ÖR / PhysicalMassCG [Blender Addon]
ÖR / PhysicalMassCG [Blender Addon]
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PhysicalMass CG: Real-Time Parametric CG Analysis for Blender
Stop guessing and start engineering. PhysicalMassCG is the professional-grade Blender addon that brings high-performance, real-time mass distribution and Center of Gravity (CG) analysis directly into your 3D workflow. Whether you are designing complex mechanical assemblies, sci-fi vehicles, or 3D-printable prototypes, PhysicalMassCG eliminates the friction of manual calculations, giving you engineering-grade physical data instantly.
Why Choose PhysicalMassCG?
⚡ True Real-Time Engineering: Forget static readouts. Move a part, change a material, or play an animation and watch your CG marker evolve instantly. It’s the interactive, physics-driven workflow professional modelers have been waiting for.
🎯 Precision CG Mapping: Built on a hardened geometry engine that calculates volume and weighted mass distribution for complex hierarchies. No more "eyeballing" the balance point—get mathematically perfect results in every frame.
🛠️ Advanced Material Logic: Drive your mass analysis through real-world density (g/cm^3). Assign densities to materials and watch the addon derive the exact weight of your entire system based on actual 3D volume.
⚙️ Stable, Crash-Proof Engine: Featuring a proprietary "Heartbeat" and Geometry Hashing architecture. PhysicalMassCG is designed to run alongside heavy environmental addons without the memory loops or viewport freezes common in traditional update listeners.
Key Features & Tools
| Feature | Description |
| Dynamic CG Marker | A real-time 3D sphere that tracks the weighted physical center of all targeted collections. |
| Safety Envelope | Define a spatial bounding zone with live OK / OUT OF RANGE status monitoring. |
| Selection Inspector | View specific mass, tonnage, and volume data for individual objects upon selection. |
| Additive Target List | Add, toggle, and reorder multiple collections for aggregate system analysis. |
| Timeline Support | Fully tracks mass shifts during playback—ideal for moving parts and mechanical rigs. |
| Technical Export | Generate timestamped .txt reports with full material and component breakdowns. |
Built for Every Workflow
Mechanical Engineers: Rapidly calculate system balance and weight distribution for industrial prototypes.
Concept Artists: Design realistic ships and sci-fi tech with authentic physical centers of mass.
3D Print Designers: Estimate final material weight and volume requirements before exporting.
VFX & Riggers: Visualize mass shifts during complex animations to ensure realistic motion behavior.
Technical Specifications
Compatibility: Blender 3.0, 4.0, 5.0 and newer.
Current Version: v1.0.0 (Stable Release).
Updates: Purchase once, get all future updates forever free.
Support: Fully integrated into the Blender N-Panel with a native, intuitive feel.
'SAFETY BOUNDING BOX'
You can define an "EMPTY BOX" to envelope the collection of OBJECTS in which their CENTER of GRAVITY (CG) is computed from and if the objects shift, rotate, or change material density, the system dynamically monitors whether the resulting global CG remains within this defined safety zone.
Should the balance point exceed these boundaries, the interface triggers an immediate 'OUT OF RANGE' alert, providing critical visual and numerical feedback to ensure the physical stability of your assembly throughout its entire animation or design cycle."
Detailed Breakdown of the 'SAFETY BOUNDING BOX'
Dynamic Monitoring: The box isn't just a static guide; it is a live sensor. As you manipulate your objects or play an animation, the add-on recalculates the relationship between the CG Marker and the Safety Envelope every single frame.
Visual & UI Feedback:
Status: OK (Green) indicates the weighted center is safe.
Status: OUT OF RANGE (Red) indicates a potential tipping point or structural imbalance.
Engineering Thresholds: The engine uses the Local Coordinates of the Empty box. This means you can scale, rotate, or move the box itself, and the "Safety Zone" will adapt its volume accordingly, only triggering a warning if the CG exceeds the relative bounds of the box's geometry.
Organization: Using the Auto-Sort feature, the bounding box is automatically moved into the SAFEZONE helper collection, ensuring it provides oversight without cluttering your main scene outliner.
The ÖR / Physical Mass & CG addon performs real-time volumetric analysis of mesh objects within targeted collections to determine their physical properties. The calculation process involves several key technical steps:
Volumetric Evaluation: The engine calculates the exact volume of each object in cubic meters (m^3) by analyzing the mesh geometry. It uses the evaluated version of the scene to account for active modifiers and world-space transformations, such as scaling and rotation.
Material-Based Mass Calculation: To determine mass, the addon multiplies the calculated volume by the specific density value (g/cm^3) assigned to the object's active material.
Real-Time Data Output: The total system results are displayed instantly in the interface as total mass in kilograms (kg) and tonnes (t), along with the total system volume (m^3).
Animation and Modifier Support: Because the addon hooks into Blender's native update handlers, mass and volume data are recalculated every frame. This ensures that the Center of Gravity and weight totals correctly track shifts caused by keyframed animations or parent-child constraints.
Geometric Safety: The calculation engine uses absolute values to ensure volume and mass remain accurate even if meshes have inverted normals.
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Stability Update: Now includes a Lightning-Fast Geometry Hash Filter! Work with heavy procedural sky or atmosphere addons without risking crashes or performance dips.
Workflow Update: Added a "Nuclear" Hard Reset for clean project states and automated "Ghost-Pointer" cleanup to remove dead collections instantly.
Animation Update: Features Live Timeline Tracking and Evaluated Matrix Math to accurately calculate Center of Gravity shifts during complex animations, physics simulations, and parent-child hierarchy movements.
Parametric & Unit Update: The engine now tracks procedural bounding box changes (perfect for Geometry Nodes) and automatically converts all UI and exported data between Metric and Imperial unit systems.
v.1.0.1 ▹ Mode Tracking Update: The engine now actively monitors Blender's workspace states. Modifying your mesh volume in Sculpt or Edit mode will automatically trigger a complete mass and Center of Gravity recalculation the moment you return to Object Mode.
About NÖRGRU™
NÖRGRU is a European startup dedicated to high-quality 3D tools and industrial-grade products. We believe in creativity as a solution to human struggle—designing the future, one vertex at a time.
Discover the future at norgru.eu
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