private static List<RenderEntity> createRenderEntityList(
List<IDrawable> drawList, Camera camera) {
List<RenderEntity> entitiesList = new ArrayList<>();
for (IDrawable obj : drawList) {
if (obj instanceof ILargeDrawable) {
Collection<Vector3> drawPositionList = ((ILargeDrawable) obj).getDrawPositionList();
for (Vector3 position : drawPositionList) {
entitiesList.add(new RenderEntity(position, obj, camera));
}
} else {
entitiesList.add(new RenderEntity(obj.getDrawPosition(), obj, camera));
}
}
return entitiesList;
}
/**
* Draw a collection of {@link IDrawable}, ordered by internal rules.
*
* @param objectCollection collection of {@link IDrawable} objects to be drawn.
* @param g a {@link Graphics2D} object.
* @param camera a {@link Camera} for drawing {@link IDrawable} onto the {@link Graphics2D}.
*/
public static void draw(Collection<IDrawable> objectCollection, Graphics2D g, Camera camera) {
List<IDrawable> drawList = createListWithUniqueItem(objectCollection);
List<RenderEntity> renderEntities = createRenderEntityList(drawList, camera);
Collections.sort(renderEntities);
// final Vector2 depthChecker = new Vector2(0, 1).rotate(camera.getRotationAngle()).multiply(1,
// 0.5f);
/*
* drawList.sort(new Comparator<IDrawable>() {
*
* @Override public int compare(IDrawable o1, IDrawable o2) { // if (o1.getDrawZ() != o2.getDrawZ()) { // return
* (o1.getDrawZ() < o2.getDrawZ()) ? -1 : 1; // } else {
*
* // float depthA = depthChecker.getX() * o1.getDrawX() + depthChecker.getY() * o1.getDrawY() + //
* o1.getDrawZ(); float depthB = depthChecker.getX() * o2.getDrawX() + depthChecker.getY() * // o2.getDrawY() +
* o2.getDrawZ();
*
* float depthA = camera.getYPosition(-o1.getDrawX(), -o1.getDrawY(), o1.getDrawZ()); float depthB =
* camera.getYPosition(-o2.getDrawX(), -o2.getDrawY(), o2.getDrawZ());
*
* return (int) Math.signum(depthB - depthA); // } } });
*/
Rectangle clipper = g.getClipBounds();
clipper =
new Rectangle(
(int) clipper.getX() - CLIPPER_PADDING,
(int) clipper.getY() - CLIPPER_PADDING,
(int) clipper.getWidth() + CLIPPER_PADDING * 2,
(int) clipper.getHeight() + CLIPPER_PADDING * 2);
for (RenderEntity renderEntity : renderEntities) {
IDrawable drawableObj = renderEntity.getDrawableObject();
if (!isOutsideClippingArea(clipper, renderEntity.getDrawPosition())) {
if (drawableObj instanceof ILargeDrawable) {
((ILargeDrawable) drawableObj).draw(g, camera, renderEntity.getPosition());
} else {
drawableObj.draw(g, camera);
}
}
}
}