Question

我正在创建一个带有许多独立小方块的电路板，我想用图像的各个部分填充方块，这样它们就可以一起形成原始图像。我怎么做？我应该研究什么课？顺便说一句，我正在使用paintComponent绘制电路板。

public void paintComponent(Graphics g) {
    super.paintComponent(g);
    int boxHeight = boxHeight();
    int boxWidth = boxWidth();
    for (int row = 0; row < game.getRows(); row++) {
        for (int col = 0; col < game.getCols(); col++) {
            g.setColor(Color.lightGray);
            g.drawRect(col * boxWidth, row * boxHeight, boxWidth, boxHeight);
//this is where I want to fill the rectangles
            if (game.isAlive(row, col)) {
                g.setColor(color);
                g.fillRect(col * boxWidth, row * boxHeight, boxWidth, boxHeight);
            } 
        }
    }
}

Answer 1

假设你有一个BufferedImage b：

public void paintComponent(Graphics g) {
    super.paintComponent(g);
    int boxHeight = boxHeight();
    int boxWidth = boxWidth();
    for (int row = 0; row < game.getRows(); row++) {
        for (int col = 0; col < game.getCols(); col++) {
            g.setColor(Color.lightGray);
            g.drawRect(col * boxWidth, row * boxHeight, boxWidth, boxHeight);
//this is where I want to fill the rectangles
            if (game.isAlive(row, col)) {
                g.setColor(color);
                g.drawImage(b.getSubimage(col * boxWidth, row * boxHeight, boxWidth, boxHeight), col * boxWidth, row * boxHeight, boxWidth, boxHeight, null);
            } 
        }
    }

假设您的图像与框的大小相同。否则你必须缩小或扩展图像：

BufferedImage b2=new BufferedImage(game.getCols()*boxWidth, game.getRows()*boxHeight, BufferedImage.TYPE_INT_RGB);
Graphics g=b2.getGraphics();
g.drawImage(b, 0, 0, b2.getWidth(), b2.getHeight(), null);

并在循环中

g.drawImage(b2.getSubimage(col * boxWidth, row * box, boxWidth, boxHeight), col * boxWidth, row * boxHeight, boxWidth, boxHeight, null);

在给定图像坐标的情况下，用图像的一部分填充矩形？

1 个答案: