diff options
Diffstat (limited to 'tkblt/generic/tkbltGrElemLine.C')
| -rw-r--r-- | tkblt/generic/tkbltGrElemLine.C | 2405 |
1 files changed, 0 insertions, 2405 deletions
diff --git a/tkblt/generic/tkbltGrElemLine.C b/tkblt/generic/tkbltGrElemLine.C deleted file mode 100644 index f8ec8f7..0000000 --- a/tkblt/generic/tkbltGrElemLine.C +++ /dev/null @@ -1,2405 +0,0 @@ -/* - * 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 (c) 1993 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 <float.h> -#include <stdlib.h> -#include <string.h> - -#include <cmath> - -#include "tkbltGraph.h" -#include "tkbltGrElemLine.h" -#include "tkbltGrElemOption.h" -#include "tkbltGrAxis.h" -#include "tkbltGrMisc.h" -#include "tkbltGrDef.h" -#include "tkbltConfig.h" -#include "tkbltGrPSOutput.h" -#include "tkbltInt.h" - -using namespace Blt; - -#define SEARCH_X 0 -#define SEARCH_Y 1 -#define SEARCH_BOTH 2 - -#define SEARCH_POINTS 0 // closest data point. -#define SEARCH_TRACES 1 // closest point on trace. -#define SEARCH_AUTO 2 // traces if linewidth is > 0 and more than one - -#define MIN3(a,b,c) (((a)<(b))?(((a)<(c))?(a):(c)):(((b)<(c))?(b):(c))) -#define PointInRegion(e,x,y) (((x) <= (e)->right) && ((x) >= (e)->left) && ((y) <= (e)->bottom) && ((y) >= (e)->top)) - -#define BROKEN_TRACE(dir,last,next) (((dir == INCREASING)&&(next < last)) || ((dir == DECREASING)&&(next > last))) -#define DRAW_SYMBOL() (symbolInterval_==0||(symbolCounter_%symbolInterval_)==0) - -static const char* symbolMacros[] = - {"Li", "Sq", "Ci", "Di", "Pl", "Cr", "Sp", "Sc", "Tr", "Ar", "Bm", NULL}; - -// OptionSpecs - -static const char* smoothObjOption[] = - {"linear", "step", "cubic", "quadratic", "catrom", NULL}; - -static const char* penDirObjOption[] = - {"increasing", "decreasing", "both", NULL}; - -static Tk_ObjCustomOption styleObjOption = - { - "styles", StyleSetProc, StyleGetProc, StyleRestoreProc, StyleFreeProc, - (ClientData)sizeof(LineStyle) - }; - -extern Tk_ObjCustomOption penObjOption; -extern Tk_ObjCustomOption pairsObjOption; -extern Tk_ObjCustomOption valuesObjOption; -extern Tk_ObjCustomOption xAxisObjOption; -extern Tk_ObjCustomOption yAxisObjOption; - -static Tk_OptionSpec optionSpecs[] = { - {TK_OPTION_CUSTOM, "-activepen", "activePen", "ActivePen", - "active", -1, Tk_Offset(LineElementOptions, activePenPtr), - TK_OPTION_NULL_OK, &penObjOption, LAYOUT}, - {TK_OPTION_BORDER, "-areabackground", "areaBackground", "AreaBackground", - NULL, -1, Tk_Offset(LineElementOptions, fillBg), - TK_OPTION_NULL_OK, NULL, LAYOUT}, - {TK_OPTION_CUSTOM, "-bindtags", "bindTags", "BindTags", - "all", -1, Tk_Offset(LineElementOptions, tags), - TK_OPTION_NULL_OK, &listObjOption, 0}, - {TK_OPTION_COLOR, "-color", "color", "Color", - STD_NORMAL_FOREGROUND, -1, - Tk_Offset(LineElementOptions, builtinPen.traceColor), 0, NULL, CACHE}, - {TK_OPTION_CUSTOM, "-dashes", "dashes", "Dashes", - NULL, -1, Tk_Offset(LineElementOptions, builtinPen.traceDashes), - TK_OPTION_NULL_OK, &dashesObjOption, CACHE}, - {TK_OPTION_CUSTOM, "-data", "data", "Data", - NULL, -1, Tk_Offset(LineElementOptions, coords), - TK_OPTION_NULL_OK, &pairsObjOption, RESET}, - {TK_OPTION_COLOR, "-errorbarcolor", "errorBarColor", "ErrorBarColor", - NULL, -1, Tk_Offset(LineElementOptions, builtinPen.errorBarColor), - TK_OPTION_NULL_OK, NULL, CACHE}, - {TK_OPTION_PIXELS,"-errorbarwidth", "errorBarWidth", "ErrorBarWidth", - "1", -1, Tk_Offset(LineElementOptions, builtinPen.errorBarLineWidth), - 0, NULL, CACHE}, - {TK_OPTION_PIXELS, "-errorbarcap", "errorBarCap", "ErrorBarCap", - "0", -1, Tk_Offset(LineElementOptions, builtinPen.errorBarCapWidth), - 0, NULL, LAYOUT}, - {TK_OPTION_COLOR, "-fill", "fill", "Fill", - NULL, -1, Tk_Offset(LineElementOptions, builtinPen.symbol.fillColor), - TK_OPTION_NULL_OK, NULL, CACHE}, - {TK_OPTION_BOOLEAN, "-hide", "hide", "Hide", - "no", -1, Tk_Offset(LineElementOptions, hide), 0, NULL, LAYOUT}, - {TK_OPTION_STRING, "-label", "label", "Label", - NULL, -1, Tk_Offset(LineElementOptions, label), - TK_OPTION_NULL_OK | TK_OPTION_DONT_SET_DEFAULT, NULL, LAYOUT}, - {TK_OPTION_RELIEF, "-legendrelief", "legendRelief", "LegendRelief", - "flat", -1, Tk_Offset(LineElementOptions, legendRelief), 0, NULL, LAYOUT}, - {TK_OPTION_PIXELS, "-linewidth", "lineWidth", "LineWidth", - "1", -1, Tk_Offset(LineElementOptions, builtinPen.traceWidth), - 0, NULL, CACHE}, - {TK_OPTION_CUSTOM, "-mapx", "mapX", "MapX", - "x", -1, Tk_Offset(LineElementOptions, xAxis), 0, &xAxisObjOption, RESET}, - {TK_OPTION_CUSTOM, "-mapy", "mapY", "MapY", - "y", -1, Tk_Offset(LineElementOptions, yAxis), 0, &yAxisObjOption, RESET}, - {TK_OPTION_INT, "-maxsymbols", "maxSymbols", "MaxSymbols", - "0", -1, Tk_Offset(LineElementOptions, reqMaxSymbols), 0, NULL, CACHE}, - {TK_OPTION_COLOR, "-offdash", "offDash", "OffDash", - NULL, -1, Tk_Offset(LineElementOptions, builtinPen.traceOffColor), - TK_OPTION_NULL_OK, NULL, CACHE}, - {TK_OPTION_COLOR, "-outline", "outline", "Outline", - NULL, -1, Tk_Offset(LineElementOptions, builtinPen.symbol.outlineColor), - TK_OPTION_NULL_OK, NULL, CACHE}, - {TK_OPTION_PIXELS, "-outlinewidth", "outlineWidth", "OutlineWidth", - "1", -1, Tk_Offset(LineElementOptions, builtinPen.symbol.outlineWidth), - 0, NULL, CACHE}, - {TK_OPTION_CUSTOM, "-pen", "pen", "Pen", - NULL, -1, Tk_Offset(LineElementOptions, normalPenPtr), - TK_OPTION_NULL_OK, &penObjOption, LAYOUT}, - {TK_OPTION_PIXELS, "-pixels", "pixels", "Pixels", - "0.1i", -1, Tk_Offset(LineElementOptions, builtinPen.symbol.size), - 0, NULL, LAYOUT}, - {TK_OPTION_DOUBLE, "-reduce", "reduce", "Reduce", - "0", -1, Tk_Offset(LineElementOptions, rTolerance), 0, NULL, RESET}, - {TK_OPTION_BOOLEAN, "-scalesymbols", "scaleSymbols", "ScaleSymbols", - "yes", -1, Tk_Offset(LineElementOptions, scaleSymbols), 0, NULL, LAYOUT}, - {TK_OPTION_STRING_TABLE, "-showerrorbars", "showErrorBars", "ShowErrorBars", - "both", -1, Tk_Offset(LineElementOptions, builtinPen.errorBarShow), - 0, &fillObjOption, LAYOUT}, - {TK_OPTION_STRING_TABLE, "-showvalues", "showValues", "ShowValues", - "none", -1, Tk_Offset(LineElementOptions, builtinPen.valueShow), - 0, &fillObjOption, CACHE}, - {TK_OPTION_STRING_TABLE, "-smooth", "smooth", "Smooth", - "linear", -1, Tk_Offset(LineElementOptions, reqSmooth), - 0, &smoothObjOption, LAYOUT}, - {TK_OPTION_CUSTOM, "-styles", "styles", "Styles", - "", -1, Tk_Offset(LineElementOptions, stylePalette), - 0, &styleObjOption, RESET}, - {TK_OPTION_STRING_TABLE, "-symbol", "symbol", "Symbol", - "none", -1, Tk_Offset(LineElementOptions, builtinPen.symbol), - 0, &symbolObjOption, CACHE}, - {TK_OPTION_STRING_TABLE, "-trace", "trace", "Trace", - "both", -1, Tk_Offset(LineElementOptions, penDir), - 0, &penDirObjOption, RESET}, - {TK_OPTION_ANCHOR, "-valueanchor", "valueAnchor", "ValueAnchor", - "s", -1, Tk_Offset(LineElementOptions, builtinPen.valueStyle.anchor), - 0, NULL, CACHE}, - {TK_OPTION_COLOR, "-valuecolor", "valueColor", "ValueColor", - STD_NORMAL_FOREGROUND,-1, - Tk_Offset(LineElementOptions, builtinPen.valueStyle.color), - 0, NULL, CACHE}, - {TK_OPTION_FONT, "-valuefont", "valueFont", "ValueFont", - STD_FONT_SMALL, -1, - Tk_Offset(LineElementOptions, builtinPen.valueStyle.font), - 0, NULL, CACHE}, - {TK_OPTION_STRING, "-valueformat", "valueFormat", "ValueFormat", - "%g", -1, Tk_Offset(LineElementOptions, builtinPen.valueFormat), - TK_OPTION_NULL_OK, NULL, CACHE}, - {TK_OPTION_DOUBLE, "-valuerotate", "valueRotate", "ValueRotate", - "0", -1, Tk_Offset(LineElementOptions, builtinPen.valueStyle.angle), - 0, NULL, CACHE}, - {TK_OPTION_CUSTOM, "-weights", "weights", "Weights", - NULL, -1, Tk_Offset(LineElementOptions, w), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_SYNONYM, "-x", NULL, NULL, - NULL, 0, -1, 0, (ClientData)"-xdata", 0}, - {TK_OPTION_CUSTOM, "-xdata", "xData", "XData", - NULL, -1, Tk_Offset(LineElementOptions, coords.x), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_CUSTOM, "-xerror", "xError", "XError", - NULL, -1, Tk_Offset(LineElementOptions, xError), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_CUSTOM, "-xhigh", "xHigh", "XHigh", - NULL, -1, Tk_Offset(LineElementOptions, xHigh), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_CUSTOM, "-xlow", "xLow", "XLow", - NULL, -1, Tk_Offset(LineElementOptions, xLow), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_SYNONYM, "-y", NULL, NULL, - NULL, 0, -1, 0, (ClientData)"-ydata", 0}, - {TK_OPTION_CUSTOM, "-ydata", "yData", "YData", - NULL, -1, Tk_Offset(LineElementOptions, coords.y), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_CUSTOM, "-yerror", "yError", "YError", - NULL, -1, Tk_Offset(LineElementOptions, yError), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_CUSTOM, "-yhigh", "yHigh", "YHigh", - NULL, -1, Tk_Offset(LineElementOptions, yHigh), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_CUSTOM, "-ylow", "yLow", "YLow", - NULL, -1, Tk_Offset(LineElementOptions, yLow), - TK_OPTION_NULL_OK, &valuesObjOption, RESET}, - {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0} -}; - -LineElement::LineElement(Graph* graphPtr, const char* name, Tcl_HashEntry* hPtr) - : Element(graphPtr, name, hPtr) -{ - smooth_ = LINEAR; - fillPts_ =NULL; - nFillPts_ = 0; - - symbolPts_.points =NULL; - symbolPts_.length =0; - symbolPts_.map =NULL; - activePts_.points =NULL; - activePts_.length =0; - activePts_.map =NULL; - - xeb_.segments =NULL; - xeb_.map =NULL; - xeb_.length =0; - yeb_.segments =NULL; - yeb_.map =NULL; - yeb_.length =0; - - symbolInterval_ =0; - symbolCounter_ =0; - traces_ =NULL; - - ops_ = (LineElementOptions*)calloc(1, sizeof(LineElementOptions)); - LineElementOptions* ops = (LineElementOptions*)ops_; - ops->elemPtr = (Element*)this; - - builtinPenPtr = new LinePen(graphPtr, "builtin", &ops->builtinPen); - ops->builtinPenPtr = builtinPenPtr; - - optionTable_ = Tk_CreateOptionTable(graphPtr->interp_, optionSpecs); - - ops->stylePalette = new Chain(); - // this is an option and will be freed via Tk_FreeConfigOptions - // By default an element's name and label are the same - ops->label = Tcl_Alloc(strlen(name)+1); - if (name) - strcpy((char*)ops->label,(char*)name); - - Tk_InitOptions(graphPtr->interp_, (char*)&(ops->builtinPen), - builtinPenPtr->optionTable(), graphPtr->tkwin_); -} - -LineElement::~LineElement() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - delete builtinPenPtr; - - reset(); - - if (ops->stylePalette) { - freeStylePalette(ops->stylePalette); - delete ops->stylePalette; - } - - delete [] fillPts_; -} - -int LineElement::configure() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - if (builtinPenPtr->configure() != TCL_OK) - return TCL_ERROR; - - // Point to the static normal/active pens if no external pens have been - // selected. - ChainLink* link = Chain_FirstLink(ops->stylePalette); - if (!link) { - link = new ChainLink(sizeof(LineStyle)); - ops->stylePalette->linkAfter(link, NULL); - } - LineStyle* stylePtr = (LineStyle*)Chain_GetValue(link); - stylePtr->penPtr = NORMALPEN(ops); - - return TCL_OK; -} - -void LineElement::map() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - if (!link) - return; - - reset(); - if (!ops->coords.x || !ops->coords.y || - !ops->coords.x->nValues() || !ops->coords.y->nValues()) - return; - - MapInfo mi; - getScreenPoints(&mi); - mapSymbols(&mi); - - if (nActiveIndices_ > 0) - mapActiveSymbols(); - - // Map connecting line segments if they are to be displayed. - smooth_ = (Smoothing)ops->reqSmooth; - if ((mi.nScreenPts > 1) && (ops->builtinPen.traceWidth > 0)) { - // Do smoothing if necessary. This can extend the coordinate array, - // so both mi.points and mi.nPoints may change. - switch (smooth_) { - case STEP: - generateSteps(&mi); - break; - - case CUBIC: - case QUADRATIC: - // Can't interpolate with less than three points - if (mi.nScreenPts < 3) - smooth_ = LINEAR; - else - generateSpline(&mi); - break; - - case CATROM: - // Can't interpolate with less than three points - if (mi.nScreenPts < 3) - smooth_ = LINEAR; - else - generateParametricSpline(&mi); - break; - - default: - break; - } - if (ops->rTolerance > 0.0) - reducePoints(&mi, ops->rTolerance); - - if (ops->fillBg) - mapFillArea(&mi); - - mapTraces(&mi); - } - delete [] mi.screenPts; - delete [] mi.map; - - // Set the symbol size of all the pen styles - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle* stylePtr = (LineStyle*)Chain_GetValue(link); - LinePen* penPtr = (LinePen *)stylePtr->penPtr; - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - int size = scaleSymbol(penOps->symbol.size); - stylePtr->symbolSize = size; - stylePtr->errorBarCapWidth = penOps->errorBarCapWidth; - } - - LineStyle** styleMap = (LineStyle**)StyleMap(); - if (((ops->yHigh && ops->yHigh->nValues() > 0) && - (ops->yLow && ops->yLow->nValues() > 0)) || - ((ops->xHigh && ops->xHigh->nValues() > 0) && - (ops->xLow && ops->xLow->nValues() > 0)) || - (ops->xError && ops->xError->nValues() > 0) || - (ops->yError && ops->yError->nValues() > 0)) { - mapErrorBars(styleMap); - } - - mergePens(styleMap); - delete [] styleMap; -} - -void LineElement::extents(Region2d *extsPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - extsPtr->top = extsPtr->left = DBL_MAX; - extsPtr->bottom = extsPtr->right = -DBL_MAX; - - if (!ops->coords.x || !ops->coords.y || - !ops->coords.x->nValues() || !ops->coords.y->nValues()) - return; - int np = NUMBEROFPOINTS(ops); - - extsPtr->right = ops->coords.x->max(); - AxisOptions* axisxops = (AxisOptions*)ops->xAxis->ops(); - if ((ops->coords.x->min() <= 0.0) && (axisxops->logScale)) - extsPtr->left = FindElemValuesMinimum(ops->coords.x, DBL_MIN); - else - extsPtr->left = ops->coords.x->min(); - - extsPtr->bottom = ops->coords.y->max(); - AxisOptions* axisyops = (AxisOptions*)ops->yAxis->ops(); - if ((ops->coords.y->min() <= 0.0) && (axisyops->logScale)) - extsPtr->top = FindElemValuesMinimum(ops->coords.y, DBL_MIN); - else - extsPtr->top = ops->coords.y->min(); - - // Correct the data limits for error bars - if (ops->xError && ops->xError->nValues() > 0) { - np = MIN(ops->xError->nValues(), np); - for (int ii=0; ii<np; ii++) { - double x = ops->coords.x->values_[ii] + ops->xError->values_[ii]; - if (x > extsPtr->right) - extsPtr->right = x; - - x = ops->coords.x->values_[ii] - ops->xError->values_[ii]; - AxisOptions* axisxops = (AxisOptions*)ops->xAxis->ops(); - if (axisxops->logScale) { - // Mirror negative values, instead of ignoring them - if (x < 0.0) - x = -x; - if ((x > DBL_MIN) && (x < extsPtr->left)) - extsPtr->left = x; - } - else if (x < extsPtr->left) - extsPtr->left = x; - } - } - else { - if (ops->xHigh && - (ops->xHigh->nValues() > 0) && - (ops->xHigh->max() > extsPtr->right)) { - extsPtr->right = ops->xHigh->max(); - } - if (ops->xLow && ops->xLow->nValues() > 0) { - double left; - if ((ops->xLow->min() <= 0.0) && (axisxops->logScale)) - left = FindElemValuesMinimum(ops->xLow, DBL_MIN); - else - left = ops->xLow->min(); - - if (left < extsPtr->left) - extsPtr->left = left; - } - } - - if (ops->yError && ops->yError->nValues() > 0) { - np = MIN(ops->yError->nValues(), np); - for (int ii=0; ii<np; ii++) { - double y = ops->coords.y->values_[ii] + ops->yError->values_[ii]; - if (y > extsPtr->bottom) - extsPtr->bottom = y; - - y = ops->coords.y->values_[ii] - ops->yError->values_[ii]; - AxisOptions* axisyops = (AxisOptions*)ops->yAxis->ops(); - if (axisyops->logScale) { - // Mirror negative values, instead of ignoring them - if (y < 0.0) - y = -y; - if ((y > DBL_MIN) && (y < extsPtr->left)) - extsPtr->top = y; - } - else if (y < extsPtr->top) - extsPtr->top = y; - } - } - else { - if (ops->yHigh && (ops->yHigh->nValues() > 0) && - (ops->yHigh->max() > extsPtr->bottom)) - extsPtr->bottom = ops->yHigh->max(); - - if (ops->yLow && ops->yLow->nValues() > 0) { - double top; - if ((ops->yLow->min() <= 0.0) && (axisyops->logScale)) - top = FindElemValuesMinimum(ops->yLow, DBL_MIN); - else - top = ops->yLow->min(); - - if (top < extsPtr->top) - extsPtr->top = top; - } - } -} - -void LineElement::closest() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - ClosestSearch* searchPtr = &gops->search; - int mode = searchPtr->mode; - if (mode == SEARCH_AUTO) { - LinePen* penPtr = NORMALPEN(ops); - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - mode = SEARCH_POINTS; - if ((NUMBEROFPOINTS(ops) > 1) && (penOps->traceWidth > 0)) - mode = SEARCH_TRACES; - } - if (mode == SEARCH_POINTS) - closestPoint(searchPtr); - else { - int found = closestTrace(); - if ((!found) && (searchPtr->along != SEARCH_BOTH)) - closestPoint(searchPtr); - } -} - -void LineElement::draw(Drawable drawable) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - LinePen* penPtr = NORMALPEN(ops); - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (ops->hide) - return; - - // Fill area under the curve - if (ops->fillBg && fillPts_) { - XPoint*points = new XPoint[nFillPts_]; - - unsigned int count =0; - for (Point2d *pp = fillPts_, *endp = pp + nFillPts_; pp < endp; pp++) { - points[count].x = (short)pp->x; - points[count].y = (short)pp->y; - count++; - } - Tk_Fill3DPolygon(graphPtr_->tkwin_, drawable, ops->fillBg, points, - nFillPts_, 0, TK_RELIEF_FLAT); - delete [] points; - } - - // Error bars - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle* stylePtr = (LineStyle*)Chain_GetValue(link); - LinePen* penPtr = (LinePen *)stylePtr->penPtr; - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if ((stylePtr->xeb.length > 0) && (penOps->errorBarShow & SHOW_X)) - graphPtr_->drawSegments(drawable, penPtr->errorBarGC_, - stylePtr->xeb.segments, stylePtr->xeb.length); - - if ((stylePtr->yeb.length > 0) && (penOps->errorBarShow & SHOW_Y)) - graphPtr_->drawSegments(drawable, penPtr->errorBarGC_, - stylePtr->yeb.segments, stylePtr->yeb.length); - } - - // traces - if ((Chain_GetLength(traces_) > 0) && (penOps->traceWidth > 0)) - drawTraces(drawable, penPtr); - - // Symbols, values - if (ops->reqMaxSymbols > 0) { - int total = 0; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - total += stylePtr->symbolPts.length; - } - symbolInterval_ = total / ops->reqMaxSymbols; - symbolCounter_ = 0; - } - - unsigned int count =0; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle* stylePtr = (LineStyle*)Chain_GetValue(link); - LinePen* penPtr = (LinePen *)stylePtr->penPtr; - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if ((stylePtr->symbolPts.length > 0) && - (penOps->symbol.type != SYMBOL_NONE)) - drawSymbols(drawable, penPtr, stylePtr->symbolSize, - stylePtr->symbolPts.length, stylePtr->symbolPts.points); - - if (penOps->valueShow != SHOW_NONE) - drawValues(drawable, penPtr, stylePtr->symbolPts.length, - stylePtr->symbolPts.points, symbolPts_.map + count); - - count += stylePtr->symbolPts.length; - } - - symbolInterval_ = 0; - symbolCounter_ = 0; -} - -void LineElement::drawActive(Drawable drawable) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - LinePen* penPtr = (LinePen*)ops->activePenPtr; - if (!penPtr) - return; - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (ops->hide || !active_) - return; - - int symbolSize = scaleSymbol(penOps->symbol.size); - - if (nActiveIndices_ > 0) { - mapActiveSymbols(); - - if (penOps->symbol.type != SYMBOL_NONE) - drawSymbols(drawable, penPtr, symbolSize, activePts_.length, - activePts_.points); - if (penOps->valueShow != SHOW_NONE) - drawValues(drawable, penPtr, activePts_.length, activePts_.points, - activePts_.map); - } - else if (nActiveIndices_ < 0) { - if ((Chain_GetLength(traces_) > 0) && (penOps->traceWidth > 0)) - drawTraces(drawable, penPtr); - - if (penOps->symbol.type != SYMBOL_NONE) - drawSymbols(drawable, penPtr, symbolSize, symbolPts_.length, - symbolPts_.points); - - if (penOps->valueShow != SHOW_NONE) { - drawValues(drawable, penPtr, symbolPts_.length, symbolPts_.points, - symbolPts_.map); - } - } -} - -void LineElement::drawSymbol(Drawable drawable, int x, int y, int size) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - LinePen* penPtr = NORMALPEN(ops); - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (penOps->traceWidth > 0) { - // Draw an extra line offset by one pixel from the previous to give a - // thicker appearance. This is only for the legend entry. This routine - // is never called for drawing the actual line segments. - XDrawLine(graphPtr_->display_, drawable, penPtr->traceGC_, x - size, y, - x + size, y); - XDrawLine(graphPtr_->display_, drawable, penPtr->traceGC_, x - size, y + 1, - x + size, y + 1); - } - if (penOps->symbol.type != SYMBOL_NONE) { - Point2d point; - point.x = x; - point.y = y; - drawSymbols(drawable, penPtr, size, 1, &point); - } -} - -void LineElement::print(PSOutput* psPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - LinePen* penPtr = NORMALPEN(ops); - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (ops->hide) - return; - - psPtr->format("\n%% Element \"%s\"\n\n", name_); - - // Draw fill area - if (ops->fillBg && fillPts_) { - psPtr->append("% start fill area\n"); - psPtr->setBackground(ops->fillBg); - psPtr->printPolyline(fillPts_, nFillPts_); - psPtr->append("gsave fill grestore\n"); - psPtr->append("% end fill area\n"); - } - - // traces - if ((Chain_GetLength(traces_) > 0) && (penOps->traceWidth > 0)) - printTraces(psPtr, penPtr); - - // Symbols, error bars, values - if (ops->reqMaxSymbols > 0) { - int total = 0; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - total += stylePtr->symbolPts.length; - } - symbolInterval_ = total / ops->reqMaxSymbols; - symbolCounter_ = 0; - } - - unsigned int count =0; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - LinePen* penPtr = (LinePen *)stylePtr->penPtr; - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - XColor* colorPtr = penOps->errorBarColor; - if (!colorPtr) - colorPtr = penOps->traceColor; - - if ((stylePtr->xeb.length > 0) && (penOps->errorBarShow & SHOW_X)) { - psPtr->setLineAttributes(colorPtr, penOps->errorBarLineWidth, - NULL, CapButt, JoinMiter); - psPtr->printSegments(stylePtr->xeb.segments, stylePtr->xeb.length); - } - - if ((stylePtr->yeb.length > 0) && (penOps->errorBarShow & SHOW_Y)) { - psPtr->setLineAttributes(colorPtr, penOps->errorBarLineWidth, - NULL, CapButt, JoinMiter); - psPtr->printSegments(stylePtr->yeb.segments, stylePtr->yeb.length); - } - - if ((stylePtr->symbolPts.length > 0) && - (penOps->symbol.type != SYMBOL_NONE)) - printSymbols(psPtr, penPtr, stylePtr->symbolSize, - stylePtr->symbolPts.length, stylePtr->symbolPts.points); - - if (penOps->valueShow != SHOW_NONE) - printValues(psPtr, penPtr, stylePtr->symbolPts.length, - stylePtr->symbolPts.points, symbolPts_.map + count); - - count += stylePtr->symbolPts.length; - } - - symbolInterval_ = 0; - symbolCounter_ = 0; -} - -void LineElement::printActive(PSOutput* psPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - LinePen* penPtr = (LinePen *)ops->activePenPtr; - if (!penPtr) - return; - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (ops->hide || !active_) - return; - - psPtr->format("\n%% Active Element \"%s\"\n\n", name_); - - int symbolSize = scaleSymbol(penOps->symbol.size); - if (nActiveIndices_ > 0) { - mapActiveSymbols(); - - if (penOps->symbol.type != SYMBOL_NONE) - printSymbols(psPtr, penPtr, symbolSize, activePts_.length, - activePts_.points); - - if (penOps->valueShow != SHOW_NONE) - printValues(psPtr, penPtr, activePts_.length, activePts_.points, - activePts_.map); - } - else if (nActiveIndices_ < 0) { - if ((Chain_GetLength(traces_) > 0) && (penOps->traceWidth > 0)) - printTraces(psPtr, (LinePen*)penPtr); - - if (penOps->symbol.type != SYMBOL_NONE) - printSymbols(psPtr, penPtr, symbolSize, symbolPts_.length, - symbolPts_.points); - if (penOps->valueShow != SHOW_NONE) { - printValues(psPtr, penPtr, symbolPts_.length, symbolPts_.points, - symbolPts_.map); - } - } -} - -void LineElement::printSymbol(PSOutput* psPtr, double x, double y, int size) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - LinePen* penPtr = NORMALPEN(ops); - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (penOps->traceWidth > 0) { - // Draw an extra line offset by one pixel from the previous to give a - // thicker appearance. This is only for the legend entry. This routine - // is never called for drawing the actual line segments. - psPtr->setLineAttributes(penOps->traceColor, penOps->traceWidth, - &penOps->traceDashes, CapButt, JoinMiter); - psPtr->format("%g %g %d Li\n", x, y, size + size); - } - - if (penOps->symbol.type != SYMBOL_NONE) { - Point2d point; - point.x = x; - point.y = y; - printSymbols(psPtr, penPtr, size, 1, &point); - } -} - -// Support - -double LineElement::distanceToLine(int x, int y, Point2d *p, Point2d *q, - Point2d *t) -{ - double right, left, top, bottom; - - *t = getProjection(x, y, p, q); - if (p->x > q->x) - right = p->x, left = q->x; - else - left = p->x, right = q->x; - - if (p->y > q->y) - bottom = p->y, top = q->y; - else - top = p->y, bottom = q->y; - - if (t->x > right) - t->x = right; - else if (t->x < left) - t->x = left; - - if (t->y > bottom) - t->y = bottom; - else if (t->y < top) - t->y = top; - - return hypot((t->x - x), (t->y - y)); -} - -double LineElement::distanceToX(int x, int y, Point2d *p, Point2d *q, - Point2d *t) -{ - double dx, dy; - double d; - - if (p->x > q->x) { - if ((x > p->x) || (x < q->x)) { - return DBL_MAX; /* X-coordinate outside line segment. */ - } - } else { - if ((x > q->x) || (x < p->x)) { - return DBL_MAX; /* X-coordinate outside line segment. */ - } - } - dx = p->x - q->x; - dy = p->y - q->y; - t->x = (double)x; - if (fabs(dx) < DBL_EPSILON) { - double d1, d2; - /* - * Same X-coordinate indicates a vertical line. Pick the closest end - * point. - */ - d1 = p->y - y; - d2 = q->y - y; - if (fabs(d1) < fabs(d2)) { - t->y = p->y, d = d1; - } else { - t->y = q->y, d = d2; - } - } - else if (fabs(dy) < DBL_EPSILON) { - /* Horizontal line. */ - t->y = p->y, d = p->y - y; - } - else { - double m = dy / dx; - double b = p->y - (m * p->x); - t->y = (x * m) + b; - d = y - t->y; - } - - return fabs(d); -} - -double LineElement::distanceToY(int x, int y, Point2d *p, Point2d *q, - Point2d *t) -{ - double dx, dy; - double d; - - if (p->y > q->y) { - if ((y > p->y) || (y < q->y)) { - return DBL_MAX; - } - } - else { - if ((y > q->y) || (y < p->y)) { - return DBL_MAX; - } - } - dx = p->x - q->x; - dy = p->y - q->y; - t->y = y; - if (fabs(dy) < DBL_EPSILON) { - double d1, d2; - - /* Save Y-coordinate indicates an horizontal line. Pick the closest end - * point. */ - d1 = p->x - x; - d2 = q->x - x; - if (fabs(d1) < fabs(d2)) { - t->x = p->x, d = d1; - } - else { - t->x = q->x, d = d2; - } - } - else if (fabs(dx) < DBL_EPSILON) { - /* Vertical line. */ - t->x = p->x, d = p->x - x; - } - else { - double m = dy / dx; - double b = p->y - (m * p->x); - t->x = (y - b) / m; - d = x - t->x; - } - - return fabs(d); -} - -int LineElement::scaleSymbol(int normalSize) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - double scale = 1.0; - if (ops->scaleSymbols) { - double xRange = (ops->xAxis->max_ - ops->xAxis->min_); - double yRange = (ops->yAxis->max_ - ops->yAxis->min_); - // Save the ranges as a baseline for future scaling - if (!xRange_ || !yRange_) { - xRange_ = xRange; - yRange_ = yRange; - } - else { - // Scale the symbol by the smallest change in the X or Y axes - double xScale = xRange_ / xRange; - double yScale = yRange_ / yRange; - scale = MIN(xScale, yScale); - } - } - int newSize = (int)(normalSize * scale); - - int maxSize = MIN(graphPtr_->hRange_, graphPtr_->vRange_); - if (newSize > maxSize) - newSize = maxSize; - - // Make the symbol size odd so that its center is a single pixel. - newSize |= 0x01; - - return newSize; -} - -void LineElement::getScreenPoints(MapInfo* mapPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - if (!ops->coords.x || !ops->coords.y) { - mapPtr->screenPts = NULL; - mapPtr->nScreenPts = 0; - mapPtr->map = NULL; - } - - int np = NUMBEROFPOINTS(ops); - double* x = ops->coords.x->values_; - double* y = ops->coords.y->values_; - Point2d* points = new Point2d[np]; - int* map = new int[np]; - - int count = 0; - if (gops->inverted) { - for (int ii=0; ii<np; ii++) { - if ((isfinite(x[ii])) && (isfinite(y[ii]))) { - points[count].x = ops->yAxis->hMap(y[ii]); - points[count].y = ops->xAxis->vMap(x[ii]); - map[count] = ii; - count++; - } - } - } - else { - for (int ii=0; ii< np; ii++) { - if ((isfinite(x[ii])) && (isfinite(y[ii]))) { - points[count].x = ops->xAxis->hMap(x[ii]); - points[count].y = ops->yAxis->vMap(y[ii]); - map[count] = ii; - count++; - } - } - } - mapPtr->screenPts = points; - mapPtr->nScreenPts = count; - mapPtr->map = map; -} - -void LineElement::reducePoints(MapInfo *mapPtr, double tolerance) -{ - int* simple = new int[mapPtr->nScreenPts]; - int* map = new int[mapPtr->nScreenPts]; - Point2d* screenPts = new Point2d[mapPtr->nScreenPts]; - int np = simplify(mapPtr->screenPts, 0, mapPtr->nScreenPts - 1, - tolerance, simple); - for (int ii=0; ii<np; ii++) { - int kk = simple[ii]; - screenPts[ii] = mapPtr->screenPts[kk]; - map[ii] = mapPtr->map[kk]; - } - delete [] simple; - - delete [] mapPtr->screenPts; - mapPtr->screenPts = screenPts; - delete [] mapPtr->map; - mapPtr->map = map; - mapPtr->nScreenPts = np; -} - -// Douglas-Peucker line simplification algorithm -int LineElement::simplify(Point2d *inputPts, int low, int high, - double tolerance, int *indices) -{ -#define StackPush(a) s++, stack[s] = (a) -#define StackPop(a) (a) = stack[s], s-- -#define StackEmpty() (s < 0) -#define StackTop() stack[s] - int split = -1; - double dist2, tolerance2; - int s = -1; /* Points to top stack item. */ - - int* stack = new int[high - low + 1]; - StackPush(high); - int count = 0; - indices[count++] = 0; - tolerance2 = tolerance * tolerance; - while (!StackEmpty()) { - dist2 = findSplit(inputPts, low, StackTop(), &split); - if (dist2 > tolerance2) - StackPush(split); - else { - indices[count++] = StackTop(); - StackPop(low); - } - } - delete [] stack; - return count; -} - -double LineElement::findSplit(Point2d *points, int i, int j, int *split) -{ - double maxDist2 = -1.0; - if ((i + 1) < j) { - double a = points[i].y - points[j].y; - double b = points[j].x - points[i].x; - double c = (points[i].x * points[j].y) - (points[i].y * points[j].x); - for (int kk = (i + 1); kk < j; kk++) { - double dist2 = (points[kk].x * a) + (points[kk].y * b) + c; - if (dist2 < 0.0) - dist2 = -dist2; - - // Track the maximum. - if (dist2 > maxDist2) { - maxDist2 = dist2; - *split = kk; - } - } - // Correction for segment length---should be redone if can == 0 - maxDist2 *= maxDist2 / (a * a + b * b); - } - return maxDist2; -} - -void LineElement::generateSteps(MapInfo *mapPtr) -{ - int newSize = ((mapPtr->nScreenPts - 1) * 2) + 1; - Point2d* screenPts = new Point2d[newSize]; - int* map = new int[newSize]; - screenPts[0] = mapPtr->screenPts[0]; - map[0] = 0; - - int count = 1; - for (int i = 1; i < mapPtr->nScreenPts; i++) { - screenPts[count + 1] = mapPtr->screenPts[i]; - - // Hold last y-coordinate, use new x-coordinate - screenPts[count].x = screenPts[count + 1].x; - screenPts[count].y = screenPts[count - 1].y; - - // Use the same style for both the hold and the step points - map[count] = map[count + 1] = mapPtr->map[i]; - count += 2; - } - delete [] mapPtr->map; - mapPtr->map = map; - delete [] mapPtr->screenPts; - mapPtr->screenPts = screenPts; - mapPtr->nScreenPts = newSize; -} - -void LineElement::generateSpline(MapInfo *mapPtr) -{ - int nOrigPts = mapPtr->nScreenPts; - Point2d* origPts = mapPtr->screenPts; - - // check points are not monotonically increasing - for (int ii=0, jj=1; jj<nOrigPts; ii++, jj++) { - if (origPts[jj].x <= origPts[ii].x) - return; - } - if (((origPts[0].x > (double)graphPtr_->right_)) || - ((origPts[mapPtr->nScreenPts - 1].x < (double)graphPtr_->left_))) - return; - - // The spline is computed in screen coordinates instead of data points so - // that we can select the abscissas of the interpolated points from each - // pixel horizontally across the plotting area. - int extra = (graphPtr_->right_ - graphPtr_->left_) + 1; - if (extra < 1) - return; - - int niPts = nOrigPts + extra + 1; - Point2d* iPts = new Point2d[niPts]; - int* map = new int[niPts]; - - // Populate the x2 array with both the original X-coordinates and extra - // X-coordinates for each horizontal pixel that the line segment contains - int count = 0; - for (int ii=0, jj=1; jj<nOrigPts; ii++, jj++) { - // Add the original x-coordinate - iPts[count].x = origPts[ii].x; - - // Include the starting offset of the point in the offset array - map[count] = mapPtr->map[ii]; - count++; - - // Is any part of the interval (line segment) in the plotting area? - if ((origPts[jj].x >= (double)graphPtr_->left_) || - (origPts[ii].x <= (double)graphPtr_->right_)) { - double x = origPts[ii].x + 1.0; - - /* - * Since the line segment may be partially clipped on the left or - * right side, the points to interpolate are always interior to - * the plotting area. - * - * left right - * x1----|---------------------------|---x2 - * - * Pick the max of the starting X-coordinate and the left edge and - * the min of the last X-coordinate and the right edge. - */ - x = MAX(x, (double)graphPtr_->left_); - double last = MIN(origPts[jj].x, (double)graphPtr_->right_); - - // Add the extra x-coordinates to the interval - while (x < last) { - map[count] = mapPtr->map[ii]; - iPts[count++].x = x; - x++; - } - } - } - niPts = count; - int result = 0; - if (smooth_ == CUBIC) - result = naturalSpline(origPts, nOrigPts, iPts, niPts); - else if (smooth_ == QUADRATIC) - result = quadraticSpline(origPts, nOrigPts, iPts, niPts); - - // The spline interpolation failed. We will fall back to the current - // coordinates and do no smoothing (standard line segments) - if (!result) { - smooth_ = LINEAR; - delete [] iPts; - delete [] map; - } - else { - delete [] mapPtr->map; - mapPtr->map = map; - delete [] mapPtr->screenPts; - mapPtr->screenPts = iPts; - mapPtr->nScreenPts = niPts; - } -} - -void LineElement::generateParametricSpline(MapInfo *mapPtr) -{ - int nOrigPts = mapPtr->nScreenPts; - Point2d *origPts = mapPtr->screenPts; - - Region2d exts; - graphPtr_->extents(&exts); - - /* - * Populate the x2 array with both the original X-coordinates and extra - * X-coordinates for each horizontal pixel that the line segment contains. - */ - int count = 1; - for (int i = 0, j = 1; j < nOrigPts; i++, j++) { - Point2d p = origPts[i]; - Point2d q = origPts[j]; - count++; - if (lineRectClip(&exts, &p, &q)) - count += (int)(hypot(q.x - p.x, q.y - p.y) * 0.5); - } - int niPts = count; - Point2d *iPts = new Point2d[niPts]; - int* map = new int[niPts]; - - /* - * FIXME: This is just plain wrong. The spline should be computed - * and evaluated in separate steps. This will mean breaking - * up this routine since the catrom coefficients can be - * independently computed for original data point. This - * also handles the problem of allocating enough points - * since evaluation is independent of the number of points - * to be evalualted. The interpolated - * line segments should be clipped, not the original segments. - */ - count = 0; - int i,j; - for (i = 0, j = 1; j < nOrigPts; i++, j++) { - Point2d p = origPts[i]; - Point2d q = origPts[j]; - - double d = hypot(q.x - p.x, q.y - p.y); - /* Add the original x-coordinate */ - iPts[count].x = (double)i; - iPts[count].y = 0.0; - - /* Include the starting offset of the point in the offset array */ - map[count] = mapPtr->map[i]; - count++; - - /* Is any part of the interval (line segment) in the plotting - * area? */ - - if (lineRectClip(&exts, &p, &q)) { - double dp, dq; - - /* Distance of original point to p. */ - dp = hypot(p.x - origPts[i].x, p.y - origPts[i].y); - /* Distance of original point to q. */ - dq = hypot(q.x - origPts[i].x, q.y - origPts[i].y); - dp += 2.0; - while(dp <= dq) { - /* Point is indicated by its interval and parameter t. */ - iPts[count].x = (double)i; - iPts[count].y = dp / d; - map[count] = mapPtr->map[i]; - count++; - dp += 2.0; - } - } - } - iPts[count].x = (double)i; - iPts[count].y = 0.0; - map[count] = mapPtr->map[i]; - count++; - niPts = count; - int result = 0; - if (smooth_ == CUBIC) - result = naturalParametricSpline(origPts, nOrigPts, &exts, 0, iPts, niPts); - else if (smooth_ == CATROM) - result = catromParametricSpline(origPts, nOrigPts, iPts, niPts); - - // The spline interpolation failed. We will fall back to the current - // coordinates and do no smoothing (standard line segments) - if (!result) { - smooth_ = LINEAR; - delete [] iPts; - delete [] map; - } - else { - delete [] mapPtr->map; - mapPtr->map = map; - delete [] mapPtr->screenPts; - mapPtr->screenPts = iPts; - mapPtr->nScreenPts = niPts; - } -} - -void LineElement::mapSymbols(MapInfo *mapPtr) -{ - Point2d* points = new Point2d[mapPtr->nScreenPts]; - int *map = new int[mapPtr->nScreenPts]; - - Region2d exts; - graphPtr_->extents(&exts); - - Point2d *pp; - int count = 0; - int i; - for (pp=mapPtr->screenPts, i=0; i<mapPtr->nScreenPts; i++, pp++) { - if (PointInRegion(&exts, pp->x, pp->y)) { - points[count].x = pp->x; - points[count].y = pp->y; - map[count] = mapPtr->map[i]; - count++; - } - } - symbolPts_.points = points; - symbolPts_.length = count; - symbolPts_.map = map; -} - -void LineElement::mapActiveSymbols() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - delete [] activePts_.points; - activePts_.points = NULL; - delete [] activePts_.map; - activePts_.map = NULL; - - Region2d exts; - graphPtr_->extents(&exts); - - Point2d *points = new Point2d[nActiveIndices_]; - int* map = new int[nActiveIndices_]; - int np = NUMBEROFPOINTS(ops); - int count = 0; - if (ops->coords.x && ops->coords.y) { - for (int ii=0; ii<nActiveIndices_; ii++) { - int iPoint = activeIndices_[ii]; - if (iPoint >= np) - continue; - - double x = ops->coords.x->values_[iPoint]; - double y = ops->coords.y->values_[iPoint]; - points[count] = graphPtr_->map2D(x, y, ops->xAxis, ops->yAxis); - map[count] = iPoint; - if (PointInRegion(&exts, points[count].x, points[count].y)) { - count++; - } - } - } - - if (count > 0) { - activePts_.points = points; - activePts_.map = map; - } - else { - delete [] points; - delete [] map; - } - activePts_.length = count; -} - -void LineElement::mergePens(LineStyle **styleMap) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - if (Chain_GetLength(ops->stylePalette) < 2) { - ChainLink* link = Chain_FirstLink(ops->stylePalette); - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - stylePtr->symbolPts.length = symbolPts_.length; - stylePtr->symbolPts.points = symbolPts_.points; - stylePtr->xeb.length = xeb_.length; - stylePtr->xeb.segments = xeb_.segments; - stylePtr->yeb.length = yeb_.length; - stylePtr->yeb.segments = yeb_.segments; - return; - } - - if (symbolPts_.length > 0) { - Point2d* points = new Point2d[symbolPts_.length]; - int* map = new int[symbolPts_.length]; - Point2d *pp = points; - int* ip = map; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - stylePtr->symbolPts.points = pp; - for (int ii=0; ii<symbolPts_.length; ii++) { - int iData = symbolPts_.map[ii]; - if (styleMap[iData] == stylePtr) { - *pp++ = symbolPts_.points[ii]; - *ip++ = iData; - } - } - stylePtr->symbolPts.length = pp - stylePtr->symbolPts.points; - } - delete [] symbolPts_.points; - symbolPts_.points = points; - delete [] symbolPts_.map; - symbolPts_.map = map; - } - - if (xeb_.length > 0) { - Segment2d* segments = new Segment2d[xeb_.length]; - Segment2d *sp = segments; - int* map = new int[xeb_.length]; - int* ip = map; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - stylePtr->xeb.segments = sp; - for (int ii=0; ii<xeb_.length; ii++) { - int iData = xeb_.map[ii]; - if (styleMap[iData] == stylePtr) { - *sp++ = xeb_.segments[ii]; - *ip++ = iData; - } - } - stylePtr->xeb.length = sp - stylePtr->xeb.segments; - } - delete [] xeb_.segments; - xeb_.segments = segments; - delete [] xeb_.map; - xeb_.map = map; - } - - if (yeb_.length > 0) { - Segment2d* segments = new Segment2d[yeb_.length]; - Segment2d* sp = segments; - int* map = new int [yeb_.length]; - int* ip = map; - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - stylePtr->yeb.segments = sp; - for (int ii=0; ii<yeb_.length; ii++) { - int iData = yeb_.map[ii]; - if (styleMap[iData] == stylePtr) { - *sp++ = yeb_.segments[ii]; - *ip++ = iData; - } - } - stylePtr->yeb.length = sp - stylePtr->yeb.segments; - } - delete [] yeb_.segments; - yeb_.segments = segments; - delete [] yeb_.map; - yeb_.map = map; - } -} - -void LineElement::saveTrace(int start, int length, MapInfo* mapPtr) -{ - bltTrace* tracePtr = new bltTrace; - Point2d* screenPts = new Point2d[length]; - int* map = new int[length]; - - // Copy the screen coordinates of the trace into the point array - if (mapPtr->map) { - for (int ii=0, jj=start; ii<length; ii++, jj++) { - screenPts[ii].x = mapPtr->screenPts[jj].x; - screenPts[ii].y = mapPtr->screenPts[jj].y; - map[ii] = mapPtr->map[jj]; - } - } - else { - for (int ii=0, jj=start; ii<length; ii++, jj++) { - screenPts[ii].x = mapPtr->screenPts[jj].x; - screenPts[ii].y = mapPtr->screenPts[jj].y; - map[ii] = jj; - } - } - tracePtr->screenPts.length = length; - tracePtr->screenPts.points = screenPts; - tracePtr->screenPts.map = map; - tracePtr->start = start; - if (traces_ == NULL) - traces_ = new Chain(); - - traces_->append(tracePtr); -} - -void LineElement::freeTraces() -{ - for (ChainLink* link = Chain_FirstLink(traces_); link; - link = Chain_NextLink(link)) { - bltTrace* tracePtr = (bltTrace*)Chain_GetValue(link); - delete [] tracePtr->screenPts.map; - delete [] tracePtr->screenPts.points; - delete tracePtr; - } - delete traces_; - traces_ = NULL; -} - -void LineElement::mapTraces(MapInfo *mapPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - Region2d exts; - graphPtr_->extents(&exts); - - int count = 1; - Point2d* p = mapPtr->screenPts; - Point2d* q = p + 1; - - int start; - int ii; - for (ii=1; ii<mapPtr->nScreenPts; ii++, p++, q++) { - // Save the coordinates of the last point before clipping. - Point2d originalq = *q; - int broken = BROKEN_TRACE(ops->penDir, p->x, q->x); - LineRectClipResult clipresult = lineRectClip(&exts, p, q); - - if (broken || clipresult == CLIP_OUTSIDE) { - // The last line segment is either totally clipped by the plotting - // area or the x-direction is wrong, breaking the trace. Either - // way, save information about the last trace (if one exists), - // discarding the current line segment - if (count > 1) { - start = ii - count; - saveTrace(start, count, mapPtr); - count = 1; - } - } - else { - // Add the point to the trace - count++; - - // If the last point is clipped, this means that the trace is - // broken after this point. Restore the original coordinate - // (before clipping) after saving the trace. - if (clipresult & CLIP_Q) { - start = ii - (count - 1); - saveTrace(start, count, mapPtr); - mapPtr->screenPts[ii] = originalq; - count = 1; - } - } - } - if (count > 1) { - start = ii - count; - saveTrace(start, count, mapPtr); - } -} - -void LineElement::mapFillArea(MapInfo *mapPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - if (fillPts_) { - delete [] fillPts_; - fillPts_ = NULL; - nFillPts_ = 0; - } - if (mapPtr->nScreenPts < 3) - return; - - int np = mapPtr->nScreenPts + 3; - Region2d exts; - graphPtr_->extents(&exts); - - Point2d* origPts = new Point2d[np]; - if (gops->inverted) { - int i; - double minX = (double)ops->yAxis->screenMin_; - for (i = 0; i < mapPtr->nScreenPts; i++) { - origPts[i].x = mapPtr->screenPts[i].x + 1; - origPts[i].y = mapPtr->screenPts[i].y; - if (origPts[i].x < minX) { - minX = origPts[i].x; - } - } - // Add edges to make the polygon fill to the bottom of plotting window - origPts[i].x = minX; - origPts[i].y = origPts[i - 1].y; - i++; - origPts[i].x = minX; - origPts[i].y = origPts[0].y; - i++; - origPts[i] = origPts[0]; - } - else { - int i; - double maxY = (double)ops->yAxis->bottom_; - for (i = 0; i < mapPtr->nScreenPts; i++) { - origPts[i].x = mapPtr->screenPts[i].x + 1; - origPts[i].y = mapPtr->screenPts[i].y; - if (origPts[i].y > maxY) { - maxY = origPts[i].y; - } - } - // Add edges to extend the fill polygon to the bottom of plotting window - origPts[i].x = origPts[i - 1].x; - origPts[i].y = maxY; - i++; - origPts[i].x = origPts[0].x; - origPts[i].y = maxY; - i++; - origPts[i] = origPts[0]; - } - - Point2d *clipPts = new Point2d[np * 3]; - np = polyRectClip(&exts, origPts, np - 1, clipPts); - - delete [] origPts; - if (np < 3) - delete [] clipPts; - else { - fillPts_ = clipPts; - nFillPts_ = np; - } -} - -void LineElement::reset() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - freeTraces(); - - for (ChainLink* link = Chain_FirstLink(ops->stylePalette); link; - link = Chain_NextLink(link)) { - LineStyle *stylePtr = (LineStyle*)Chain_GetValue(link); - stylePtr->symbolPts.length = 0; - stylePtr->xeb.length = 0; - stylePtr->yeb.length = 0; - } - - delete [] symbolPts_.points; - symbolPts_.points = NULL; - - delete [] symbolPts_.map; - symbolPts_.map = NULL; - symbolPts_.length = 0; - - delete [] activePts_.points; - activePts_.points = NULL; - activePts_.length = 0; - - delete [] activePts_.map; - activePts_.map = NULL; - - delete [] xeb_.segments; - xeb_.segments = NULL; - delete [] xeb_.map; - xeb_.map = NULL; - xeb_.length = 0; - - delete [] yeb_.segments; - yeb_.segments = NULL; - delete [] yeb_.map; - yeb_.map = NULL; - yeb_.length = 0; -} - -void LineElement::mapErrorBars(LineStyle **styleMap) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - Region2d exts; - graphPtr_->extents(&exts); - - int nn =0; - int np = NUMBEROFPOINTS(ops); - if (ops->coords.x && ops->coords.y) { - if (ops->xError && (ops->xError->nValues() > 0)) - nn = MIN(ops->xError->nValues(), np); - else - if (ops->xHigh && ops->xLow) - nn = MIN3(ops->xHigh->nValues(), ops->xLow->nValues(), np); - } - - if (nn) { - Segment2d* errorBars = new Segment2d[nn * 3]; - Segment2d* segPtr = errorBars; - int* errorToData = new int[nn * 3]; - int* indexPtr = errorToData; - - for (int ii=0; ii<nn; ii++) { - double x = ops->coords.x->values_[ii]; - double y = ops->coords.y->values_[ii]; - LineStyle* stylePtr = styleMap[ii]; - - if ((isfinite(x)) && (isfinite(y))) { - double high; - double low; - if (ops->xError && ops->xError->nValues() > 0) { - high = x + ops->xError->values_[ii]; - low = x - ops->xError->values_[ii]; - } - else { - high = ops->xHigh ? ops->xHigh->values_[ii] : 0; - low = ops->xLow ? ops->xLow->values_[ii] : 0; - } - - if ((isfinite(high)) && (isfinite(low))) { - Point2d p = graphPtr_->map2D(high, y, ops->xAxis, ops->yAxis); - Point2d q = graphPtr_->map2D(low, y, ops->xAxis, ops->yAxis); - segPtr->p = p; - segPtr->q = q; - if (lineRectClip(&exts, &segPtr->p, &segPtr->q)) { - segPtr++; - *indexPtr++ = ii; - } - // Left cap - segPtr->p.x = p.x; - segPtr->q.x = p.x; - segPtr->p.y = p.y - stylePtr->errorBarCapWidth; - segPtr->q.y = p.y + stylePtr->errorBarCapWidth; - if (lineRectClip(&exts, &segPtr->p, &segPtr->q)) { - segPtr++; - *indexPtr++ = ii; - } - // Right cap - segPtr->p.x = q.x; - segPtr->q.x = q.x; - segPtr->p.y = q.y - stylePtr->errorBarCapWidth; - segPtr->q.y = q.y + stylePtr->errorBarCapWidth; - if (lineRectClip(&exts, &segPtr->p, &segPtr->q)) { - segPtr++; - *indexPtr++ = ii; - } - } - } - } - xeb_.segments = errorBars; - xeb_.length = segPtr - errorBars; - xeb_.map = errorToData; - } - - nn =0; - if (ops->coords.x && ops->coords.y) { - if (ops->yError && (ops->yError->nValues() > 0)) - nn = MIN(ops->yError->nValues(), np); - else - if (ops->yHigh && ops->yLow) - nn = MIN3(ops->yHigh->nValues(), ops->yLow->nValues(), np); - } - - if (nn) { - Segment2d* errorBars = new Segment2d[nn * 3]; - Segment2d* segPtr = errorBars; - int* errorToData = new int[nn * 3]; - int* indexPtr = errorToData; - - for (int ii=0; ii<nn; ii++) { - double x = ops->coords.x->values_[ii]; - double y = ops->coords.y->values_[ii]; - LineStyle* stylePtr = styleMap[ii]; - - if ((isfinite(x)) && (isfinite(y))) { - double high; - double low; - if (ops->yError && ops->yError->nValues() > 0) { - high = y + ops->yError->values_[ii]; - low = y - ops->yError->values_[ii]; - } - else { - high = ops->yHigh->values_[ii]; - low = ops->yLow->values_[ii]; - } - - if ((isfinite(high)) && (isfinite(low))) { - Point2d p = graphPtr_->map2D(x, high, ops->xAxis, ops->yAxis); - Point2d q = graphPtr_->map2D(x, low, ops->xAxis, ops->yAxis); - segPtr->p = p; - segPtr->q = q; - if (lineRectClip(&exts, &segPtr->p, &segPtr->q)) { - segPtr++; - *indexPtr++ = ii; - } - // Top cap - segPtr->p.y = p.y; - segPtr->q.y = p.y; - segPtr->p.x = p.x - stylePtr->errorBarCapWidth; - segPtr->q.x = p.x + stylePtr->errorBarCapWidth; - if (lineRectClip(&exts, &segPtr->p, &segPtr->q)) { - segPtr++; - *indexPtr++ = ii; - } - // Bottom cap - segPtr->p.y = q.y; - segPtr->q.y = q.y; - segPtr->p.x = q.x - stylePtr->errorBarCapWidth; - segPtr->q.x = q.x + stylePtr->errorBarCapWidth; - if (lineRectClip(&exts, &segPtr->p, &segPtr->q)) { - segPtr++; - *indexPtr++ = ii; - } - } - } - } - yeb_.segments = errorBars; - yeb_.length = segPtr - errorBars; - yeb_.map = errorToData; - } -} - -int LineElement::closestTrace() -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - ClosestSearch* searchPtr = &gops->search; - - Point2d closest; - - int iClose = -1; - double dMin = searchPtr->dist; - closest.x = closest.y = 0; - for (ChainLink *link=Chain_FirstLink(traces_); link; - link = Chain_NextLink(link)) { - bltTrace *tracePtr = (bltTrace*)Chain_GetValue(link); - for (Point2d *p=tracePtr->screenPts.points, - *pend=p + (tracePtr->screenPts.length - 1); p<pend; p++) { - Point2d b; - double d; - if (searchPtr->along == SEARCH_X) - d = distanceToX(searchPtr->x, searchPtr->y, p, p + 1, &b); - else if (searchPtr->along == SEARCH_Y) - d = distanceToY(searchPtr->x, searchPtr->y, p, p + 1, &b); - else - d = distanceToLine(searchPtr->x, searchPtr->y, p, p + 1, &b); - - if (d < dMin) { - closest = b; - iClose = tracePtr->screenPts.map[p-tracePtr->screenPts.points]; - dMin = d; - } - } - } - if (dMin < searchPtr->dist) { - searchPtr->dist = dMin; - searchPtr->elemPtr = (Element*)this; - searchPtr->index = iClose; - searchPtr->point = graphPtr_->invMap2D(closest.x, closest.y, - ops->xAxis, ops->yAxis); - return 1; - } - - return 0; -} - -void LineElement::closestPoint(ClosestSearch *searchPtr) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - - double dMin = searchPtr->dist; - int iClose = 0; - - // Instead of testing each data point in graph coordinates, look at the - // array of mapped screen coordinates. The advantages are - // 1) only examine points that are visible (unclipped), and - // 2) the computed distance is already in screen coordinates. - int count =0; - for (Point2d *pp = symbolPts_.points; count < symbolPts_.length; - count++, pp++) { - double dx = (double)abs(searchPtr->x - pp->x); - double dy = (double)abs(searchPtr->y - pp->y); - double d; - if (searchPtr->along == SEARCH_BOTH) - d = hypot(dx, dy); - else if (searchPtr->along == SEARCH_X) - d = dx; - else if (searchPtr->along == SEARCH_Y) - d = dy; - else - continue; - - if (d < dMin) { - iClose = symbolPts_.map[count]; - dMin = d; - } - } - if (dMin < searchPtr->dist) { - searchPtr->elemPtr = (Element*)this; - searchPtr->dist = dMin; - searchPtr->index = iClose; - searchPtr->point.x = ops->coords.x->values_[iClose]; - searchPtr->point.y = ops->coords.y->values_[iClose]; - } -} - -void LineElement::drawCircle(Display *display, Drawable drawable, - LinePen* penPtr, - int nSymbolPts, Point2d *symbolPts, int radius) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - int count = 0; - int s = radius + radius; - XArc* arcs = new XArc[nSymbolPts]; - XArc *ap = arcs; - for (Point2d *pp=symbolPts, *pend=pp+nSymbolPts; pp<pend; pp++) { - if (DRAW_SYMBOL()) { - ap->x = (short)(pp->x - radius); - ap->y = (short)(pp->y - radius); - ap->width = (short)s; - ap->height = (short)s; - ap->angle1 = 0; - ap->angle2 = 23040; - ap++; - count++; - } - symbolCounter_++; - } - - for (XArc *ap=arcs, *aend=ap+count; ap<aend; ap++) { - if (penOps->symbol.fillGC) - XFillArc(display, drawable, penOps->symbol.fillGC, - ap->x, ap->y, ap->width, ap->height, ap->angle1, ap->angle2); - - if (penOps->symbol.outlineWidth > 0) - XDrawArc(display, drawable, penOps->symbol.outlineGC, - ap->x, ap->y, ap->width, ap->height, ap->angle1, ap->angle2); - } - - delete [] arcs; -} - -void LineElement::drawSquare(Display *display, Drawable drawable, - LinePen* penPtr, - int nSymbolPts, Point2d *symbolPts, int r) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - int s = r + r; - int count =0; - Rectangle* rectangles = new Rectangle[nSymbolPts]; - Rectangle* rp=rectangles; - for (Point2d *pp=symbolPts, *pend=pp+nSymbolPts; pp<pend; pp++) { - if (DRAW_SYMBOL()) { - rp->x = (int)pp->x - r; - rp->y = (int)pp->y - r; - rp->width = s; - rp->height = s; - rp++; - count++; - } - symbolCounter_++; - } - - for (Rectangle *rp=rectangles, *rend=rp+count; rp<rend; rp ++) { - if (penOps->symbol.fillGC) - XFillRectangle(display, drawable, penOps->symbol.fillGC, - rp->x, rp->y, rp->width, rp->height); - - if (penOps->symbol.outlineWidth > 0) - XDrawRectangle(display, drawable, penOps->symbol.outlineGC, - rp->x, rp->y, rp->width, rp->height); - } - - delete [] rectangles; -} - -void LineElement::drawSCross(Display* display, Drawable drawable, - LinePen* penPtr, - int nSymbolPts, Point2d* symbolPts, int r2) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - Point pattern[4]; - if (penOps->symbol.type == SYMBOL_SCROSS) { - r2 = (int)(r2 * M_SQRT1_2); - pattern[3].y = pattern[2].x = pattern[0].x = pattern[0].y = -r2; - pattern[3].x = pattern[2].y = pattern[1].y = pattern[1].x = r2; - } - else { - pattern[0].y = pattern[1].y = pattern[2].x = pattern[3].x = 0; - pattern[0].x = pattern[2].y = -r2; - pattern[1].x = pattern[3].y = r2; - } - - for (Point2d *pp=symbolPts, *endp=pp+nSymbolPts; pp<endp; pp++) { - if (DRAW_SYMBOL()) { - int rndx = (int)pp->x; - int rndy = (int)pp->y; - XDrawLine(graphPtr_->display_, drawable, penOps->symbol.outlineGC, - pattern[0].x + rndx, pattern[0].y + rndy, - pattern[1].x + rndx, pattern[1].y + rndy); - XDrawLine(graphPtr_->display_, drawable, penOps->symbol.outlineGC, - pattern[2].x + rndx, pattern[2].y + rndy, - pattern[3].x + rndx, pattern[3].y + rndy); - } - } -} - -void LineElement::drawCross(Display *display, Drawable drawable, - LinePen* penPtr, - int nSymbolPts, Point2d *symbolPts, int r2) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - /* - * 2 3 The plus/cross symbol is a closed polygon - * of 12 points. The diagram to the left - * 0,12 1 4 5 represents the positions of the points - * x,y which are computed below. The extra - * 11 10 7 6 (thirteenth) point connects the first and - * last points. - * 9 8 - */ - int d = (r2 / 3); - Point pattern[13]; - pattern[0].x = pattern[11].x = pattern[12].x = -r2; - pattern[2].x = pattern[1].x = pattern[10].x = pattern[9].x = -d; - pattern[3].x = pattern[4].x = pattern[7].x = pattern[8].x = d; - pattern[5].x = pattern[6].x = r2; - pattern[2].y = pattern[3].y = -r2; - pattern[0].y = pattern[1].y = pattern[4].y = pattern[5].y = - pattern[12].y = -d; - pattern[11].y = pattern[10].y = pattern[7].y = pattern[6].y = d; - pattern[9].y = pattern[8].y = r2; - - if (penOps->symbol.type == SYMBOL_CROSS) { - // For the cross symbol, rotate the points by 45 degrees - for (int ii=0; ii<12; ii++) { - double dx = (double)pattern[ii].x * M_SQRT1_2; - double dy = (double)pattern[ii].y * M_SQRT1_2; - pattern[ii].x = (int)(dx - dy); - pattern[ii].y = (int)(dx + dy); - } - pattern[12] = pattern[0]; - } - - int count = 0; - XPoint* polygon = new XPoint[nSymbolPts*13]; - XPoint* xpp = polygon; - for (Point2d *pp = symbolPts, *endp = pp + nSymbolPts; pp < endp; pp++) { - if (DRAW_SYMBOL()) { - int rndx = (int)pp->x; - int rndy = (int)pp->y; - for (int ii=0; ii<13; ii++) { - xpp->x = (short)(pattern[ii].x + rndx); - xpp->y = (short)(pattern[ii].y + rndy); - xpp++; - } - count++; - } - symbolCounter_++; - } - - if (penOps->symbol.fillGC) { - XPoint* xpp = polygon; - for (int ii=0; ii<count; ii++, xpp += 13) - XFillPolygon(graphPtr_->display_, drawable, - penOps->symbol.fillGC, xpp, 13, Complex, - CoordModeOrigin); - } - - if (penOps->symbol.outlineWidth > 0) { - XPoint*xpp = polygon; - for (int ii=0; ii<count; ii++, xpp += 13) - XDrawLines(graphPtr_->display_, drawable, - penOps->symbol.outlineGC, xpp, 13, CoordModeOrigin); - } - - delete [] polygon; -} - -void LineElement::drawDiamond(Display *display, Drawable drawable, - LinePen* penPtr, - int nSymbolPts, Point2d *symbolPts, int r1) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - /* - * The plus symbol is a closed polygon - * 1 of 4 points. The diagram to the left - * represents the positions of the points - * 0,4 x,y 2 which are computed below. The extra - * (fifth) point connects the first and - * 3 last points. - */ - Point pattern[5]; - pattern[1].y = pattern[0].x = -r1; - pattern[2].y = pattern[3].x = pattern[0].y = pattern[1].x = 0; - pattern[3].y = pattern[2].x = r1; - pattern[4] = pattern[0]; - - int count = 0; - XPoint* polygon = new XPoint[nSymbolPts*5]; - XPoint* xpp = polygon; - for (Point2d *pp = symbolPts, *endp = pp + nSymbolPts; pp < endp; pp++) { - if (DRAW_SYMBOL()) { - int rndx = (int)pp->x; - int rndy = (int)pp->y; - for (int ii=0; ii<5; ii++) { - xpp->x = (short)(pattern[ii].x + rndx); - xpp->y = (short)(pattern[ii].y + rndy); - xpp++; - } - count++; - } - symbolCounter_++; - } - - if (penOps->symbol.fillGC) { - XPoint* xpp = polygon; - for (int ii=0; ii<count; ii++, xpp += 5) - XFillPolygon(graphPtr_->display_, drawable, - penOps->symbol.fillGC, xpp, 5, Convex, CoordModeOrigin); - } - - if (penOps->symbol.outlineWidth > 0) { - XPoint* xpp = polygon; - for (int ii=0; ii<count; ii++, xpp += 5) - XDrawLines(graphPtr_->display_, drawable, - penOps->symbol.outlineGC, xpp, 5, CoordModeOrigin); - } - - delete [] polygon; -} - -#define B_RATIO 1.3467736870885982 -#define TAN30 0.57735026918962573 -#define COS30 0.86602540378443871 -void LineElement::drawArrow(Display *display, Drawable drawable, - LinePen* penPtr, - int nSymbolPts, Point2d *symbolPts, int size) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - double b = size * B_RATIO * 0.7 * 0.5; - short b2 = (short)b; - short h2 = (short)(TAN30 * b); - short h1 = (short)(b / COS30); - /* - * The triangle symbol is a closed polygon - * 0,3 of 3 points. The diagram to the left - * represents the positions of the points - * x,y which are computed below. The extra - * (fourth) point connects the first and - * 2 1 last points. - */ - - Point pattern[4]; - if (penOps->symbol.type == SYMBOL_ARROW) { - pattern[3].x = pattern[0].x = 0; - pattern[3].y = pattern[0].y = h1; - pattern[1].x = b2; - pattern[2].y = pattern[1].y = -h2; - pattern[2].x = -b2; - } else { - pattern[3].x = pattern[0].x = 0; - pattern[3].y = pattern[0].y = -h1; - pattern[1].x = b2; - pattern[2].y = pattern[1].y = h2; - pattern[2].x = -b2; - } - - int count = 0; - XPoint* polygon = new XPoint[nSymbolPts*4]; - XPoint* xpp = polygon; - for (Point2d *pp = symbolPts, *endp = pp + nSymbolPts; pp < endp; pp++) { - if (DRAW_SYMBOL()) { - int rndx = (int)pp->x; - int rndy = (int)pp->y; - for (int ii=0; ii<4; ii++) { - xpp->x = (short)(pattern[ii].x + rndx); - xpp->y = (short)(pattern[ii].y + rndy); - xpp++; - } - count++; - } - symbolCounter_++; - } - - if (penOps->symbol.fillGC) { - XPoint* xpp = polygon; - for (int ii=0; ii<count; ii++, xpp += 4) - XFillPolygon(graphPtr_->display_, drawable, - penOps->symbol.fillGC, xpp, 4, Convex, CoordModeOrigin); - } - - if (penOps->symbol.outlineWidth > 0) { - XPoint* xpp = polygon; - for (int ii=0; ii<count; ii++, xpp += 4) - XDrawLines(graphPtr_->display_, drawable, - penOps->symbol.outlineGC, xpp, 4, CoordModeOrigin); - } - - delete [] polygon; -} - -#define S_RATIO 0.886226925452758 -void LineElement::drawSymbols(Drawable drawable, LinePen* penPtr, int size, - int nSymbolPts, Point2d* symbolPts) -{ - LinePenOptions* penOps = (LinePenOptions*)penPtr->ops(); - - if (size < 3) { - if (penOps->symbol.fillGC) { - for (Point2d *pp = symbolPts, *endp = pp + nSymbolPts; pp < endp; pp++) - XDrawLine(graphPtr_->display_, drawable, penOps->symbol.fillGC, - (int)pp->x, (int)pp->y, (int)pp->x+1, (int)pp->y+1); - } - return; - } - - int r1 = (int)ceil(size * 0.5); - int r2 = (int)ceil(size * S_RATIO * 0.5); - - switch (penOps->symbol.type) { - case SYMBOL_NONE: - break; - case SYMBOL_SQUARE: - drawSquare(graphPtr_->display_, drawable, penPtr, nSymbolPts,symbolPts,r2); - break; - case SYMBOL_CIRCLE: - drawCircle(graphPtr_->display_, drawable, penPtr, nSymbolPts,symbolPts,r1); - break; - case SYMBOL_SPLUS: - case SYMBOL_SCROSS: - drawSCross(graphPtr_->display_, drawable, penPtr, nSymbolPts,symbolPts,r2); - break; - case SYMBOL_PLUS: - case SYMBOL_CROSS: - drawCross(graphPtr_->display_, drawable, penPtr, nSymbolPts,symbolPts,r2); - break; - case SYMBOL_DIAMOND: - drawDiamond(graphPtr_->display_, drawable, penPtr, nSymbolPts,symbolPts,r1); - break; - case SYMBOL_TRIANGLE: - case SYMBOL_ARROW: - drawArrow(graphPtr_->display_, drawable, penPtr, nSymbolPts,symbolPts,size); - break; - } -} - -void LineElement::drawTraces(Drawable drawable, LinePen* penPtr) -{ - for (ChainLink* link = Chain_FirstLink(traces_); link; - link = Chain_NextLink(link)) { - bltTrace* tracePtr = (bltTrace*)Chain_GetValue(link); - - int count = tracePtr->screenPts.length; - XPoint* points = new XPoint[count]; - XPoint*xpp = points; - for (int ii=0; ii<count; ii++, xpp++) { - xpp->x = (short)tracePtr->screenPts.points[ii].x; - xpp->y = (short)tracePtr->screenPts.points[ii].y; - } - XDrawLines(graphPtr_->display_, drawable, penPtr->traceGC_, points, - count, CoordModeOrigin); - delete [] points; - } -} - -void LineElement::drawValues(Drawable drawable, LinePen* penPtr, - int length, Point2d *points, int *map) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - LinePenOptions* pops = (LinePenOptions*)penPtr->ops(); - - char string[TCL_DOUBLE_SPACE * 2 + 2]; - const char* fmt = pops->valueFormat; - if (fmt == NULL) - fmt = "%g"; - TextStyle ts(graphPtr_, &pops->valueStyle); - - double* xval = ops->coords.x->values_; - double* yval = ops->coords.y->values_; - int count = 0; - - for (Point2d *pp = points, *endp = points + length; pp < endp; pp++) { - double x = xval[map[count]]; - double y = yval[map[count]]; - count++; - if (pops->valueShow == SHOW_X) - snprintf(string, TCL_DOUBLE_SPACE, fmt, x); - else if (pops->valueShow == SHOW_Y) - snprintf(string, TCL_DOUBLE_SPACE, fmt, y); - else if (pops->valueShow == SHOW_BOTH) { - snprintf(string, TCL_DOUBLE_SPACE, fmt, x); - strcat(string, ","); - snprintf(string + strlen(string), TCL_DOUBLE_SPACE, fmt, y); - } - - ts.drawText(drawable, string, pp->x, pp->y); - } -} - -void LineElement::printSymbols(PSOutput* psPtr, LinePen* penPtr, int size, - int nSymbolPts, Point2d *symbolPts) -{ - LinePenOptions* pops = (LinePenOptions*)penPtr->ops(); - - double symbolSize; - - // Set line and foreground attributes - XColor* fillColor = pops->symbol.fillColor; - if (!fillColor) - fillColor = pops->traceColor; - - XColor* outlineColor = pops->symbol.outlineColor; - if (!outlineColor) - outlineColor = pops->traceColor; - - if (pops->symbol.type == SYMBOL_NONE) - psPtr->setLineAttributes(pops->traceColor, pops->traceWidth + 2, - &pops->traceDashes, CapButt, JoinMiter); - else { - psPtr->setLineWidth(pops->symbol.outlineWidth); - psPtr->setDashes(NULL); - } - - // build DrawSymbolProc - psPtr->append("\n/DrawSymbolProc {\n"); - switch (pops->symbol.type) { - case SYMBOL_NONE: - break; - default: - psPtr->append(" "); - psPtr->setBackground(fillColor); - psPtr->append(" gsave fill grestore\n"); - - if (pops->symbol.outlineWidth > 0) { - psPtr->append(" "); - psPtr->setForeground(outlineColor); - psPtr->append(" stroke\n"); - } - break; - } - psPtr->append("} def\n\n"); - - // set size - symbolSize = (double)size; - switch (pops->symbol.type) { - case SYMBOL_SQUARE: - case SYMBOL_CROSS: - case SYMBOL_PLUS: - case SYMBOL_SCROSS: - case SYMBOL_SPLUS: - symbolSize = (double)size * S_RATIO; - break; - case SYMBOL_TRIANGLE: - case SYMBOL_ARROW: - symbolSize = (double)size * 0.7; - break; - case SYMBOL_DIAMOND: - symbolSize = (double)size * M_SQRT1_2; - break; - - default: - break; - } - - int count =0; - for (Point2d *pp=symbolPts, *endp=symbolPts + nSymbolPts; pp < endp; pp++) { - if (DRAW_SYMBOL()) { - psPtr->format("%g %g %g %s\n", pp->x, pp->y, symbolSize, - symbolMacros[pops->symbol.type]); - count++; - } - symbolCounter_++; - } -} - -void LineElement::setLineAttributes(PSOutput* psPtr, LinePen* penPtr) -{ - LinePenOptions* pops = (LinePenOptions*)penPtr->ops(); - - psPtr->setLineAttributes(pops->traceColor, pops->traceWidth, - &pops->traceDashes, CapButt, JoinMiter); - - if ((LineIsDashed(pops->traceDashes)) && - (pops->traceOffColor)) { - psPtr->append("/DashesProc {\n gsave\n "); - psPtr->setBackground(pops->traceOffColor); - psPtr->append(" "); - psPtr->setDashes(NULL); - psPtr->append("stroke\n grestore\n} def\n"); - } else { - psPtr->append("/DashesProc {} def\n"); - } -} - -void LineElement::printTraces(PSOutput* psPtr, LinePen* penPtr) -{ - setLineAttributes(psPtr, penPtr); - for (ChainLink* link = Chain_FirstLink(traces_); link; - link = Chain_NextLink(link)) { - bltTrace *tracePtr = (bltTrace*)Chain_GetValue(link); - if (tracePtr->screenPts.length > 0) { - psPtr->append("% start trace\n"); - psPtr->printMaxPolyline(tracePtr->screenPts.points, - tracePtr->screenPts.length); - psPtr->append("% end trace\n"); - } - } -} - -void LineElement::printValues(PSOutput* psPtr, LinePen* penPtr, - int nSymbolPts, Point2d *symbolPts, - int *pointToData) -{ - LineElementOptions* ops = (LineElementOptions*)ops_; - LinePenOptions* pops = (LinePenOptions*)penPtr->ops(); - - const char* fmt = pops->valueFormat; - if (fmt == NULL) - fmt = "%g"; - TextStyle ts(graphPtr_, &pops->valueStyle); - - int count = 0; - for (Point2d *pp=symbolPts, *endp=symbolPts + nSymbolPts; pp < endp; pp++) { - double x = ops->coords.x->values_[pointToData[count]]; - double y = ops->coords.y->values_[pointToData[count]]; - count++; - - char string[TCL_DOUBLE_SPACE * 2 + 2]; - if (pops->valueShow == SHOW_X) - snprintf(string, TCL_DOUBLE_SPACE, fmt, x); - else if (pops->valueShow == SHOW_Y) - snprintf(string, TCL_DOUBLE_SPACE, fmt, y); - else if (pops->valueShow == SHOW_BOTH) { - snprintf(string, TCL_DOUBLE_SPACE, fmt, x); - strcat(string, ","); - snprintf(string + strlen(string), TCL_DOUBLE_SPACE, fmt, y); - } - - ts.printText(psPtr, string, pp->x, pp->y); - } -} - - |