This adds an option MUJOCO_BUILD_USD_PLUGINS to the top level CMakeLists which allows us to build the usdMjcf file format plugin with the rest of mujoco.
In this first version, we allow building against either standalone USD or against Houdini (DCC) since it has it's own fork of USD. When building against standalone USD we also build the file format tests.
PiperOrigin-RevId: 753969974
Change-Id: If691eecbddf45d18b7c4ff76f7650999d42e99c5
Because we introduce an additional parent scope when referencing a `Mesh` prim (required for instancing), we need to create an `over` prim that allows to actually operate on the to-be-referenced Mesh.
PiperOrigin-RevId: 753941355
Change-Id: I829be9e82fe650802afcbc46f4b2f4c81eb53bd1
Adds primvar:displayColor/primvar:displayOpacity to the geom prim if its rgba attribute differs from the default (0.5, 0.5, 0.5, 1.0). This sets the color and opacity directly on the prim with no need for an external material, making it consistent with how rgba is used in mujoco.
PiperOrigin-RevId: 751013128
Change-Id: I059943ec5b266e62c3696d9a0ac4f2033db9e07f
The SDF_FORMAT_ARGS `usdMjcfToggleUsdPhysics` is introduced to toggle writing UsdPhysics or not when converting. Off by default
PiperOrigin-RevId: 746467942
Change-Id: I26cb9a4c4ae2eef96163dab967a74f14940a2a6d
We will still need to tag these with a custom API schema to ease round-tripping but that will follow creation of such a schema.
PiperOrigin-RevId: 746421793
Change-Id: I2df2209b4bc90d763718fb4bea8158b8598755c6
Robin Alazard