Example usage for com.badlogic.gdx.physics.box2d Shape getType

Introduction

In this page you can find the example usage for com.badlogic.gdx.physics.box2d Shape getType.

Prototype

public abstract Type getType();

Source Link

Document

Get the type of this shape.

Usage

From source file:com.indignado.games.smariano.utils.dermetfan.box2d.Box2DUtils.java

License:Apache License

/** @return the vertices of the given Shape */
public static Vector2[] vertices(Shape shape, Vector2[] output) {
    if (shapeCache.containsKey(shape))
        return output = shapeCache.get(shape).vertices;
    else {/* w  ww .j a  va  2s . c o m*/
        switch (shape.getType()) {
        case Polygon:
            PolygonShape polygonShape = (PolygonShape) shape;

            output = new Vector2[polygonShape.getVertexCount()];

            for (int i = 0; i < output.length; i++) {
                output[i] = new Vector2();
                polygonShape.getVertex(i, output[i]);
            }
            break;
        case Edge:
            EdgeShape edgeShape = (EdgeShape) shape;

            edgeShape.getVertex1(tmpVec);
            edgeShape.getVertex2(tmpVec2);

            output = new Vector2[] { tmpVec, tmpVec2 };
            break;
        case Chain:
            ChainShape chainShape = (ChainShape) shape;

            output = new Vector2[chainShape.getVertexCount()];

            for (int i = 0; i < output.length; i++) {
                output[i] = new Vector2();
                chainShape.getVertex(i, output[i]);
            }
            break;
        case Circle:
            CircleShape circleShape = (CircleShape) shape;

            output = new Vector2[] {
                    new Vector2(circleShape.getPosition().x - circleShape.getRadius(),
                            circleShape.getPosition().y + circleShape.getRadius()), // top left
                    new Vector2(circleShape.getPosition().x - circleShape.getRadius(),
                            circleShape.getPosition().y - circleShape.getRadius()), // bottom left
                    new Vector2(circleShape.getPosition().x + circleShape.getRadius(),
                            circleShape.getPosition().y - circleShape.getRadius()), // bottom right
                    new Vector2(circleShape.getPosition().x + circleShape.getRadius(),
                            circleShape.getPosition().y + circleShape.getRadius()) // top right
            };
            break;
        default:
            throw new IllegalArgumentException(
                    "Shapes of the type '" + shape.getType().name() + "' are not supported");
        }

        if (autoShapeCache && shapeCache.size < autoShapeCacheMaxSize) {
            Vector2[] cachedOutput = new Vector2[output.length];
            System.arraycopy(output, 0, cachedOutput, 0, output.length);
            shapeCache.put(shape, new ShapeCache(cachedOutput, amplitude(filterX(cachedOutput)),
                    amplitude(filterY(cachedOutput)), min(filterX(cachedOutput)), max(filterX(cachedOutput)),
                    min(filterY(cachedOutput)), max(filterY(cachedOutput))));
        }

        return output;
    }
}

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From source file:com.indignado.games.smariano.utils.dermetfan.box2d.Box2DUtils.java

License:Apache License

/** @see #size(com.badlogic.gdx.physics.box2d.Shape) */
public static Vector2 size(Shape shape, Vector2 output) {
    if (shape.getType() == Type.Circle) // no call to #vertices(Shape) for performance
        return output.set(shape.getRadius() * 2, shape.getRadius() * 2);
    else if (shapeCache.containsKey(shape))
        return output.set(shapeCache.get(shape).width, shapeCache.get(shape).height);
    return output.set(width(shape), height(shape));
}

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From source file:com.stercore.code.net.dermetfan.utils.libgdx.box2d.Box2DUtils.java

License:Apache License

/** @param shape the Shape which vertices to get (for circles, the bounding box vertices will be returned)
 *  @return the vertices of the given Shape*/
private static Vector2[] vertices0(Shape shape) {
    Vector2[] vertices;/*from   www. j a va2  s. co m*/
    switch (shape.getType()) {
    case Polygon:
        PolygonShape polygonShape = (PolygonShape) shape;
        vertices = new Vector2[polygonShape.getVertexCount()];
        for (int i = 0; i < vertices.length; i++) {
            vertices[i] = new Vector2();
            polygonShape.getVertex(i, vertices[i]);
        }
        break;
    case Edge:
        EdgeShape edgeShape = (EdgeShape) shape;
        edgeShape.getVertex1(vec2_0);
        edgeShape.getVertex2(vec2_1);
        vertices = new Vector2[] { new Vector2(vec2_0), new Vector2(vec2_1) };
        break;
    case Chain:
        ChainShape chainShape = (ChainShape) shape;
        vertices = new Vector2[chainShape.getVertexCount()];
        for (int i = 0; i < vertices.length; i++) {
            vertices[i] = new Vector2();
            chainShape.getVertex(i, vertices[i]);
        }
        break;
    case Circle:
        CircleShape circleShape = (CircleShape) shape;
        Vector2 position = circleShape.getPosition();
        float radius = circleShape.getRadius();
        vertices = new Vector2[4];
        vertices[0] = new Vector2(position.x - radius, position.y + radius); // top left
        vertices[1] = new Vector2(position.x - radius, position.y - radius); // bottom left
        vertices[2] = new Vector2(position.x + radius, position.y - radius); // bottom right
        vertices[3] = new Vector2(position.x + radius, position.y + radius); // top right
        break;
    default:
        throw new IllegalArgumentException(
                "shapes of the type '" + shape.getType().name() + "' are not supported");
    }
    return vertices;
}

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From source file:com.stercore.code.net.dermetfan.utils.libgdx.box2d.Box2DUtils.java

License:Apache License

/** @return the width of the given Shape */
private static float width0(Shape shape) {
    if (shape.getType() == Type.Circle)
        return shape.getRadius() * 2;
    return amplitude(filterX(vertices0(shape)));
}

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From source file:com.stercore.code.net.dermetfan.utils.libgdx.box2d.Box2DUtils.java

License:Apache License

/** @return the height of the given Shape */
private static float height0(Shape shape) {
    if (shape.getType() == Type.Circle)
        return shape.getRadius() * 2;
    return amplitude(filterY(vertices0(shape)));
}

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From source file:net.dermetfan.utils.libgdx.box2d.Box2DUtils.java

License:Apache License

/** {@link #vertices(Shape)} without caching */
private static Vector2[] vertices0(Shape shape, Vector2[] output) {
    switch (shape.getType()) {
    case Polygon:
        PolygonShape polygonShape = (PolygonShape) shape;

        if (output == null || output.length != polygonShape.getVertexCount())
            output = new Vector2[polygonShape.getVertexCount()];

        for (int i = 0; i < output.length; i++) {
            if (output[i] == null)
                output[i] = new Vector2();
            polygonShape.getVertex(i, output[i]);
        }/* w w w.j a  v  a 2s.c  o m*/
        break;
    case Edge:
        EdgeShape edgeShape = (EdgeShape) shape;

        edgeShape.getVertex1(vec2_0);
        edgeShape.getVertex2(vec2_1);

        if (output == null || output.length != 2)
            output = new Vector2[] { vec2_0, vec2_1 };
        else {
            if (output[0] == null)
                output[0] = new Vector2(vec2_0);
            else
                output[0].set(vec2_0);
            if (output[1] == null)
                output[1] = new Vector2(vec2_1);
            else
                output[1].set(vec2_1);
        }
        break;
    case Chain:
        ChainShape chainShape = (ChainShape) shape;

        if (output == null || output.length != chainShape.getVertexCount())
            output = new Vector2[chainShape.getVertexCount()];

        for (int i = 0; i < output.length; i++) {
            if (output[i] == null)
                output[i] = new Vector2();
            chainShape.getVertex(i, output[i]);
        }
        break;
    case Circle:
        CircleShape circleShape = (CircleShape) shape;

        if (output == null || output.length != 4)
            output = new Vector2[4];
        vec2_0.set(circleShape.getPosition().x - circleShape.getRadius(),
                circleShape.getPosition().y + circleShape.getRadius()); // top left
        output[0] = output[0] != null ? output[0].set(vec2_0) : new Vector2(vec2_0);
        vec2_0.set(circleShape.getPosition().x - circleShape.getRadius(),
                circleShape.getPosition().y - circleShape.getRadius()); // bottom left
        output[1] = output[1] != null ? output[1].set(vec2_0) : new Vector2(vec2_0);
        vec2_0.set(circleShape.getPosition().x + circleShape.getRadius(),
                circleShape.getPosition().y - circleShape.getRadius()); // bottom right
        output[2] = output[2] != null ? output[2].set(vec2_0) : new Vector2(vec2_0);
        vec2_0.set(circleShape.getPosition().x + circleShape.getRadius(),
                circleShape.getPosition().y + circleShape.getRadius()); // top right
        output[3] = output[3] != null ? output[3].set(vec2_0) : new Vector2(vec2_0);
        break;
    default:
        throw new IllegalArgumentException(
                "Shapes of the type '" + shape.getType().name() + "' are not supported");
    }
    return output;
}

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From source file:net.dermetfan.utils.libgdx.box2d.Box2DUtils.java

License:Apache License

/** @see #size(Shape) */
public static Vector2 size(Shape shape, Vector2 output) {
    if (shape.getType() == Type.Circle) // no call to #vertices(Shape) for performance
        return output.set(shape.getRadius() * 2, shape.getRadius() * 2);
    else if (cache.containsKey(shape))
        return output.set(cache.get(shape).width, cache.get(shape).height);
    return output.set(width(shape), height(shape));
}

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From source file:net.dermetfan.utils.libgdx.box2d.Box2DUtils.java

License:Apache License

/** creates a deep copy of a {@link Shape}<br/>
 *  <strong>Note: The {@link ChainShape#setPrevVertex(float, float) previous} and {@link ChainShape#setNextVertex(float, float) next} vertex of a {@link ChainShape} will not be copied since this is not possible due to the API.</strong>
 *  @param shape the {@link Shape} to copy
 *  @return a {@link Shape} exactly like the one passed in */
public static Shape copy(Shape shape) {
    Shape copy;//  ww w  .j  a v  a2 s. c o  m
    switch (shape.getType()) {
    case Circle:
        CircleShape circleCopy = (CircleShape) (copy = new CircleShape());
        circleCopy.setPosition(((CircleShape) shape).getPosition());
        break;
    case Polygon:
        PolygonShape polyCopy = (PolygonShape) (copy = new PolygonShape()), poly = (PolygonShape) shape;
        float[] vertices = new float[poly.getVertexCount()];
        for (int i = 0; i < vertices.length; i++) {
            poly.getVertex(i, vec2_0);
            vertices[i++] = vec2_0.x;
            vertices[i] = vec2_0.y;
        }
        polyCopy.set(vertices);
        break;
    case Edge:
        EdgeShape edgeCopy = (EdgeShape) (copy = new EdgeShape()), edge = (EdgeShape) shape;
        edge.getVertex1(vec2_0);
        edge.getVertex2(vec2_1);
        edgeCopy.set(vec2_0, vec2_1);
        break;
    case Chain:
        ChainShape chainCopy = (ChainShape) (copy = new ChainShape()), chain = (ChainShape) shape;
        vertices = new float[chain.getVertexCount()];
        for (int i = 0; i < vertices.length; i++) {
            chain.getVertex(i, vec2_0);
            vertices[i++] = vec2_0.x;
            vertices[i] = vec2_0.y;
        }
        if (chain.isLooped())
            chainCopy.createLoop(GeometryUtils.toVector2Array(vertices));
        else
            chainCopy.createChain(vertices);
        break;
    default:
        return shape;
    }
    copy.setRadius(shape.getRadius());
    return copy;
}

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