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3D Morph PPT - extends morph-ppt with GLB model insertion, cinematographic camera, model-content layout, and enriched visual design system.
Morph PPT - 3D Extension
This skill extendsmorph-ppt. All morph-ppt rules (naming, ghosting, design, verification) apply in full.
This file covers 3D-specific additions and an enriched design system combining morph-ppt aesthetics with concrete color palettes, font pairings, and layout quality guardrails.
Runtime contract
Wayland Desktop supplies a checksum-pinned native officecli runtime. Do not install, update, download, or replace it from this skill. Native authoring requires the exact verified 1.0.136 version. If officecli --version or the required officecli --help surface fails, stop and use Wayland's reinstall/update recovery path; never bootstrap mutable code or silently switch to hosted-credit generation.
Use when
User wants a .pptx with a .glb 3D model and Morph transitions.
3D Model Compatibility Gate (before generation)
Only .glb is supported. If user provides .fbx / .obj / .blend / .usdz / .gltf, ask them to convert to .glb first (e.g. via Blender export).
If user has no model, follow the Model Discovery Flow below.
All files (.glb, .pptx, build script) must be in the same working directory.
Model Discovery Flow (when user has no model)
When the user gives a topic but no file, instead of just listing websites.
.glb
proactively help them find a matching model
Step 1: Understand the topic and suggest model direction
Based on the user's topic, suggest what kind of 3D model would work:
Topic type
Model suggestion
Example
Product/brand
The actual product or a similar one
"coffee brand" → coffee cup, coffee machine, bean
Animal/character
The animal or mascot
"fox mascot" → fox 3D model
Architecture/space
Building, room, or structure
"new office" → office building, interior
Vehicle/transport
The vehicle itself
"EV launch" → car, motorcycle, bicycle
Food/cooking
The dish or ingredient
"Japanese food" → sushi platter, ramen bowl
Tech/gadget
The device
"phone launch" → phone, tablet, laptop
Nature/science
The subject
"solar system" → planet, sun, earth
Abstract concept
A symbolic object
"teamwork" → puzzle pieces, gears, bridge
Tell the user: "Your topic is [X]. I suggest using a 3D model of [description]. Here are some free sources to find one:"
Step 2: Search for models (agent-driven)
Proactively search for models on behalf of the user. Don't just list websites - actually find candidates.
Search strategy (try in order):
Web search for free GLB models matching the topic:
Search: "[topic keyword] 3d model glb free download"
Example: "fox 3d model glb free download"
Sketchfab API (no auth needed for search):
curl -s "https://api.sketchfab.com/v3/search?type=models&q=[keyword]&downloadable=true&archives_flavours=glb" \
| python3 -c "
import json, sys
data = json.load(sys.stdin)
for m in data.get('results', [])[:5]:
print(f\"Name: {m['name']}\")
print(f\"URL: https://sketchfab.com/3d-models/{m['slug']}-{m['uid']}\")
print(f\"Likes: {m.get('likeCount', 0)}, License: {m.get('license', {}).get('label', 'unknown')}\")
print()
"
Khronos glTF-Sample-Assets (guaranteed to work, always available):
# Direct download - no auth, no API, always works
curl -L -o model.glb "https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/[ModelName]/glTF-Binary/[ModelName].glb"
Available models: Duck, Fox, Avocado, BrainStem, CesiumMan, DamagedHelmet, FlightHelmet, Lantern, Suzanne, WaterBottle, etc.
Step 3: Present candidates to user for confirmation
Show the user 2-3 model options with:
Model name and source
Preview link (Sketchfab URL or description)
License info
Why this model fits their topic
Example response:
Based on your topic "fox mascot", here are some models I found:
1. Fox (Khronos sample)
Direct download, guaranteed compatible
Why: clean fox model, good for mascot/character decks
2. Low Poly Fox (Poly Pizza)
URL: https://poly.pizza/m/xxx
License: CC0 (completely free)
Why: low-poly style, good fit for clean minimal design
3. Cartoon Fox (Sketchfab)
URL: https://sketchfab.com/3d-models/fox-xxx
License: CC BY 4.0 (free, commercial use ok)
Why: expressive face, high detail
Which one do you want? I'll download it and start building.
Wait for user confirmation before downloading. Do not download without asking.
Step 4: Download the confirmed model
After user confirms, download directly:
# For Sketchfab (if user has the download URL)
curl -L -o model.glb "[download_url]"# For Khronos samples (always works)
curl -L -o model.glb "https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/Fox/glTF-Binary/Fox.glb"
After download, verify:
File exists and is not empty
File extension is .glb
File size is under 50MB
If Sketchfab requires login to download, tell the user:
"This model requires a Sketchfab login to download. You can grab the .glb file from the page and share it with me. Or I can use a Khronos sample model for a demo version first?"
Step 5: When user says "anything" / "you decide" / "just make a demo"
Don't just grab a random model. First guide the user to clarify their PPT topic:
Sure! I'll handle the model - but let me confirm the topic direction first so the model matches the content:
Tech/Product - headphones, phone, robot...
Animal/Character - cute pet, cartoon character...
Architecture/Space - building, interior, city...
Food/Lifestyle - dishes, everyday objects...
Other - just tell me your idea
Pick a direction, or just give me a topic keyword.
After user confirms a direction, THEN search and recommend models.
Step 6: When user wants to find models themselves
Give specific website links with step-by-step guidance:
After downloading, share the .glb file with me. If the download is a .gltf folder, use Blender to convert it to .glb.
Step 7: When user gives keywords and asks agent to search
Remind about token cost before searching:
I can search for you, but web searches use extra tokens. Would you prefer:
A. I search - I use the Sketchfab API and recommend 2-3 options (uses a few tokens)
B. Self-service - I give you search links and filter steps, you pick and share with me (no extra tokens)
A or B?
If user chooses A, proceed with Step 2 (agent-driven search).
If user chooses B, proceed with Step 6 (self-service guidance).
License reminder
Always remind before confirming download: "Please check the model license before downloading. CC0 / CC BY = free to use; CC BY-NC = non-commercial only."
Visual Design System (4.0 enrichment)
morph-ppt provides the base design rules. This section adds concrete palettes, font pairings, and layout quality rules from PPT Creator to give the AI more variety and stronger guardrails.
Color Palettes (pick one per deck, or blend)
Choose a palette that matches the topic mood - don't default to generic blue.
Palette
Primary
Secondary
Accent
Body Text
Muted/Caption
Coral Energy
F96167 (coral)
F9E795 (gold)
2F3C7E (navy)
333333
8B7E6A
Midnight Executive
1E2761 (navy)
CADCFC (ice blue)
FFFFFF
333333
8899BB
Forest & Moss
2C5F2D (forest)
97BC62 (moss)
F5F5F5 (cream)
2D2D2D
6B8E6B
Charcoal Minimal
36454F (charcoal)
F2F2F2 (off-white)
212121
333333
7A8A94
Warm Terracotta
B85042 (terracotta)
E7E8D1 (sand)
A7BEAE (sage)
3D2B2B
8C7B75
Berry & Cream
6D2E46 (berry)
A26769 (dusty rose)
ECE2D0 (cream)
3D2233
8C6B7A
Ocean Gradient
065A82 (deep blue)
1C7293 (teal)
21295C
2B3A4E
6B8FAA
Teal Trust
028090 (teal)
00A896 (seafoam)
02C39A (mint)
2D3B3B
5E8C8C
Sage Calm
84B59F (sage)
69A297 (eucalyptus)
50808E
2D3D35
7A9488
Cherry Bold
990011 (cherry)
FCF6F5 (off-white)
2F3C7E (navy)
333333
8B6B6B
Rules:
One color dominates (60-70% visual weight), 1-2 supporting tones, one accent
On light backgrounds: use Body Text color for copy, Muted for captions
On dark backgrounds: use Secondary or FFFFFF for copy, Muted for captions
For additional inspiration, browse ../../styles/INDEX.md - 50+ visual styles organized by mood (dark, light, warm, vivid, bw). Read style.md for design philosophy, build.sh for implementation reference. Learn the approach, do not copy coordinates verbatim
Font Pairings (pick one per deck)
Header Font
Body Font
Best For
Georgia
Calibri
Formal business, finance
Arial Black
Arial
Bold marketing, product launches
Calibri
Calibri Light
Clean corporate, minimal
Cambria
Calibri
Traditional professional
Trebuchet MS
Calibri
Friendly tech, startups
Impact
Arial
Bold headlines, keynotes
Palatino
Garamond
Elegant editorial, luxury
Consolas
Calibri
Developer tools, technical
Hard Rules (mandatory, no exceptions)
H4 - Body text minimum 16pt:
All body text, card content, and bullet points must be >= 16pt. "Content doesn't fit" is not an excuse - reduce text, split slides, or reduce card count instead. Exceptions: chart axis labels (<=12pt), short sublabels (<=14pt, max 5 words), footnotes.
H6 - Dark background contrast:
When slide background brightness < 30% (e.g. 1E2761, 36454F, 000000), ALL body text, card content, chart labels, and icon fills MUST use white (FFFFFF) or near-white (brightness > 80%). Never use mid-gray or muted colors as body text on dark backgrounds.
H7 - Speaker notes required:
Every content slide (not title/closing) MUST have speaker notes. Use:
Every 3 content slides, at least 1 must contain a non-text visual element:
Visual type
Implementation
Icon in colored circle
ellipse shape + centered text/number overlay
Colored block
preset=roundRect with fill
Large stat number
size=64, bold=true with small label below
Chart
--type chart (column/pie/line)
Gradient background
background=COLOR1-COLOR2-180
Shape composition
circles + connectors for diagrams
Text-only slides are only allowed for: quotes, code examples, pure tables.
3D Model Insertion Rules
Add model fresh on every slide - NEVER clone
morph_clone_slide copies the model as frozen XML. The cloned model cannot Morph.
Each slide must call add --type 3dmodel independently with the same name prop.
⚠️ CRITICAL: If you clone a slide that already has a 3D model, the old model XML is copied too. This creates TWO model3d elements with the same name on the new slide. PowerPoint cannot handle this conflict and will delete the model content during repair.
If you must clone a slide for scene actors, immediately remove the cloned model before adding a new one:
# After cloning slide 1 to slide 2:
officecli remove deck.pptx '/slide[2]/model3d[1]'# remove the frozen clone
officecli add deck.pptx '/slide[2]' --type 3dmodel ... # add fresh model
Recommended approach: Do NOT clone slides with 3D models at all. Create all slides empty first, then add models fresh on each.
meterPerModelUnit - auto-computed from GLB bounding box
preTrans - auto-computed for model centering
camera depth/position - auto-computed to fit the model
Never use raw-set on any 3D transform parameter
Model-Content Layout
Core Principle: Model IS the Subject
The model must feel like the protagonist of the presentation, not a sidebar decoration.
Text supports the model; the model does not decorate the text.
Size Contrast Rule (MANDATORY)
Adjacent slides must have a model area ratio >= 1.5x or <= 0.67x.
Compute area as width × height. If slide N model is 16×15=240 cm², slide N+1 must be >= 360 or <= 160.
Never use similar sizes on consecutive slides. This is the single most important rule for visual energy.
Size tier
Width
Height
Area (approx)
When to use
XL (bleed)
28-36cm
22-28cm
600-1000
Close-up, model extends beyond slide edges
L (hero)
18-24cm
15-19cm
270-456
Title, closing, dramatic moments
M (split)
13-17cm
12-16cm
156-272
Standard content pages with text
S (accent)
5-10cm
5-10cm
25-100
Data-heavy pages, model as icon
Layout Patterns (6 types)
A - Model right, content left (content pages)
Content at x=1-14cm. Model at x=15-20cm, width 14-18cm.
B - Model left, content right (alternate with A)
Model at x=0-2cm, width 14-18cm. Content at x=18-32cm.
C - Model centered, text overlay (title/closing)
Model centered large (18-24cm). Text at slide top or bottom.
D - Model small corner, content dominant (data pages)
Model 5-10cm in any corner. Content fills the rest.
E - Model as backdrop (impact/quote pages)
Model XL (28-36cm), centered, partially cropped by slide edges.
Text overlaid directly on top of model area with high-contrast color.
The model becomes the "canvas" - text lives inside the model's space.
F - Model bleed edge (transition/teaser pages)
Model partially off-screen (negative x or y, or x+width > 33.87cm).
Only part of the model visible - implies more beyond the frame.
Never repeat the same pattern on consecutive slides. Example:
Slide 1: C (centered hero, L)
Slide 2: E (backdrop close-up, XL) ← 1.5x+ area jump
Slide 3: A (model right, M) ← pull back
Slide 4: F (bleed edge, L) ← push in
Slide 5: D (small corner, S) ← dramatic pull back
Slide 6: B (model left, M) ← grow
Slide 7: C (centered closing, L) ← push in
Text Layout Safety (MANDATORY)
Text boxes must never overlap each other or the model frame.
Rules:
Title and body must not collide. If a title wraps to 2 lines, the body y must account for the title's actual height, not the planned height. Safe formula: body_y = title_y + title_height + 0.5cm
Fixed-height text boxes are dangerous. If text content is longer than expected, it will overflow invisibly. Use generous heights: title 3-4cm, body 6-8cm, bullets 8-10cm.
Model frame and text boxes: gap >= 1cm. Calculate: if model is at x=15cm, text x + width must be <= 14cm.
On Pattern C (centered model + text overlay): text goes at slide top (y=0.5-2cm) or bottom (y=14-17cm), NOT in the vertical middle where the model lives (y=3-13cm).
After building each slide, verify coordinates:
officecli get deck.pptx '/slide[N]' --depth 1
# Check: no two shapes share overlapping x/y/width/height ranges
Model Bleed Guidelines
Not every model looks good when cropped. Bleed (Pattern E/F) works best for:
❌ Small detailed models - cropping loses the detail you want to show
❌ When the cropped part is the most recognizable feature
For character/animal models (like fox, duck, avocado): keep the full model visible on all slides. Use size changes (L→M→S) for rhythm instead of bleed cropping. Use rotx for angle variety instead.
Camera Language
Three tools work together: roty (orbit), rotx (tilt), width/height (zoom).
Shot Types (use >= 3 different per deck)
Shot
Size
rotx
When
Establishing
L (18-24cm)
0-5
Title, intro, closing
Three-quarter beauty
L (16-20cm)
5-10
Hero, first impression
Close-up
XL (28-36cm), cropped
0-10
Feature highlight, detail
Bird's eye
M (13-17cm)
25-40
Structure, overview
Low angle
L (16-20cm)
-15 to -25
Power, drama
Side profile
M (13-16cm)
0
Form factor, silhouette
Over-the-shoulder
S (5-10cm)
10-15
Data-heavy, model as accent
Content-Driven Camera
Match the shot to what the slide talks about:
"Front design" → Close-up, roty=0, XL cropped
"Side profile" → Side, roty=90, M
"Internal structure" → Bird's eye, roty=30, rotx=35, M
"Power/authority" → Low angle, roty=20, rotx=-20, L
"Data & specs" → Over-the-shoulder, roty=60, S in corner
After standard morph verification, additionally check:
Each slide has exactly one model3d element
All models share the same name prop
Adjacent slides have model area ratio >= 1.5x or <= 0.67x
No two consecutive slides use the same layout pattern
File Placement Rule
All files must be in the same working directory.
Deliverables (exactly 4 files, no more):
.glb model file (the 3D model used in the deck)
Output .pptx
Build script (re-runnable)
brief.md
Do NOT create additional files such as outline.md, quality-report.md, test-report.md, etc. All planning goes in brief.md, all verification output goes to stdout. Extra files confuse users.
Do not scatter model files across unrelated paths.
