Triangle.java

Go to the documentation of this file.

package com.example.graphics.model;
 
import com.example.graphics.visitor.ShapeVisitor;

public class Triangle implements Shape {
    private int x1;
    private int y1;
    private int x2;
    private int y2;
    private int x3;
    private int y3;
    
    public Triangle(int x1, int y1, int x2, int y2, int x3, int y3) {
        this.x1 = x1;
        this.y1 = y1;
        this.x2 = x2;
        this.y2 = y2;
        this.x3 = x3;
        this.y3 = y3;
    }
    
    @Override
    public int getX() {
        // 返回三角形的重心作为参考点
//        return (x1 + x2 + x3) / 3;
        return x1;
    }
    
    @Override
    public int getY() {
        // 返回三角形的重心作为参考点
//        return (y1 + y2 + y3) / 3;
        return y1;
    }
 
    
    @Override
    public void setPosition(int x, int y) {
        // 计算移动的偏移量
        int dx = x - getX();
        int dy = y - getY();
        
        // 移动所有顶点
        x1 += dx;
        y1 += dy;
        x2 += dx;
        y2 += dy;
        x3 += dx;
        y3 += dy;
    }
    
    public int getX1() {
        return x1;
    }
    
    public int getY1() {
        return y1;
    }
    
    public int getX2() {
        return x2;
    }
    
    public int getY2() {
        return y2;
    }
    
    public int getX3() {
        return x3;
    }
    
    public int getY3() {
        return y3;
    }
    
    public void setTriangle(int x1, int y1, int x2, int y2, int x3, int y3) {
        this.x1 = x1;
        this.y1 = y1;
        this.x2 = x2;
        this.y2 = y2;
        this.x3 = x3;
        this.y3 = y3;
    }
    
    @Override
    public void accept(ShapeVisitor visitor) {
        visitor.visit(this);
    }
    
    @Override
    public Shape clone() {
        return new Triangle(x1, y1, x2, y2, x3, y3);
    }
}