Walkthrough

The Walkthrough tool simulates movement through a 3D model.

The tool operates in perspective projection. To control the movements of the Walkthrough tool, move the mouse or click one of the first four mode buttons. The buttons perform precise, incremental walkthrough movements in the direction specified.

Click Reset to Front View mode to return to a front view of the model, on the same level as the ground plane.

 

To conduct a walkthrough of a model:

1.	Click the Walkthrough tool from the Visualization tool set.

2.

Click on the drawing and drag while you hold the mouse button to perform the walkthrough. Imagine the drawing area divided into four quadrants. With the mouse button pressed, move forward, backward, left, and right by dragging the mouse in these directions. The place where the four quadrants meet is the “still area”— move the mouse there to slow or stop the walkthrough movement. The farther away from the still area the mouse moves, the faster the movement. To stop the movement, release the mouse button.

Alternatively, use shortcuts on the keyboard to walk through the drawing.

Mode	Mouse Movement/Key	Description
	Move left or right	Turns left or right from the viewer’s location about the Z axis
	Move up or down	Moves forward or backward in the world XY plane
Raise Ground Plane	Alt + move down (Win) or Option + move down (Mac)	Raises the viewpoint height
Lower Ground Plane	Alt + move up (Win) or Option + move up (Mac)	Lowers the viewpoint height
Viewer Looks Down	Alt + move left (Win) or Option + move left (Mac)	Lowers the viewpoint angle
Viewer Looks Up	Alt + move right (Win) or Option + move right (Mac)	Raises the viewpoint angle
Reset to Front View		Sets the drawing to a front view of the model, on the same level as the ground plane
	Ctrl key (Windows) or Command key (Macintosh)	Draws selected objects in full detail, and hides deselected objects (so that the redraws are faster)

When the Walkthrough tool is in use, the Data bar displays the following information to help orient the view.

Data Bar	Description
Yaw	Displays the angle (0 – 360 degrees) between the walking direction and the positive Y axis, to describe the direction of movement in the ground plane. A yaw of 90 degrees indicates movement in the direction of the positive X axis. A yaw of 180 degrees indicates movement in the direction of the negative Y axis.
Pitch	Displays the viewpoint’s viewing angle. A value of 0 degrees indicates that the viewer is looking straight ahead; a value of 45 degrees indicates that the viewer is looking up at an angle 45 degrees from horizontal.
Viewer X/Y/Z	Displays the position of the viewer relative to the ground plane