Question

如何使用以下方法将矩形转换为多边形？

public void addRectangle(int xPos, int yPos, int dX, int dY)

我已经尝试过了：

/** * Converts the rectangle supplied into a polygon by making a new polygon 
and adding each of the rectangle's corners as points. */

public static Polygon RectangleToPolygon(Rectangle rect) {
   Polygon result = new Polygon(); 
   result.addPoint(rect.x, rect.y); 
   result.addPoint(rect.x + rect.width, rect.y); 
   result.addPoint(rect.x + rect.width, rect.y + rect.height); 
   result.addPoint(rect.x, rect.y + rect.height);
   return result; 
}

Answer 1

最好将构造函数与所有数据一起使用。

public static Polygon RectangleToPolygon(Rectangle rect) {
    int[] xpoints = {rect.x, rect.x + rect.width, rect.x + rect.width, rect.x}:
    int[] ypoints = {rect.y, rect.y, rect.y + rect.height, rect.y + rect.height};
    return new Polygon(xpoints, ypoints, 4); 
}

或用

代替rect的x，y，widht，height

int xPos, int yPos, int dX, int dY

使用addRectangle将矩形转换为多边形

1 个答案: