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3d-shape-captcha

스타21

포크1

업데이트2026년 5월 9일 11:46

基于 Three.js 实时渲染的 3D 几何体验证码系统，支持软阴影和 Raycaster 点击交互。后端生成 6 个大小严格互不相同的 3D 几何体元数据（位置、旋转、缩放、颜色、类型），前端使用多光源布光和正交相机实现公平大小比较。适用于实现或修改基于点击的 3D 几何体验证码，或将图形验证码集成到邮件验证码发送等敏感操作中。

설치

Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.

Manus에서 실행

출처

LSTM-Kirigaya

LSTM-Kirigaya/jinhui-skills

GitHub 저장소 열기 Creator 저장소 보기

다운로드

Manus에서 실행

3D Shape CAPTCHA

A click-based geometric CAPTCHA system with real-time 3D rendering, multi-light shadows, and proportional scale generation guaranteeing 6 unique sizes.

Architecture

Backend (Go)          Frontend (Vue3 + Three.js)
    |                         |
Generate 6 shape         Render WebGL scene
metadata (no PNG)        with shadows
    |                         |
Store in Redis  <---  Raycaster click
    |               detects object
Validate shapeIndex       |
    |                         |
Issue token  --------->  Success

Backend generates scene metadata only. Frontend renders the actual 3D scene with Three.js. User clicks are validated by object index, not pixel coordinates.

Backend Implementation

Core Files

assets/backend-captcha.go — Complete Go implementation (captcha generation + verification)
references/backend-api.md — API specification, data models, Redis schema, scale algorithm

Key Design Decisions

No PNG rendering — Backend returns JSON metadata; frontend handles all visuals
Proportional scale — 6 shapes generated from a scale [0.55, 1.30] with equal-interval base values plus ±0.03 jitter. Base interval (0.15) > 2× jitter range (0.06) mathematically guarantees all 6 scales are unique
Grid layout — 2×3 grid with ±0.4 random offset within each cell prevents overlap
Volume comparison — Uses scale³ as uniform metric regardless of shape type

Redis Schema

Key	Value	TTL
`captcha:{id}`	JSON: `{targetIndex, shapes[], prompt, targetShape}`	5 min
`captcha_token:{token}`	`"1"`	5 min

Integration Points

POST /api/captcha/generate — Returns 6 shape metadata
POST /api/captcha/verify — Receives {captchaId, shapeIndex}, returns token on success
ValidateCaptchaToken(redis, token) — Utility for other controllers (e.g. email verification)

Frontend Implementation

Core Files

assets/CaptchaDialog.vue — Complete Vue3 component with Three.js scene
assets/api-index.js — API client functions
references/frontend-integration.md — Scene setup, lighting config, raycaster, responsive CSS

Three.js Scene Setup

Component	Configuration
Renderer	WebGLRenderer, antialias, shadowMap enabled, PCFSoftShadowMap
Camera	OrthographicCamera (frustumSize=7.5), position (8,8,8), lookAt (0,0.5,0)
Lights	Ambient(0.35) + Hemisphere(0.4) + Directional(1.4, casts shadow) + Fill(0.25) + Rim Point(0.4)
Ground	PlaneGeometry(20,20), MeshStandardMaterial, receiveShadow
Material	MeshStandardMaterial, roughness=0.35, metalness=0.08

Shape Geometry Mapping

`type`	Shape	Three.js Geometry
0	Cube	`BoxGeometry(1,1,1)`
1	Cylinder	`CylinderGeometry(0.5,0.5,1,32)`
2	Triangular prism	`CylinderGeometry(0.5,0.5,1.25,3)`

Triangular prism uses height 1.25 (vs 1.0 for others) for better visual distinction.

Click Interaction

Use THREE.Raycaster to detect clicked mesh. Each mesh stores its index in userData.index. Send this index to backend for verification.

Responsive Design

Desktop: dialog max-width 520px, canvas height 360px
Mobile (<480px): canvas height 260px
Mobile (<360px): canvas height 220px

Workflow: Adding CAPTCHA to Email Verification

Backend: Add captchaToken field to email send request
Backend: Call captcha.ValidateCaptchaToken(redis, token) before sending email
Frontend: Open CaptchaDialog before requesting email code
Frontend: On success event, receive token and include it in email API call

Complete Code References

Backend implementation: assets/backend-captcha.go
Frontend dialog component: assets/CaptchaDialog.vue
API functions: assets/api-index.js
Backend API details: references/backend-api.md
Frontend integration guide: references/frontend-integration.md

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name	3d-shape-captcha
description	基于 Three.js 实时渲染的 3D 几何体验证码系统，支持软阴影和 Raycaster 点击交互。后端生成 6 个大小严格互不相同的 3D 几何体元数据（位置、旋转、缩放、颜色、类型），前端使用多光源布光和正交相机实现公平大小比较。适用于实现或修改基于点击的 3D 几何体验证码，或将图形验证码集成到邮件验证码发送等敏感操作中。
tags	["captcha","3d","three.js","go","vue","security"]
model	deepseek-chat
rootUrl	https://raw.githubusercontent.com/LSTM-Kirigaya/jinhui-skills/main/skills/3d-shape-captcha/SKILL.md
examples	["给邮件验证码发送接口加一个 3D 几何体点击验证码，防止被脚本批量刷接口","把现有图片验证码升级为 Three.js 3D 渲染的几何体识别验证码，增强抗 OCR 能力"]

3D Shape CAPTCHA

A click-based geometric CAPTCHA system with real-time 3D rendering, multi-light shadows, and proportional scale generation guaranteeing 6 unique sizes.

Architecture

Backend (Go)          Frontend (Vue3 + Three.js)
    |                         |
Generate 6 shape         Render WebGL scene
metadata (no PNG)        with shadows
    |                         |
Store in Redis  <---  Raycaster click
    |               detects object
Validate shapeIndex       |
    |                         |
Issue token  --------->  Success

Backend generates scene metadata only. Frontend renders the actual 3D scene with Three.js. User clicks are validated by object index, not pixel coordinates.

Backend Implementation

Core Files

assets/backend-captcha.go — Complete Go implementation (captcha generation + verification)
references/backend-api.md — API specification, data models, Redis schema, scale algorithm

Key Design Decisions

No PNG rendering — Backend returns JSON metadata; frontend handles all visuals
Proportional scale — 6 shapes generated from a scale [0.55, 1.30] with equal-interval base values plus ±0.03 jitter. Base interval (0.15) > 2× jitter range (0.06) mathematically guarantees all 6 scales are unique
Grid layout — 2×3 grid with ±0.4 random offset within each cell prevents overlap
Volume comparison — Uses scale³ as uniform metric regardless of shape type

Redis Schema

Key	Value	TTL
`captcha:{id}`	JSON: `{targetIndex, shapes[], prompt, targetShape}`	5 min
`captcha_token:{token}`	`"1"`	5 min

Integration Points

POST /api/captcha/generate — Returns 6 shape metadata
POST /api/captcha/verify — Receives {captchaId, shapeIndex}, returns token on success
ValidateCaptchaToken(redis, token) — Utility for other controllers (e.g. email verification)

Frontend Implementation

Core Files

assets/CaptchaDialog.vue — Complete Vue3 component with Three.js scene
assets/api-index.js — API client functions
references/frontend-integration.md — Scene setup, lighting config, raycaster, responsive CSS

Three.js Scene Setup

Component	Configuration
Renderer	WebGLRenderer, antialias, shadowMap enabled, PCFSoftShadowMap
Camera	OrthographicCamera (frustumSize=7.5), position (8,8,8), lookAt (0,0.5,0)
Lights	Ambient(0.35) + Hemisphere(0.4) + Directional(1.4, casts shadow) + Fill(0.25) + Rim Point(0.4)
Ground	PlaneGeometry(20,20), MeshStandardMaterial, receiveShadow
Material	MeshStandardMaterial, roughness=0.35, metalness=0.08

Shape Geometry Mapping

`type`	Shape	Three.js Geometry
0	Cube	`BoxGeometry(1,1,1)`
1	Cylinder	`CylinderGeometry(0.5,0.5,1,32)`
2	Triangular prism	`CylinderGeometry(0.5,0.5,1.25,3)`

Triangular prism uses height 1.25 (vs 1.0 for others) for better visual distinction.

Click Interaction

Use THREE.Raycaster to detect clicked mesh. Each mesh stores its index in userData.index. Send this index to backend for verification.

Responsive Design

Desktop: dialog max-width 520px, canvas height 360px
Mobile (<480px): canvas height 260px
Mobile (<360px): canvas height 220px

Workflow: Adding CAPTCHA to Email Verification

Backend: Add captchaToken field to email send request
Backend: Call captcha.ValidateCaptchaToken(redis, token) before sending email
Frontend: Open CaptchaDialog before requesting email code
Frontend: On success event, receive token and include it in email API call

Complete Code References

Backend implementation: assets/backend-captcha.go
Frontend dialog component: assets/CaptchaDialog.vue
API functions: assets/api-index.js
Backend API details: references/backend-api.md
Frontend integration guide: references/frontend-integration.md