Class Transient

src/main/java/field/graphics/Scene.java:541–601

    }

    static public class Transient implements Perform {
        int[] passes;
        Consumer<Integer> call;
        LinkedHashSet<GraphicsContext> allContexts = new LinkedHashSet<>(GraphicsContext.allGraphicsContexts);
        boolean onceOnly = false;

        public Transient(Perform p) {
            this.passes = p.getPasses();
            this.call = (x) -> p.perform(x);
        }

        public Transient(Runnable p, int... passes) {
            this.passes = passes;
            this.call = (x) -> p.run();
        }

        public Transient(Consumer<Integer> m, int... passes) {
            this.passes = passes;
            this.call = (x) -> m.accept(x);
        }

        /**
         * by default this transient will wait until it has run once in all contexts. Set this to change make this transient execute only once in the first context that happens to execute it
         */
        public Transient setOnceOnly() {
            onceOnly = true;
            return this;
        }

        /**
         * by default this transient will wait until it has run once in all contexts. Use this method to limit this to just some of the graphics contexts
         */
        public Transient setAllContexts(Collection<GraphicsContext> c) {
            allContexts.clear();
            allContexts.addAll(c);
            return this;
        }

        /**
         * by default this transient will wait until it has run once in all contexts. Use this method to limit this to just some of the graphics contexts where object 'o' has state stored
         */
        public Transient setAllContextsFor(Object o) {
            allContexts.clear();
            GraphicsContext.allGraphicsContexts.stream().filter(x -> x.context.containsKey(o)).forEach(x -> allContexts.add(x));
            return this;
        }

        @Override
        public boolean perform(int pass) {
//			System.out.println(" perform for transient ?? "+this);
            if (allContexts.remove(GraphicsContext.getContext())) call.accept(pass);

            return !onceOnly && allContexts.size() > 0;
        }

        @Override
        public int[] getPasses() {
            return passes;