java - 在模糊的位置绘制形状

Question

这是一个非常奇怪的错误，我似乎无法弄清楚。为了简化这一点，我有三个类:一个 Canvas 类(它使用 Graphics2D.draw() 绘制对象)，然后是许多 ob 家具类，它们可以被视为一个类，因为它们所做的只是返回不同的值形状。最后，我有一个 CustomShape 类，它允许我根据现有的其他形状创建一个新的形状。但这些形状是在奇怪的地方绘制的。 x 和 y 坐标与绘制形状的位置不匹配。

壁橱.java:

public class Closet {
    double x, y, width, height, rotation;
    Color color;
Closet() {
    this.x = X;
    this.y = Y;
    this.width = 40;
    this.height = 40;
    this.rotation = 0;
    this.color = Color.blue;
}

public Shape getShape() {
    GeneralPath closetShape = new GeneralPath();
    closetShape.append(new Rectangle2D.Double(0, 0, width, height), false);
    closetShape.moveTo(0 , 0);
    closetShape.lineTo(width, height);
    closetShape.moveTo(0, height);
    closetShape.lineTo(width, 0);
    // transform:

    AffineTransform t = new AffineTransform();
    t.translate(x, y);
    Rectangle2D umriss = closetShape.getBounds2D();
    t.rotate(Math.toRadians(rotation),umriss.getX()+umriss.getWidth()/2,umriss.getY()+umriss.getHeight()/2);
      return  t.createTransformedShape(closetShape);
}
}

自定义形状.java

public class CustomShape  {
double x, y, width, height, rotation;
Color color;
private Closet[] c;
CustomShape(Closet... elements) {
    this.m = elements;
    GeneralPath path = new GeneralPath();
    Closet[] newC = elements.clone();
    Arrays.stream(newC).forEach(e -> path.append(e.getShape(), false));
    this.x = path.getBounds2D().getX();
    this.y = path.getBounds2D().getY();
    this.width = path.getBounds2D().getWidth();
    this.height = path.getBounds2D().getHeight();
    this.rotation = 0;
    this.color = Color.blue;
}

public Shape getShape() {
    GeneralPath path = new GeneralPath();
    Arrays.stream(c).forEach(e -> path.append(e.getShape(), false));
    AffineTransform t = new AffineTransform();
    t.translate(x, y);
    Rectangle2D umriss = path.getBounds2D();
    t.rotate(Math.toRadians(rotation),umriss.getX()+umriss.getWidth()/2,umriss.getY()+umriss.getHeight()/2);
    return t.createTransformedShape(path);
}
}

Answer 1

我找到了解决方案:在将这些形状添加到 CustomShape 之前，我已经对其进行了转换。这就是 x 和 y 坐标错误的原因。