🛠️🐜 Antkeeper superbuild with dependencies included
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1.0 KiB
1.0 KiB
Simple HDR cubemap to longlat(longitude latitude. or known as equirectangular) converter.
Requirements
- C++11 compiler
Coordinate definition.
- Y-up
- Right-handed
- Center is -z
Usage
Assume cubemap image is given by 6 images(6 faces).
$ ./cube2longlat px.exr nx.exr py.exr ny.exr pz.exr nz.exr 512 longlat.exr (phi_offset)
Optional phi_offset is used to add offset(by angle) to phi to rotate X and Z faces.
Supported input image format
Supported output image format
Note
When you create cubemap using Filament's cmgen https://github.com/google/filament/tree/master/tools/cmgen , its generated cubemap images are mirrored by X direction.
Use --mirror when invoking cmgen if required.
TODO
- Single cubemap image(cross layout)
- Better antialiasing
- theta offset
- Mirroring.