v1.0.0 - Initial Release: Smart Measure & Multi-Body Assembly Tree

QuickLook.Plugin.StepViewer v1.0.0 🚀

High-performance QuickLook plugin for instant 3D CAD preview of STEP / STP files in Windows Explorer.

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✨ Highlights & Key Features:

• ⚡ Spacebar Instant CAD Inspection: Zero wait time, zero software bloat. Tap Spacebar on any .step or .stp file in Windows Explorer for a silky-smooth, 60 FPS 3D CAD inspection window.
• 📐 Smart CAD Measure Tool (M key):
  • Intelligent Geometric Snapping: Instantly snaps to vertices, edge midpoints, and circular hole centers.
  • Direct Feature Dimensions: Hover or click to read linear edge lengths, circular hole diameters ($\varnothing$) / radii ($R$), and planar face surface areas.
  • 3D Delta Distance: Click any two points, edges, or hole centers to inspect Euclidean 3D distance and Cartesian $(\Delta X, \Delta Y, \Delta Z)$ components with automatic leader dimension lines.
  • Dual Units: Live one-touch toggle between Metric ($\text{mm}, \text{mm}^2, \text{cm}^3$) and Imperial ($\text{in}, \text{in}^2, \text{in}^3$) via the U key.
• 🌳 Model Tree & Multi-Body Assembly Panel (T key):
  • Explore individual solid bodies and underlying B-Rep topological faces.
  • Interactive 3D Hover & Focus: Hover over any body in the tree to light it up in the viewport; click to smoothly animate camera zoom and focus on it.
  • Isolate Mode (I): Solo inspection of complex internal parts in multi-body models.
  • Ghost / X-Ray Mode (G): Semi-transparent silhouette mode to see inside assemblies without hiding geometry.
  • Body Visibility (V): Toggle individual solid bodies on and off.
• 🔬 SolidWorks-Grade HLR Edge Rendering:
  • Clean, crisp mechanical crease outlines matching professional engineering CAD software.
  • Tangent Blend Suppression: Automatically eliminates distracting mesh seams and circular blend lines on fillets.
  • Parametric Seam Elimination: No stray discretization lines on spherical domes or cylindrical faces.
• ⚖️ Mass Properties & Material Calculator (P key):
  • Calculates real CAD volume and surface area.
  • Live weight calculation with built-in material density presets: Structural Steel, 6061 Aluminum, Brass, Grade 5 Titanium, ABS Plastic, Delrin (POM), and Acrylic.
• 🎨 Studio Graphite Dark Aesthetic: Premium dark glassmorphic interface designed for mechanical engineers and 3D designers.

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📥 Quick Installation:

1. Download QuickLook.Plugin.StepViewer.qlplugin below.
2. In Windows Explorer, select the downloaded .qlplugin file and press Spacebar.
3. QuickLook will automatically prompt to install. Click Install.
4. Restart QuickLook.