Select: Toggles select mode on and off. Use select mode to select objects in the scene.

To modify the landscape, choose one of the brushes listed below and set the brush properties. A green circle will be displayed when the cursor is moved over the scene. This describes the area that will be modified. Click and hold the left mouse button and then move the mouse to modify the terrain, similar to using a paint program.

There are several tools to aid in modifying the landscape. Based on system settings, one of two sets of terrain editing tools are available:

Basic Tools:

Basic Brushes:

• Raise: This brush will raise the terrain around the cursor.
• Lower: This brush will lower the terrain around the cursor.
• Level: This brush will level the terrain to the height of the terrain that was under the cursor when the left mouse button was clicked. This brush has a "plateau" effect on the terrain.
• Erase: This brush will move the terrain towards the original height. E.g., if the terrain around the cursor is above the original height, it will move down. The terrain will not move after it reaches the original height.

Basic Brush Properties: There are two brush properties which can be set.

• Radius: This property affects how much terrain is edited when the mouse is moved.
• Magnitude: This property affects how quickly the terrain is altered when the mouse is moved.

Advanced tools:

Advanced Brushes:

• Modify: This brush is used to set a selection of the terrain to a specified elevation.
• Smooth: This brush will smooth a selection of terrain with varying elevations.
• Slope: This brush is used to create a section of sloping terrain.
• Paint: This brush will apply new textures over the terrain.

Advanced Brush Properties: There are several properties that can be used for the terrain brushes. Not all properties are available for all brushes.

• Elevation (Modify, Slope): This is the elevation to set or modify the terrain to. Zero is the default elevation for all terrain.
• Freehand (Modify, Smooth, Paint): Terrain modification is done in freehand style by moving the mouse over the terrain to be modified while holding the left mouse button.
• Area (Modify, Smooth, Paint): Terrain modifaction is done by highlighting a region of the terrain with the mouse.
• Round Brush (Modify, Smooth, Paint): The affected region is a circle for Freehand brushes or elliptical for Area brushes.
• Square Brush (Modify, Smooth, Paint): The affected region is a square for Freehand brushes or rectangular for Area brushes.
• Brush Size (Freehand brushes): The diameter or width of a Freehand brush.
• Softness (Modify): How smooth or rough the edges of a selection are. A softer brush will
• Texture (Paint): The texture to apply to the terrain.
• Opacity (Paint): How opaque or transparent the texture will be applied.

Measure: This tool is used to measure distance between two points on the scene.