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/*
* Copyright (C) 2021 Apple, Inc. 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 "WebXRHand.h"
#if ENABLE(WEBXR) && ENABLE(WEBXR_HANDS)
#include "WebXRInputSource.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(WebXRHand);
Ref<WebXRHand> WebXRHand::create(const WebXRInputSource& inputSource)
{
return adoptRef(*new WebXRHand(inputSource));
}
WebXRHand::WebXRHand(const WebXRInputSource& inputSource)
: m_inputSource(inputSource)
{
RefPtr session = this->session();
RefPtr document = session ? downcast<Document>(session->scriptExecutionContext()) : nullptr;
if (!document)
return;
size_t jointCount = static_cast<size_t>(XRHandJoint::Count);
m_joints = Vector<Ref<WebXRJointSpace>>(jointCount, [&](size_t i) {
return WebXRJointSpace::create(*document, *this, static_cast<XRHandJoint>(i));
});
}
WebXRHand::~WebXRHand() = default;
RefPtr<WebXRJointSpace> WebXRHand::get(const XRHandJoint& key)
{
size_t jointIndex = static_cast<size_t>(key);
if (jointIndex >= m_joints.size())
return nullptr;
return m_joints[jointIndex].ptr();
}
WebXRHand::Iterator::Iterator(WebXRHand& hand)
: m_hand(hand)
{
}
std::optional<KeyValuePair<XRHandJoint, RefPtr<WebXRJointSpace>>> WebXRHand::Iterator::next()
{
if (m_index >= m_hand->m_joints.size())
return std::nullopt;
size_t index = m_index++;
return KeyValuePair<XRHandJoint, RefPtr<WebXRJointSpace>> { static_cast<XRHandJoint>(index), m_hand->m_joints[index].ptr() };
}
WebXRSession* WebXRHand::session()
{
if (!m_inputSource)
return nullptr;
return m_inputSource->session();
}
void WebXRHand::updateFromInputSource(const PlatformXR::FrameData::InputSource& inputSource)
{
if (!inputSource.handJoints) {
m_hasMissingPoses = true;
return;
}
auto& handJoints = *(inputSource.handJoints);
if (handJoints.size() != m_joints.size()) {
m_hasMissingPoses = true;
return;
}
bool hasMissingPoses = false;
for (size_t i = 0; i < handJoints.size(); ++i) {
if (!handJoints[i])
hasMissingPoses = true;
m_joints[i]->updateFromJoint(handJoints[i]);
}
m_hasMissingPoses = hasMissingPoses;
}
}
#endif
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