mirror of https://github.com/espruino/BangleApps
25 lines
1.2 KiB
Markdown
25 lines
1.2 KiB
Markdown
# ViewSTL
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A simple viewer to render 3D models on-screen. The STL files have to be of the ASCII (non-binary) type. The rendering process can become quite slow
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for models with more than ~200-300 facets.
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The app contains a number of inlined C routines and makes use of the microcontroller's FPU. Therefore, the app installed on the watch contains a base64 encoded binary
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blob with those routines. The full C code is provided on github.
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## Controls
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The app supports 4 different rendering modes, swiping right-to-left on the touch screen cycles through them:
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- shaded polygons
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- shaded polygons with edge highlighting
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- wireframe, only edges between non-coplanar facets visible
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- wireframe, all facet (triangle) edges visible
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There are three different rotation modes that slightly alter the function of buttons 1 and 3, swiping left-to-right cycles through the modes:
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- free rotation: button 1 zooms in, button 3 out
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- Z-axis (vertical axis) rotation: buttons 1 and 3 tilt the Z-axis
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- align rotation with compass and accelerometer readings: button 1 zooms in, button 3 out
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There is currently no interface to upload STL files to the watch, the web IDE storage icon can be used instead.
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