1 files changed, 54 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/modules/xr/xr_joint_space.h b/chromium/third_party/blink/renderer/modules/xr/xr_joint_space.h
new file mode 100644
index 00000000000..86f7bbbd962
--- /dev/null
+++ b/chromium/third_party/blink/renderer/modules/xr/xr_joint_space.h
@@ -0,0 +1,54 @@
+// Copyright 2020 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.
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_JOINT_SPACE_H_
+#define THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_JOINT_SPACE_H_
+
+#include "base/optional.h"
+#include "device/vr/public/mojom/vr_service.mojom-blink.h"
+#include "third_party/blink/renderer/modules/xr/xr_native_origin_information.h"
+#include "third_party/blink/renderer/modules/xr/xr_space.h"
+#include "third_party/blink/renderer/platform/transforms/transformation_matrix.h"
+
+namespace blink {
+
+class XRSession;
+
+class XRJointSpace : public XRSpace {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  XRJointSpace(XRSession* session,
+               std::unique_ptr<TransformationMatrix> mojo_from_joint,
+               device::mojom::blink::XRHandJoint joint,
+               float radius,
+               device::mojom::XRHandedness handedness);
+
+  float radius() const { return radius_; }
+  device::mojom::blink::XRHandJoint joint() const { return joint_; }
+  const String jointName() const;
+  device::mojom::XRHandedness handedness() const { return handedness_; }
+
+  base::Optional<TransformationMatrix> MojoFromNative() override;
+  bool EmulatedPosition() const override;
+
+  base::Optional<device::mojom::blink::XRNativeOriginInformation> NativeOrigin()
+      const final;
+
+  bool IsStationary() const override;
+
+  std::string ToString() const override;
+
+  void Trace(Visitor*) const override;
+
+ private:
+  const std::unique_ptr<TransformationMatrix> mojo_from_joint_space_;
+  const device::mojom::blink::XRHandJoint joint_;
+  const float radius_;
+  const device::mojom::XRHandedness handedness_;
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_JOINT_SPACE_H_