dataSourcePrim.h

//
// Copyright 2020 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef PXR_USD_IMAGING_USD_IMAGING_DATA_SOURCE_PRIM_H
#define PXR_USD_IMAGING_USD_IMAGING_DATA_SOURCE_PRIM_H

#include "pxr/imaging/hd/dataSource.h"
#include "pxr/imaging/hd/dataSourceTypeDefs.h"

#include "pxr/usd/usd/prim.h"

#include "pxr/usd/usdGeom/xformable.h"
#include "pxr/usd/usdGeom/boundable.h"
#include "pxr/usd/usdGeom/modelAPI.h"

#include "pxr/usdImaging/usdImaging/api.h"
#include "pxr/usdImaging/usdImaging/dataSourceStageGlobals.h"

PXR_NAMESPACE_OPEN_SCOPE

class UsdImagingDataSourceVisibility : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourceVisibility);

    bool Has(const TfToken &name) override;

    TfTokenVector GetNames() override;

    HdDataSourceBaseHandle Get(const TfToken &name) override;

private:
    UsdImagingDataSourceVisibility(
            const UsdAttributeQuery &visibilityQuery,
            const SdfPath &sceneIndexPath,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    UsdAttributeQuery _visibilityQuery;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourceVisibility);


// ----------------------------------------------------------------------------

class UsdImagingDataSourcePurpose : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourcePurpose);

    bool Has(const TfToken &name) override;

    TfTokenVector GetNames() override;

    HdDataSourceBaseHandle Get(const TfToken &name) override;

private:
    UsdImagingDataSourcePurpose(
            const UsdAttributeQuery &purposeQuery,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    UsdAttributeQuery _purposeQuery;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourcePurpose);


// ----------------------------------------------------------------------------

class UsdImagingDataSourceExtentCoordinate : public HdVec3dDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourceExtentCoordinate);

    VtValue GetValue(HdSampledDataSource::Time shutterOffset) override;

    GfVec3d GetTypedValue(HdSampledDataSource::Time shutterOffset) override;

    bool GetContributingSampleTimesForInterval(
            HdSampledDataSource::Time startTime,
            HdSampledDataSource::Time endTime,
            std::vector<HdSampledDataSource::Time> *outSampleTimes) override;

private:
    UsdImagingDataSourceExtentCoordinate(
            const HdVec3fArrayDataSourceHandle &extentAttr,
            const SdfPath &attrPath,
            unsigned int index);

private:
    HdVec3fArrayDataSourceHandle _extentAttr;
    SdfPath _attrPath;
    unsigned int _index;
};

// ----------------------------------------------------------------------------

class UsdImagingDataSourceExtent : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourceExtent);

    bool Has(const TfToken &name) override;

    TfTokenVector GetNames() override;

    HdDataSourceBaseHandle Get(const TfToken &name) override;

private:
    UsdImagingDataSourceExtent(
            const UsdAttributeQuery &extentQuery,
            const SdfPath &sceneIndexPath,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    // Note: the constructor takes sceneIndexPath for change-tracking,
    // but here we're storing the USD attribute path for error reporting!
    SdfPath _attrPath;
    HdVec3fArrayDataSourceHandle _extentAttr;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourceExtent);


// ----------------------------------------------------------------------------

class UsdImagingDataSourceXformResetXformStack : public HdBoolDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourceXformResetXformStack);

    VtValue GetValue(HdSampledDataSource::Time shutterOffset) override;

    bool GetTypedValue(HdSampledDataSource::Time shutterOffset) override;

    bool GetContributingSampleTimesForInterval(
            HdSampledDataSource::Time startTime,
            HdSampledDataSource::Time endTime,
            std::vector<HdSampledDataSource::Time> *outSampleTimes) override {
        return false;
    }

private:
    UsdImagingDataSourceXformResetXformStack(
            const UsdGeomXformable::XformQuery &xformQuery,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    UsdGeomXformable::XformQuery _xformQuery;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourceXformResetXformStack);

// ----------------------------------------------------------------------------

class UsdImagingDataSourceXformMatrix : public HdMatrixDataSource
{
public:

    HD_DECLARE_DATASOURCE(UsdImagingDataSourceXformMatrix);

    VtValue GetValue(HdSampledDataSource::Time shutterOffset) override;

    GfMatrix4d GetTypedValue(HdSampledDataSource::Time shutterOffset) override;

    bool GetContributingSampleTimesForInterval(
            HdSampledDataSource::Time startTime,
            HdSampledDataSource::Time endTime,
            std::vector<HdSampledDataSource::Time> *outSampleTimes) override;

private:
    UsdImagingDataSourceXformMatrix(
            const UsdGeomXformable::XformQuery &xformQuery,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    UsdGeomXformable::XformQuery _xformQuery;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourceXformMatrix);

// ----------------------------------------------------------------------------

class UsdImagingDataSourceXform : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourceXform);

    bool Has(const TfToken &name) override;

    TfTokenVector GetNames() override;

    HdDataSourceBaseHandle Get(const TfToken &name) override;

private:
    UsdImagingDataSourceXform(
            const UsdGeomXformable::XformQuery &xformQuery,
            const SdfPath &sceneIndexPath,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    UsdGeomXformable::XformQuery _xformQuery;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourceXform);

// ----------------------------------------------------------------------------

class UsdImagingDataSourceModel : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourceModel);

    bool Has(const TfToken &name) override;

    TfTokenVector GetNames() override;

    HdDataSourceBaseHandle Get(const TfToken &name) override;

private:
    UsdImagingDataSourceModel(
            const UsdGeomModelAPI &model,
            const SdfPath &sceneIndexPath,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

private:
    UsdGeomModelAPI _model;
    const SdfPath _sceneIndexPath;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourceModel);

// ----------------------------------------------------------------------------

class UsdImagingDataSourcePrim : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(UsdImagingDataSourcePrim);

    USDIMAGING_API
    bool Has(const TfToken &name) override;

    USDIMAGING_API
    TfTokenVector GetNames() override;

    USDIMAGING_API
    HdDataSourceBaseHandle Get(const TfToken &name) override;

    USDIMAGING_API
    static HdDataSourceLocatorSet Invalidate(
            const TfToken &subprim, const TfTokenVector &properties);

protected:
    USDIMAGING_API
    UsdImagingDataSourcePrim(
            const SdfPath &sceneIndexPath,
            UsdPrim usdPrim,
            const UsdImagingDataSourceStageGlobals &stageGlobals);

    // Accessors, for derived classes...
    const SdfPath &_GetSceneIndexPath() const {
        return _sceneIndexPath;
    }

    const UsdPrim &_GetUsdPrim() const {
        return _usdPrim;
    }

    const UsdImagingDataSourceStageGlobals &_GetStageGlobals() const {
        return _stageGlobals;
    }

private:
    const SdfPath _sceneIndexPath;
    UsdPrim _usdPrim;
    const UsdImagingDataSourceStageGlobals &_stageGlobals;
};

HD_DECLARE_DATASOURCE_HANDLES(UsdImagingDataSourcePrim);

PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_USD_IMAGING_USD_IMAGING_DATA_SOURCE_PRIM_H