glTF improvements (normal scale, camera fix), mixing glTF with X3D using IMPORT / EXP

[DP News-Robot]

In both glTF and X3D we implement now a feature to “emphasize / deemphasize normal map”. In glTF this is in material.normalTextureInfo.scale, in X3D this is in normalScale parameter of Material or PhysicalMaterial. The intuitive meaning of it is: value = 1 is the default, regular bump mapping behavior. values < 1 make normal map …