我正在尝试绘制一个带有程式化边缘的矩形，但不幸的是边缘仅覆盖左侧和顶部。
public Graphics2D Draw(Graphics2D b, long cameraX, long cameraY) {
//let's do the drawing stuff, yay
renderImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = renderImage.createGraphics();
int[] xPs= new int[pointsarray.length];
int[] yPs= new int[pointsarray.length];
int i=0;
for (Pair p:pointsarray){
xPs[i]=p.pair[0];
yPs[i]=p.pair[1];
i++;
}
g.setColor(color);
g.fillPolygon(xPs, yPs, xPs.length);
g.setColor(color.darker());
g.drawPolygon(xPs, yPs, xPs.length);
b = super.Draw(b, cameraX, cameraY);
return b;
}
是的，它是一个多边形。我必须保持这个可扩展的。
编辑：这就是 pointsarray 现在的样子。
pointsarray = new Pair[4];
pointsarray[0] = new Pair(0,0);
pointsarray[1] = new Pair(0,height);
pointsarray[2] = new Pair(width,height);
pointsarray[3] = new Pair(width,0);
渲染方法：（这被第一种方法覆盖）（我也承认 -renderImage.getWidth()/2 部分是错误的）
public Graphics2D Draw(Graphics2D b ,long cameraX, long cameraY) {
AffineTransform t = AffineTransform.getRotateInstance(r);
AffineTransformOp op = new AffineTransformOp(t,AffineTransformOp.TYPE_BILINEAR);
b.drawImage(renderImage, op, (int)(cameraX-x), (int)(cameraY-y));
return b;
}
JFrame 最终渲染：
public void paintComponent(Graphics g) {
Graphics2D r = (Graphics2D) g;
Graphics2D b = (Graphics2D) r.create(); // i herd you liek buffers
b.clearRect(0, 0, getWidth(), getHeight()); // clear the buffer
// let's draw some... stuff
long newCameraX = cameraX;
long newCameraY = cameraY;
// background
b.setColor(Color.WHITE);
b.fillRect(0, 0, getWidth(), getHeight());
b.setColor(Color.BLACK);
for (Entity entity : entities) {
entity.Draw((Graphics2D) b, cameraX + (this.getSize().width / 2),
cameraY + (this.getSize().height / 2));
}
// we're done drawing. let's put the stuff back in the first thing
r = b;
cameraX = newCameraX;
cameraY = newCameraY;
}
对类：
public class Pair {
public int[] pair = {0,0};
public Pair(int num1, int num2) {
pair[0] = num1;
pair[1] = num2;
}
//you mad?
}