The 3D View in Global
Mapper allows registered users to view gridded elevation data and
any overlying raster or vector data in a true perspective 3D manner. In
addition, any vector data with associated
elevation values can also be displayed in true 3D and videos may be created
using the Global Mapper Fly-Through feature. The 3D viewer can also display 3D model formats, and render multiple terrain layers in a stack.
To open the 3D view, select the 3D view button from the Viewer toolbar, or select 3D View... from the View menu.
When selected, the 3D View button displays a window containing a 3D view of the data in the current workspace. The 3D view can show in its own window, or be docked inside of the main application. For more information see Window Docking.
Any imagery or vector data being drawn on top of the elevation grid(s) in the main Global Mapper view will automatically be draped on top of the elevation data in the 3D View window. If so configured, any 3D vector data will be displayed in space as well.
The 3D view has multiple navigation modes that change how the mouse and keyboard move the camera in relation to the data scene.
Press the default view button to return to the full data extent at the default orientation (looking north and slightly down on the loaded data).
This option displays a compass on the map. For more settings go to 3D View Configuration.
This option displays a 3D pivot axis. This axis shows the current center-point of the navigation. The pivot axis constantly updates as the display is zoomed and panned, to allow for free movement throughout the data.
The axis display will display shaded darker when it is behind the visible data. For more settings go to 3D View Configuration.
Shortcut to toggle on/ off the pivot axis display: P key
This button is used to access the 3D View Properties dialog, which contains options to configure the 3D view settings, including the vertical exaggeration, the water display, background color, 3D vector display, as well as the terrain and draped image resolution. For more information see 3D View Configuration
To link the 2D and 3D views, select the Link 2D/ 3D views button found on the Global Mapper Viewer Toolbar. This will link the relative panning and zooming of the 3D view when the primary 2D map view is panned or zoomed. The 3D view will also refresh based on any changes to the Overlay Control center, such as loading data, turning on and off layers, or running tools that create new data. The link is turned on by default.
When the link is disabled, the 3D view will not refresh to match changes in the primary 2D map view display until the cursor is over the 3D window. Panning and zooming the 2D view will not change the 3D map display.
Keyboard Shortcut: To refresh the 3D view, use the CTRL+3 or F5 hot keys in the 3D viewer.
The Selection and Measure Mode tools allow for the selection of vector
features in the 3D viewer, and provide options for measuring distances
and areas. Right-click with either of these tools to access additional
options and settings.
Activating the Digitizer Mode in the 3D View will enable selection of lidar, point, line or area features in the 3D View window. To select multiple features at one time (sweep select), enable the Digitizer, then click and drag your cursor over the features of interest in the 3D View. Once you stop this action, your features will appear selected in 3D View and in 2D.Context Menu
The right-click menu will bring up the following Digitizer feature creation and feature editing options in the 3D View.
- EDIT - Edit Selected Feature
- Delete Selected Feature
- CLEAR - Clear Current Selection
- Create Area/ Polygon Features
- Create Line Features
- Create Point/ Text Features
- Advanced Feature Creation Options
Move/ Reshape Feature(s)
- Vertex Editing
- Attribute/ Style Functions
- Crop/ Combine/ Split Functions
- Advanced Selection Options
- Snap Cursor to Feature
- Center 2D view on selected feature (CTRL+ Home)
Keyboard shortcut: Pressing the D key will enable or disable digitizer mode in the 3D view.
Activating Measure Mode will allow you to left-click in the 3D View to define a line for distance measurement, or a polygon for area measurement. Right-clicking will end the line or polygon feature to finish the measurement. In the upper left of the 3D View window measurement values will be displayed, right-click to access the 3D View window's Measure Tool menu.
Note: The Measure tool is linked between 2D and 3D, and selecting either button will enable the tool in both 2D and 3D.
Keyboard shortcut: Pressing the M key will enable or disable measure mode.
With snap cursor enabled, the digitizer selection tool, digitizer feature creation, or measure tool will show a point feature indicating the nearest selectable point or vertex if one is nearby.
With snap mode enabled, the cursor point in 3D will change color to indicate what is being snapped to. A green point indicated terrain is snapped; an orange point indicates snapping to the vertex of a vector. For more information see Create New Feature in 3D with Vertex and Terrain Snapping
When snap cursor is not enabled, the selection cursor will change color to red to indicate when a selection is available at the current cursor location.
The drop down
menu may be used to set a specific sky texture background or to set a
solid background (None). The color of the solid background may be specified
in the 3D View Properties dialog.
Selecting this tool will bring up the 3D Screen Capture Options dialog (below), used for saving an image of the 3D view to a JPEG, PNG, TIFF or BMP image format. Additional sizing options are also available.
The buttons at the far right corner of the 3D view may be used to make the 3D window full screen when undocked, or close the 3D window. Grab the top bar of the 3D view to move and dock or un-dock the window. For more information about windows see Window Docking
|CTRL + 3||
|F5||Refresh the 3D view|
Number 5 / CTRL+SHIFT+D
|Return to default view|
|CTRL + Home||
|Numbers 8 / 2||Control tilt forward and back *
|Numbers 4 / 6||
|Numbers 7 / 9||
|Numbers 1 / 3||Move down*
|Mouse Wheel||Roll to zoom in and out or raise and lower the walk mode height. Click and drag to pan|
|Left Mouse Button||Navigate the view. Forward / back movements tilt the scene up or down; left/right movements rotate the view. *
|Right Mouse Button||Forward / back movements zoom in or out. *|
|Left Mouse Button||Forward / back movements move forwards or back in the scene. Left / right movements rotate the view.|
|Right Mouse Button||Raise and lower walk mode height.|
|Mouse Wheel||Click and drag to change the pitch. Roll to raise and lower the walk mode height|
|Arrow Up / Down||Move into or away from the scene. *|
|Arrow Left / Right||Rotate the view around the current location. *|
|Page Up / Down||
Advanced 3D Display and Navigation
|V||Locks movement to the vertical plane|
|H||Locks movement to the horizontal plane|
|F11||Decreases the field of view by 5 degrees*|
|F12||Increases the field of view by 5 degrees*|
|Home /CTRL+SHIFT+D/ 5 key||Default View. This is the standard view that you get when you open the 3D viewer.|
3D Tools and Settings
|W||Enable or disable wireframe|
|CTRL +W||Enable walk mode|
|CTRL+SHIFT+W||Enable/ disable water level display|
|T||Enable or disable display of textures on meshes
|M||Enable or disable Measure tool|
|D||Enable or disable Digitizer tool|
|CTRL+SHIFT+D|| Sets the default view
|E||Resets vertical exaggeration to 1.0|
|CTRL+E||Lower vertical exaggeration|
|SHIFT+E||Raise vertical exaggeration|
|P||The P key enables / disables pivot axis display.|
|CTRL+SHFT+P||Enables / disables the path profile display|
|CTRL+G||Enables / disables display of GPS tracks|
|Numpad +/-||Raise/ lower water level|
|CTRL + B||Enables / disables backface culling|
|CTRL + N||Toggle display of vertex normals for meshes|
|SIFT+ N||Toggle display of face normals for meshes|
|N||Toggle normal display mode for meshes (vertex normals and face normals)|
|CTRL+C||Copy 3D view image to clipboard|
|CTRL+SHIFT+C||Copy 3D view image to clipboard without notifications|
|CTRL+Z||While digitizing or editing, undoes the last point.|
|ESC||Clear the current selection, cancel the current digitizing operation, or cancel the current measurement|
|ENTER||Complete the current digitization operation or measurement.
|DELETE||Delete the selected features.|
3D Snapping to types of Features
|P||Hold down when Selecting, Digitizing or Measuring to filter to point features|
|A||Hold down to filter to area features|
|L||Hold down to filter to line features|
|M||Hold down to filter to mesh features|
3D View Keyboard Shortcuts by function
These modes govern how you interact with objects in the view.
- Default Mode : this is the default mode. You can move around the scene, but you cannot interact with objects in the scene.
- Walk Mode : Ctrl+W to enable or disable walk mode.
- Selection Mode: this mode is for selecting one or more objects in the display. Use the ‘D’ key to go to Selection mode.
- Digitizing Mode: this mode is for creating new features. When in Selection mode, use entries on the right-click menu to create new features.
- Measure Mode: this mode is for measuring distances or areas among items in the scene. Use the ‘M’ key to go to Measure mode.
- Snap Mode: this mode governs whether selection or digitization actions are snapped to the nearest geometry vertex. Use the ‘S’ key to toggle this when not in default mode.
There are some predefined views that can help you to navigate in the 3D scene:
- Default View: This is the standard view that you get when you open the 3D viewer. Use the Home key, Ctrl+Shift+D, or the 5 key to go to default view.
- Top View: This is a view from directly above the scene. Use Ctrl+Shift+T to go to default view.
- Bottom View: This is a view from directly underneath the scene. Use Ctrl+Shift+U to go to bottom view.
- Left View: This is a view from the left side of the scene. Use Ctrl+Shift+L to go to a left view.
- Right View: This is a view from the right side of the scene. Use Ctrl+Shift+R to go to a right view.
- Front View: This is a view from in front of the scene. Use Ctrl+Shift+F to go to a front view.
- Back View: This is a view from directly behind the scene. Use Ctrl+Shift+B to go to a back view.
Sometimes it can be useful to restrict the movement of the 3D scene in one dimension or another. You can lock the movement to either a horizontal or vertical plane using the H or V keys. Note: locking is not allowed in Walk mode.
- H: The key enables horizontal locking if it’s disabled, otherwise it disables it. Horizontal locking only allows movement in a plane that’s horizontal to the pivot axis.
- V: The key enables vertical locking if it’s disabled, otherwise it disables it. Vertical locking only allows movement in the plane defined by the screen center and the pivot axis.
3D vector data is exaggerated along with the terrain so it will align correctly. A bridge going over a gorge with heights of 100m and 110m on either end would not match up with the terrain heights of 100m and 110m if both weren't exaggerated. If relative elevations of 0m and 10m are used with a vertical exaggeration set to 3, those would display at 0m and 30m which would still allow the bridge to match up to the terrain.
EXTRUDE — used to extrude 3D areas
down to the ground. If an area has the EXTRUDE attribute with a valid boolean value (YES, Y,
TRUE, T, or 1 for enabled, NO, N, FALSE, F, or 0 for disabled), that
setting will be used in place of the 3D View Options setting to extrude
3D areas down to the ground.