/*
* Copyright 2009 Hao Nguyen
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package gwt.g2d.client.graphics.visitor;
import gwt.g2d.client.graphics.Surface;
import gwt.g2d.client.graphics.canvas.Context;
import gwt.g2d.client.math.Vector2;
/**
* Adds a line to the current subpath.
* The new position will be set to the end point of the line.
*
* @author hao1300@gmail.com
*/
public class LineSegmentVisitor implements ShapeVisitor {
private final double fromX, fromY, toX, toY;
/**
* Adds a straight line from fromPosition to toPosition.
*/
public LineSegmentVisitor(Vector2 fromPosition, Vector2 toPosition) {
this(fromPosition.getX(), fromPosition.getY(), toPosition.getX(), toPosition.getY());
}
/**
* Adds a straight line from (fromX, fromY) to (toX, toY).
*/
public LineSegmentVisitor(double fromX, double fromY, double toX, double toY) {
this.fromX = fromX;
this.fromY = fromY;
this.toX = toX;
this.toY = toY;
}
@Override
public void visit(Surface surface) {
Context context = surface.getContext();
context.moveTo(fromX, fromY);
context.lineTo(toX, toY);
}
}