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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.
*/
#ifndef __BltGrElemLine_h__
#define __BltGrElemLine_h__
#include <tk.h>
#include "bltGrElem.h"
#include "bltGrPenLine.h"
typedef struct {
Point2d *screenPts;
int nScreenPts;
int *styleMap;
int *map;
} MapInfo;
typedef struct {
Point2d *points;
int length;
int *map;
} GraphPoints;
typedef struct {
int start;
GraphPoints screenPts;
} bltTrace;
typedef struct {
Weight weight;
LinePen* penPtr;
GraphPoints symbolPts;
GraphSegments xeb;
GraphSegments yeb;
int symbolSize;
int errorBarCapWidth;
} LineStyle;
typedef struct {
Element* elemPtr;
const char* label;
char** tags;
Axis* xAxis;
Axis* yAxis;
ElemCoords coords;
ElemValues* w;
ElemValues* xError;
ElemValues* yError;
ElemValues* xHigh;
ElemValues* xLow;
ElemValues* yHigh;
ElemValues* yLow;
int hide;
int legendRelief;
Blt_Chain stylePalette;
LinePen *builtinPenPtr;
LinePen *activePenPtr;
LinePen *normalPenPtr;
LinePenOptions builtinPen;
// derived
Tk_3DBorder fillBg;
int reqMaxSymbols;
double rTolerance;
int scaleSymbols;
int reqSmooth;
int penDir;
} LineElementOptions;
class LineElement : public Element {
public:
enum PenDirection {INCREASING, DECREASING, BOTH_DIRECTIONS};
enum Smoothing {LINEAR, STEP, CUBIC, QUADRATIC, CATROM};
protected:
LinePen* builtinPenPtr;
Smoothing smooth_;
Point2d *fillPts_;
int nFillPts_;
GraphPoints symbolPts_;
GraphPoints activePts_;
GraphSegments xeb_;
GraphSegments yeb_;
int symbolInterval_;
int symbolCounter_;
Blt_Chain traces_;
void drawCircle(Display*, Drawable, LinePen*, int, Point2d*, int);
void drawSquare(Display*, Drawable, LinePen*, int, Point2d*, int);
void drawSCross(Display*, Drawable, LinePen*, int, Point2d*, int);
void drawCross(Display*, Drawable, LinePen*, int, Point2d*, int);
void drawDiamond(Display*, Drawable, LinePen*, int, Point2d*, int);
void drawArrow(Display*, Drawable, LinePen*, int, Point2d*, int);
protected:
int scaleSymbol(int);
void getScreenPoints(MapInfo*);
void reducePoints(MapInfo*, double);
void generateSteps(MapInfo*);
void generateSpline(MapInfo*);
void generateParametricSpline(MapInfo*);
void mapSymbols(MapInfo*);
void mapActiveSymbols();
void mergePens(LineStyle**);
int outCode(Region2d*, Point2d*);
int clipSegment(Region2d*, int, int, Point2d*, Point2d*);
void saveTrace(int, int, MapInfo*);
void freeTraces();
void mapTraces(MapInfo*);
void mapFillArea(MapInfo*);
void mapErrorBars(LineStyle**);
void resetLine();
int closestTrace();
void closestPoint(ClosestSearch*);
void drawSymbols(Drawable, LinePen*, int, int, Point2d*);
void drawTraces(Drawable, LinePen*);
void drawValues(Drawable, LinePen*, int, Point2d*, int*);
void setLineAttributes(PostScript*, LinePen*);
void printTraces(PostScript*, LinePen*);
void printValues(PostScript*, LinePen*, int, Point2d*, int*);
void printSymbols(PostScript*, LinePen*, int, int, Point2d*);
double distanceToLine(int, int, Point2d*, Point2d*, Point2d*);
double distanceToX(int, int, Point2d*, Point2d*, Point2d*);
double distanceToY(int, int, Point2d*, Point2d*, Point2d*);
int simplify(Point2d*, int, int, double, int*);
double findSplit(Point2d*, int, int, int*);
public:
LineElement(Graph*, const char*, Tcl_HashEntry*);
virtual ~LineElement();
ClassId classId() {return CID_ELEM_LINE;}
const char* className() {return "LineElement";}
const char* typeName() {return "line";}
int configure();
void map();
void extents(Region2d*);
void closest();
void draw(Drawable);
void drawActive(Drawable);
void drawSymbol(Drawable, int, int, int);
void print(PostScript*);
void printActive(PostScript*);
void printSymbol(PostScript*, double, double, int);
};
#endif
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