public void init(Controller c) {
super.init(c);
// Make the Display3D. We'll have it display stuff later.
display = new Display3D(600, 600, this);
// attach the portrayals to the displayer, from bottom to top
display.attach(heatPortrayal, "Heat");
display.attach(bugPortrayal, "Bugs");
heatPortrayal.setValueName("Heat");
HeatBugs hbState = (HeatBugs) state;
// center the bug graph. Right now it's located at the (0,0) position. For
// example, if it's a 5x5 graph, and the origin is at (0,0), we want to move it
// to (2,2). So we want it to be at ( (5-1)/2 = 2, (5-1/2) = 2 ). Similarly,
// if it's a 6x6 graph we want the origin to be at (2.5, 2.5), dead center between
// the (2,2) and (3,3) grid positions. To center
// the origin there, we need to move the graph in the opposite direction.
// so the general equation for each dimension: (numGridPoints - 1) / -2.0.
display.translate((hbState.gridWidth - 1) / -2.0, (hbState.gridHeight - 1) / -2.0, 0);
// now let's scale it so it fits inside a 1x1x1 cube centered at the origin. We don't
// have to, but it'll look nicer.
display.scale(1.0 / Math.max(hbState.gridWidth, hbState.gridHeight));
displayFrame = display.createFrame();
c.registerFrame(displayFrame); // register the frame so it appears in the "Display" list
displayFrame.setVisible(true);
}
