Bitmap to Mesh is a SketchUp Ruby plugin designed to generate complex 3D terrain and relief geometry from greyscale heightmap images. This extension functions as a utility tool for SketchUp, enabling the rapid conversion of pixel-based greyscale data into triangulated mesh surfaces. The resulting geometry is a dense, editable mesh that provides a base for site modelling and topographic studies. The plugin manages the vertex density, allowing users to control the fidelity of the final terrain model while maintaining compatibility with standard SketchUp geometry workflows for further site development.

The download is a 72 KB file containing .ZIP files.

To operate this tool, users select a source image file within the SketchUp environment and define the desired grid resolution. The plugin automatically parses the greyscale data to construct a corresponding terrain mesh. Once generated, the resulting surface exists as native geometry, which can be sculpted, smoothed, or intersected with other building massings using standard modelling commands. It is essential to ensure the source bitmap has sufficient resolution to support the intended level of topographic detail.

The tool is indispensable for landscape architects and urban designers working on site-specific projects that require accurate terrain representation. It is frequently employed during the masterplanning phase to translate GIS-derived heightmaps or conceptual sketches into 3D massing models. Professionals use this plugin to generate base topography for residential housing developments, large-scale park designs, and complex villa projects. By automating the creation of relief geometry, it streamlines the workflow for designers who need to integrate real-world site data into their digital design environment.