int viewHeight = Gdx.graphics.getHeight();
debugRenderer.begin(batch.getProjectionMatrix(), GL10.GL_LINES);
for (int i = 0, n = debugRects.size; i < n; i++) {
DebugRect rect = debugRects.get(i);
float x1 = x + rect.x;
float y1 = y - rect.y - rect.height;
float x2 = x1 + rect.width;
float y2 = y1 + rect.height;
float r = (rect.type & DEBUG_CELL) != 0 ? 1 : 0;