Bounding Box Anatomy & Handles

Selecting a structural block triggers a multi-layered visual feedback system:

• Selection Highlight: The entire targeted block is washed with a translucent pink tint to immediately isolate it from adjacent elements.
• Bounding Frame: A high-visibility yellow outer wireframe wraps around the absolute boundaries of the mesh, defining its precise geometric volume.
• Interactive Handles (Gizmos): Bright purple spherical nodes generate contextually at the vertices and face centers of the selected object. These serve as the physical grab points for translation (moving) and non-uniform scaling (stretching/resizing) operations.

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Spatial Alignment Guides

To assist with tracking across long sightlines, the 3D Gizmo projects a solid yellow orientation line along the base of the selected element. This line maps directly onto the active horizontal grid, allowing designers to visually align flush wall corridors or verify parallel alignments across the level without shifting camera angles.

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Gizmo Visibility Modes

Expanding the menu icon in the upper-left corner of the viewport exposes the contextual options menu. The Gizmos toggle allows users to strip away design noise on the fly depending on the current task:

• Gizmos ON (Bottom Image) : The default editing state. Displays the full suite of interactive elements—including the purple handles, yellow wireframe outlines, and base projection lines. This mode is mandatory for active manipulation and metric verification.
• Gizmos OFF (Top Image) : Hides all wireframes, handles, and projection guides entirely. The selected block retains only its soft pink hue overlay. This allows designers to visually assess geometric continuity, textures, and unclouded sightlines without any UI clutter.

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