📚Doc

🎞Demonstration

🗨Discord

DGOneGizmo is a professional measurement, visualization, and runtime transform editing plugin for Unreal Engine 5, built for level designers, environment artists, technical artists, and technical designers.

Its core promise: see it clearly, validate it quickly, trust it confidently — even in dense production scenes.

✨ Why DGOneGizmo

📐 Instant spatial clarity

Visualize World AABB and Local Bounds side by side to compare real scene occupancy against source asset dimensions. Surface area and volume readouts are available at a glance, with configurable decimal precision and full unit support (cm / m / km / in / ft).

🧠 Readable in crowded scenes

A smart declutter pipeline — priority ordering, screen-space ring placement, and +N cluster hints — keeps on-screen readouts legible under load. Tune max visible labels, ring count, and vertical offset from a single settings panel.

🎨 Component-level color mapping

Different Primitive Components on the same Actor get stable, vivid, auto-separated colors, with matching wireframe and label colors for instant pairing.

🧭 Axis-aware visualization

RGB X / Y / Z local axes show orientation and relative extent at a glance. Options include distance-adaptive line thickness, occlusion-aware dashed rendering, arrowheads, and a soft overlay pass to stay readable through geometry.

🔎 High-contrast text readability

Semi-transparent text backgrounds, optional leader lines, panel borders, and axis-colored dimension text improve contrast over busy materials and bright environments.

⚙️ Centralized project settings

Over 100 configurable parameters — visualization, declutter, tracing, skeletal snapping, cross-section, runtime gizmo, and refresh cadence — all in one Project Settings panel.

🧩 Core Features

Bounds Visualization

• World AABB and Local Bounds overlays with dimension labels

• Multi-selection: individual bounds per object or combined outer AABB

• Surface area and volume display

• Always-on-top rendering option; soft overlay and occlusion-aware rendering styles

• Distance-adaptive line thickness; configurable max draw objects (up to 2048)

Two-Point Distance Measurement

• Temporary preview and persistent session storage

• Euclidean distance plus axis deltas (ΔX / ΔY / ΔZ)

• Skeletal mesh vertex snapping (imported vertices or CPU-skinned animated pose)

• Editor depth picking with collision trace fallback; configurable trace channel

Gap Measurement (surface-to-surface)

• Two-click workflow: select Actor A, then Actor B

• Iterative closest-point projection computes the minimum surface-to-surface distance automatically

• Configurable iteration count (4–64); works with convex and concave shapes

Angle Measurement

• Three-click workflow: first ray point → vertex → second ray point

• Arc visualization at the vertex with configurable segments and radius

• Persistent storage alongside distance and gap measurements

Cross-Section Measurement

• Three plane definition modes: Two-Click Midpoint Normal, Click + Camera Normal, Interactive Plane Widget

• Closed contour loop extraction from StaticMesh and SkeletalMesh geometry

• Cross-sectional area computation (cm²) with on-screen text overlay

• Engineering-style hatching: configurable spacing, angle, and cross-hatch option

• Translucent plane disc visualization; skinned vertex support for animated skeletal meshes

Measurement Export

• CSV and JSON export with configurable decimal places and unit

• DataTable asset export (editor)

• Optional surface normal inclusion per measurement point

Unified Eraser

• Click-to-erase nearest measurement of any type (distance, gap, angle, cross-section)

• Configurable pick tolerance; Clear All function

Blueprint Bounds Helpers

• Per-object bounds query and combined bounds for multiple objects

• Surface area and volume from bounds data

• Unit conversion utilities; actor scale-to-target-size helpers

• Cross-section computation and contour queries fully exposed to Blueprints

Runtime Transform Editing

• Translate, Rotate, and Scale gizmos with X-ray foreground rendering

• Axis and plane constraints; configurable handle sizes and hit radii

• Pivot modes: Actor Origin, Component Bounds Center, Instance Center

• Instanced Static Mesh support with per-instance transform editing

• ADGOneRuntimeGizmoGameMode + ADGOneRuntimeGizmoPlayerController + ADGOneRuntimeGizmoPawn ready-to-use setup

Undo / Redo

• Per-player transform history with configurable depth (up to 256 steps)

• Ctrl+Z / Ctrl+Y (rebindable); full Blueprint API (CanUndo, CanRedo, GetDepth, Undo, Redo, Clear)

• Event delegates: OnUndoExecuted, OnRedoExecuted, OnUndoHistoryCleared

Multiplayer Support

• Server-validated transform RPCs with replicated actor whitelist (ADGOneRuntimeEditAuthorityActor)

• Per-player undo/redo history; move-rate throttling and scale magnitude clamping

• Client correction on authority mismatch

Editor Toolbar & Hotkeys

• Dropdown menu: visualization toggle, persistent measure, eraser, gap, angle, cross-section, clear all, Set Size dialog

• 13 fully rebindable keyboard shortcuts from Project Settings

🎯 Ideal Use Cases

• Clearance and traversal validation in level design

• Modular asset size consistency checks across a scene

• Scene dressing and scale calibration with immediate spatial feedback

• Cross-section analysis for industrial visualization, digital twin, and previs workflows

• Quick in-viewport distance and angle checks without leaving the level editing context

• Runtime scene editing and spatial annotation in shipped products