Source/WebCore/Modules/webxr/WebXRBoundedReferenceSpace.h

/*
 * Copyright (C) 2020 Igalia S.L. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(WEBXR)

#include "WebXRReferenceSpace.h"
#include <wtf/IsoMalloc.h>
#include <wtf/Ref.h>
#include <wtf/Vector.h>

namespace WebCore {

class DOMPointReadOnly;

class WebXRBoundedReferenceSpace final : public WebXRReferenceSpace {
    WTF_MAKE_ISO_ALLOCATED(WebXRBoundedReferenceSpace);
public:
    static Ref<WebXRBoundedReferenceSpace> create(Document&, WebXRSession&, XRReferenceSpaceType);
    static Ref<WebXRBoundedReferenceSpace> create(Document&, WebXRSession&, Ref<WebXRRigidTransform>&&, XRReferenceSpaceType);

    virtual ~WebXRBoundedReferenceSpace();

    std::optional<TransformationMatrix> nativeOrigin() const final;
    const Vector<Ref<DOMPointReadOnly>>& boundsGeometry();
    ExceptionOr<Ref<WebXRReferenceSpace>> getOffsetReferenceSpace(const WebXRRigidTransform&) final;

private:
    WebXRBoundedReferenceSpace(Document&, WebXRSession&, Ref<WebXRRigidTransform>&&, XRReferenceSpaceType);

    bool isBoundedReferenceSpace() const final { return true; }

    void updateIfNeeded();
    float quantize(float);

    Vector<Ref<DOMPointReadOnly>> m_boundsGeometry;
    int m_lastUpdateId { -1 };
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::WebXRBoundedReferenceSpace)
    static bool isType(const WebCore::WebXRReferenceSpace& element) { return element.isBoundedReferenceSpace(); }
    static bool isType(const WebCore::WebXRSpace& element) { return is<WebCore::WebXRReferenceSpace>(element) && isType(downcast<WebCore::WebXRReferenceSpace>(element)); }
SPECIALIZE_TYPE_TRAITS_END()

#endif // ENABLE(WEBXR)