| // Copyright 2019 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_OBJECT_SPACE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_OBJECT_SPACE_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; |
| |
| // Helper class that returns an XRSpace that tracks the position of object of |
| // type T (for example XRPlane, XRAnchor). The type T has to have a poseMatrix() |
| // method. |
| template <typename T> |
| class XRObjectSpace : public XRSpace { |
| public: |
| explicit XRObjectSpace(XRSession* session, const T* object) |
| : XRSpace(session), object_(object) {} |
| |
| std::unique_ptr<TransformationMatrix> MojoFromNative() override { |
| return std::make_unique<TransformationMatrix>(object_->MojoFromObject()); |
| } |
| |
| std::unique_ptr<TransformationMatrix> NativeFromMojo() final { |
| return TryInvert(MojoFromNative()); |
| } |
| |
| base::Optional<XRNativeOriginInformation> NativeOrigin() const override { |
| return XRNativeOriginInformation::Create(object_); |
| } |
| |
| void Trace(blink::Visitor* visitor) override { |
| visitor->Trace(object_); |
| XRSpace::Trace(visitor); |
| } |
| |
| private: |
| Member<const T> object_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_OBJECT_SPACE_H_ |