提示词库 · 四方连续图案
十个实测的表面图案设计提示词——植物、几何、水磨石、木刻印花、托伊尔——每条旁边都是未经修改的单元图，外加那个两分钟的修补动作，能让它们中的任何一个真正循环起来。
开箱即用做不到，谁说能，谁就是没把文件真正拼过。你写「seamless repeating pattern」，Nano Banana会给你一张漂亮、分布均匀的满地花——但左边缘并不在数学上接续到右边缘，所以一拼接，每隔一个单元宽度就出现一道可见的接缝。当今所有通用图像模型都是如此；无缝是一个几何约束，不是一种风格，而这些模型是在生成像素，不是在求解约束。
修补大约花两分钟，而且百试百灵。用任何带偏移滤镜的编辑器打开这张图（Photoshop的Offset、GIMP的Offset、Affinity里的同类功能），把它水平和垂直各偏移一半，让原先的边缘在正中相遇，然后用图案自身的元素修复或仿制掉那道十字形接缝。再偏移回去，单元图就能完美循环了。像这里每条提示词那样要求「an evenly distributed all-over pattern with motifs of similar scale and no large empty areas」，会让这步清理变得毫不费力：密实均匀的图案没有别扭的空档需要打补丁。
三个要素：母题、排布和技法。母题是重复的那个东西——「small hand-painted fennel sprigs and single seed heads」。排布是它们怎么摆——「evenly scattered in a half-drop arrangement, motifs at consistent scale, no large empty areas, nothing cropped awkwardly at the frame edge」。技法则是媒介——「gouache with visible brush texture」「flat vector with hard edges」「lino block print with imperfect ink coverage」。
大家最容易忘的设定是尺度。「Small-scale ditsy print」和「large-scale bold motif」是两种产品：一个是衬衫面料，一个是主墙壁纸。要明确写出来，因为模型的默认值是一个不特别适合任何用途的中等尺度图案。配色也要用真实颜色点名——一个图案的商业价值大半在它的配色版本上，而「muted palette of clay, sage and bone on off-white」给你的才是你真愿意贴上墙的东西。下面十张单元图都是在BananaBanana上生成的未修改首次输出。
下面每张图片都是所在卡片提示词的未修输出——没有从几十次尝试里挑好的，也没有修图。模型徽标标明了它由什么生成、花了多少钱。
Repeating surface pattern of small hand-painted fennel sprigs, single seed heads and slender leaves, evenly scattered in a half-drop arrangement at consistent scale. Gouache technique with visible brush texture and slightly uneven edges, muted palette of sage, clay and bone on a warm off-white ground. All-over design with no large empty areas and nothing cropped awkwardly at the frame edge, flat top-down view.
Repeating geometric surface pattern of interlocking arches and half-circles in a strict grid, flat vector style with hard clean edges and no gradients. Limited palette of terracotta, deep teal, mustard and cream. Evenly distributed all-over design, consistent motif scale, no large empty areas, motifs meeting neatly at the frame edge, flat top-down view.
Repeating terrazzo surface pattern: irregular angular stone chips of mixed sizes densely scattered across a pale concrete ground, a few chips larger than the rest for rhythm. Palette of charcoal, blush, ochre and sage on soft white. Even all-over distribution with no clustering or empty areas, matte flat top-down view, no perspective.
Repeating textile pattern in the style of a hand-carved wood block print: a stylised eight-petal flower with a small leaf pair, stamped in a regular grid with slight rotation and imperfect ink coverage on each impression. Single indigo ink on undyed cotton ground, visible fabric weave texture. Even all-over design, consistent scale, flat top-down view.
Repeating toile-style surface pattern of small pastoral vignettes — a cottage, a footbridge, a pair of trees, a rowing boat — drawn in fine engraved linework and scattered evenly with sprigs filling the space between. Single deep olive ink on a cream ground, delicate crosshatched shading. Even all-over composition at consistent scale, no large empty areas, flat top-down view.
Repeating surface pattern of stylised overlapping wave scallops with fine concentric lines inside each arc, arranged in offset rows. Flat graphic treatment, limited palette of indigo, slate blue and cream, crisp edges. Even all-over design with uniform motif scale and no gaps, rows aligning cleanly with the frame edge, flat top-down view.
Repeating small-scale ditsy pattern of lemon halves, whole lemons and tiny leaf pairs scattered densely and evenly across a soft butter-yellow ground. Flat illustration with a thin darker outline, palette of lemon, leaf green and cream. Consistent small motif scale, no large empty areas, cheerful kitchen-textile feel, flat top-down view.
Repeating abstract surface pattern of short confident brushstrokes and small dots in irregular directions, evenly distributed across the field. Ink-on-paper texture with dry-brush edges, limited palette of charcoal, rust and dusty blue on warm white. Balanced all-over rhythm with no clustering, consistent stroke scale, flat top-down view.
Repeating art deco surface pattern of layered fan shapes with fine radiating lines, arranged in tight overlapping scale-like rows. Elegant palette of deep emerald, soft gold and black on ivory, flat graphic treatment with crisp geometry and no gradients. Uniform motif scale, rows meeting cleanly at the frame edge, large-scale wallpaper design, flat top-down view.
Repeating small-scale pattern of simple four-point stars, tiny crescent moons and scattered dots of varying sizes, evenly distributed across a deep navy ground. Flat matte treatment, palette of pale gold and off-white on navy, no gradients or glow. Consistent tiny motif scale with even spacing and no empty patches, nursery-textile feel, flat top-down view.
密实、节奏均匀的图案，事后要做成真正可拼接的容易得多。空档很大的稀疏图案，一循环就明显结块。
「Small-scale ditsy print」和「large-scale wallpaper motif」是面向不同买家的不同产品。不说的话，模型默认给出一个两边都不讨好的中等尺度图案。
把单元图水平和垂直各偏移一半，用图案自身的元素修掉十字接缝，再偏移回去。两分钟，此后这张图就能永远完美循环。
「Gouache with visible brush texture」「hand-carved block print with imperfect ink coverage」「flat vector with hard edges」——正是媒介让图案显得像被设计出来，而不是被生成出来。
因为生成的单元图边缘并不互相衔接——右边缘接不上左边缘。这是当今所有通用图像模型的局限，不是你提示词写错了。做一遍上面说的偏移加修复，接缝就永久消失了。
可以——你在BananaBanana上生成的内容归你所有，按需印花的面料服务也接受AI创作的图案。上传时查一下各平台的披露规则，订实体样品前务必按实际尺寸做一次循环拼接测试。
凡是要落到实物上的，都在Nano Banana 2上按2K生成。印花服务通常要求最终循环尺寸下150 dpi，所以一张2K的单元图大约能覆盖30厘米的循环。屏幕用途——背景、包装样稿、演示文稿——Lite的1K绰绰有余。
保持整条提示词不动，只改配色那一句；或者更好的做法是在编辑器里给成品单元图换色。换色能保住元素的精确位置，如果你已经在这张图上做过接缝处理，这一点很重要。
$0.03的Lite把扁平、图形化和几何类图案做得非常好——所以这里一半的单元图用的都是它。遇到绘画性技法就升到Nano Banana 2——水粉肌理、托伊尔的雕版线条、木刻印花的油墨变化——那里多出来的精度是真看得出来的。
