Methods to get the SDF value

[liangjunchen88]

Hey I am a new learner. Appreciate your excellent work for the package.

I am wondering how we can get the SDF value by sampling the sdf texture?
To be more specific, now we have SDFTexture.sdf(RenderTexture) and SDFTexture. worldToSDFTexCoords(Matrix4*4),
Below is what I thought:

          // Transform the vertex using the provided matrix
           var transformedVertex = m_worldToSDFTexCoords * new Vector4(vertex.x, vertex.y, vertex.z, 1.0f);
           var textureCoords = new Vector3(transformedVertex.x, transformedVertex.y, transformedVertex.z);
           // Ensure the texture coordinates are within the texture bounds
           textureCoords.x = Mathf.Clamp01(textureCoords.x);
           textureCoords.y = Mathf.Clamp01(textureCoords.y);
           textureCoords.z = Mathf.Clamp01(textureCoords.z);

           // How to read the SDF value from the texture at the specified texture coordinates? Like below?
           var sdfValue = m_sdf.GetPixel(textureCoords.x, textureCoords.y, textureCoords.z);

[liangjunchen88]

But as we know, there is not function called GetPixel for RenderTexture, so I am wondering how we can get the SDF value for each vertex