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-rw-r--r--tkblt/generic/tkbltGrMarkerLine.C298
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diff --git a/tkblt/generic/tkbltGrMarkerLine.C b/tkblt/generic/tkbltGrMarkerLine.C
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index 82c9ab8..0000000
--- a/tkblt/generic/tkbltGrMarkerLine.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 1993-2004 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 <float.h>
-#include <stdlib.h>
-
-#include <cmath>
-
-#include "tkbltGraph.h"
-#include "tkbltGrMarkerLine.h"
-#include "tkbltGrMarkerOption.h"
-#include "tkbltGrMisc.h"
-#include "tkbltGrDef.h"
-#include "tkbltConfig.h"
-#include "tkbltGrPSOutput.h"
-
-using namespace Blt;
-
-#define BOUND(x, lo, hi) (((x) > (hi)) ? (hi) : ((x) < (lo)) ? (lo) : (x))
-
-static Tk_OptionSpec optionSpecs[] = {
- {TK_OPTION_CUSTOM, "-bindtags", "bindTags", "BindTags",
- "Line all", -1, Tk_Offset(LineMarkerOptions, tags),
- TK_OPTION_NULL_OK, &listObjOption, 0},
- {TK_OPTION_CUSTOM, "-cap", "cap", "Cap",
- "butt", -1, Tk_Offset(LineMarkerOptions, capStyle),
- 0, &capStyleObjOption, 0},
- {TK_OPTION_CUSTOM, "-coords", "coords", "Coords",
- NULL, -1, Tk_Offset(LineMarkerOptions, worldPts),
- TK_OPTION_NULL_OK, &coordsObjOption, 0},
- {TK_OPTION_CUSTOM, "-dashes", "dashes", "Dashes",
- NULL, -1, Tk_Offset(LineMarkerOptions, dashes),
- TK_OPTION_NULL_OK, &dashesObjOption, 0},
- {TK_OPTION_PIXELS, "-dashoffset", "dashOffset", "DashOffset",
- "0", -1, Tk_Offset(LineMarkerOptions, dashes.offset), 0, NULL, 0},
- {TK_OPTION_STRING, "-element", "element", "Element",
- NULL, -1, Tk_Offset(LineMarkerOptions, elemName),
- TK_OPTION_NULL_OK, NULL, 0},
- {TK_OPTION_COLOR, "-fill", "fill", "Fill",
- NULL, -1, Tk_Offset(LineMarkerOptions, fillColor),
- TK_OPTION_NULL_OK, NULL, 0},
- {TK_OPTION_CUSTOM, "-join", "join", "Join",
- "miter", -1, Tk_Offset(LineMarkerOptions, joinStyle),
- 0, &joinStyleObjOption, 0},
- {TK_OPTION_PIXELS, "-linewidth", "lineWidth", "LineWidth",
- "1", -1, Tk_Offset(LineMarkerOptions, lineWidth), 0, NULL, 0},
- {TK_OPTION_BOOLEAN, "-hide", "hide", "Hide",
- "no", -1, Tk_Offset(LineMarkerOptions, hide), 0, NULL, 0},
- {TK_OPTION_CUSTOM, "-mapx", "mapX", "MapX",
- "x", -1, Tk_Offset(LineMarkerOptions, xAxis), 0, &xAxisObjOption, 0},
- {TK_OPTION_CUSTOM, "-mapy", "mapY", "MapY",
- "y", -1, Tk_Offset(LineMarkerOptions, yAxis), 0, &yAxisObjOption, 0},
- {TK_OPTION_COLOR, "-outline", "outline", "Outline",
- STD_NORMAL_FOREGROUND, -1, Tk_Offset(LineMarkerOptions, outlineColor),
- TK_OPTION_NULL_OK, NULL, 0},
- {TK_OPTION_BOOLEAN, "-under", "under", "Under",
- "no", -1, Tk_Offset(LineMarkerOptions, drawUnder), 0, NULL, CACHE},
- {TK_OPTION_PIXELS, "-xoffset", "xOffset", "XOffset",
- "0", -1, Tk_Offset(LineMarkerOptions, xOffset), 0, NULL, 0},
- {TK_OPTION_PIXELS, "-yoffset", "yOffset", "YOffset",
- "0", -1, Tk_Offset(LineMarkerOptions, yOffset), 0, NULL, 0},
- {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0}
-};
-
-LineMarker::LineMarker(Graph* graphPtr, const char* name, Tcl_HashEntry* hPtr)
- : Marker(graphPtr, name, hPtr)
-{
- ops_ = (LineMarkerOptions*)calloc(1, sizeof(LineMarkerOptions));
- optionTable_ = Tk_CreateOptionTable(graphPtr->interp_, optionSpecs);
-
- gc_ =NULL;
- segments_ =NULL;
- nSegments_ =0;
-}
-
-LineMarker::~LineMarker()
-{
- if (gc_)
- graphPtr_->freePrivateGC(gc_);
- delete [] segments_;
-}
-
-int LineMarker::configure()
-{
- LineMarkerOptions* ops = (LineMarkerOptions*)ops_;
-
- unsigned long gcMask = (GCLineWidth | GCLineStyle | GCCapStyle | GCJoinStyle);
- XGCValues gcValues;
- if (ops->outlineColor) {
- gcMask |= GCForeground;
- gcValues.foreground = ops->outlineColor->pixel;
- }
- if (ops->fillColor) {
- gcMask |= GCBackground;
- gcValues.background = ops->fillColor->pixel;
- }
- gcValues.cap_style = ops->capStyle;
- gcValues.join_style = ops->joinStyle;
- gcValues.line_width = ops->lineWidth;
- gcValues.line_style = LineSolid;
- if (LineIsDashed(ops->dashes)) {
- gcValues.line_style =
- (gcMask & GCBackground) ? LineDoubleDash : LineOnOffDash;
- }
-
- GC newGC = graphPtr_->getPrivateGC(gcMask, &gcValues);
- if (gc_)
- graphPtr_->freePrivateGC(gc_);
-
- if (LineIsDashed(ops->dashes))
- graphPtr_->setDashes(newGC, &ops->dashes);
- gc_ = newGC;
-
- return TCL_OK;
-}
-
-void LineMarker::draw(Drawable drawable)
-{
- if (nSegments_ > 0)
- graphPtr_->drawSegments(drawable, gc_, segments_, nSegments_);
-}
-
-void LineMarker::map()
-{
- LineMarkerOptions* ops = (LineMarkerOptions*)ops_;
-
- delete [] segments_;
- segments_ = NULL;
- nSegments_ = 0;
-
- if (!ops->worldPts || (ops->worldPts->num < 2))
- return;
-
- Region2d extents;
- graphPtr_->extents(&extents);
-
- // Allow twice the number of world coordinates. The line will represented
- // as series of line segments, not one continous polyline. This is
- // because clipping against the plot area may chop the line into several
- // disconnected segments.
-
- Segment2d* segments = new Segment2d[ops->worldPts->num];
- Point2d* srcPtr = ops->worldPts->points;
- Point2d p = mapPoint(srcPtr, ops->xAxis, ops->yAxis);
- p.x += ops->xOffset;
- p.y += ops->yOffset;
-
- Segment2d* segPtr = segments;
- Point2d* pend;
- for (srcPtr++, pend = ops->worldPts->points + ops->worldPts->num;
- srcPtr < pend; srcPtr++) {
- Point2d next = mapPoint(srcPtr, ops->xAxis, ops->yAxis);
- next.x += ops->xOffset;
- next.y += ops->yOffset;
- Point2d q = next;
-
- if (lineRectClip(&extents, &p, &q)) {
- segPtr->p = p;
- segPtr->q = q;
- segPtr++;
- }
- p = next;
- }
- nSegments_ = segPtr - segments;
- segments_ = segments;
- clipped_ = (nSegments_ == 0);
-}
-
-int LineMarker::pointIn(Point2d *samplePtr)
-{
- GraphOptions* gops = (GraphOptions*)graphPtr_->ops_;
- return pointInSegments(samplePtr, segments_, nSegments_,
- (double)gops->search.halo);
-}
-
-int LineMarker::pointInSegments(Point2d* samplePtr, Segment2d* segments,
- int nSegments, double halo)
-{
- double minDist = DBL_MAX;
- for (Segment2d *sp = segments, *send = sp + nSegments; sp < send; sp++) {
- Point2d t = getProjection((int)samplePtr->x, (int)samplePtr->y,
- &sp->p, &sp->q);
- double right;
- double left;
- if (sp->p.x > sp->q.x) {
- right = sp->p.x;
- left = sp->q.x;
- }
- else {
- right = sp->q.x;
- left = sp->p.x;
- }
-
- double top;
- double bottom;
- if (sp->p.y > sp->q.y) {
- bottom = sp->p.y;
- top = sp->q.y;
- }
- else {
- bottom = sp->q.y;
- top = sp->p.y;
- }
-
- Point2d p;
- p.x = BOUND(t.x, left, right);
- p.y = BOUND(t.y, top, bottom);
-
- double dist = hypot(p.x - samplePtr->x, p.y - samplePtr->y);
- if (dist < minDist)
- minDist = dist;
- }
-
- return (minDist < halo);
-}
-
-int LineMarker::regionIn(Region2d *extsPtr, int enclosed)
-{
- LineMarkerOptions* ops = (LineMarkerOptions*)ops_;
-
- if (!ops->worldPts || ops->worldPts->num < 2)
- return 0;
-
- if (enclosed) {
- for (Point2d *pp = ops->worldPts->points, *pend = pp + ops->worldPts->num;
- pp < pend; pp++) {
- Point2d p = mapPoint(pp, ops->xAxis, ops->yAxis);
- if ((p.x < extsPtr->left) && (p.x > extsPtr->right) &&
- (p.y < extsPtr->top) && (p.y > extsPtr->bottom)) {
- return 0;
- }
- }
- return 1;
- }
- else {
- int count = 0;
- for (Point2d *pp=ops->worldPts->points, *pend=pp+(ops->worldPts->num - 1);
- pp < pend; pp++) {
- Point2d p = mapPoint(pp, ops->xAxis, ops->yAxis);
- Point2d q = mapPoint(pp + 1, ops->xAxis, ops->yAxis);
- if (lineRectClip(extsPtr, &p, &q))
- count++;
- }
- return (count > 0); /* At least 1 segment passes through
- * region. */
- }
-}
-
-void LineMarker::print(PSOutput* psPtr)
-{
- LineMarkerOptions* ops = (LineMarkerOptions*)ops_;
-
- if (nSegments_ > 0) {
- psPtr->setLineAttributes(ops->outlineColor, ops->lineWidth,
- &ops->dashes, ops->capStyle, ops->joinStyle);
- if ((LineIsDashed(ops->dashes)) && (ops->fillColor)) {
- psPtr->append("/DashesProc {\n gsave\n ");
- psPtr->setBackground(ops->fillColor);
- psPtr->append(" ");
- psPtr->setDashes(NULL);
- psPtr->append("stroke\n");
- psPtr->append("grestore\n");
- psPtr->append("} def\n");
- }
- else
- psPtr->append("/DashesProc {} def\n");
-
- psPtr->printSegments(segments_, nSegments_);
- }
-}
-
-
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