[Bug]: Lookat parameter on gs.sensors.RasterizerCameraOptions not taking effect

[NanaKay007]

Bug Description

Hello,

I'm fairly convinced there's a bug associated with this sensor interface. I have tried various values for 'lookat' parameter, but none take effect. However, removing entity_indx fixes the issue. Based on the docs, it's hard to see why this specific set-up wouldn't work. Appreciate any help here. Thanks.

robot = scene.add_entity(
            gs.morphs.URDF(
                file="urdf/go2/urdf/go2.urdf",
                **entity_kwargs,
            )
        )

sensor_kwargs = dict(
        entity_idx=robot.idx,
        lookat=(1,0,3),
        pos=(0.3,0,0.3),
        draw_debug=True,
        euler_offset=(0,0,0),
        link_idx_local=0,
        fov=70,
    )
sensor = scene.add_sensor(gs.sensors.RasterizerCameraOptions(**sensor_kwargs))

Steps to Reproduce

robot = scene.add_entity(
            gs.morphs.URDF(
                file="urdf/go2/urdf/go2.urdf",
                **entity_kwargs,
            )
        )

sensor_kwargs = dict(
        entity_idx=robot.idx,
        lookat=(1,0,3),
        pos=(0.3,0,0.3),
        draw_debug=True,
        euler_offset=(0,0,0),
        link_idx_local=0,
        fov=70,
    )
sensor = scene.add_sensor(gs.sensors.RasterizerCameraOptions(**sensor_kwargs))
 
def read_sensor_cpu():
      data = sensor.read().rgb
      return data.cpu()

scene.start_recording(
      read_sensor_cpu,
      gs.recorders.MPLImagePlot(
          show_window=True
      )
  )

Expected Behavior

look at should take effect with entity attached.

Screenshots/Videos

No response

Relevant log output

Environment

• OS: macOS Tahoe
• GPU/CPU [e.g. A100, RTX 4090, M3pr, Intel I9-9900k, Ryzen 5900x] (N/A if no GPU/CPU)
• GPU-driver version (N/A if no GPU)
• CUDA / CUDA-toolkit version : N/A

Release version or Commit ID

version: 0.4.1

Additional Context

No response