所以我正在研究一个三角形类,我想使用 Point2D.Double 来存储高精度的点。
import java.awt.geom.Point2D.Double;
public class Triangle {
private Double pointOne = new Double();
private Double pointTwo = new Double();
private Double pointThree = new Double();
private final float PERCISION = 0.009f;
public Triangle(double x1, double y1, double x2, double y2, double x3, double y3)
{
pointOne.x = x1;
pointOne.y = y1;
pointOne.setLocation(x2, y2);
pointOne.setLocation(x3, y3);
}
public Double getPointOne()
{
return pointOne;
}
public Double getPointTwo()
{
return pointTwo;
}
public Double getPointThree()
{
return pointThree;
}
但是,当我在 main 中测试它并输入下面的代码时,它会打印出坐标,但精度非常低。我尝试使用浮点数,但它总是以相同的结果结束。
Triangle tri = new Triangle( 0.0000, 0.0000, 2.0008, 0.0000, 0.0000, 2.0000);
System.out.println("Point 1 coordinates: (" + tri.getPointOne().getX() + ", " + tri.getPointOne().getY() + ")");
System.out.println("Point 2 coordinates: (" + tri.getPointTwo().getX() + ", " + tri.getPointTwo().getY() + ")");
System.out.println("Point 3 coordinates: (" + tri.getPointThree().getX() + ", " + tri.getPointThree().getY() + ")");
这是它打印出来的内容,以备不时之需。
点 1 坐标:(0.0, 2.0)
点 2 坐标:(0.0, 0.0)
点 3 坐标:(0.0, 0.0)
理想情况下,这就是我希望它打印出来的内容。
点 1 坐标:(0.0000, 2.0008)
点 2 坐标:(0.0000, 0.0000)
点 3 坐标:(0.0000, 0.0000)
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