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/** Path.hpp
* zinclib
*
* This software is the property of IntuiLab SA, France.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Here we defines The ZincPath object
*
* 08/03/05
*
* Contributors:
* Benoit Peccatte <peccatte@intuilab.com>
*
*/
#include "ZincTypes.hpp"
#include <list>
#include <tcl.h>
#ifndef ZINC_PATH
#define ZINC_PATH
class ZincPath
{
double firstX, firstY; //first point's coordinate
double lastX, lastY; //last point's coordinate
Tcl_Obj* path; //list of points
/**
* Append the point to the real path
*
* @param x,y the point coordinate
* @param c true if the point is a control point
*/
inline void addPoint (double x, double y, bool c);
/**
* Convert ellipse from SVG form to centered form (used only by arcTo)
*
* @param x0,y0 origin of the arc
* @param rx x-radius of ellipse in degree (can be modified)
* @param ry y-radius of ellipse in degree (can be modified)
* @param phi rotation of ellipse in degree (can be modified)
* @param largeArc true if the large part of the ellipse
* @param sweep true for a positive angle direction for the drawing
* @param x,y destination point
* @param cx,cy center coordinate
* @param theta begining of arc in degree
* @param delta extent of arc in degree
*/
void convertFromSvg (double x0, double y0, double &rx, double &ry, double &phi,
bool larcgeArc, bool sweep, double x, double y,
double &cx, double &cy, double &theta, double &delta);
public:
/**
* The public constructor
*
* @param x,y the initial point
*/
ZincPath (double x, double y);
/**
* The public destructor
*
* @warning Do not destroy a ZincPath if Zinc is not loaded
*/
~ZincPath ();
/******************************************
ZincPath manipulation
******************************************/
/**
* Close current path
*/
void close ();
/**
* Draw a line from current point to next point
*
* @param x,y next point
*/
void lineTo (double x, double y);
/**
* Draw a cubic bezier using specified control and destination points
* call cubicBezierTo
*
* @param cx1,cy1 first control point
* @param cx2,cy2 second control point
* @param x,y destination point
*/
void curveTo (double cx1, double cy1, double cx2, double cy2,
double x, double y);
/**
* Draw a cubic bezier using specified control and destination points
*
* @param cx1,cy1 first control point
* @param cx2,cy2 second control point
* @param x,y destination point
*/
void cubicBezierTo (double cx1, double cy1, double cx2, double cy2,
double x, double y);
/**
* Draw a quadratic bezier using specified control and destination point
*
* @param cx1,cy1 first control point
* @param cx2,cy2 second control point
* @param x,y destination point
*/
void quadraticBezierTo (double cx, double cy, double x, double y);
/**
* Draw an arc from current point to x,y
*
* @param rx x-radius of ellipse
* @param ry y-radius of ellipse
* @param xAxisRotation rotation of ellipse
* @param largeArc true if the large part of the ellipse
* @param sweepFlag true for a positive angle direction for the drawing
* @param x,y destination point
*/
void arcTo (double rx, double ry, double xAxisRotation, bool largeArc,
bool sweepFlag, double x, double y);
/**
* Return a Tcl_Obj* containing a list of coords points
* It's up to the caller to delete the resulting table
*
* @return a Tcl_Obj* of type list
*/
Tcl_Obj* getTable ();
};
#endif
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