/*

* This file is part of NodeBox.

*

* Copyright (C) 2008 Frederik De Bleser (frederik@pandora.be)

*

* NodeBox is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* NodeBox is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with NodeBox. If not, see <http://www.gnu.org/licenses/>.

*/

package nodebox.graphics;

/**

* @author Frederik

*/

public class PathElement {

public static final int MOVETO = 0;

public static final int LINETO = 1;

public static final int CURVETO = 2;

public static final int CLOSE = 3;

private int command;

private Point point, control1, control2;

public PathElement() {

}

public PathElement(int command) {

assert (command == CLOSE);

this.command = command;

this.point = new Point(0, 0);

this.control1 = new Point(0, 0);

this.control2 = new Point(0, 0);

}

public PathElement(int command, float x, float y) {

assert (command == MOVETO || command == LINETO);

this.command = command;

this.point = new Point(x, y);

this.control1 = new Point(0, 0);

this.control2 = new Point(0, 0);

}

public PathElement(int command, float x1, float y1, float x2, float y2, float x3, float y3) {

assert (command == CURVETO);

this.command = command;

this.control1 = new Point(x1, y1);

this.control2 = new Point(x2, y2);

this.point = new Point(x3, y3);

}

public PathElement(int command, float[] points) {

this.command = command;

switch (command) {

case MOVETO:

case LINETO:

assert (points.length == 2);

this.point = new Point(points[0], points[1]);

break;

case CURVETO:

assert (points.length == 6);

this.control1 = new Point(points[0], points[1]);

this.control2 = new Point(points[2], points[3]);

this.point = new Point(points[4], points[5]);

break;

case CLOSE:

assert (points.length == 0);

break;

default:

throw new AssertionError("Unknown command" + command);

}

}

public PathElement(PathElement other) {

this.command = other.command;

this.control1 = other.control1 == null ? null : other.control1.clone();

this.control2 = other.control2 == null ? null : other.control2.clone();

this.point = other.point == null ? null : other.point.clone();

}

public int getCommand() {

return command;

}

public void setCommand(int command) {

this.command = command;

}

public Point getPoint() {

return point;

}

public float getX() {

return point.getX();

}

public float getY() {

return point.getY();

}

public void setPoint(Point point) {

this.point = point;

}

public void setX(float x) {

point.setX(x);

}

public void setY(float y) {

point.setY(y);

}

public Point getControl1() {

return control1;

}

public void setControl1(Point control1) {

this.control1 = control1;

}

public Point getControl2() {

return control2;

}

public void setControl2(Point control2) {

this.control2 = control2;

}

@Override

public boolean equals(Object o) {

if (this == o) return true;

if (!(o instanceof PathElement)) return false;

PathElement el = (PathElement) o;

return command == el.command &&

point.equals(el.point) &&

control1.equals(el.control1) &&

control2.equals(el.control2);

}

@Override

public String toString() {

switch (command) {

case MOVETO:

return "PathElement(Command.MOVETO, " + getX() + ", " + getY() + ")";

case LINETO:

return "PathElement(Command.LINETO, " + getX() + ", " + getY() + ")";

case CURVETO:

return "PathElement(Command.CURVETO, " + getControl1().getX() + ", " + getControl1().getY()

+ ", " + getControl2().getX() + ", " + getControl2().getY() + ", "

+ getX() + ", " + getY() + ")";

case CLOSE:

return "PathElement(Command.CLOSE)";

}

throw new AssertionError("Invalid PathElement command " + command);

}

@Override

public PathElement clone() {

return new PathElement(this);

}

}