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Proland is a C++/OpenGL library for the real-time
rendering of multi-resolution terrains (up to whole planets), the
real-time management and edition of vector
data (representing for instance roads or
rivers), the rendering of atmosphere and
clouds, the rendering and animation of the oceans,
and the rendering of forests.
All data are loaded or generated on the fly
according to the viewpoint, and can be
combined procedurally. For instance the shape
and texture of a terrain can be modified using
vector data representing roads and rivers.
Features
| terrains | Terrain data can be stored on disk, procedural, or a mix of the two (e.g.,
to amplify real data with fractal details); Terrain data can be used for
anything (elevation, normals, horizon maps, color texture, tree density maps,
etc); preprocessing tools are provided to convert terrain data to our internal format,
to precompute horizon maps for terrain shadows, etc. Proland comes with precomputed data
for the whole Earth, at 500m/pixel for colors and 90m/pixel for elevations.
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| roads | Roads are specified with Bezier
curves, and are automatically integrated in the terrain shape (to get flat and horizontal
roads even on bumpy terrains) and in the terrain texture. The Bezier curves can be edited
interactively; the roads are recomputed in real-time after each edit. |
| atmosphere | The atmosphere is rendered in
real time from any viewpoint from ground level to outer space, while taking Rayleigh
and Mie multiple scattering into account. It correctly reproduces daylight and twilight
sky color and aerial perspective for all view and light directions. |
| oceans | The ocean is rendered, animated and
illuminated in real-time, at all scales and for all viewing distances. Our ocean correctly
reflects the Sun and the sky light at all scales, yielding very realistic results. |
| edition | Any terrain data can be edited on the fly, while navigating in the 3D scene: the terrain shape, its texture, the roads, the tree density maps, etc. |
| forests | Forests are rendered with hundreds of thousands of instantiated billboards, in real-time. |
| modularity | Proland is made of a core library
and of 7 predefined and independent plugins, each in its own dynamic library (DLL).
You can easily add your own plugins to add new functionalities to Proland. |
License
Proland is distributed under a dual-license scheme.
You can obtain a specific license from Inria at proland-licensing@inria.fr.
Otherwise the default license is the GPL version 3:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU
General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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A C++/OpenGL library for the real-time realistic rendering of very large and detailed 3D natural scenes on GPU
