcmsColor));
if (_XcmsTekHVCQueryMaxVCRGB (&myCCC, hvc_max.spec.TekHVC.H, &hvc_max,
&rgb_max) == XcmsFailure) {
return (XcmsFailure);
}
if (pColor->spec.TekHVC.V == hvc_max.spec.TekHVC.V) {
pColor->spec.TekHVC.C = hvc_max.spec.TekHVC.C;
retval = _XcmsDIConvertColors(&myCCC, pColor,
&myCCC.pPerScrnInfo->screenWhitePt, 1, XcmsCIEXYZFormat);
}
if (pColor->spec.TekHVC.V < hvc_max.spec.TekHVC.V) {
Chroma = pColor->spec.TekHVC.C;
Value = pColor->spec.TekHVC.V;
pColor->spec.TekHVC.C =
(Value + (hvc_max.spec.TekHVC.C / hvc_max.spec.TekHVC.V * Chroma)) /
((hvc_max.spec.TekHVC.V / hvc_max.spec.TekHVC.C) +
(hvc_max.spec.TekHVC.C / hvc_max.spec.TekHVC.V));
if (pColor->spec.TekHVC.C >= hvc_max.spec.TekHVC.C) {
pColor->spec.TekHVC.C = hvc_max.spec.TekHVC.C;
pColor->spec.TekHVC.V = hvc_max.spec.TekHVC.V;
} else {
pColor->spec.TekHVC.V = pColor->spec.TekHVC.C *
hvc_max.spec.TekHVC.V / hvc_max.spec.TekHVC.C;
}
retval = _XcmsDIConvertColors(&myCCC, pColor,
&myCCC.pPerScrnInfo->screenWhitePt, 1, XcmsCIEXYZFormat);
if (retval != XcmsFailure && pCompressed != NULL) {
*(pCompressed + i) = True;
}
return (retval);
}
nMaxCount = MAXBISECTCOUNT;
nI = nMaxCount / 2;
bestValue = Value = pColor->spec.TekHVC.V;
bestChroma = Chroma = pColor->spec.TekHVC.C;
saveDist = (XcmsFloat) XCMS_SQRT ((double) (((Chroma - hvc_max.spec.TekHVC.C) *
(Chroma - hvc_max.spec.TekHVC.C)) +
((Value - hvc_max.spec.TekHVC.V) *
(Value - hvc_max.spec.TekHVC.V))));
for (nCount = 0; nCount < nMaxCount; nCount++) {
nT = (XcmsFloat) nI / (XcmsFloat) nMaxCount;
pColor->spec.RGBi.red = rgb_max.red * (1.0 - nT) + nT;
pColor->spec.RGBi.green = rgb_max.green * (1.0 - nT) + nT;
pColor->spec.RGBi.blue = rgb_max.blue * (1.0 - nT) + nT;
pColor->format = XcmsRGBiFormat;
if (_XcmsConvertColorsWithWhitePt(&myCCC, pColor,
&myCCC.pPerScrnInfo->screenWhitePt, 1, XcmsTekHVCFormat,
(Bool *) NULL)
== XcmsFailure) {
return (XcmsFailure);
}
if (!_XcmsTekHVC_CheckModify(pColor)) {
return (XcmsFailure);
}
tmpDist = (XcmsFloat) XCMS_SQRT ((double)
(((Chroma - pColor->spec.TekHVC.C) *
(Chroma - pColor->spec.TekHVC.C)) +
((Value - pColor->spec.TekHVC.V) *
(Value - pColor->spec.TekHVC.V))));
nILast = nI;
if (tmpDist > saveDist) {
nI /= 2;
} else {
nI = (nMaxCount + nI) / 2;
saveDist = tmpDist;
bestValue = pColor->spec.TekHVC.V;
bestChroma = pColor->spec.TekHVC.C;
}
if (nI == nILast || nI == 0) {
break;
}
}
if (bestChroma >= hvc_max.spec.TekHVC.C) {
pColor->spec.TekHVC.C = hvc_max.spec.TekHVC.C;
pColor->spec.TekHVC.V = hvc_max.spec.TekHVC.V;
} else {
pColor->spec.TekHVC.C = bestChroma;
pColor->spec.TekHVC.V = bestValue;
}
if (!_XcmsTekHVC_CheckModify(pColor)) {
return (XcmsFailure);
}
retval = _XcmsDIConvertColors(&myCCC, pColor,
&myCCC.pPerScrnInfo->screenWhitePt, 1, XcmsCIEXYZFormat);
if (retval != XcmsFailure && pCompressed != NULL) {
*(pCompressed + i) = True;
}
return(retval);
}
}