After exploring for a while, I found that this is completely achievable. The model has geometric information and material information. At present, there are still some defects. For example, in the official example, the terrain and trees are not displayed, and the display effect is average. The implementation method is to convert the revit model data into intermediate data through the plug-in, then webgl reads the intermediate data, and then regenerates the final model. Direct reading of rvt models is not currently supported.
The former can modify the code, and the latter can be solved by writing shaders.
The result is as follows:
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