com.sun.javafx.util.TempState Maven / Gradle / Ivy
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package com.sun.javafx.util;
import com.sun.javafx.geom.BaseBounds;
import com.sun.javafx.geom.RectBounds;
import com.sun.javafx.geom.transform.Affine3D;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.javafx.geom.transform.GeneralTransform3D;
/**************************************************************************
* *
* Temporary state, used to reduce the occurrence of temporary garbage *
* while computing things such as bounds and transforms, and while *
* picking. Since these operations happen extremely often and must be *
* very fast, we need to reduce the load on the garbage collector. *
* *
*************************************************************************/
public final class TempState {
/**
* A temporary rect used for computing bounds by the various bounds
* variables. This bounds starts life as a RectBounds, but may be promoted
* to a BoxBounds if there is a 3D transform mixed into its computation.
*/
public BaseBounds bounds = new RectBounds(0, 0, -1, -1);
/**
* A temporary affine transform used when picking to avoid creating
* temporary garbage.
*/
public final BaseTransform pickTx = new Affine3D();
/**
* A temporary affine transform used by the path transition to avoid
* creating temporary garbage.
*/
public final Affine3D leafTx = new Affine3D();
/**
* A temporary point used for picking and other purposes.
*/
public final com.sun.javafx.geom.Point2D point =
new com.sun.javafx.geom.Point2D(0, 0);
public final com.sun.javafx.geom.Vec3d vec3d =
new com.sun.javafx.geom.Vec3d(0, 0, 0);
/**
* A temporary general transform used by LOD helper method, in node,
* to compute area in scene.
*/
public final GeneralTransform3D projViewTx = new GeneralTransform3D();
/**
* A temporary affine transform used by the LOD helper method to get an
* affine transform.
*/
public final Affine3D tempTx = new Affine3D();
private static final ThreadLocal tempStateRef =
new ThreadLocal() {
@Override
protected TempState initialValue() {
return new TempState();
}
};
private TempState() {
}
public static TempState getInstance() {
return tempStateRef.get();
}
}