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java line2d坐標(biāo)轉(zhuǎn)換怎么進(jìn)行

小樊
81
2024-09-20 20:32:23
欄目: 編程語言

在Java中，Line2D類表示二維空間中的直線。如果你需要將Line2D對象的坐標(biāo)進(jìn)行轉(zhuǎn)換，可以使用以下方法：

  1. 平移（Translation）：

要將Line2D對象沿x軸和y軸移動到新的位置，可以使用以下代碼：

import java.awt.geom.Line2D;

public class Main {
    public static void main(String[] args) {
        Line2D line = new Line2D.Double(1, 2, 3, 4);

        // 平移向量
        double dx = 5;
        double dy = -3;

        // 計(jì)算新的起點(diǎn)和終點(diǎn)
        double newStartX = line.getX1() + dx;
        double newStartY = line.getY1() + dy;
        double newEndX = line.getX2() + dx;
        double newEndY = line.getY2() + dy;

        // 創(chuàng)建新的Line2D對象
        Line2D newLine = new Line2D.Double(newStartX, newStartY, newEndX, newEndY);

        System.out.println("原始直線: (" + line.getX1() + ", " + line.getY1() + ") - (" + line.getX2() + ", " + line.getY2() + ")");
        System.out.println("平移后的直線: (" + newLine.getX1() + ", " + newLine.getY1() + ") - (" + newLine.getX2() + ", " + newLine.getY2() + ")");
    }
}
  1. 縮放（Scaling）：

要將Line2D對象沿x軸和y軸進(jìn)行縮放，可以使用以下代碼：

import java.awt.geom.Line2D;

public class Main {
    public static void main(String[] args) {
        Line2D line = new Line2D.Double(1, 2, 3, 4);

        // 縮放因子
        double scaleX = 2;
        double scaleY = 0.5;

        // 計(jì)算新的起點(diǎn)和終點(diǎn)
        double newStartX = line.getX1() * scaleX;
        double newStartY = line.getY1() * scaleY;
        double newEndX = line.getX2() * scaleX;
        double newEndY = line.getY2() * scaleY;

        // 創(chuàng)建新的Line2D對象
        Line2D newLine = new Line2D.Double(newStartX, newStartY, newEndX, newEndY);

        System.out.println("原始直線: (" + line.getX1() + ", " + line.getY1() + ") - (" + line.getX2() + ", " + line.getY2() + ")");
        System.out.println("縮放后的直線: (" + newLine.getX1() + ", " + newLine.getY1() + ") - (" + newLine.getX2() +

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