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TemplateAssetPathを使う

ipynbFile UsdClipsAPI_02__TemplateAssetPathを使う.ipynb

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from pxr import Usd,Sdf

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ROOT_PATH = "d:/work/py37/USD/clip/"

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# Clipを作る
A_1 = Sdf.Layer.FindOrOpen(ROOT_PATH + 'A/clip.1.usda')
A_2 = Sdf.Layer.FindOrOpen(ROOT_PATH + 'A/clip.2.usda')
A_3 = Sdf.Layer.FindOrOpen(ROOT_PATH + 'A/clip.3.usda')
A_4 = Sdf.Layer.FindOrOpen(ROOT_PATH + 'A/clip.4.usda')
manifestA = Usd.ClipsAPI.GenerateClipManifestFromLayers([A_1,A_2,A_3,A_4],'/ModelA')
print(manifestA.ExportToString())
manifestA.Export(ROOT_PATH + "/A/manifest_sample.usda")
B_1 = Sdf.Layer.FindOrOpen(ROOT_PATH + 'B/clip.1.usda')
B_2 = Sdf.Layer.FindOrOpen(ROOT_PATH + 'B/clip.2.usda')
manifestB = Usd.ClipsAPI.GenerateClipManifestFromLayers([B_1,B_2],'/ModelB')
manifestB.Export(ROOT_PATH + "/B/manifest_sample.usda")
print(manifestB.ExportToString())

Success

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#usda 1.0

over "ModelA"
{
    double a
}


#usda 1.0

over "ModelB"
{
    double b
}

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# Clipを作るためのレイヤーを用意。
stage = Usd.Stage.Open(ROOT_PATH + "stage.usda")
stage.Reload()
print(stage.GetRootLayer().ExportToString())
prim = stage.GetPrimAtPath('/TestModel')
# ClipsAPIの引数で、Clipを追加したいSdfPathを指定する
clipAPI = Usd.ClipsAPI(prim)

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#usda 1.0
(
    endTimeCode = 4
    startTimeCode = 1
)

def "TestModel"
{
    double a
    double b
}

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# Clipのレイヤーをセット
clipAPI.SetClipAssetPaths([Sdf.AssetPath(ROOT_PATH + 'A/clip.1.usda'),
                           Sdf.AssetPath(ROOT_PATH + 'A/clip.2.usda'),
                           Sdf.AssetPath(ROOT_PATH + 'A/clip.3.usda'),
                           Sdf.AssetPath(ROOT_PATH + 'A/clip.4.usda')],'A')
clipAPI.SetClipManifestAssetPath(Sdf.AssetPath(ROOT_PATH + 'A/manifest_sample.usda'),'A')

Success

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True

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# Templateの場合。
# Templateを使用すると hogehoge.#.usda のように連番部分を # で表せる。
clipAPI.SetClipTemplateAssetPath(ROOT_PATH + 'B/clip.#.usda','B')
clipAPI.SetClipTemplateStartTime(1,'B')
clipAPI.SetClipTemplateEndTime(4,'B')
clipAPI.SetClipTemplateStride(1,'B')
clipAPI.SetClipManifestAssetPath(Sdf.AssetPath(ROOT_PATH + 'B/manifest_sample.usda'),'B')

Success

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True

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# Clip側にある読み先のPrimを指定する
clipAPI.SetClipPrimPath('/ModelA','A')
clipAPI.SetClipPrimPath('/ModelB','B')

Success

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True

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# CurrentTime時にどのClipを使用するかIndexを指定する
for num,c in enumerate([A_1,A_2,A_3,A_4]):
    currentActive  = list(clipAPI.GetClipActive('A'))
    currentActive.append([num+1,num])
    clipAPI.SetClipActive(currentActive,'A')

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# 複数Clipsetを指定する場合。
clipAPI.SetClipSets(Sdf.StringListOp.Create(['A','B']))

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True

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print(stage.GetRootLayer().ExportToString())
stage.GetRootLayer().Export(ROOT_PATH + 'result.usda')

Success

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#usda 1.0
(
    endTimeCode = 4
    startTimeCode = 1
)

def "TestModel" (
    clips = {
        dictionary A = {
            double2[] active = [(1, 0), (2, 1), (3, 2), (4, 3)]
            asset[] assetPaths = [@d:/work/py37/USD/clip/A/clip.1.usda@, @d:/work/py37/USD/clip/A/clip.2.usda@, @d:/work/py37/USD/clip/A/clip.3.usda@, @d:/work/py37/USD/clip/A/clip.4.usda@]
            asset manifestAssetPath = @d:/work/py37/USD/clip/A/manifest_sample.usda@
            string primPath = "/ModelA"
        }
        dictionary B = {
            asset manifestAssetPath = @d:/work/py37/USD/clip/B/manifest_sample.usda@
            string primPath = "/ModelB"
            string templateAssetPath = "d:/work/py37/USD/clip/B/clip.#.usda"
            double templateEndTime = 4
            double templateStartTime = 1
            double templateStride = 1
        }
    }
    prepend clipSets = ["A", "B"]
)
{
    double a
    double b
}

Success

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True


clipSetsを指定すると、１つのPrimに対して複数のValueClipを指定できる