* possible de fermer la fenêtre via le gestionnaire de fenêtres.
*
* @author Arnaud Giersch <arnaud.giersch@univ-fcomte.fr>
- * @version 20141021a
+ * @version 20141021b
*/
public class DrawingWindow {
* @see #setBgColor(int)
*/
public int getPointColor(int x, int y) {
- return image.getRGB(x, y);
+ return (x < 0 || y < 0 || x >= width || y >= height) ?
+ 0 : image.getRGB(x, y) & 0x00ffffff;
}
/**
class Test{
public static void main(String[] args) {
- DrawingWindow w1 = new DrawingWindow("Test!", 400, 400);
+ DrawingWindow w1 = new DrawingWindow("Test!", 400, 300);
w1.setColor("lawngreen");
for (int i = 0; i < 12; i++) {
w1.drawLine(-10, w1.height - 10, w1.width + 10, w1.height - 10);
w1.drawLine(w1.width - 10, -10, w1.width - 10, w1.height + 10);
w1.setColor("red");
- for (int x = -10; x <= w1.width + 10; x++)
- w1.drawPoint(x, w1.height - 20);
- for (int y = -10; y <= w1.height + 10; y++)
- w1.drawPoint(w1.width - 20, y);
+ for (int x = -10; x <= w1.width + 10; x++) {
+ int y = w1.height - 20;
+ w1.drawPoint(x, y);
+ int c = w1.getPointColor(x, y);
+ if (c != (x < 0 || x >= w1.width ? 0 : 0x00ff0000))
+ throw new AssertionError("Error with getPointColor(): " +
+ "(" + x + ", " + y + "): " +
+ String.format("%#010x", c));
+ }
+ for (int y = -10; y <= w1.height + 10; y++) {
+ int x = w1.width - 20;
+ w1.drawPoint(x, y);
+ w1.getPointColor(x, y);
+ int c = w1.getPointColor(x, y);
+ if (c != (y < 0 || y >= w1.height ? 0 : 0x00ff0000))
+ throw new AssertionError("Error with getPointColor(): " +
+ "(" + x + ", " + y + "): " +
+ String.format("%#010x", c));
+ }
DrawingWindow w2 = new DrawingWindow("Test!", 800, 600);
w2.setBgColor("red");