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一键替换服装面料。版式图 + 面料图 → 换上新面料的样衣图，垂坠与光泽随材质变。当用户说「换面料」「换材质」「试布料」「面料上身」「同款不同料」时使用。
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Read SKILL.md and any companion files shown by SkillsMP before deciding whether to install.
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A direct command skips the review prompt. Inspect the source before running it.
npx skills add https://github.com/dlazy-ai/ecommerce-skills --skill fabric-on-bodyThe command stays on one line. Scroll horizontally to inspect it before copying.
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Showing SKILL.md
| name | fabric-on-body |
| description | 一键替换服装面料。版式图 + 面料图 → 换上新面料的样衣图，垂坠与光泽随材质变。当用户说「换面料」「换材质」「试布料」「面料上身」「同款不同料」时使用。 |
版型不动，面料换掉。给一张服装版式图 + 一张面料小样，输出这个版型用新面料做出来的样衣效果图。
价值在打样前：一个版型试 8 种面料，传统做法是打 8 件样衣（每件几天、几百块）；这里是 8 次生成。
| 输入：服装版式图 | 输入：面料图 |
|---|---|
 |  |
style-sheet.jpg — 落肩宽松圆领毛衣版型，800×800 | fabric-swatch.jpg — 象牙白真丝缎面小样，640×640 |
实际执行的命令：
dlazy gpt-image-2 \
--prompt 'Fabric replacement for a garment style sheet. Image 1 is the garment pattern/style reference: an oversized drop-shoulder crewneck sweater with ribbed collar, cuffs and hem. Image 2 is the target fabric: ivory silk satin with a soft lustrous sheen and fine weave. Re-render the exact same garment silhouette from image 1 in the fabric from image 2. Keep the pattern identical: same oversized drop-shoulder cut, same body length, same sleeve length, same collar/cuff/hem construction, same flat-lay layout and camera angle. Replace only the material — the sweater must now read as ivory silk satin with specular highlights on the folds and soft drape instead of chunky knit. Clean white background, even studio light, no text.' \
--images docs/fabric-on-body/style-sheet.jpg docs/fabric-on-body/fabric-swatch.jpg \
--size 1024x1024 --quality medium --imageFormat jpeg \
--save docs/fabric-on-body/example-output.jpg
输出
example-output.jpg — 1024×1024。落肩剪裁、身长袖长、罗纹领口袖口下摆的结构与平铺角度都与版式图一致；材质从粗针织变成象牙白真丝缎面，褶皱上出现高光、垂坠变得柔顺，罗纹部位仍以缎面质感保留。
| 输入 | 说明 |
|---|---|
| 服装版式图 | 决定版型、剪裁、结构与拍摄角度 |
| 面料图 | 决定材质、纹理、光泽与垂坠感（面料小样特写最佳） |
| 服装类型 | 帮助模型理解结构（上装 / 下装 / 连衣裙 / 外套 / 内衣） |
| 保持不变 | 会改变 |
|---|---|
| 版型与剪裁、身长袖长、领口/袖口/下摆结构、缝线位置、拍摄角度与构图 | 材质与织法、表面光泽、垂坠与褶皱形态、厚度观感 |
不做：不改版型比例；不改变服装的结构设计；不承诺真实打样的手感与克重——输出是视觉预览，不是工艺样衣。
生成前先自检这几条硬性约束：
版式图（✅）：纯色背景、结构清晰、正面完整的平铺图或人台图。
面料图（✅）：面料小样特写，能看清织纹与光泽；有褶皱转折更好（能交代垂坠）。
会明显拉低效果的输入（❌）
| 问题 | 说明 |
|---|---|
| 面料图拍太远 | 看不清织纹，只会当成一块纯色 |
| 面料图带强环境色 | 黄光下拍的白布会换成米黄色 |
| 版式图有复杂印花 | 原印花会和新面料打架，先用 item-repair 或换素图 |
| 面料与品类不匹配 | 硬挺牛仔布做不出吊带裙的垂坠，模型会硬凑 |
只说「换成真丝」不够——模型不知道该怎么改光影。要把材质翻译成可画出来的物理特征：
| 面料 | 要写的物理特征 |
|---|---|
| 真丝 / 缎面 | lustrous specular highlights along the folds, fluid drape, soft continuous gradients |
| 粗针织 | chunky knit loops with visible yarn twist, matte fibre halo, structured heavy drape |
| 牛仔 | twill diagonal weave, slight slub texture, stiff drape with sharp fold creases |
| 灯芯绒 | vertical wale ridges catching light, matte pile, medium-stiff drape |
| 雪纺 | semi-sheer, very light drape with many fine ripples, soft diffused light through the fabric |
| 皮革 | low-frequency specular sheen, grain texture, stiff drape with broad soft creases |
| 摇粒绒 | dense short pile, fuzzy silhouette edge, no specular highlight |
再加一句「版型不许动」——这是本技能最容易失守的地方：
Keep the pattern identical: same cut, same body length, same sleeve length,
same collar/cuff/hem construction, same flat-lay layout and camera angle.
Replace only the material.
本技能使用 dLazy 的 gpt-image-2（图像编辑模型；面料替换要求「几何完全不动、材质完全改变」，是典型的定向属性替换任务）。
两种等价写法，选一种。统一入口会自动选后端、失败重试、建目录落盘、估算成本：
# A. 统一入口（推荐）：可切任意后端，加 --dry-run 不计费空跑
node scripts/gen.mjs --task fabric-on-body \
--prompt '<见下方 Prompt 模板>' \
--images <按下表顺序> \
--save output/fabric-on-body-<sku>.jpg
# B. 直接用 dLazy CLI（不想引入 Node 依赖时，效果等价）
dlazy gpt-image-2 --prompt '...' --images ... --save output/fabric-on-body.jpg
参数约定（本技能固定用法）
| 参数 | 取值 | 理由 |
|---|---|---|
--images | [版式图, 面料图] | 顺序即 prompt 中的 image 1 / 2 |
--size | 与版式图比例一致（1024x1024 平铺 / 1024x1536 人台竖版） | 换料不该改构图 |
--quality | high | 材质是本技能的唯一产出，必须 high |
--imageFormat | jpeg | 通用格式 |
--batch | 2 ~ 3 | 垂坠形态有随机性 |
--save | docs/fabric-on-body/output-<版型>-<面料>.jpg | 版型 × 面料矩阵命名 |
# basic call: 一个版型换一种面料
dlazy gpt-image-2 \
--prompt 'Fabric replacement. Image 1 is the garment pattern reference, image 2 is the target fabric. Re-render the exact same garment silhouette from image 1 in the fabric from image 2. Keep the pattern identical: same cut, body length, sleeve length, collar/cuff/hem construction, layout and camera angle. Replace only the material. Clean white background, even studio light, no text.' \
--images docs/fabric-on-body/style-sheet.jpg docs/fabric-on-body/fabric-swatch.jpg \
--size 1024x1024 --quality high
# complex call: 一个版型 × 多种面料，跑成一个选型矩阵
STYLE=docs/fabric-on-body/style-sheet.jpg
KEEP='Keep the pattern identical: same oversized drop-shoulder cut, same body length, same sleeve length, same collar/cuff/hem construction, same flat-lay layout and camera angle. Replace only the material.'
for F in satin corduroy denim fleece; do
case $F in
satin) PHYS='lustrous specular highlights along the folds, fluid drape, soft continuous gradients' ;;
corduroy) PHYS='vertical wale ridges catching light, matte pile, medium-stiff drape' ;;
denim) PHYS='twill diagonal weave, slight slub texture, stiff drape with sharp fold creases' ;;
fleece) PHYS='dense short pile, fuzzy silhouette edge, no specular highlight' ;;
esac
dlazy gpt-image-2 \
--prompt "Fabric replacement for a garment style sheet. Image 1 is the garment pattern/style reference. Image 2 is the target fabric. Re-render the exact same garment silhouette from image 1 in the fabric from image 2. $KEEP The garment must now read as $F: $PHYS. Clean white background, even studio light, no text." \
--images "$STYLE" "docs/fabric-on-body/swatch-$F.jpg" \
--size 1024x1024 --quality high --imageFormat jpeg \
--save "docs/fabric-on-body/output-drop-shoulder-$F.jpg"
done
# 先估价不真跑
dlazy gpt-image-2 --dry-run --prompt --images a.jpg b.jpg --size 1024x1024 --quality high
| 要查什么 | 去哪 |
|---|---|
| 认证、多后端配置、输出结构、错误码 | references/provider-cli.md |
gpt-image-2 的全部可用参数 | references/model-flags.md |
| 统一入口的全部选项 | node scripts/gen.mjs --help |
Fabric replacement for a garment style sheet.
Image 1 is the garment pattern/style reference: [品类 + 版型描述].
Image 2 is the target fabric: [面料名 + 颜色 + 光泽描述].
Re-render the exact same garment silhouette from image 1 in the fabric from image 2.
Keep the pattern identical: same [剪裁], same body length, same sleeve length,
same [领口/袖口/下摆结构], same [缝线位置], same layout and camera angle.
Replace only the material — the garment must now read as [面料名]:
[第三节表格里对应的物理特征].
Clean [背景色] background, even studio light, no text.
按问题追加的修正句
| 问题 | 追加到 prompt 末尾 |
|---|---|
| 版型跟着变了 | The silhouette outline must be pixel-aligned with image 1. Only surface material may differ. |
| 面料颜色偏了 | Sample the fabric colour from image 2 under neutral light; do not shift hue or add colour cast. |
| 换完还是原来的质感 | 把物理特征写得更极端，并追加 The original [原面料] texture must be completely gone. |
| 垂坠不对 | Drape stiffness: [very fluid / medium / stiff]. Fold count and fold radius must match a [面料] of about [克重] gsm. |
| 缝线/罗纹消失了 | Preserve construction details: [罗纹/明线/拉链] must remain visible in the new material. |
--quality high 起跑，比例跟随版式图。| 现象 | 原因 | 处理 |
|---|---|---|
| 版型变了 | 未锁定轮廓 | 追加 silhouette outline must be pixel-aligned with image 1 |
| 面料颜色不对 | 面料图带环境色 | 重拍面料小样（中性光），或追加取色约束句 |
| 质感没换掉 | 物理特征写得太弱 | 用第三节表格的极端描述 + original texture must be completely gone |
| 垂坠像纸板 | 未指定垂坠刚度 | 追加 drape stiffness 句，给出克重参考 |
| 罗纹/明线消失 | 被新材质吞掉 | 追加保留结构细节句 |
| 面料与品类物理上不成立 | 硬挺布做垂坠款 | 换匹配的面料，或改版型 |
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