// Copyright 2001-2004 freehep
package org.freehep.graphicsio;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.io.IOException;
/**
* Interface for objects that are capable of constructing paths. Path painting
* (stroking or filling) is not included.
*
* @author Simon Fischer
* @version $Id: PathConstructor.java,v 1.4 2009-08-17 21:44:45 murkle Exp $
*/
public interface PathConstructor {
/**
* Makes (x,y) the current point.
*/
public void move(double x, double y) throws IOException;
/**
* Draws a line from the current point to (x,y) and make (x,y) the current
* point.
*/
public void line(double x, double y) throws IOException;
/**
* Draws a quadratic bezier curve from the current point to (x2, y2) using
* the control point (x1, y1) and make (x2, y2) the current point.
*/
public void quad(double x1, double y1, double x2, double y2)
throws IOException;
/**
* Draws a cubic bezier curve from the current point to (x3, y3) using the
* control points (x1, y1) and (x2, y2) and make (x3, y3) the current point.
*/
public void cubic(double x1, double y1, double x2, double y2, double x3,
double y3) throws IOException;
/**
* Closes the path by drawing a straight line to the last point which was
* argument to move.
*/
public void closePath(double x0, double y0) throws IOException;
/**
* Flushes any cached info to the output file. The path is complete at this
* point.
*/
public void flush() throws IOException;
/**
* Adds the <i>points</i> of the shape using path <i>construction</i>
* operators. The path is neither stroked nor filled.
*
* @return true if even-odd winding rule should be used, false if non-zero
* winding rule should be used.
*/
public boolean addPath(Shape s) throws IOException;
/**
* Adds the <i>points</i> of the shape using path <i>construction</i>
* operators, using the given transform. The path is neither stroked nor
* filled.
*
* @return true if even-odd winding rule should be used, false if non-zero
* winding rule should be used.
*/
public boolean addPath(Shape s, AffineTransform transform)
throws IOException;
}