How do I get material immediately after loading splat?

rookiewxy · July 23, 2024, 8:05am

Now you need to get it through setTimeout

CrashMaster · July 23, 2024, 8:33am

The material is created the first time render is called:

BabylonJS/Babylon.js/blob/bc856ee173477666f25346ac9a07efc37fe70d75/packages/dev/core/src/Meshes/GaussianSplatting/gaussianSplattingMesh.ts#L113


      
          

          /**

           * Triggers the draw call for the mesh. Usually, you don't need to call this method by your own because the mesh rendering is handled by the scene rendering manager

           * @param subMesh defines the subMesh to render

           * @param enableAlphaMode defines if alpha mode can be changed

           * @param effectiveMeshReplacement defines an optional mesh used to provide info for the rendering

           * @returns the current mesh

           */

          public override render(subMesh: SubMesh, enableAlphaMode: boolean, effectiveMeshReplacement?: AbstractMesh): Mesh {

              if (!this.material) {

                  this._material = new GaussianSplattingMaterial(this.name + "_material", this._scene);

                  this.material = this._material;

              }

          

              const frameId = this.getScene().getFrameId();

              if (frameId !== this._frameIdLastUpdate && this._worker && this._scene.activeCamera && this._canPostToWorker) {

                  this.getWorldMatrix().multiplyToRef(this._scene.activeCamera.getViewMatrix(), this._modelViewMatrix);

                  TmpVectors.Vector3[0].set(this._lastModelViewMatrix[8], this._lastModelViewMatrix[9], this._lastModelViewMatrix[10]);

                  TmpVectors.Vector3[1].set(this._modelViewMatrix.m[8], this._modelViewMatrix.m[9], this._modelViewMatrix.m[10]);

                  TmpVectors.Vector3[0].normalize();

                  TmpVectors.Vector3[1].normalize();

You can probably use gs.onAfterRenderObservable.addOnce to get the material after creating the gaussian splatting mesh

CrashMaster · July 23, 2024, 8:35am

This works:

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How do I get material immediately after loading splat?

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