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Drawing in three dimensions - Viewing entities in three dimensions

To complete the command, click OK.

  1. Indicates the current viewpoint.
  2. Click to pan the drawing.
  3. Click to display the Preset Viewpoints dialog box.
  4. Click to update the drawing display whenever you click a tool.
  5. Click to zoom extents.
  1. Click to zoom out.
  2. Click to zoom in.
  3. Shows the current viewpoint orientation.
  4. Type or select the rotation angle increment.
  5. Click to rotate the view about a predefined axis.
  1. You can set the current viewing direction to the plan view of the current user coordinate system (UCS), a previously saved UCS, or the World Coordinate System (WCS).
To display a plan view of the current drawing
  1. Do one of the following:
  2. Choose View > 3D Views > Plan View.
  3. Type plan and then press Enter.
  4. In the prompt box, choose one of the following:
  5. Current displays the plan view of the current UCS.
  6. UCS displays the plan view of a saved UCS. The program prompts you for the name of the UCS.
  7. World displays the plan view of the WCS.
Dinamic view
  1. Dynamically defines parallel or visual perspective views. Cameras and targets are used to dynamically view your three-dimensional drawing. You can specify the viewing direction between the camera and the target. The center point of the selected entities is considered the target.
To create a dynamic 3D view
  1. Do one of the following:
  2. Select View> dynamic view
  3. Type dview and then press Enter.
  4. Select the objects to be used in the preview. If you select too many items the operations of draging and updating images become slow.
  5. Select an option to create the view:
  6. In the command Dynamic view you have the following options:
  7. Camera: Specify a new location for the camera by rotating around the point of aim. The magnitude of rotation is determined by two angles: the angle in the XY plane and the XY plane.
    The figure shows the effect of camera rotation from the initial position to the right, leaving unchanged the angle to the XY plane.
  • Rotation: Set the camera position using the rotation buttons. The buttons above set positive rotations, those under, negative. The default value for rotation increment is 6 degrees and it can be changed in the Change by spin control.
  • Angle in XY plane: Indicates the camera position at a certain degree in the XY plane relative to the X axis of the current UCS. Setting the rotation value at 0 degree you can obtain a view toward the X axis in the origin point direction.
  • Angle from XY plane: Indicates the camera position with an angle above or under the XY plane. Angled at 90 degrees the camera produces a downward view, a -90 degrees angle produces an upward view. Setting the value at 0 degree, the camera is positioned in the same direction of the XY plane of the current UCS.
  • Zoom: Extents: Displays the drawing to the greatest possible magnification. Zoom In: Doubles the current magnification of the drawing. Zoom Out: Reduces the magnification of the drawing by half.
  • Target: You can specify a new position for the target (the entities you are viewing) by rotating the target around the camera.
  • To twist the view: You can tilt the view of your three-dimensional drawing by twisting the view around the line of sight between the camera and the target.
  1. TIP The twist angle is measured counterclockwise.
  • To specify the camera's distance from the target: You can move the camera in or out along the line of sight relative to the target. This option turns on perspective viewing, that means that objects farther from the camera appear smaller than those closer to the camera. A special perspective icon replaces the coordinate system icon. You are prompted for the new camera-to-target distance.

    If the target and camera points are close to each other, or if you specify long-focal-length lens, you might see very little of your drawing when you specify a new distance. If you see little or none of your drawing, magnify the drawing without turning the perspective viewing on with the Zoom option of DVIEW.
  • To specify the x,y,z coordinates of the camera and target: Locates the camera and target points using the X,Y,Z coordinates. You can use the XYZ point filters. A rubber-band line is drawn from the current target position to the crosshairs. You are asked for a new target location and a rubber-band line connects the target point to the crosshairs to help you place the camera relative to the target.
  • To turn perspective off: Turns off the perspective viewing. To turn on the perspective choose the option Distance..
  • To remove the visualization of hidden lines: To aid in visualization, you can remove all the lines that are hidden behind other surfaces when seen from your vantage point. Wire-frame models always appear transparent, because they have no surfaces. Surface models appear filled, with surfaces applied to all visible sides.
  • To specify the distance to pan: The displacement point indicates the distance you want to move the display.
  • To change the magnification: You can change the magnification by increasing or decreasing the size of entities in the current viewport. If the perspective is on, the Zoom adjusts the camera lens length, which changes the field of view and causes more or less of the drawing to be visible. The default lens length is 50mm, simulating what you'd see with a 35mm camera and a 50mm lens. The lens length increasing is similar to switching to a telephoto lens. The lens length decreasing widens the field of view as with a wide-angle lens. If the perspective is off, the Zoom option dynamically increases or decreases the apparent size of objects in the current view.