Selectors

Selectors are a key foundational feature of the Model Editor, enabling flexible operations on selected regions. The editor supports four selector types and four selection modes.

Selector buttons on the left toolbar

Selector Types

Sphere Select

Attaches a sphere at the cursor and selects the model content within its radius. The sphere's depth is set by the first layer of the model the view reaches.

How to use: Click "Sphere select" in the toolbar → hold the left button to select

Radius: Default 1.00. Adjust with Ctrl + scroll, base increment 0.01. Continuous scrolling accelerates automatically.

Sphere select operation

Box Selection

The only 3D selection method. Use it to precisely enclose a region in 3D space.

How to use:

1. Click "Box selection"
2. First click sets the first corner of the base
3. Second click sets the opposite corner, forming a rectangular base
4. Third click sets the height (Z axis)
5. Check the √ to confirm

Adjust: Once created, the box can be moved, rotated, stretched, reset, and confirmed.

Box select operation

Rectangle Selector

Projection-selects a region based on the current camera view.

How to use: Click "Rectangle selector" → hold the left button and drag out a box → release to complete

Also supports click-to-create: left click the start point, move, then click again for the end point.

Rectangle select operation

Camera projection: From the camera, a beam shines toward your boxed region like a flashlight; everything the beam touches is selected.

Mixed Lasso Selector

Draw a polygon on screen to projection-select the scene. Supports straight-line and lasso drawing.

Straight-line:

1. Left click to set the start point
2. Keep clicking to add vertices
3. Double-click to finish, or click the start point to close

Lasso:

1. Hold the left button and drag to trace a line along the cursor path
2. Release, then continue drawing

Either method: Right click to undo the last point

Polygon select (hybrid lasso) operation

Selection Modes

Note: While adding, holding Ctrl switches to subtract.

Depth Control (2D selectors)

Polygon select and Rectangle select support depth control, which limits how far the selection penetrates.

• Default depth: 50.00 m
• Adjust by: Ctrl + scroll / panel slider / value entry
• Click "Global" to remove the depth limit (select all depths)
• Depth patch: once a depth is set, the cursor shows a depth-range indicator in the scene

Confirm a Selection

After selecting, press Enter to confirm and create the selection. It's added to the asset list.

Model Display Modes

When a model exceeds what the current hardware can load, the editor offers two display modes to move between global positioning and fine editing.

Note: When a model is within hardware limits, the mode switch button doesn't appear and you edit at full quality directly.

How to switch

After entering Edit mode and using a selector, the mode switch button appears centered at the top of the 3D viewport.

• First use defaults to Global mode
• The system remembers your last choice and applies it next time

Save prompt when switching

If there are unsaved edits when you switch modes, the system prompts whether to save. You can save and switch, discard and switch, or cancel.

Hardware limit prompt

During editing, if the selected content exceeds the current hardware capacity, the system prompts to save. In Global mode, the system suggests switching to Local mode to continue editing.

Tips Summary

View control

• View lock: the camera locks automatically in selection mode
• Temporary unlock:
  • Alt + left drag: rotate the camera
  • Right drag: pan the view
  • Scroll: zoom the view
• Cancel selection: press Esc

Selector comparison

Shortcut reference