4

是否可以将a com.vividsolutions.jts.geom.Geometry（或其子类）转换为实现的类java.awt.Shape？我可以使用哪个库或方法来实现该目标？

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2 回答 2

9

还可以查看JTS 库提供的ShapeWriter 。我使用以下代码将 jts 几何对象转换为 awt 形状。

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;

import javax.swing.JFrame;
import javax.swing.JPanel;

import com.vividsolutions.jts.awt.ShapeWriter;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.Polygon;

public class Paint extends JPanel{
    public void paint(Graphics g) {

        Coordinate[] coords  = new Coordinate[] {new Coordinate(400, 0),  new Coordinate(200, 200),  new Coordinate(400, 400), new Coordinate(600, 200), new Coordinate(400, 0) };
        Polygon polygon = new GeometryFactory().createPolygon(coords);

        LineString ls = new GeometryFactory().createLineString(new Coordinate[] {new Coordinate(20, 20),  new Coordinate(200, 20)});

        ShapeWriter sw = new ShapeWriter();
        Shape polyShape = sw.toShape(polygon);
        Shape linShape = sw.toShape(ls);

        ((Graphics2D) g).draw(polyShape);
        ((Graphics2D) g).draw(linShape);


    }
    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.getContentPane().add(new Paint());
        f.setSize(700, 700);
        f.setVisible(true);
    }
}

编辑：结果看起来像这张图片awt中jts几何对象的可视化

于 2015-06-10T09:29:10.977 回答
2

根据：

http://lists.jump-project.org/pipermail/jts-devel/2007-May/001954.html

有一堂课：

com.vividsolutions.jump.workbench.ui.renderer.java2D.Java2DConverter

哪个可以做到？

于 2008-09-24T21:08:24.047 回答