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diff --git a/generic/tkbltGraphBar.C b/generic/tkbltGraphBar.C
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+++ b/generic/tkbltGraphBar.C
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+/*
+ * Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+ * This code has been modified under the terms listed below and is made
+ * available under the same terms.
+ */
+
+/*
+ * Copyright 1991-2004 George A Howlett.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+
+#include "tkbltGraphBar.h"
+#include "tkbltGraphOp.h"
+
+#include "tkbltGrAxis.h"
+#include "tkbltGrXAxisOp.h"
+#include "tkbltGrPen.h"
+#include "tkbltGrPenOp.h"
+#include "tkbltGrPenBar.h"
+#include "tkbltGrPenLine.h"
+#include "tkbltGrElem.h"
+#include "tkbltGrElemOp.h"
+#include "tkbltGrElemBar.h"
+#include "tkbltGrElemLine.h"
+#include "tkbltGrMarker.h"
+#include "tkbltGrLegd.h"
+#include "tkbltGrHairs.h"
+#include "tkbltGrPostscript.h"
+#include "tkbltGrDef.h"
+
+using namespace Blt;
+
+// BarGroup
+
+BarGroup::BarGroup()
+{
+ nSegments =0;
+ xAxis =NULL;
+ yAxis =NULL;
+ sum =0;
+ count =0;
+ lastY =0;
+ index =0;
+}
+
+// BarGraph
+
+static const char* barmodeObjOption[] =
+ {"normal", "stacked", "aligned", "overlap", NULL};
+static const char* searchModeObjOption[] = {"points", "traces", "auto", NULL};
+static const char* searchAlongObjOption[] = {"x", "y", "both", NULL};
+
+static Tk_OptionSpec optionSpecs[] = {
+ {TK_OPTION_DOUBLE, "-aspect", "aspect", "Aspect",
+ "0", -1, Tk_Offset(BarGraphOptions, aspect), 0, NULL, RESET},
+ {TK_OPTION_BORDER, "-background", "background", "Background",
+ STD_NORMAL_BACKGROUND, -1, Tk_Offset(BarGraphOptions, normalBg),
+ 0, NULL, CACHE},
+ {TK_OPTION_STRING_TABLE, "-barmode", "barMode", "BarMode",
+ "normal", -1, Tk_Offset(BarGraphOptions, barMode),
+ 0, &barmodeObjOption, RESET},
+ {TK_OPTION_DOUBLE, "-barwidth", "barWidth", "BarWidth",
+ ".9", -1, Tk_Offset(BarGraphOptions, barWidth), 0, NULL, RESET},
+ {TK_OPTION_DOUBLE, "-baseline", "baseline", "Baseline",
+ "0", -1, Tk_Offset(BarGraphOptions, baseline), 0, NULL, RESET},
+ {TK_OPTION_SYNONYM, "-bd", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-borderwidth", 0},
+ {TK_OPTION_SYNONYM, "-bg", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-background", 0},
+ {TK_OPTION_SYNONYM, "-bm", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-bottommargin", 0},
+ {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
+ STD_BORDERWIDTH, -1, Tk_Offset(BarGraphOptions, borderWidth),
+ 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-bottommargin", "bottomMargin", "BottomMargin",
+ "0", -1, Tk_Offset(BarGraphOptions, bottomMargin.reqSize), 0, NULL, RESET},
+ {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor",
+ "crosshair", -1, Tk_Offset(BarGraphOptions, cursor),
+ TK_OPTION_NULL_OK, NULL, 0},
+ {TK_OPTION_SYNONYM, "-fg", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-foreground", 0},
+ {TK_OPTION_FONT, "-font", "font", "Font",
+ STD_FONT_MEDIUM, -1, Tk_Offset(BarGraphOptions, titleTextStyle.font),
+ 0, NULL, RESET},
+ {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground",
+ STD_NORMAL_FOREGROUND, -1, Tk_Offset(BarGraphOptions, titleTextStyle.color),
+ 0, NULL, CACHE},
+ {TK_OPTION_SYNONYM, "-halo", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-searchhalo", 0},
+ {TK_OPTION_PIXELS, "-height", "height", "Height",
+ "4i", -1, Tk_Offset(BarGraphOptions, reqHeight), 0, NULL, RESET},
+ {TK_OPTION_COLOR, "-highlightbackground", "highlightBackground",
+ "HighlightBackground",
+ STD_NORMAL_BACKGROUND, -1, Tk_Offset(BarGraphOptions, highlightBgColor),
+ 0, NULL, CACHE},
+ {TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
+ STD_NORMAL_FOREGROUND, -1, Tk_Offset(BarGraphOptions, highlightColor),
+ 0, NULL, CACHE},
+ {TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness",
+ "HighlightThickness",
+ "2", -1, Tk_Offset(BarGraphOptions, highlightWidth), 0, NULL, RESET},
+ {TK_OPTION_BOOLEAN, "-invertxy", "invertXY", "InvertXY",
+ "no", -1, Tk_Offset(BarGraphOptions, inverted), 0, NULL, RESET},
+ {TK_OPTION_JUSTIFY, "-justify", "justify", "Justify",
+ "center", -1, Tk_Offset(BarGraphOptions, titleTextStyle.justify),
+ 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-leftmargin", "leftMargin", "Margin",
+ "0", -1, Tk_Offset(BarGraphOptions, leftMargin.reqSize), 0, NULL, RESET},
+ {TK_OPTION_SYNONYM, "-lm", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-leftmargin", 0},
+ {TK_OPTION_BORDER, "-plotbackground", "plotbackground", "PlotBackground",
+ STD_NORMAL_BACKGROUND, -1, Tk_Offset(BarGraphOptions, plotBg),
+ 0, NULL, CACHE},
+ {TK_OPTION_PIXELS, "-plotborderwidth", "plotBorderWidth", "PlotBorderWidth",
+ STD_BORDERWIDTH, -1, Tk_Offset(BarGraphOptions, plotBW), 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-plotpadx", "plotPadX", "PlotPad",
+ "0", -1, Tk_Offset(BarGraphOptions, xPad), 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-plotpady", "plotPadY", "PlotPad",
+ "0", -1, Tk_Offset(BarGraphOptions, yPad), 0, NULL, RESET},
+ {TK_OPTION_RELIEF, "-plotrelief", "plotRelief", "Relief",
+ "flat", -1, Tk_Offset(BarGraphOptions, plotRelief), 0, NULL, RESET},
+ {TK_OPTION_RELIEF, "-relief", "relief", "Relief",
+ "flat", -1, Tk_Offset(BarGraphOptions, relief), 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-rightmargin", "rightMargin", "Margin",
+ "0", -1, Tk_Offset(BarGraphOptions, rightMargin.reqSize), 0, NULL, RESET},
+ {TK_OPTION_SYNONYM, "-rm", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-rightmargin", 0},
+ {TK_OPTION_PIXELS, "-searchhalo", "searchhalo", "SearchHalo",
+ "2m", -1, Tk_Offset(BarGraphOptions, search.halo), 0, NULL, 0},
+ {TK_OPTION_STRING_TABLE, "-searchmode", "searchMode", "SearchMode",
+ "points", -1, Tk_Offset(BarGraphOptions, search.mode),
+ 0, &searchModeObjOption, 0},
+ {TK_OPTION_STRING_TABLE, "-searchalong", "searchAlong", "SearchAlong",
+ "both", -1, Tk_Offset(BarGraphOptions, search.along),
+ 0, &searchAlongObjOption, 0},
+ {TK_OPTION_BOOLEAN, "-stackaxes", "stackAxes", "StackAxes",
+ "no", -1, Tk_Offset(BarGraphOptions, stackAxes), 0, NULL, RESET},
+ {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus",
+ NULL, -1, Tk_Offset(BarGraphOptions, takeFocus),
+ TK_OPTION_NULL_OK, NULL, 0},
+ {TK_OPTION_STRING, "-title", "title", "Title",
+ NULL, -1, Tk_Offset(BarGraphOptions, title), TK_OPTION_NULL_OK, NULL, RESET},
+ {TK_OPTION_SYNONYM, "-tm", NULL, NULL,
+ NULL, 0, -1, 0, (ClientData)"-topmargin", 0},
+ {TK_OPTION_PIXELS, "-topmargin", "topMargin", "TopMargin",
+ "0", -1, Tk_Offset(BarGraphOptions, topMargin.reqSize), 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-width", "width", "Width",
+ "5i", -1, Tk_Offset(BarGraphOptions, reqWidth), 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-plotwidth", "plotWidth", "PlotWidth",
+ "0", -1, Tk_Offset(BarGraphOptions, reqPlotWidth), 0, NULL, RESET},
+ {TK_OPTION_PIXELS, "-plotheight", "plotHeight", "PlotHeight",
+ "0", -1, Tk_Offset(BarGraphOptions, reqPlotHeight), 0, NULL, RESET},
+ {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0}
+};
+
+// Create
+
+BarGraph::BarGraph(ClientData clientData, Tcl_Interp* interp,
+ int objc, Tcl_Obj* const objv[])
+ : Graph(clientData, interp, objc, objv)
+{
+ // problems so far?
+ if (!valid_)
+ return;
+
+ ops_ = (BarGraphOptions*)calloc(1, sizeof(BarGraphOptions));
+ BarGraphOptions* ops = (BarGraphOptions*)ops_;
+
+ Tk_SetClass(tkwin_, "Barchart");
+
+ barGroups_ =NULL;
+ nBarGroups_ =0;
+ maxBarSetSize_ =0;
+ Tcl_InitHashTable(&setTable_, sizeof(BarSetKey)/sizeof(int));
+
+ ops->bottomMargin.site = MARGIN_BOTTOM;
+ ops->leftMargin.site = MARGIN_LEFT;
+ ops->topMargin.site = MARGIN_TOP;
+ ops->rightMargin.site = MARGIN_RIGHT;
+
+ ops->titleTextStyle.anchor = TK_ANCHOR_N;
+ ops->titleTextStyle.color =NULL;
+ ops->titleTextStyle.font =NULL;
+ ops->titleTextStyle.angle =0;
+ ops->titleTextStyle.justify =TK_JUSTIFY_LEFT;
+
+ optionTable_ = Tk_CreateOptionTable(interp_, optionSpecs);
+ if ((Tk_InitOptions(interp_, (char*)ops_, optionTable_, tkwin_) != TCL_OK) || (GraphObjConfigure(this, interp_, objc-2, objv+2) != TCL_OK)) {
+ valid_ =0;
+ return;
+ }
+
+ // do this last after Tk_SetClass set
+ legend_ = new Legend(this);
+ crosshairs_ = new Crosshairs(this);
+ postscript_ = new Postscript(this);
+
+ if (createPen("active", 0, NULL) != TCL_OK) {
+ valid_ =0;
+ return;
+ }
+
+ if (createAxes() != TCL_OK) {
+ valid_ =0;
+ return;
+ }
+
+ adjustAxes();
+
+ Tcl_SetStringObj(Tcl_GetObjResult(interp_), Tk_PathName(tkwin_), -1);
+}
+
+BarGraph::~BarGraph()
+{
+ destroyBarSets();
+}
+
+int BarGraph::configure()
+{
+ BarGraphOptions* ops = (BarGraphOptions*)ops_;
+ // Don't allow negative bar widths. Reset to an arbitrary value (0.1)
+ if (ops->barWidth <= 0.0f)
+ ops->barWidth = 0.9f;
+
+ return Graph::configure();
+}
+
+int BarGraph::createPen(const char* penName, int objc, Tcl_Obj* const objv[])
+{
+ int isNew;
+ Tcl_HashEntry *hPtr =
+ Tcl_CreateHashEntry(&penTable_, penName, &isNew);
+ if (!isNew) {
+ Tcl_AppendResult(interp_, "pen \"", penName, "\" already exists in \"",
+ Tk_PathName(tkwin_), "\"", (char *)NULL);
+ return TCL_ERROR;
+ }
+
+ Pen* penPtr = new BarPen(this, penName, hPtr);
+ if (!penPtr)
+ return TCL_ERROR;
+
+ Tcl_SetHashValue(hPtr, penPtr);
+
+ if ((Tk_InitOptions(interp_, (char*)penPtr->ops(), penPtr->optionTable(), tkwin_) != TCL_OK) || (PenObjConfigure(this, penPtr, interp_, objc-4, objv+4) != TCL_OK)) {
+ delete penPtr;
+ return TCL_ERROR;
+ }
+
+ flags |= RESET;
+ eventuallyRedraw();
+
+ return TCL_OK;
+}
+
+int BarGraph::createElement(int objc, Tcl_Obj* const objv[])
+{
+ char *name = Tcl_GetString(objv[3]);
+ if (name[0] == '-') {
+ Tcl_AppendResult(interp_, "name of element \"", name,
+ "\" can't start with a '-'", NULL);
+ return TCL_ERROR;
+ }
+
+ int isNew;
+ Tcl_HashEntry* hPtr =
+ Tcl_CreateHashEntry(&elements_.table, name, &isNew);
+ if (!isNew) {
+ Tcl_AppendResult(interp_, "element \"", name,
+ "\" already exists in \"", Tcl_GetString(objv[0]),
+ "\"", NULL);
+ return TCL_ERROR;
+ }
+
+ Element* elemPtr = new BarElement(this, name, hPtr);
+ if (!elemPtr)
+ return TCL_ERROR;
+
+ Tcl_SetHashValue(hPtr, elemPtr);
+
+ if ((Tk_InitOptions(interp_, (char*)elemPtr->ops(), elemPtr->optionTable(), tkwin_) != TCL_OK) || (ElementObjConfigure(elemPtr, interp_, objc-4, objv+4) != TCL_OK)) {
+ delete elemPtr;
+ return TCL_ERROR;
+ }
+
+ elemPtr->link = elements_.displayList->append(elemPtr);
+
+ return TCL_OK;
+}
+
+void BarGraph::mapElements()
+{
+ BarGraphOptions* ops = (BarGraphOptions*)ops_;
+ if ((BarMode)ops->barMode != INFRONT)
+ resetBarSets();
+
+ Graph::mapElements();
+}
+
+void BarGraph::resetAxes()
+{
+ BarGraphOptions* ops = (BarGraphOptions*)ops_;
+
+ /* FIXME: This should be called whenever the display list of
+ * elements change. Maybe yet another flag INIT_STACKS to
+ * indicate that the element display list has changed.
+ * Needs to be done before the axis limits are set.
+ */
+ initBarSets();
+ if (((BarMode)ops->barMode == STACKED) && (nBarGroups_ > 0))
+ computeBarStacks();
+
+ Graph::resetAxes();
+}
+
+void BarGraph::initBarSets()
+{
+ BarGraphOptions* ops = (BarGraphOptions*)ops_;
+
+ // Free resources associated with a previous frequency table. This includes
+ // the array of frequency information and the table itself
+ destroyBarSets();
+ if ((BarMode)ops->barMode == INFRONT)
+ return;
+
+ // Initialize a hash table and fill it with unique abscissas. Keep track
+ // of the frequency of each x-coordinate and how many abscissas have
+ // duplicate mappings.
+ Tcl_HashTable setTable;
+ Tcl_InitHashTable(&setTable, sizeof(BarSetKey)/sizeof(int));
+ int nSegs =0;
+
+ for (ChainLink* link = Chain_FirstLink(elements_.displayList);
+ link; link = Chain_NextLink(link)) {
+ BarElement* bePtr = (BarElement*)Chain_GetValue(link);
+ BarElementOptions* ops = (BarElementOptions*)bePtr->ops();
+ if (ops->hide)
+ continue;
+
+ nSegs++;
+ if (ops->coords.x) {
+ int nPoints = ops->coords.x->nValues();
+ for (double *x=ops->coords.x->values_, *xend=x+nPoints; x<xend; x++) {
+ BarSetKey key;
+ key.value =*x;
+ key.xAxis =ops->xAxis;
+ key.yAxis =NULL;
+
+ int isNew;
+ Tcl_HashEntry* hhPtr =
+ Tcl_CreateHashEntry(&setTable, (char*)&key, &isNew);
+ Tcl_HashTable* tablePtr;
+ if (isNew) {
+ tablePtr = (Tcl_HashTable*)malloc(sizeof(Tcl_HashTable));
+ Tcl_InitHashTable(tablePtr, TCL_STRING_KEYS);
+ Tcl_SetHashValue(hhPtr, tablePtr);
+ }
+ else
+ tablePtr = (Tcl_HashTable*)Tcl_GetHashValue(hhPtr);
+
+ const char* name = ops->groupName ? ops->groupName : ops->yAxis->name_;
+ Tcl_HashEntry* hhPtr2 = Tcl_CreateHashEntry(tablePtr, name, &isNew);
+ size_t count =1;
+ if (!isNew) {
+ count = (size_t)Tcl_GetHashValue(hhPtr2);
+ count++;
+ }
+ Tcl_SetHashValue(hhPtr2, count);
+ }
+ }
+ }
+
+ // no bar elements to be displayed
+ if (setTable.numEntries == 0)
+ return;
+
+ int sum =0;
+ int max =0;
+ Tcl_HashSearch iter;
+ for (Tcl_HashEntry *hhPtr = Tcl_FirstHashEntry(&setTable, &iter); hhPtr;
+ hhPtr = Tcl_NextHashEntry(&iter)) {
+ BarSetKey* keyPtr = (BarSetKey*)Tcl_GetHashKey(&setTable, hhPtr);
+ Tcl_HashTable* tablePtr = (Tcl_HashTable*)Tcl_GetHashValue(hhPtr);
+
+ int isNew;
+ Tcl_HashEntry* hPtr =
+ Tcl_CreateHashEntry(&setTable_, (char*)keyPtr, &isNew);
+ Tcl_SetHashValue(hPtr, tablePtr);
+
+ if (max < tablePtr->numEntries)
+ max = tablePtr->numEntries; // # of stacks in group
+ sum += tablePtr->numEntries;
+ }
+
+ Tcl_DeleteHashTable(&setTable);
+
+ if (sum > 0) {
+ barGroups_ = new BarGroup[sum];
+ BarGroup* groupPtr = barGroups_;
+ Tcl_HashSearch iter;
+ for (Tcl_HashEntry* hPtr = Tcl_FirstHashEntry(&setTable_, &iter);
+ hPtr; hPtr = Tcl_NextHashEntry(&iter)) {
+ BarSetKey* keyPtr = (BarSetKey*)Tcl_GetHashKey(&setTable_, hPtr);
+ Tcl_HashTable* tablePtr = (Tcl_HashTable*)Tcl_GetHashValue(hPtr);
+
+ size_t xcount = 0;
+ Tcl_HashSearch iter2;
+ for (Tcl_HashEntry *hPtr2 = Tcl_FirstHashEntry(tablePtr, &iter2);
+ hPtr2; hPtr2 = Tcl_NextHashEntry(&iter2)) {
+ size_t count = (size_t)Tcl_GetHashValue(hPtr2);
+ groupPtr->nSegments = count;
+ groupPtr->xAxis = keyPtr->xAxis;
+ groupPtr->yAxis = keyPtr->yAxis;
+ groupPtr->index = xcount++;
+ Tcl_SetHashValue(hPtr2, groupPtr);
+
+ groupPtr++;
+ }
+ }
+ }
+
+ maxBarSetSize_ = max;
+ nBarGroups_ = sum;
+}
+
+void BarGraph::destroyBarSets()
+{
+ if (barGroups_) {
+ delete [] barGroups_;
+ barGroups_ = NULL;
+ }
+
+ nBarGroups_ = 0;
+ Tcl_HashSearch iter;
+ for (Tcl_HashEntry* hPtr=Tcl_FirstHashEntry(&setTable_, &iter); hPtr;
+ hPtr=Tcl_NextHashEntry(&iter)) {
+ Tcl_HashTable* tablePtr = (Tcl_HashTable*)Tcl_GetHashValue(hPtr);
+ Tcl_DeleteHashTable(tablePtr);
+ free(tablePtr);
+ }
+
+ Tcl_DeleteHashTable(&setTable_);
+ Tcl_InitHashTable(&setTable_, sizeof(BarSetKey)/sizeof(int));
+}
+
+void BarGraph::resetBarSets()
+{
+ for (BarGroup *gp = barGroups_, *gend = gp + nBarGroups_; gp < gend; gp++) {
+ gp->lastY = 0.0;
+ gp->count = 0;
+ }
+}
+
+void BarGraph::computeBarStacks()
+{
+ BarGraphOptions* ops = (BarGraphOptions*)ops_;
+
+ if (((BarMode)ops->barMode != STACKED) || (nBarGroups_ == 0))
+ return;
+
+ // Initialize the stack sums to zero
+ for (BarGroup *gp = barGroups_, *gend = gp + nBarGroups_; gp < gend; gp++)
+ gp->sum = 0.0;
+
+ // Consider each bar x-y coordinate. Add the ordinates of duplicate
+ // abscissas
+
+ for (ChainLink* link = Chain_FirstLink(elements_.displayList); link;
+ link = Chain_NextLink(link)) {
+ BarElement* bePtr = (BarElement*)Chain_GetValue(link);
+ BarElementOptions* ops = (BarElementOptions*)bePtr->ops();
+ if (ops->hide)
+ continue;
+
+ if (ops->coords.x && ops->coords.y) {
+ for (double *x=ops->coords.x->values_, *y=ops->coords.y->values_,
+ *xend=x+ops->coords.x->nValues(); x<xend; x++, y++) {
+ BarSetKey key;
+ key.value =*x;
+ key.xAxis =ops->xAxis;
+ key.yAxis =NULL;
+ Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&setTable_, (char*)&key);
+ if (!hPtr)
+ continue;
+
+ Tcl_HashTable *tablePtr = (Tcl_HashTable*)Tcl_GetHashValue(hPtr);
+ const char *name = ops->groupName ? ops->groupName : ops->yAxis->name_;
+ hPtr = Tcl_FindHashEntry(tablePtr, name);
+ if (!hPtr)
+ continue;
+
+ BarGroup *groupPtr = (BarGroup*)Tcl_GetHashValue(hPtr);
+ groupPtr->sum += *y;
+ }
+ }
+ }
+}
+