public synchronized void draw() {
gw.clear(1, 1, 1);
gw.setColor(0, 0, 0);
gw.setupForDrawing();
gw.setCoordinateSystemToWorldSpaceUnits();
gw.enableAlphaBlending();
drawing.draw(gw);
gw.setCoordinateSystemToPixels();
for (int j = 0; j < Constant.NUM_USERS; ++j) {
userContexts[j].draw(gw);
}
// Draw some text to indicate the number of fingers touching the user interface.
// This is useful for debugging.
int totalNumCursors = 0;
String s = "[";
for (int j = 0; j < Constant.NUM_USERS; ++j) {
totalNumCursors += userContexts[j].getNumCursors();
s += (j == 0 ? "" : "+") + userContexts[j].getNumCursors();
}
s += " contacts]";
if (totalNumCursors > 0) {
gw.setColor(0, 0, 0);
gw.setFontHeight(Constant.TEXT_HEIGHT);
gw.drawString(Constant.TEXT_HEIGHT, 2 * Constant.TEXT_HEIGHT, s);
}
}
