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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/xr/xr_device_pose.h"
#include "third_party/blink/renderer/modules/xr/xr_session.h"
#include "third_party/blink/renderer/modules/xr/xr_utils.h"
#include "third_party/blink/renderer/modules/xr/xr_view.h"
namespace blink {
XRDevicePose::XRDevicePose(
XRSession* session,
std::unique_ptr<TransformationMatrix> pose_model_matrix)
: session_(session), pose_model_matrix_(std::move(pose_model_matrix)) {}
DOMFloat32Array* XRDevicePose::poseModelMatrix() const {
if (!pose_model_matrix_)
return nullptr;
return transformationMatrixToDOMFloat32Array(*pose_model_matrix_);
}
DOMFloat32Array* XRDevicePose::getViewMatrix(XRView* view) {
if (view->session() != session_)
return nullptr;
if (!pose_model_matrix_->IsInvertible())
return nullptr;
TransformationMatrix view_matrix(pose_model_matrix_->Inverse());
// Transform by the negative offset, since we're operating on the inverted
// matrix
const FloatPoint3D& view_offset = view->offset();
view_matrix.PostTranslate3d(-view_offset.X(), -view_offset.Y(),
-view_offset.Z());
return transformationMatrixToDOMFloat32Array(view_matrix);
}
void XRDevicePose::Trace(blink::Visitor* visitor) {
visitor->Trace(session_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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