Homework Assignment 3. A bookstore scene created in Unity. Including travel and manipulation techniques
- Unity 2017.3.1
- Steam VR
- 5UDE ( a package written by Dr Ryan McMahan and team at UTDallas )
- go to the directory of your choice
- clone this repo
git clone git@github.com:saayv1/3D-Manipulation.git
or
simply download it from the clone option on this page
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open Unity 2017.3.1
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select the 'Open' option
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Navigate to the directory in which you've cloned the project using the popup file explorer window
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click on 'Open'
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after the project has loaded completely, double-click the 'Study' scene.
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select Vive/Real World Simulator within the Driving scene
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If you aren't using the HTC Vive,
- go to the inspector and check the checkBox next to Real world simulator
- Go into the Real World Simulator and select the handheld controllers to operate the car and use the head mounted display to adjust the view.
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Steering States There are 3 meaningful steering states
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Not Steering
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Steering Forward
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Steering Backward
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Not Steering is the state where the user remains stationary in the virtual environment. There are no space transformations and the visual is of the user standing still and upright. No buttons should be pressed for this state.
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Steering forward is the state where the user moves ‘forward’ in the virtual environment. The ‘forward’ motion is dependent on the position of the right tracker. For this steering state, the user would have to press the touchpad as well as the touchpad button. The touchpad’s y co-ordinate needs to be greater than 0 along with the button pressed for this state to be activated. This would work when the initial state is Not Steering.
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Steering backward is the state where the user moves ‘backward’ in the virtual environment. The ‘backward’ motion is dependent on the position of the right tracker. For this steering state, the user would have to press the touchpad as well as the touchpad button. The touchpad’s y co-ordinate needs to be less than 0 along with the button pressed for this state to be activated. This would work when the initial state is Not Steering.
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Interaction states There are 5 meaningful interaction states
- Open
- Closed
- Touching
- Holding
- Destroy
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Open is the state where the virtual hand does not hold or touch any object. This state is analogous to an open palm.
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Closed is the state where the virtual hand is unable to hold anything and the virtual hand would be able to knock off interactive objects. This state is analogous to a fist which can be used to knock off objects. When the trigger button on the tracker is pressed, the state of the hand transitions from Open to Closed.
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Touching is the state where the virtual hand is in contact with an interactive object. This state is analogous to touching an object, without holding or assuming control over it. When the virtual tracker overlaps with an object in the virtual environment, the state of the hand transitions from Open to Touching.
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Holding is the state where the virtual hand is in control over an object; the virtual hand grasps the object and is able to rotate it or throw it away. When the virtual hand is in the touching state and the trigger button on the tracker is pressed, the state of the hand moves on from Touching to Holding.
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Destroy is the state where the virtual object is destroyed using both hands. When the virtual dominant hand (the hand used for interactions) is holding on to an object, the non dominant hand(the hand not used for interactions) touches the same object and the trigger button on the non-dominant hand tracker is pressed, the object is destroyed. For this state, the hand used for interactions must be holding onto an object (Holding state) and the hand not used for interactions must touch the same object and the press the trigger button. Soon after the object is destroyed the state transitions to Open. This state is analogous to crushing an object with two hands.