回答編集履歴
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コード追加
test
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drawImage のパラメータである各座標値をカード毎に表示してみて、カード画像内の各位置とあっているかを確認されては如何でしょうか。
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----
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106等の数値を直接指定するのではなく、画像が正しく作られている前提で、各イメージの大きさを求める風にしては如何でしょう。
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```java
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import java.awt.Graphics;
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import java.awt.Image;
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import java.awt.image.ImageObserver;
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import java.io.File;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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import javax.swing.JFrame;
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public class ConcentrationFrame extends JFrame {
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public static void main(String[] args) throws IOException {
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new ConcentrationFrame().setVisible(true);
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}
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private CardsImage cardsImage;
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public ConcentrationFrame() throws IOException {
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super("神経衰弱");
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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setBounds(10, 10, 1550, 950);
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cardsImage = new CardsImage("card52.png");
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}
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public void paint(Graphics g) {
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super.paint(g);
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for(int i=0; i<13*4+1; i++) {
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int x = (i%13) * cardsImage.getCardWidth() + 20;
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int y = (i/13) * cardsImage.getCardHeight() + 46;
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cardsImage.drawCard(g, i, x, y, this);
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}
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}
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private static class CardsImage {
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private Image img;
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private int height, width;
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public CardsImage(String filename) throws IOException {
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img = ImageIO.read(new File(filename)); //画像のロード
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width = img.getWidth(null) / 13;
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height = img.getHeight(null) / 5;
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}
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public void drawCard(Graphics g, int n, int dx, int dy, ImageObserver observer) {
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if(img == null) throw new IllegalStateException("image nothing.");
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if(n >= 13*4+1) throw new IllegalArgumentException("Number Error");
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int sx = (n % 13) * width;
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int sy = (n / 13) * height;
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g.drawImage(img, dx, dy, dx+width, dy+height, sx, sy, sx+width, sy+height, observer);
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}
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public int getCardWidth() { return width; }
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public int getCardHeight() { return height; }
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}
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}
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```
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