> ## Documentation Index
> Fetch the complete documentation index at: https://docs.runchat.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Generate orthographic sheets from a single image

> Ask an image model to draw a plan, elevations and a section of the building in a concept image

Image models can reason about the building behind a perspective image and draw it in orthographic projection. Ask for all the drawings on one sheet so they share a scale.

![A cardboard concept model and the orthographic drawing sheet generated from it](https://mintcdn.com/runchat/ExzxwftWKPCOoCF3/images/examples/orthographic-sheets.webp?fit=max\&auto=format\&n=ExzxwftWKPCOoCF3\&q=85\&s=bb99542840198f18950384524b712c92)

> [card] [Open the example workflow](https://runchat.com/editor?id=bb4ac5c3-368b-4521-9498-650391a9d30b)
>
> Make a copy of this workflow in your account to try it with your own images.

## How it works

1. **Generate the concept (Flux 2 Klein)** makes the concept image.
2. **Orthographic drawing sheet (Nano Banana Pro 4K)** draws a 2x2 sheet: roof plan, front elevation, side elevation and section, *as true orthographic projections at one consistent scale… no perspective*.

## Tips

* Say which side each elevation is from, relative to the photo, so they line up with the image.
* Treat the result as a sketch: check proportions before you trace over it.


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