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import type {FileRenderPlugin} from '../plugin.ts';
import {extname} from '../../utils.ts';
// support common 3D model file formats, use online-3d-viewer library for rendering
// eslint-disable-next-line multiline-comment-style
/* a simple text STL file example:
solid SimpleTriangle
facet normal 0 0 1
outer loop
vertex 0 0 0
vertex 1 0 0
vertex 0 1 0
endloop
endfacet
endsolid SimpleTriangle
*/
export function newRenderPlugin3DViewer(): FileRenderPlugin {
// Some extensions are text-based formats:
// .3mf .amf .brep: XML
// .fbx: XML or BINARY
// .dae .gltf: JSON
// .ifc, .igs, .iges, .stp, .step are: TEXT
// .stl .ply: TEXT or BINARY
// .obj .off .wrl: TEXT
// So we need to be able to render when the file is recognized as plaintext file by backend.
//
// It needs more logic to make it overall right (render a text 3D model automatically):
// we need to distinguish the ambiguous filename extensions.
// For example: "*.obj, *.off, *.step" might be or not be a 3D model file.
// So when it is a text file, we can't assume that "we only render it by 3D plugin",
// otherwise the end users would be impossible to view its real content when the file is not a 3D model.
const SUPPORTED_EXTENSIONS = [
'.3dm', '.3ds', '.3mf', '.amf', '.bim', '.brep',
'.dae', '.fbx', '.fcstd', '.glb', '.gltf',
'.ifc', '.igs', '.iges', '.stp', '.step',
'.stl', '.obj', '.off', '.ply', '.wrl',
];
return {
name: '3d-model-viewer',
canHandle(filename: string, _mimeType: string): boolean {
const ext = extname(filename).toLowerCase();
return SUPPORTED_EXTENSIONS.includes(ext);
},
async render(container: HTMLElement, fileUrl: string): Promise<void> {
// TODO: height and/or max-height?
const OV = await import(/* webpackChunkName: "online-3d-viewer" */'online-3d-viewer');
const viewer = new OV.EmbeddedViewer(container, {
backgroundColor: new OV.RGBAColor(59, 68, 76, 0),
defaultColor: new OV.RGBColor(65, 131, 196),
edgeSettings: new OV.EdgeSettings(false, new OV.RGBColor(0, 0, 0), 1),
});
viewer.LoadModelFromUrlList([fileUrl]);
},
};
}
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