orthographic-registration

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Register front, side, back, and top orthographic reference views into a shared Blender coordinate contract. Use when a 3D model must match multi-view wireframes/templates, when side/back/top silhouettes are off, or before adding depth to a front-locked contour model.

4installs

Sourceroble3/cc-blender-skill

Added on2026-08-23

NPX Install

npx skill4agent add roble3/cc-blender-skill orthographic-registration

SKILL.md Content

View Translation Comparison →

Orthographic Registration

This skill prevents the common failure where the front view looks plausible but the side/back/top views are wrong.

Coordinate contract

Front view defines
```
X/Z
```
silhouette.
Side view defines
```
Y/Z
```
depth envelope.
Top view defines
```
X/Y
```
spread.
Back view defines rear silhouette/material only; it must not rewrite the front silhouette.

Workflow

Run
```
scripts/register_views.py
```
on the available view images.
Create orthographic reference planes/image empties with a single shared scale.
Align centerline and bbox centers before modeling.
Lock front X/Z boundary vertices.
Add Y depth from side/top envelopes using modifiers/displacement or vertex groups.
Validate all four cameras before export.

Failure policy

If views disagree, front brand read wins. Document the conflict in

registration_report.json

.

Front-plane rotation rule

In this Blender coordinate convention, the front camera looks along the Y axis and the reference silhouette lives in the X/Z plane. Therefore 2D rotations inside the front view are rotations around the Y axis, not around Z. Use

rotation_euler = (0, angle, 0)

for 2D component orientation in the front projection. Z rotation spins objects into/out of screen-space incorrectly for X/Z-plane meshes.

Sources distilled

Blender Image Empty/reference image controls for orthographic blueprints.
OpenCV homography/alignment and geometric transforms for view registration.