HUSD_SetAttributes.h

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/*
 * Copyright 2019 Side Effects Software Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef __HUSD_SetAttributes_h__
#define __HUSD_SetAttributes_h__

#include "HUSD_API.h"
#include "HUSD_DataHandle.h"
#include "HUSD_TimeCode.h"
#include <UT/UT_StringHolder.h>

class UT_Options;
class HUSD_FindPrims;

class HUSD_API HUSD_SetAttributes
{
public:
                         HUSD_SetAttributes(HUSD_AutoWriteLock &lock);
                        ~HUSD_SetAttributes();

    /// @{ Create an attribute or primvar on a primitive.
    bool                 addAttribute(const UT_StringRef &primpath,
                                const UT_StringRef &attrname,
                                const UT_StringRef &type,
                                bool custom = true) const;

    bool                 addPrimvar(const UT_StringRef &primpath,
                                const UT_StringRef &primvarname,
                                const UT_StringRef &interpolation,
                                const UT_StringRef &type) const;
    /// @}

    /// @{ Set an attribute or primvar value on a primitive.
    template<typename UtValueType>
    bool                 setAttribute(const UT_StringRef &primpath,
                                const UT_StringRef &attrname,
                                const UtValueType &value,
                                const HUSD_TimeCode &timecode,
                                const UT_StringRef &valueType =
                                    UT_StringHolder::theEmptyString,
                                bool custom = true,
                                bool clear_existing = true) const;

    template<typename UtValueType>
    bool                 setPrimvar(const UT_StringRef &primpath,
                                const UT_StringRef &primvarname,
                                const UT_StringRef &interpolation,
                                const UtValueType &value,
                                const HUSD_TimeCode &timecode,
                                const UT_StringRef &valueType =
                                    UT_StringHolder::theEmptyString,
                                int elementsize = 1,
                                bool clear_existing = true) const;
    /// @}


    /// @{ Set an attribute or primvar value on a primitive,
    /// but accept the *subclasses* of the UT_Array. 
    template<typename UtValueType>
    bool                 setAttributeArray(const UT_StringRef &primpath,
                                const UT_StringRef &attrname,
                                const UT_Array<UtValueType> &value,
                                const HUSD_TimeCode &timecode,
                                const UT_StringRef &valueType =
                                    UT_StringHolder::theEmptyString,
                                bool custom = true,
                                bool clear_existing = true) const
                         { return setAttribute(primpath, attrname,
                                 value, timecode, valueType,
                                 custom, clear_existing); }

    template<typename UtValueType>
    bool                 setPrimvarArray(const UT_StringRef &primpath,
                                const UT_StringRef &primvarname,
                                const UT_StringRef &interpolation,
                                const UT_Array<UtValueType> &value,
                                const HUSD_TimeCode &timecode,
                                const UT_StringRef &valueType =
                                    UT_StringHolder::theEmptyString,
                                int elementsize = 1,
                                bool clear_existing = true) const
                         { return setPrimvar(primpath, primvarname,
                                 interpolation, value, timecode,
                                 valueType, elementsize, clear_existing); }
    /// @}

    /// @{ Set attributes for every entry in a UT_Options object.
    bool                 setAttributes(const UT_StringRef &primpath,
                                const UT_Options &options,
                                const HUSD_TimeCode &timecode,
                                const UT_StringRef &attrnamespace =
                                    UT_StringHolder::theEmptyString,
                                bool clear_existing = true) const;
    /// @}

    /// @{ Blocks an attribute or primvar.
    bool                 blockAttribute(const UT_StringRef &primpath,
                                const UT_StringRef &attrname) const;
    bool                 blockPrimvar(const UT_StringRef &primpath,
                                const UT_StringRef &primvarname) const;
    bool                 blockPrimvarIndices(const UT_StringRef &primpath,
                                const UT_StringRef &primvarname) const;
    /// @}
  
    /// @{ Creates a connection between the given shading (ie, input or output)
    /// attributes.
    bool                connect(const UT_StringRef &src_primpath,
                                const UT_StringRef &src_attrname,
                                const UT_StringRef &dst_primpath,
                                const UT_StringRef &dst_attrname) const;
    /// @}

    /// @{ Disconnects a shading (ie input or output) attribute from its source.
    bool                disconnect(const UT_StringRef &primpath,
                                const UT_StringRef &attrname) const;
    bool                disconnectIfConnected(const UT_StringRef &primpath,
                                const UT_StringRef &attrname) const;
    bool                isConnected(const UT_StringRef &primpath,
                                const UT_StringRef &attrname) const;
    /// @}
   

    /// Sets primvar's indices, making it an indexed primvar.
    bool                 setPrimvarIndices( const UT_StringRef &primpath,
                                const UT_StringRef &primvar_name,
                                const UT_ExintArray &indices,
                                const HUSD_TimeCode &timecode,
                                bool clear_existing = true) const;

    /// @{ Returns effective time code at which the value should be set.
    /// Eg, if attribute has time samples and the given time code is default,
    /// it needs to be "promoted" to time code for the specific frame/time.
    /// Otherwise, setting value at default time will not take effect, if
    /// there is already a value at that specific frame/time.
    /// This ensures that getAttribute() returns the same value as set here.
    HUSD_TimeCode        getAttribEffectiveTimeCode(
                                const UT_StringRef &primpath,
                                const UT_StringRef &attribname,
                                const HUSD_TimeCode &timecode) const;
    HUSD_TimeCode        getPrimvarEffectiveTimeCode(
                                const UT_StringRef &primpath,
                                const UT_StringRef &primvarname,
                                const HUSD_TimeCode &timecode) const;
    HUSD_TimeCode        getPrimvarIndicesEffectiveTimeCode(
                                const UT_StringRef &primpath,
                                const UT_StringRef &primvarname,
                                const HUSD_TimeCode &timecode) const;
    /// @}

    /// Copies an attribute from one primitive to another. This method will
    /// copy all values and time samples, ensure matching data types, etc.
    bool                 copyProperty(
                                const UT_StringRef &srcprimpath,
                                const UT_StringRef &srcpropertyname,
                                const HUSD_FindPrims &finddestprims,
                                const UT_StringRef &destpropertyname,
                                bool copymetadata,
                                bool blocksource);

private:
    HUSD_AutoWriteLock  &myWriteLock;
};

#endif