Class PassShift

src/main/java/field/graphics/Scene.java:668–695

    }

    public class PassShift implements Perform {
        private final Perform child;
        private int shift;

        public PassShift(int shift, Perform child) {
            this.shift = shift;
            this.child = child;
        }

        @Override
        public boolean perform(int pass) {
            return child.perform(-pass + shift);
        }

        @Override
        public int[] getPasses() {
            int[] p = child.getPasses();
            int[] p2 = new int[p.length];
            for (int i = 0; i < p.length; i++)
                p2[i] = p[i] + shift;
            return p2;
        }

        @Override
        public String toString() {
            return "<i>shift" + shift + "</i>:" + child;
        }
    }

}