The 'Tree Window' property bar controls various rendering and viewport states.

When enabled, OpenGL shaders will be used to render the tree. When disabled, a fixed-function pipeline is used instead (which may be necessary for older graphics cards). (Boolean)

• Best available (A2C if possible): If your graphics card capabilities and settings are such that alpha to coverage and multisampling are available, alpha to coverage will be used for transparency (see Edit→Preferences→Rendering to enable multisampling). Otherwise, alpha testing is used. (Enumeration)

• Alpha test only: Alpha testing is used for transparency. (Enumeration)

• Blending only: Blending is used for transparency. The geometry is not sorted so this setting will typically result in many value errors related to alpha blending and the depth buffer. (Enumeration)

• Alpha test and blending: Both alpha testing and blending are used. This reduces the errors from “blending only” but does not eliminate them. (Enumeration)

• None: All geometry is opaque. (Enumeration)

Only geometry with alpha values greater than this number will be rendered when alpha testing is enabled. (Percentage)

Upon selection, the selected objects are depicted in the Tree Window with the following style:

• Highlight: Draws selected generators and node edits in a “highlighted” color. This method is the slowest of these styles to redraw, which may have a computational impact on high-detail trees. (Enumeration)

• Outline: Draws an outline around each selected generator, object, and node edit. This method may slow down navigation in the Tree Window with high detail trees. (Enumeration)

• Wireframe: Draws an overlay of the wireframe on top of each selected generator, object, and node edit. (Enumeration)

• Frame: Draws the frame of each selected generator, object, and node edit. (Enumeration)

• Box: Draws a bounding box around each selected generator, object, and node edit. (Enumeration)

The amount of oversampling used for anisotropic filtering. (Percentage)

Enabling this option causes tree rendering to be slower, but use far less memory on the graphics card. This option should only be used on high polygon tree models or when the SpeedTree Modeler is used concurrently with other graphics applications. (Boolean)

Controls how large force icons appear in the 'Tree Window'. (Float)

Units used for the minimum allowed distance between control points. (Enumeration)

• Relative: Space between control points is a percentage of the parent branch's length set with the 'Relative Spacing' property value.

• Absolute: Space between control points is a real-world unit size set with the 'Absolute Spacing' property value.

The minimum distance (relative to the parent branch's length) allowed between control points. (Float)

The minimum distance (as a real-world unit) allowed between control points. (Float)

The width and height (in pixels) of the depth shadow. (Integer)

How far geometry is offset from itself when rendering into the depth shadow (increase this value to reduce shadow acne at the expense of shadows separating from their casters). (Float)

The opacity of the ground shadow. Higher numbers result in a darker ground shadow. (Percentage)

• None - Objects in the scene cannot be manipulated. (Enumeration)

• Translate - Objects in the scene can be translated by using the manipulator. This does not include any part of the tree model itself. Use node editing to move individual nodes based on their properties. (Enumeration)

• Rotate - Objects in the scene can be rotated by using the manipulator. This does not include any part of the tree model itself. Use node editing to move individual nodes based on their properties. (Enumeration)

• Scale - Objects in the scene can be scaled by using the manipulator. This does not include any part of the tree model itself. Use node editing to move individual nodes based on their properties. (Enumeration)

• Global - Manipulation is relative to the world coordinate system. (Enumeration)

• Parent - Manipulation is relative to the parent object's coordinate system (currently the same as global). (Enumeration)

• Local - Manipulation is relative to the selected object's coordinate system. (Enumeration)

Scales the size of manipulators in the 'Tree Window'. (Enumeration)

When enabled, a manipulator object is overlayed on top of selected nodes for quick edits to common properties. (Boolean)

Near and far clipping planes are calculated based on scene extents. Use this value to scale the computed near clipping plane value. (Float)

Near and far clipping planes are calculated based on scene extents. Use this value to scale the computed far clipping plane value. (Float)

The percentage between the near and far clipping plane where fog will begin. '1' = no fog, '-1' = always fogged, '0' = linear. (Percentage)

An exponent for the fog decay. Lower numbers will pull the fog toward the camera, and higher values will force the fog transition out further. (Float)

• One - Show a single view of the scene in the 'Tree Window'. (Enumeration)

• Four - Show all four views of the scene. (Enumeration)

• Two (over under) - Show two views of the scene, one on top of the other. (Enumeration)

• Two (side by side) - Show two views of the scene, one beside the other. (Enumeration)

An external 'FBX' file that contains cameras to be used in the tree window. Any cameras found in this file will be added as an entry in the “current window” pulldown. Animation of the camera can be previewed using the 'Timeline' bar. (File)

An image file on disk to display as the background of each viewport window. The way the image is displays is controlled by the 'background image style' property. (File)

• Full Frame: The background image will take up the entire frame, and portions of the image may not be visible since the image is fit to the shorter dimension. (Enumeration)

• Letterbox: The background image will be completely visible (fit to the longer dimension) with “letterboxing” visible outside of the shorter dimension. (Enumeration)

• Stretch: The background image will be stretched to take up the entire frame, without regard to its original aspect ratio. (Enumeration)

• Disabled: The background image will not be visible. (Enumeration)

Color of the background. (RGBA)

Color of the grid lines. (RGBA)

Color of the “scribed” rendering effect in the 'tree window'. Semi-transparent colors can be used for less obtrusive lines. (RGBA)

Toggles the text information overlaid in the 'Tree Window'. (Boolean)

Toggles the visibility of the light (it is always on). (Boolean)

Toggles the visibility of the fan. (Boolean)

Toggles the visibility of the height indicator. (Boolean)

Toggles the visibility of the axis indicator in the tree window. (Boolean)

Toggles the visibility of the ground plane. The ground plane can receive shadows, and will cut through any geometry going below zero. (Boolean)

Toggles display of the grid on the ground plane. (Boolean)

Sets the distance between grid lines. (Integer)

Restores all viewport properties to their default values. (Function)

Renders a red box in the tree window depicting the region that “Export tree image…” and “Export material…” will use when executed. (Boolean)

The width used when computing the aspect ratio of the safe frame (the actual width of the screenshot is determined on the export dialog). (Float)

The height used when computing the aspect ratio of the safe frame (the actual height of the screenshot is determined on the export dialog). (Float)

Check for OpenGL Errors…: Query and report OpenGL errors each time the scene is drawn. (Boolean)

When checked, anything rendered as a leaf will be subject to hue, saturation, value, and normal modification subject to the properties below. (Boolean)

The random seed used to control color variation. Change this to change the variation pattern. (Integer)

Sets the amount of hue variation on each leaf. (Float)

Sets the amount of saturation variation on each leaf. (Float)

Sets the amount of value variation on each leaf. (Float)

Sets the likelihood that an individual leaf will undergo variation of any kind. Use this property to control how many leaves actually change. (Float)

This amount will be added to the hue of every leaf. (Float)

This amount will be added to the saturation of every leaf. (Float)

This amount will be added to the value of every leaf. (Float)

The normals on every leaf will be exaggerated by this amount. Each leaf is treated as whole. Use this property to create normal maps where the entire leaf appears to be rotated and facing a different direction. This technique helps create normal maps that look less uniformly lit. To visualize the effect switch to “Normal map” rendering mode. As you adjust this property, you can see the effect on the resulting normal map. (Float)

• Standard: Orbit the view by dragging the pointer with the left mouse button down. Pan by dragging with the middle mouse button down. Zoom using the wheel or dragging with both the left and right mouse buttons down. The up vector is always maintained in this mode. (Enumeration)

• Trackball: Same as standard, without the up vector restriction. (Enumeration)

• Traveller: Navigate the scene in a more first person style. Left button dragging equals walk forwards (up), backwards (down), and rotating (left to right). Middle button dragging equals panning. Left and middle dragging equals free look. (Enumeration)

Scales all navigation movement (panning, walking, zooming). (Float)

Scales all navigation rotating (looking). (Percentage)

How many units are covered by the grid in perspective projections. (Float)

The field of view of the viewer. (Float)