我工作的一个问题，我在那里得到一个偏色问题试图从成型铸造到区（见以前的帖子转换异常的问题 ）。 目前看来，是没有得到正确创建我的形状就是创造。 相反，所有张贴在这里我的源代码的我附上一个链接到所有的源文件在这里 。
基本上我创建形状的标准呼叫如下
YingYang shape = new YingYang();
shape = shape.moveTo(x, y);
shape = shape.scaleBy(size);
shape.setColor(getNextColor());
并Area类的调用是：
public YingYang()
{
Area mainCircle = new Area(new Ellipse2D.Double(...)
...
yingYang.add(mainCircle);
}
对moveTo电话：
public YingYang moveTo(double x, double y)
{
at.translate(x, y);
at.setToTranslation(x, y);
yingYang.transform(at);
return new YingYang(at.createTransformedShape(yingYang));
}
该ScaleBy：
public YingYang scaleBy(double scale)
{
double cx = this.getBounds2D().getCenterX();
double cy = this.getBounds2D().getCenterY();
at.translate(cx, cy);
at.setToTranslation(cx, cy);
at.scale(scale, scale);
at.translate(-cx, -cy);
return new YingYang(at.createTransformedShape(yingYang));
}
当我调用的paintComponent（）在我的拉丝面板：
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
for(YingYang s : shapes)
{
System.out.println(s.getBounds2D());
g2.setColor(s.getColor());
g2.fill(s);
}
}
print语句打印出：
java.awt.geom.Rectangle2D$Double[x=0.0,y=0.0,w=0.0,h=0.0]
我不知所措...任何想法？
它看起来像你我的两个建议合并成一个代码片段。 如果你要使用你的变量鹰扬，那么你应该实现在类的形状。 但是，如果你要扩大面积，你需要删除鹰扬变量和使用类的区域如：yingYang.add（mainCircle）; 成为加（mainCircle）; ...基本上除去了鹰扬变量的所有引用。
因此，而不是“鹰扬”变量使用的是“本”。 继承人是你鹰扬类移除了引用修改后的版本。
import java.awt.Color;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.awt.geom.PathIterator;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
public class YingYang extends Area
{
AffineTransform at = new AffineTransform();
private boolean movingRight = true;
private boolean movingUp = true;
private Color color = Color.BLACK;
private int dx = 10, dy = 10;
public YingYang(Shape shape)
{
super(shape);
}
public YingYang()
{
// Construct the Outer Circle & Lower Dot
Area mainCircle = new Area(new Ellipse2D.Double(-210, -210, 420, 420));
Area lowerDot = new Area(new Ellipse2D.Double(-10, 90, 40, 40));
mainCircle.subtract(lowerDot);
// Begin Construction of the whit side of symbol
Area whiteSide = new Area(new Ellipse2D.Double(-200, -200, 400, 400));
Area rect = new Area(new Rectangle2D.Double(0, -200, 200, 400));
whiteSide.subtract(rect);
// Construct the upper white Circle
Area upperCircle = new Area(new Ellipse2D.Double(-100, -200, 200, 200));
whiteSide.add(upperCircle);
// Construct the Upper Dot
Area upperDot = new Area(new Ellipse2D.Double(-10, -110, 40, 40));
whiteSide.subtract(upperDot);
// Remove the lower circle portion
Area lowerCircle = new Area(new Ellipse2D.Double(-100, 0, 200, 200));
whiteSide.subtract(lowerCircle);
// Add Main Circle
add(mainCircle);
// Subtract the white side
subtract(whiteSide);
}
//------------------------ Methods -----------------------------------------
/**
* Sets this shapes color
* (must call getColor before drawing this shape)
* @param color
*/
public void setColor(Color color)
{
this.color = color;
}
/**
* Gets this shapes current color
* @return color
*/
public Color getColor()
{
return this.color;
}
/**
* Determines if the shape is moving left to right
* @return - boolean
*/
public boolean isMovingRight()
{
return movingRight;
}
/**
* Determines if the shape is moving from down to up
* @return - boolean
*/
public boolean isMovingUp()
{
return movingUp;
}
/**
* Changes the Horizontal Path that this shape is traveling
*/
public void changeHorizonalMovement()
{
if(isMovingRight())
{
movingRight = false;
}
else
{
movingRight = true;
}
}
/**
* Changes the Vertical Path that this shape is traveling
*/
public void changeVerticalMovement()
{
if(isMovingUp())
{
movingUp = false;
}
else
{
movingUp = true;
}
}
/**
* Sets the direction of the Horizontal Path of this shape
* true = left to right : false = right to left
* @param dir - boolean
*/
public void setHorizonalMovement(boolean dir)
{
this.movingRight = dir;
}
/**
* Sets the direction of the Vertical Path of this shape
* true = down to up : false = up to down
* @param dir - boolean
*/
public void setVerticalMovement(boolean dir){
this.movingUp = dir;
}
/**
* Moves the current shape by the amount x,y
* @param x - double
* @param y - double
*/
public YingYang moveTo(double x, double y)
{
at.translate(x, y);
at.setToTranslation(x, y);
transform(at);
return new YingYang(at.createTransformedShape(this));
}
/**
* Rotate this shape
* @param theta - amount to rotate shape by
* @return
*/
public YingYang rotate(double theta)
{
double cx = getBounds2D().getCenterX();
double cy = getBounds2D().getCenterY();
at.translate(cx, cy);
at.setToTranslation(cx, cy);
at.rotate(Math.toRadians(theta));
at.translate(-cx, -cy);
return new YingYang(at.createTransformedShape(this));
}
public YingYang moveToAndRotate(double x, double y, double theta)
{
double cx = getBounds2D().getCenterX();
double cy = getBounds2D().getCenterY();
at.translate(cx, cy);
at.setToTranslation(cx, cy);
at.translate(x, y);
at.rotate(Math.toRadians(theta));
at.translate(-cx, -cy);
return new YingYang(at.createTransformedShape(this));
}
/**
* Scales this shape uniformly by the amount of scale
* about the origin
* @param scale - double
*/
public YingYang scaleBy(double scale)
{
double cx = this.getBounds2D().getCenterX();
double cy = this.getBounds2D().getCenterY();
at.translate(cx, cy);
at.setToTranslation(cx, cy);
at.scale(scale, scale);
at.translate(-cx, -cy);
return new YingYang(at.createTransformedShape(this));
}
/**
* Rotates this shape theta degrees about the origin
*/
public YingYang rotate(Double theta)
{
double cx = this.getBounds2D().getCenterX();
double cy = this.getBounds2D().getCenterY();
at.translate(cx, cy);
at.setToTranslation(cx, cy);
at.rotate(Math.toRadians(theta));
at.translate(-cx, -cy);
return new YingYang(at.createTransformedShape(this));
}
public int getDx()
{
return this.dx;
}
public void setDx(int x)
{
this.dx = x;
}
public int getDy()
{
return this.dy;
}
public void setDy(int y)
{
this.dy = y;
}
}
