Realistic Rendering Tool for Pseudo-Structural Coloring with Multi-Color Extrusion of FFF 3D Printing

In this study, we developed a flow to simulate anisotropy in multi-color printing of a FFF 3D printer. There are previous methods for simulating layered marks from gcode, which is a 3D printer control statement, and multi-color printing by switching filament colors and their simulators. However, there was no simulator for the case where color anisotropy exists in a single path, which is the target of this study. Since the coloring of this method is based on a completely different principle from existing methods, it is difficult to predict the results. Our simulator tool was very useful in rendering multi-color 3D printed models. Furthermore, a more sophisticated simulation of the placement of objects in real space was performed based on the highly realistic images created by physical-based rendering. The simulation also worked in VR space and showed an optimal preview at the architectural scale.