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57 lines
1.0 KiB
57 lines
1.0 KiB
package mightypork.utils.math.constraints;
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import mightypork.gamecore.control.timing.Pollable;
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import mightypork.gamecore.control.timing.Poller;
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import mightypork.utils.math.rect.RectMutable;
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import mightypork.utils.math.rect.RectView;
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/**
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* {@link RectBound} cache, used for caching computed Rect from a complex
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* {@link RectBound}.<br>
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* Calculates only when polled.
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*
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* @author MightyPork
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*/
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public class RectCache implements RectBound, Pollable {
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private final RectBound observed;
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private final RectMutable cached = RectMutable.zero();
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/**
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* @param observed cached constraint
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*/
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public RectCache(RectBound observed) {
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this.observed = observed;
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poll();
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}
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/**
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* Create and join a poller
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*
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* @param poller poller to join
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* @param rc observed constraint
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*/
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public RectCache(Poller poller, RectBound rc) {
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this(rc);
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poller.add(this);
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}
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@Override
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public RectView getRect()
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{
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return cached;
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}
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@Override
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public void poll()
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{
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cached.setTo(observed.getRect());
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}
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}
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