XrSpatialGraphBridge.h

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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
 
#pragma once
 
#include <array>
#include <optional>
#include "XrStruct.h"
#include "XrHandle.h"
#include "XrGuid.h"
 
namespace xr {
    class SpatialGraphNodeBindingHandle : public xr::UniqueXrHandle<XrSpatialGraphNodeBindingMSFT> {};
 
// GUID_DEFINED is defined in guiddef.h
#ifdef GUID_DEFINED
 
    struct SpatialGraphNodeBindingProperties {
        GUID nodeId;
        XrPosef poseInNodeSpace;
    };
 
    inline void SetNodeId(XrSpatialGraphNodeSpaceCreateInfoMSFT& createInfo, const GUID& guid) {
#ifdef __STDC_LIB_EXT1__
        memcpy_s(&createInfo.nodeId, sizeof(createInfo.nodeId), &guid, sizeof(guid));
#else
        memcpy(&createInfo.nodeId, &guid, sizeof(guid));
#endif
    }
 
    inline const GUID& GetNodeIdAsGuid(const XrSpatialGraphNodeBindingPropertiesMSFT& properties) {
        return reinterpret_cast<GUID const&>(properties.nodeId);
    }
 
    inline xr::SpaceHandle
    CreateSpatialGraphNodeSpace(XrSession session, XrSpatialGraphNodeTypeMSFT nodeType, const GUID& nodeId, const XrPosef& pose) {
        XrSpatialGraphNodeSpaceCreateInfoMSFT spaceCreateInfo{XR_TYPE_SPATIAL_GRAPH_NODE_SPACE_CREATE_INFO_MSFT};
        spaceCreateInfo.nodeType = nodeType;
        spaceCreateInfo.pose = pose;
        SetNodeId(spaceCreateInfo, nodeId);
        xr::SpaceHandle space;
        CHECK_XRCMD(xrCreateSpatialGraphNodeSpaceMSFT(session, &spaceCreateInfo, space.Put(xrDestroySpace)));
        return space;
    }
 
    inline xr::SpatialGraphNodeBindingHandle
    TryCreateSpatialGraphStaticNodeBinding(XrSession session, XrSpace space, XrPosef poseInSpace, XrTime time) {
        xr::SpatialGraphNodeBindingHandle nodeBinding;
        XrSpatialGraphStaticNodeBindingCreateInfoMSFT createInfo{XR_TYPE_SPATIAL_GRAPH_STATIC_NODE_BINDING_CREATE_INFO_MSFT};
        createInfo.space = space;
        createInfo.poseInSpace = poseInSpace;
        createInfo.time = time;
        CHECK_XRCMD(
            xrTryCreateSpatialGraphStaticNodeBindingMSFT(session, &createInfo, nodeBinding.Put(xrDestroySpatialGraphNodeBindingMSFT)));
        return nodeBinding;
    }
 
    inline SpatialGraphNodeBindingProperties GetSpatialGraphNodeBindingProperties(XrSpatialGraphNodeBindingMSFT nodeBinding) {
        XrSpatialGraphNodeBindingPropertiesMSFT properties{XR_TYPE_SPATIAL_GRAPH_NODE_BINDING_PROPERTIES_MSFT};
        CHECK_XRCMD(xrGetSpatialGraphNodeBindingPropertiesMSFT(nodeBinding, nullptr, &properties));
        return {GetNodeIdAsGuid(properties), properties.poseInNodeSpace};
    }
#endif // GUID_DEFINED
} // namespace xr