translatorUtil.h

//
// Copyright 2016 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 PXRUSDMAYA_TRANSLATOR_UTIL_H
#define PXRUSDMAYA_TRANSLATOR_UTIL_H

#include "pxr/pxr.h"
#include "usdMaya/api.h"
#include "usdMaya/primReaderArgs.h"
#include "usdMaya/primReaderContext.h"

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

#include <maya/MObject.h>
#include <maya/MString.h>

PXR_NAMESPACE_OPEN_SCOPE

enum class UsdMayaShadingNodeType {
    NonShading,
    Light,
    PostProcess,
    Rendering,
    Shader,
    Texture,
    Utility
};

struct UsdMayaTranslatorUtil
{
    PXRUSDMAYA_API
    static bool
    CreateTransformNode(
            const UsdPrim& usdPrim,
            MObject& parentNode,
            const UsdMayaPrimReaderArgs& args,
            UsdMayaPrimReaderContext* context,
            MStatus* status,
            MObject* mayaNodeObj);

    PXRUSDMAYA_API
    static bool
    CreateDummyTransformNode(
            const UsdPrim& usdPrim,
            MObject& parentNode,
            bool importTypeName,
            const UsdMayaPrimReaderArgs& args,
            UsdMayaPrimReaderContext* context,
            MStatus* status,
            MObject* mayaNodeObj);

    PXRUSDMAYA_API
    static bool
    CreateNode(
            const UsdPrim& usdPrim,
            const MString& nodeTypeName,
            MObject& parentNode,
            UsdMayaPrimReaderContext* context,
            MStatus* status,
            MObject* mayaNodeObj);

    PXRUSDMAYA_API
    static bool
    CreateNode(
            const SdfPath& usdPath,
            const MString& nodeTypeName,
            MObject& parentNode,
            UsdMayaPrimReaderContext* context,
            MStatus* status,
            MObject* mayaNodeObj);

    PXRUSDMAYA_API
    static bool
    CreateNode(
            const MString& nodeName,
            const MString& nodeTypeName,
            MObject& parentNode,
            MStatus* status,
            MObject* mayaNodeObj);

    PXRUSDMAYA_API
    static bool
    CreateShaderNode(
            const MString& nodeName,
            const MString& nodeTypeName,
            const UsdMayaShadingNodeType shadingNodeType,
            MStatus* status,
            MObject* shaderObj,
            const MObject parentNode=MObject::kNullObj);

    template <typename APISchemaType>
    static APISchemaType GetAPISchemaForAuthoring(const UsdPrim& usdPrim)
    {
        if (!usdPrim.HasAPI<APISchemaType>()) {
            return APISchemaType::Apply(usdPrim);
        }

        return APISchemaType(usdPrim);
    }

};



PXR_NAMESPACE_CLOSE_SCOPE

#endif