HYDRA-806 - Create a unit test for translate, rotate, scale (#51)

* Autotest for translate, rotate, scale

test/lib/mayaUsd/render/mayaToHydra/CMakeLists.txt

@@ -11,6 +11,7 @@ set(TEST_SCRIPT_FILES
     testRendererSwitching.py
     testSceneBrowser.py
     testStageAddPrim.py
+    testTransforms.py
     testNewSceneWithStage.py
     testDirectionalLights.py
     testFlowViewportAPI.py

test/lib/mayaUsd/render/mayaToHydra/testTransforms.py

@@ -0,0 +1,101 @@
+# Copyright 2024 Autodesk
+#
+# 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.
+#
+import maya.cmds as cmds
+import maya.mel
+
+import fixturesUtils
+import mtohUtils
+import unittest
+
+class TestTransforms(mtohUtils.MtohTestCase):
+    _file = __file__
+
+    IMAGEDIFF_FAIL_THRESHOLD = 0.01
+    IMAGEDIFF_FAIL_PERCENT = 0.1
+
+    def verifySnapshot(self, imageName):
+        cmds.refresh()
+        self.assertSnapshotClose(imageName, 
+                                 self.IMAGEDIFF_FAIL_THRESHOLD,
+                                 self.IMAGEDIFF_FAIL_PERCENT)
+
+    def test_nativePrim(self):
+        self.makeCubeScene(camDist=6)
+        cubeParent = cmds.group(self.cubeTrans, name='cubeParent')
+        cmds.select(clear=1)
+
+        self.verifySnapshot("cube_untransformed.png")
+
+        cmds.scale(3, 1, 3, self.cubeTrans, absolute=True)
+        self.verifySnapshot("cube_scaled.png")
+
+        cmds.move(0, 2, 0, self.cubeTrans, absolute=True)
+        self.verifySnapshot("cube_scaled_moved.png")
+
+        cmds.rotate(0, 45, 0, self.cubeTrans, absolute=True)
+        self.verifySnapshot("cube_scaled_moved_rotated.png")
+
+        cmds.move(0, -3, 0, cubeParent, absolute=True)
+        self.verifySnapshot("cube_parent_moved.png")
+
+        cmds.rotate(0, 0, 45, cubeParent, absolute=True)
+        self.verifySnapshot("cube_parent_moved_rotated.png")
+
+        cmds.scale(2, 2, 2, cubeParent, absolute=True)
+        self.verifySnapshot("cube_parent_moved_rotated_scaled.png")
+
+    @unittest.skipUnless(mtohUtils.checkForMayaUsdPlugin(), "Requires Maya USD Plugin.")
+    def test_usdPrim(self):
+        import mayaUsd
+        import mayaUsd_createStageWithNewLayer
+        from pxr import UsdGeom, Gf
+
+        cmds.file(new=True, force=True)
+        self.setBasicCam(10)
+        self.setHdStormRenderer()
+
+        # Create a USD stage
+        usdProxyShapeUfePathString = mayaUsd_createStageWithNewLayer.createStageWithNewLayer()
+        stage = mayaUsd.lib.GetPrim(usdProxyShapeUfePathString).GetStage()
+
+        # Define a cube prim in the stage
+        parentA = "/ParentA"
+        childCube = "/ParentA/Cube"
+        parentPrimA = stage.DefinePrim(parentA, 'Xform')
+        childPrimCube = stage.DefinePrim(childCube, 'Cube')
+
+        self.verifySnapshot("usd_cube_untransformed.png")
+
+        UsdGeom.XformCommonAPI(childPrimCube).SetScale((2, 1, 2))
+        self.verifySnapshot("usd_cube_scaled.png")
+
+        UsdGeom.XformCommonAPI(childPrimCube).SetTranslate((0, 2, 0))
+        self.verifySnapshot("usd_cube_scaled_moved.png")
+
+        UsdGeom.XformCommonAPI(childPrimCube).SetRotate(Gf.Vec3f(0, 45, 0))
+        self.verifySnapshot("usd_cube_scaled_moved_rotated.png")
+
+        UsdGeom.XformCommonAPI(parentPrimA).SetTranslate((0, -4, 0))
+        self.verifySnapshot("usd_cube_parent_moved.png")
+
+        UsdGeom.XformCommonAPI(parentPrimA).SetRotate(Gf.Vec3f(0, 0, 45))
+        self.verifySnapshot("usd_cube_parent_moved_rotated.png")
+
+        UsdGeom.XformCommonAPI(parentPrimA).SetScale((2, 3, 2))
+        self.verifySnapshot("usd_cube_parent_moved_rotated_scaled.png")
+
+
+if __name__ == '__main__':
+    fixturesUtils.runTests(globals())