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/*
* 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
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebXRView.h"
#if ENABLE(WEBXR)
#include "WebXRFrame.h"
#include "WebXRRigidTransform.h"
#include <JavaScriptCore/TypedArrayInlines.h>
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
// Arbitrary value for minimum viewport scaling.
// Below this threshold the resulting viewport would be too pixelated.
static constexpr double kMinViewportScale = 0.1;
WTF_MAKE_ISO_ALLOCATED_IMPL(WebXRView);
Ref<WebXRView> WebXRView::create(Ref<WebXRFrame>&& frame, XREye eye, Ref<WebXRRigidTransform>&& transform, Ref<Float32Array>&& projection)
{
return adoptRef(*new WebXRView(WTFMove(frame), eye, WTFMove(transform), WTFMove(projection)));
}
WebXRView::WebXRView(Ref<WebXRFrame>&& frame, XREye eye, Ref<WebXRRigidTransform>&& transform, Ref<Float32Array>&& projection)
: m_frame(WTFMove(frame))
, m_eye(eye)
, m_transform(WTFMove(transform))
, m_projection(WTFMove(projection))
{
}
WebXRView::~WebXRView() = default;
// https://immersive-web.github.io/webxr/#dom-xrview-recommendedviewportscale
std::optional<double> WebXRView::recommendedViewportScale() const
{
// Return null if the system does not implement a heuristic or method for determining a recommended scale.
return std::nullopt;
}
// https://immersive-web.github.io/webxr/#dom-xrview-requestviewportscale
void WebXRView::requestViewportScale(std::optional<double> value)
{
if (!value || *value <= 0.0)
return;
m_requestedViewportScale = std::clamp(*value, kMinViewportScale, 1.0);
}
} // namespace WebCore
#endif // ENABLE(WEBXR)
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