Blender Workflow - Creating 3D Meshes

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Overview

Blender is where your 2D splines become 3D course meshes. You'll use the OPCD Blender tools to conform your splined shapes to your terrain, create bunker depressions, water bodies, and place 3D objects like bridges and bulkheads.

The Clender (automated Blender processing service) does much of the heavy lifting, but you'll need to understand Blender to fine-tune and enhance your course.

1. Blender Introduction

Blender Introduction (V4)

📺 Blender Introduction(V4)

Overview of Blender's role in the course building workflow.

Blender's Role:

Convert 2D splines to 3D meshes
Conform meshes to terrain elevation
Create bunker and water depressions
Place 3D objects (bridges, bulkheads, etc.)
Export FBX files for Unity

2. Installing Blender

Installing Blender 4.0.2

📺 Installing Blender 4.0.2

Install the specific Blender version compatible with OPCD tools.

Required Version: Blender 4.0.2 (or 4.0.x series)

Why this version?

OPCD add-ons are tested with Blender 4.0.x
Newer versions may have compatibility issues
Free and open-source

Installing Blender Add-ons

📺 Installing Blender Add-ons

Install the OPCD Blender add-ons that provide golf course-specific tools.

OPCD Add-ons Include:

Mesh conforming tools
Bunker creation tools
Water plane generators
Object placement helpers
Export presets for Unity

3. Optional Blender Training

If you're completely new to Blender, these tutorials will help you understand the basics.

Blender 4.0 Tutorial (Optional Blender Training)

📺 Blender 4.0 Tutorial

Comprehensive Blender tutorial series. You don't need to watch all of it - just enough to understand navigation and basic mesh editing.

Useful Topics:

Interface overview (first 15 minutes)
Navigation (viewport movement)
Selecting and moving objects
Basic mesh editing

4. Blender Workflow Overview

Blender Workflow Overview (V4)

📺 Blender - Blender Workflow Overview (V4)

Understanding the complete Inkscape → Clender → Blender → Unity workflow.

Workflow Steps:

Export SVG from Inkscape
Submit SVG to Clender
Clender processes and returns Blend file
Open Blend file in Blender
Import terrain OBJ
Conform meshes to terrain
Use OPCD tools for bunkers, water, objects
Export FBX files for Unity

5. Submitting to the Clender

Prepping and Exporting Inkscape (V4)

📺 Blender - Prepping and Exporting Inkscape (V4)

Final Inkscape preparations before Clender submission.

Pre-Submission Checklist:

All shapes are closed paths
Correct colors assigned
No overlapping shapes of same color
Proper layer organization
Save as Inkscape SVG (not plain SVG)

Submitting Your SVG to the Clender

📺 Blender - Submitting Your SVG to the Clender

Submit your Inkscape SVG to the automated Clender processing service.

Clender Process:

Upload SVG file
Clender converts shapes to 3D meshes
Applies initial materials
Creates blend zones
Returns downloadable Blend file (usually 10-30 minutes)

Following Your Progress Through the Clender

📺 Blender - Following Your Progress Through the Clender

Monitor your Clender job and understand the processing stages.

Processing Stages:

Queued
Processing SVG
Creating meshes
Applying materials
Complete (download ready)

Fixing Pre-Cut Errors

📺 Blender - Fixing Pre-Cut Errors

Troubleshooting errors that occur during Clender processing.

Common Errors:

Shape validation failed (unclosed paths)
Color not recognized
Overlapping geometry
Invalid SVG structure

Verifying Your Returned Blend Files (V4)

📺 Blender - Verifying Your Returned Blend Files (V4)

Open and inspect your Blend file to ensure everything processed correctly.

What to Verify:

All shapes converted to meshes
Materials applied correctly
Blend zones created
No missing features

6. OPCD Blender Tools

Intro to OPCD Blender Tools (V4)

📺 Blender - Intro to OPCD Blender Tools (V4)

Overview of the custom OPCD tools available in the Blender add-on.

OPCD Tool Categories:

Conform Tools: Drape meshes onto terrain
Bunker Tools: Create realistic bunker depressions
Water Tools: Generate water bases and planes
Object Placement: Position bridges, bulkheads, rocks, etc.

7. Importing and Conforming Terrain

Importing Your Terrain OBJ and Conforming Your Meshes (V4)

📺 Blender - Importing Your Terrain OBJ and Conforming Your Meshes (V4)

Import your Unity terrain (exported as OBJ) into Blender and conform your course meshes to it.

Conforming Process:

Import terrain OBJ file
Select course mesh (tees, greens, fairways, etc.)
Use OPCD Conform tool
Mesh vertices snap to terrain elevation
Creates accurate 3D representation

Why Conforming Matters:

Meshes must follow terrain contours
Prevents floating or buried geometry
Ensures proper playability

Importing Your Outer Terrain and Creating Outer Mesh (V4)

📺 Blender - Importing Your Outer Terrain and Creating Outer Mesh (V4)

Import and conform your outer (plot) terrain.

Outer Terrain:

Lower detail than inner course
Provides visual context
Fills the horizon

8. Materials and Vertex Painting Concepts

Blend, Material, Vertex Painting Concepts (V4)

📺 Blender - Blend, Material, Vertex Painting Concepts (V4)

Understanding how materials and vertex colors work together.

Key Concepts:

Materials: Define surface appearance (grass types, sand, etc.)
Vertex Colors: Paint material variations across a mesh
Blends: Smooth transitions between materials
MAHS Shader: Multi-Array Height Shader (Unity)

Workflow:

Meshes have base materials assigned by Clender
Use vertex painting to add variation
Export vertex color data with FBX
Unity MAHS shader reads vertex colors to apply materials

9. OPCD Bunker Tools

OPCD Bunker Tools (V4)

📺 Blender: OPCD Bunker Tools (V4)

Create realistic bunker depressions that dig into the terrain.

Bunker Tool Features:

Automatic terrain cutting
Sand base creation
Lip/edge generation
Depth control

Bunker Workflow:

Select bunker mesh
Run OPCD Bunker tool
Adjust depth and lip width
Tool cuts terrain and creates sand base
Generates smooth transitions

Best Practices:

Typical bunker depth: 0.3 - 1.0 meters
Lip width: 0.5 - 2.0 meters
Greenside bunkers: shallower, tighter lips
Fairway bunkers: can be deeper

10. Water Features

OPCD Water Bases (V4)

📺 Blender: OPCD Water Bases (V4)

Create the terrain depression for water bodies.

Water Base Workflow:

Select water boundary mesh
Run OPCD Water Base tool
Cuts terrain to water level
Creates sloped banks or vertical edges
Generates bottom mesh

Water Level:

Set consistent water elevation
Usually matches lowest edge of water boundary
Will place water plane at this height later

OPCD Water Planes (V4)

📺 Blender: OPCD Water Planes (V4)

Generate the water surface plane with proper material.

Water Plane Features:

Flat plane at specified elevation
Matches water boundary shape
Water material with reflection/refraction
Transparency and color controls

11. Object Placement

OPCD Object Placement - Bulkheads (V4)

📺 Blender: OPCD Object Placement - Bulkheads (V4)

Place bulkheads (retaining walls) around water hazards.

Bulkhead Uses:

Retain water edges
Decorative elements
Realistic lake/pond details
Prevent unrealistic slopes

OPCD Object Placement - Bridges (V4)

📺 Blender: OPCD Object Placement - Bridges (V4)

Place bridges over water or ravines.

Bridge Placement:

Select bridge model from OPCD library
Position over crossing point
Rotate and scale to fit
Conform to terrain at ends

OPCD Object Placement - Everything Else! (V4)

📺 Blender OPCD Object Placement - Everything Else! (V4)

Place additional 3D objects: rocks, benches, ball washers, trash cans, etc.

Available Objects:

Decorative rocks and boulders
Course furniture (benches, trash cans)
Yardage markers
Tee markers
Flagsticks (placed later in Unity)

12. Exporting for Unity

Saving Blend File and Exporting Your Meshes to FBX (V4)

📺 Blender - Saving Blend File and Exporting Your Meshes to FBX (V4)

Export your finished course meshes as FBX files for Unity import.

Export Settings:

FBX 7.4 Binary format
Include vertex colors
Apply modifiers
Correct scale and orientation
Separate files or combined (your choice)

Export Organization:

MyCourseFBX/
├── inner_course.fbx (main course meshes)
├── outer_plot.fbx (outer terrain)
├── water_planes.fbx
└── objects.fbx (bridges, bulkheads, etc.)

Critical Settings:

Path Mode: Copy (embeds textures)
Apply Scalings: FBX All
Forward: -Z Forward
Up: Y Up
Export vertex colors: Enabled

13. Making Changes

Making Changes to Meshes (V4)

📺 Blender - Making Changes to Meshes (V4)

How to revise and update your meshes after initial export.

Change Workflow:

Edit shapes in Inkscape
Resubmit to Clender (or edit Blend file directly)
Re-conform to terrain if needed
Re-export FBX
Replace in Unity

When to Make Changes:

Bunker shapes need adjustment
Fairway edges refined
New features added
Fixing overlaps or gaps

✅ Checklist Before Moving Forward

Installed Blender 4.0.2
Installed OPCD Blender add-ons
Submitted SVG to Clender successfully
Downloaded and verified Blend file
Imported terrain OBJ into Blender
Conformed all course meshes to terrain
Created bunker depressions with OPCD tools
Created water bases and planes
Placed objects (bridges, bulkheads, etc.)
Exported FBX files for Unity
Saved Blend file for future edits

Common Issues and Solutions

Problem: Meshes not conforming to terrain correctly
Solution: Ensure terrain OBJ is in same coordinate space; check scale; try re-exporting from Unity

Problem: Bunker tool creates weird geometry
Solution: Simplify bunker shape in Inkscape; check for overlapping edges; adjust depth parameter

Problem: Water plane not showing in Unity
Solution: Verify water plane has correct material assigned; check elevation matches water base

Problem: FBX export loses vertex colors
Solution: Ensure "Export Vertex Colors" is enabled in FBX export settings

Problem: Objects floating or buried in Unity
Solution: Re-conform objects to terrain in Blender; check Y-axis orientation

Time Expectations

Blender Phase Typical Time:

First time through (learning): 10-15 hours
Subsequent courses: 4-8 hours
Per-hole revisions: 15-30 minutes

What Takes Time:

Learning Blender interface (first time)
Fine-tuning bunker depths
Placing objects precisely
Vertex painting details (optional advanced work)

What's Next?

Your course meshes are ready for Unity! In the next section, you'll import your FBX files, apply materials, and start seeing your course come to life in 3D.

Next Guide: Unity Setup & Materials →

Navigation:
← Back: Inkscape Splining | Next: Unity Setup →