我的 GUI 中的原点偏离了大约 25/26 像素-Java问题

The point of origin in my GUI is off by about 25/26 pixels(我的 GUI 中的原点偏离了大约 25/26 像素)

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问题描述

我的 GUI 上的原点 (0,0) 向上移动了大约 25/26 像素.所以我的 GUI 的左上角似乎代表 0,25 或 0,26.我正在使用双缓冲区来绘制东西.基本上，每当我尝试在缓冲区中的 0,0 处绘制一些东西时，它就会出现在屏幕外.

My point of origin (0,0) on my GUI is moved up by about 25/26 pixels. So the very top-left corner of my GUI seems to represent 0,25 or 0,26. I am using a double buffer to draw in things. Basically, whenever I try to draw something in my buffer at 0,0, it appears off-screen.

例如，下面是我尝试生成的棋盘图案的屏幕截图，从 0,0 开始.虽然水平看起来不错，但请注意顶部的切碎棋盘.高度是 480，记住它可以被 32 整除，所以棋盘格图案应该完美填充.

For example, below is a screenshot of a checkerboard pattern I attempted to generate, starting from 0,0. Although it seems fine horizontally, notice the chopped checkerboard at the top. The height is 480, which is divisible by 32 keep in mind, so the checkerboard pattern should fill in perfectly.

这是我的代码(剪断无关部分):

And here is my code (Snipped in irrelevant parts):

public class Dekari_gameGUI extends JFrame implements KeyListener {
// Resources
private final String imagePath = "Resources/Images/";
private final String spriteSheetPath = imagePath + "Sprite Sheets/";
private final String soundPath = "Resources/Sounds/";
private final String dataPath = "Resources/Data/";
private BufferedImage[][] sprites;
private Timer playerMovementTimer = new Timer();
//Game variables
private int pX = 0, pY = 0;
private short pDir = -1, pLastDir = 0, pAniStage = 0, counter = 0;
//Graphics and paint variables
private Graphics buffer;
private Image offscreen;
private Dimension dim;
//Internal variables, used for loops and placeholders
private int a, b, c, d;

/*
  ____                _                   _             
 / ___|___  _ __  ___| |_ _ __ _   _  ___| |_ ___  _ __ 
| |   / _ | '_ / __| __| '__| | | |/ __| __/ _ | '__|
| |__| (_) | | | \__  |_| |  | |_| | (__| || (_) | |   
 \____\___/|_| |_|___/\__|_|   \__,_|\___|\__\___/|_|   
 */
public Dekari_gameGUI() {
    // Declaring GUI setup
    setResizable(false);
    setTitle("Dekari RPG Indev v1.0");
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    pack();
    setSize(640, 480);
    setBackground(Color.GREEN);
    setLocationRelativeTo(null); //Centers the window

    splitSpriteSheets(); //Sets up resources

    dim = getSize();
    offscreen = createImage(dim.width, dim.height);
    buffer = offscreen.getGraphics();

    *snip*

    setVisible(true);
}

*snip*

/*
 ____       _       _   
|  _  __ _(_)_ __ | |_ 
| |_) / _` | | '_ | __|
|  __/ (_| | | | | | |_ 
|_|   \__,_|_|_| |_|\__|
 */
public void paint(Graphics g) {
    //Clears the buffer
    buffer.clearRect(0, 0, dim.width, dim.width);
    //Drawing images to the buffer
    buffer.setColor(Color.BLACK);
    boolean paint = true;
    //This is my checkerboard drawing function
    for (a = 0; a < getWidth() / 32; a++) {
        for (b = 0; b < getHeight() / 32; b++) {
            if (paint) {
                paint = false;
                buffer.fillRect(a * 32, b * 32, 32, 32);
            } else {
                paint = true;
            }
        }
    }
    if (pDir == -1) //If the player is not moving
        //Draws player in an idle stance facing last moved direction
        buffer.drawImage(sprites[0][4 * pLastDir], pX - 24, pY - 32, this);
    else //If the player is moving
        //Draws player in a movement state facing the current direction
        buffer.drawImage(sprites[0][pAniStage + (4 * pLastDir)], pX - 24, pY - 32, this);

    //Drawing the buffer to the frame
    g.drawImage(offscreen, 0, 0, this);
}

public void update(Graphics g) {
    paint(g);
}
}

我的 GUI 中的原点偏离了大约 25/26 像素

问题描述

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