Example usage for com.badlogic.gdx.scenes.scene2d Group localToDescendantCoordinates

Introduction

In this page you can find the example usage for com.badlogic.gdx.scenes.scene2d Group localToDescendantCoordinates.

Prototype

public Vector2 localToDescendantCoordinates(Actor descendant, Vector2 localCoords) 

Source Link

Document

Converts coordinates for this group to those of a descendant actor.

Usage

From source file:com.blastedstudios.gdxworld.util.ui.Scene2DUtils.java

License:Apache License

/** @param vec the coordinates
 *  @param actor the actor in which coordinate system vec is given
 *  @param other the actor into which coordinate system to convert the coordinates to
 *  @throws IllegalArgumentException if the given actors are not in the same hierarchy */
public static void localToOtherCoordinates(Vector2 vec, Actor actor, Actor other) {
    Group lastParent = lastParent(actor);
    if (lastParent == null || lastParent != lastParent(other))
        throw new IllegalArgumentException(actor + " and " + other + " are not in the same hierarchy");
    actor.localToAscendantCoordinates(lastParent, vec);
    lastParent.localToDescendantCoordinates(other, vec);
}

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From source file:com.netthreads.libgdx.scene.SceneHelper.java

License:Apache License

/**
 * Find hit class.//from   w  ww.ja v  a 2 s  . c  om
 *
 * @param x           Current x position.
 * @param y           Current y position
 * @param group       The starting Group.
 * @param targetClass The target class type.
 * @return The target or null if not found.
 */
@SuppressWarnings("rawtypes")
public static Actor hit(float x, float y, Group group, Class targetClass) {
    SnapshotArray<Actor> children = group.getChildren();

    Actor hit = null;
    boolean found = false;
    int index = children.size - 1;
    while (!found && index >= 0) {
        Actor child = children.get(index);

        if (child.getClass().isAssignableFrom(targetClass)) {
            point.x = x;
            point.y = y;

            group.localToDescendantCoordinates(child, point);

            if (child.hit(point.x, point.y, true) != null) {
                found = true;
                hit = child;
            } else if (child instanceof Group) {
                child = hit(x, y, (Group) child, targetClass);
            }
        }

        index--;
    }

    return hit;
}

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From source file:com.netthreads.libgdx.scene.SceneHelper.java

License:Apache License

/**
 * Look for intersection between two actors.
 * <p/>//w w w  .ja v a  2s.  c  o  m
 * I have defined this here as I can't extend the base classes Actor and Group.
 *
 * @param x           The x pos rectangle.
 * @param y           The y pos rectangle.
 * @param width       The rectangle width.
 * @param height      The rectangle height.
 * @param group       The group.
 * @param targetClass The target class.
 * @return Target class, null if no intersection.
 */
@SuppressWarnings("rawtypes")
public static Actor intersects(float x, float y, float width, float height, Group group, Class targetClass) {
    SnapshotArray<Actor> children = group.getChildren();

    Actor hit = null;
    int index = children.size - 1;
    while (hit == null && index >= 0) {
        Actor child = children.get(index);

        point.x = x;
        point.y = y;

        group.localToDescendantCoordinates(child, point);

        // If child is our target class then immediately check for
        // intersection
        if (child.getClass().equals(targetClass)) {
            if (isIntersect(point.x, point.y, width, height, 0, 0, child.getWidth(), child.getHeight())) {
                hit = child;
            }
        } else if (child instanceof Group) {
            hit = intersects(point.x, point.y, width, height, (Group) child, targetClass);
        }

        index--;
    }

    return hit;
}

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From source file:com.netthreads.libgdx.scene.SceneHelper.java

License:Apache License

/**
 * Look for target hit of specified class.
 *
 * @param x           Current x position.
 * @param y           Current y position
 * @param stage       The starting stage.
 * @param targetClass The target class type.
 * @return Target class or null if not found.
 *//*  w  ww.  ja  va 2  s  .  co m*/
@SuppressWarnings("rawtypes")
public static Actor hit(float x, float y, Stage stage, Class targetClass) {
    Group root = stage.getRoot();

    SnapshotArray<Actor> children = root.getChildren();

    Actor hit = null;
    boolean found = false;
    int index = children.size - 1;
    while (!found && index >= 0) {
        Actor child = children.get(index);

        point.x = x;
        point.y = y;

        root.localToDescendantCoordinates(child, point);

        Actor childHit = root.hit(point.x, point.y, true);

        if (childHit != null && childHit.getClass().isAssignableFrom(targetClass)) {
            found = true;
            hit = childHit;
        } else {
            index--;
        }
    }

    return hit;
}

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From source file:com.stercore.code.net.dermetfan.utils.libgdx.scene2d.Scene2DUtils.java

License:Apache License

/** @param pos the coordinates
 *  @param actor the actor in which coordinate system pos is given
 *  @param other the actor into which coordinate system to convert the coordinates to
 *  @return the given position, converted
 *  @throws IllegalArgumentException if the given actors are not in the same hierarchy */
public static Vector2 localToOtherCoordinates(Vector2 pos, Actor actor, Actor other) {
    Group lastParent = lastParent(actor);
    if (lastParent == null || lastParent != lastParent(other))
        throw new IllegalArgumentException(actor + " and " + other + " are not in the same hierarchy");
    actor.localToAscendantCoordinates(lastParent, pos);
    lastParent.localToDescendantCoordinates(other, pos);
    return pos;/* www. j a  v  a2s. c o m*/
}

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