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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 "bltGrElem.h"
#include "bltGrPenLine.h"
typedef enum {
PEN_INCREASING, PEN_DECREASING, PEN_BOTH_DIRECTIONS
} PenDirection;
typedef struct {
Point2d *screenPts;
int nScreenPts;
int *styleMap;
int *map;
} MapInfo;
typedef enum {
PEN_SMOOTH_LINEAR, PEN_SMOOTH_STEP, PEN_SMOOTH_NATURAL,
PEN_SMOOTH_QUADRATIC, PEN_SMOOTH_CATROM
} Smoothing;
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 lines;
GraphSegments xeb;
GraphSegments yeb;
int symbolSize;
int errorBarCapWidth;
} LineStyle;
typedef struct {
Element* elemPtr;
const char* label;
char** tags;
Axis2d axes;
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
XColor* fillFgColor;
Tk_3DBorder fillBg;
int reqMaxSymbols;
double rTolerance;
int scaleSymbols;
Smoothing reqSmooth;
int penDir;
} LineElementOptions;
class LineElement : public Element {
protected:
LinePen* builtinPenPtr;
Smoothing smooth_;
XColor* fillBgColor_;
GC fillGC_;
Point2d *fillPts_;
int nFillPts_;
GraphPoints symbolPts_;
GraphPoints activePts_;
GraphSegments xeb_;
GraphSegments yeb_;
GraphSegments lines_;
int symbolInterval_;
int symbolCounter_;
Blt_Chain traces_;
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 ResetLine();
void MapErrorBars(LineStyle**);
int ClosestTrace();
void ClosestPoint(ClosestSearch*);
void DrawCircles(Display*, Drawable, LinePen*, int, Point2d*, int);
void DrawSquares(Display*, Drawable, LinePen*, int, Point2d*, int);
void DrawSymbols(Drawable, LinePen*, int, int, Point2d*);
void DrawTraces(Drawable, LinePen*);
void DrawValues(Drawable, LinePen*, int, Point2d*, int*);
void SetLineAttributes(Blt_Ps, LinePen*);
void TracesToPostScript(Blt_Ps, LinePen*);
void ValuesToPostScript(Blt_Ps, LinePen*, int, Point2d*, int*);
double DistanceToLine(int, int, Point2d*, Point2d*, Point2d*);
double DistanceToX(int, int, Point2d*, Point2d*, Point2d*);
double DistanceToY(int, int, Point2d*, Point2d*, Point2d*);
void GetSymbolPostScriptInfo(Blt_Ps, LinePen*, int);
void SymbolsToPostScript(Blt_Ps, LinePen*, int, int, 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(Blt_Ps);
void printActive(Blt_Ps);
void printSymbol(Blt_Ps, double, double, int);
};
#endif
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