07/05/27 01:20:03
>>79
よく知らんがGraphics2DじゃないGraphicsって組み込み用VMとか？
public class LineTest extends javax.swing.JComponent {
private void drawLine(java.awt.Graphics g, int x1, int y1, int x2, int y2, int width) {
double x = x2 - x1, y = y2 - y1, d = 2 * Math.hypot(x, y) / width;
int xx = (int)(x / d), yy = (int)(y / d);
java.awt.Polygon polygon = new java.awt.Polygon();
polygon.addPoint(x1-yy, y1+xx);
polygon.addPoint(x1+yy, y1-xx);
polygon.addPoint(x2+yy, y2-xx);
polygon.addPoint(x2-yy, y2+xx);
g.fillPolygon(polygon);
g.drawPolygon(polygon);
}
public static void main(String[] args) {
javax.swing.JFrame f = new javax.swing.JFrame();
f.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
f.add(new LineTest());
f.setSize(250, 250);
f.setVisible(true);
}
protected void paintComponent(java.awt.Graphics g) {
for (int i = 60; i <= 180; i += 20) {
drawLine(g, 240 - i, 180, i, 60, (i-40)/15);
drawLine(g, 60, i, 180, 240 - i, (i-40)/15);
}
}
}