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-rw-r--r--tkblt/generic/tkbltGrMarkerPolygon.C298
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diff --git a/tkblt/generic/tkbltGrMarkerPolygon.C b/tkblt/generic/tkbltGrMarkerPolygon.C
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--- a/tkblt/generic/tkbltGrMarkerPolygon.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 <stdlib.h>
-
-#include "tkbltGraph.h"
-#include "tkbltGrMarkerPolygon.h"
-#include "tkbltGrMarkerOption.h"
-#include "tkbltGrMisc.h"
-#include "tkbltGrDef.h"
-#include "tkbltConfig.h"
-#include "tkbltGrPSOutput.h"
-
-using namespace Blt;
-
-static Tk_OptionSpec optionSpecs[] = {
- {TK_OPTION_CUSTOM, "-bindtags", "bindTags", "BindTags",
- "Polygon all", -1, Tk_Offset(PolygonMarkerOptions, tags),
- TK_OPTION_NULL_OK, &listObjOption, 0},
- {TK_OPTION_CUSTOM, "-cap", "cap", "Cap",
- "butt", -1, Tk_Offset(PolygonMarkerOptions, capStyle),
- 0, &capStyleObjOption, 0},
- {TK_OPTION_CUSTOM, "-coords", "coords", "Coords",
- NULL, -1, Tk_Offset(PolygonMarkerOptions, worldPts),
- TK_OPTION_NULL_OK, &coordsObjOption, 0},
- {TK_OPTION_CUSTOM, "-dashes", "dashes", "Dashes",
- NULL, -1, Tk_Offset(PolygonMarkerOptions, dashes),
- TK_OPTION_NULL_OK, &dashesObjOption, 0},
- {TK_OPTION_STRING, "-element", "element", "Element",
- NULL, -1, Tk_Offset(PolygonMarkerOptions, elemName),
- TK_OPTION_NULL_OK, NULL, 0},
- {TK_OPTION_COLOR, "-fill", "fill", "Fill",
- NULL, -1, Tk_Offset(PolygonMarkerOptions, fill),
- TK_OPTION_NULL_OK, NULL, 0},
- {TK_OPTION_CUSTOM, "-join", "join", "Join",
- "miter", -1, Tk_Offset(PolygonMarkerOptions, joinStyle),
- 0, &joinStyleObjOption, 0},
- {TK_OPTION_PIXELS, "-linewidth", "lineWidth", "LineWidth",
- "1", -1, Tk_Offset(PolygonMarkerOptions, lineWidth), 0, NULL, 0},
- {TK_OPTION_BOOLEAN, "-hide", "hide", "Hide",
- "no", -1, Tk_Offset(PolygonMarkerOptions, hide), 0, NULL, 0},
- {TK_OPTION_CUSTOM, "-mapx", "mapX", "MapX",
- "x", -1, Tk_Offset(PolygonMarkerOptions, xAxis), 0, &xAxisObjOption, 0},
- {TK_OPTION_CUSTOM, "-mapy", "mapY", "MapY",
- "y", -1, Tk_Offset(PolygonMarkerOptions, yAxis), 0, &yAxisObjOption, 0},
- {TK_OPTION_COLOR, "-outline", "outline", "Outline",
- STD_NORMAL_FOREGROUND, -1, Tk_Offset(PolygonMarkerOptions, outline),
- TK_OPTION_NULL_OK, NULL, 0},
- {TK_OPTION_BOOLEAN, "-under", "under", "Under",
- "no", -1, Tk_Offset(PolygonMarkerOptions, drawUnder), 0, NULL, CACHE},
- {TK_OPTION_PIXELS, "-xoffset", "xOffset", "XOffset",
- "0", -1, Tk_Offset(PolygonMarkerOptions, xOffset), 0, NULL, 0},
- {TK_OPTION_PIXELS, "-yoffset", "yOffset", "YOffset",
- "0", -1, Tk_Offset(PolygonMarkerOptions, yOffset), 0, NULL, 0},
- {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0}
-};
-
-PolygonMarker::PolygonMarker(Graph* graphPtr, const char* name,
- Tcl_HashEntry* hPtr)
- : Marker(graphPtr, name, hPtr)
-{
- ops_ = (PolygonMarkerOptions*)calloc(1, sizeof(PolygonMarkerOptions));
- optionTable_ = Tk_CreateOptionTable(graphPtr->interp_, optionSpecs);
-
- screenPts_ =NULL;
- outlineGC_ =NULL;
- fillGC_ =NULL;
- fillPts_ =NULL;
- nFillPts_ =0;
- outlinePts_ =NULL;
- nOutlinePts_ =0;
-}
-
-PolygonMarker::~PolygonMarker()
-{
- if (fillGC_)
- Tk_FreeGC(graphPtr_->display_, fillGC_);
- if (outlineGC_)
- graphPtr_->freePrivateGC(outlineGC_);
- delete [] fillPts_;
- delete [] outlinePts_;
- delete [] screenPts_;
-}
-
-int PolygonMarker::configure()
-{
- PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
-
- // outlineGC
- unsigned long gcMask = (GCLineWidth | GCLineStyle);
- XGCValues gcValues;
- if (ops->outline) {
- gcMask |= GCForeground;
- gcValues.foreground = ops->outline->pixel;
- }
- gcMask |= (GCCapStyle | GCJoinStyle);
- gcValues.cap_style = ops->capStyle;
- gcValues.join_style = ops->joinStyle;
- gcValues.line_style = LineSolid;
- gcValues.dash_offset = 0;
- gcValues.line_width = ops->lineWidth;
- if (LineIsDashed(ops->dashes))
- gcValues.line_style = LineOnOffDash;
-
- GC newGC = graphPtr_->getPrivateGC(gcMask, &gcValues);
- if (LineIsDashed(ops->dashes))
- graphPtr_->setDashes(newGC, &ops->dashes);
- if (outlineGC_)
- graphPtr_->freePrivateGC(outlineGC_);
- outlineGC_ = newGC;
-
- // fillGC
- gcMask = 0;
- if (ops->fill) {
- gcMask |= GCForeground;
- gcValues.foreground = ops->fill->pixel;
- }
- newGC = Tk_GetGC(graphPtr_->tkwin_, gcMask, &gcValues);
- if (fillGC_)
- Tk_FreeGC(graphPtr_->display_, fillGC_);
- fillGC_ = newGC;
-
- return TCL_OK;
-}
-
-void PolygonMarker::draw(Drawable drawable)
-{
- PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
-
- // fill region
- if ((nFillPts_ > 0) && (ops->fill)) {
- XPoint* points = new XPoint[nFillPts_];
- if (!points)
- return;
-
- XPoint* dp = points;
- for (Point2d *sp = fillPts_, *send = sp + nFillPts_; sp < send; sp++) {
- dp->x = (short)sp->x;
- dp->y = (short)sp->y;
- dp++;
- }
-
- XFillPolygon(graphPtr_->display_, drawable, fillGC_, points,
- nFillPts_, Complex, CoordModeOrigin);
- delete [] points;
- }
-
- // outline
- if ((nOutlinePts_ > 0) && (ops->lineWidth > 0) && (ops->outline))
- graphPtr_->drawSegments(drawable, outlineGC_, outlinePts_, nOutlinePts_);
-}
-
-void PolygonMarker::map()
-{
- PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
-
- if (outlinePts_) {
- delete [] outlinePts_;
- outlinePts_ = NULL;
- nOutlinePts_ = 0;
- }
-
- if (fillPts_) {
- delete [] fillPts_;
- fillPts_ = NULL;
- nFillPts_ = 0;
- }
-
- if (screenPts_) {
- delete [] screenPts_;
- screenPts_ = NULL;
- }
-
- if (!ops->worldPts || ops->worldPts->num < 3)
- return;
-
- // Allocate and fill a temporary array to hold the screen coordinates of
- // the polygon.
-
- int nScreenPts = ops->worldPts->num + 1;
- Point2d* screenPts = new Point2d[nScreenPts + 1];
- {
- Point2d* dp = screenPts;
- for (Point2d *sp = ops->worldPts->points, *send = sp + ops->worldPts->num;
- sp < send; sp++) {
- *dp = mapPoint(sp, ops->xAxis, ops->yAxis);
- dp->x += ops->xOffset;
- dp->y += ops->yOffset;
- dp++;
- }
- *dp = screenPts[0];
- }
- Region2d extents;
- graphPtr_->extents(&extents);
-
- clipped_ = 1;
- if (ops->fill) {
- Point2d* lfillPts = new Point2d[nScreenPts * 3];
- int n = polyRectClip(&extents, screenPts, ops->worldPts->num,lfillPts);
- if (n < 3)
- delete [] lfillPts;
- else {
- nFillPts_ = n;
- fillPts_ = lfillPts;
- clipped_ = 0;
- }
- }
- if ((ops->outline) && (ops->lineWidth > 0)) {
- // Generate line segments representing the polygon outline. The
- // resulting outline may or may not be closed from viewport clipping.
- Segment2d* outlinePts = new Segment2d[nScreenPts];
- if (!outlinePts)
- return;
-
- // Note that this assumes that the point array contains an extra point
- // that closes the polygon.
- Segment2d* segPtr = outlinePts;
- for (Point2d *sp=screenPts, *send=sp+(nScreenPts - 1); sp < send; sp++) {
- segPtr->p = sp[0];
- segPtr->q = sp[1];
- if (lineRectClip(&extents, &segPtr->p, &segPtr->q)) {
- segPtr++;
- }
- }
- nOutlinePts_ = segPtr - outlinePts;
- outlinePts_ = outlinePts;
- if (nOutlinePts_ > 0)
- clipped_ = 0;
- }
-
- screenPts_ = screenPts;
-}
-
-int PolygonMarker::pointIn(Point2d *samplePtr)
-{
- PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
-
- if (ops->worldPts && (ops->worldPts->num >= 3) && screenPts_)
- return pointInPolygon(samplePtr, screenPts_, ops->worldPts->num + 1);
-
- return 0;
-}
-
-int PolygonMarker::regionIn(Region2d *extsPtr, int enclosed)
-{
- PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
-
- if (ops->worldPts && (ops->worldPts->num >= 3) && screenPts_)
- return regionInPolygon(extsPtr, screenPts_, ops->worldPts->num, enclosed);
-
- return 0;
-}
-
-void PolygonMarker::print(PSOutput* psPtr)
-{
- PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
-
- if (ops->fill) {
- psPtr->printPolyline(fillPts_, nFillPts_);
- psPtr->setForeground(ops->fill);
- psPtr->append("fill\n");
- }
-
- if ((ops->lineWidth > 0) && (ops->outline)) {
- psPtr->setLineAttributes(ops->outline, ops->lineWidth, &ops->dashes,
- ops->capStyle, ops->joinStyle);
- psPtr->append("/DashesProc {} def\n");
-
- psPtr->printSegments(outlinePts_, nOutlinePts_);
- }
-}
-
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