As part of trying to understand modular modelling more and de-risking our project I’ve created the base modular pieces for the road and pavement, and got them to connect seamlessly in UDK, these base pieces can be used to create variations, with things like cracks, drains, manholes etc. 

This might sound like the most boring blog post ever, but it caused some real problems. Making modular road pieces for a straight road or even a road with a 90 degree angle would have been pretty simple. With our 45 degree angle, and the way the pieces have to snap to the grid in UDK it became a struggle. In the end I used 2 pieces for the road (1 for the pavement and 1 for the road.) These pieces can be tiled to form a stretch of road, the stretch of road can then be rotated by 45degrees. To connect these separate stretches of road I resorted to creating a larger chunk of road with a bend in it making sure the edges of this bend fitted exactly onto the grid. Because rotating the road pieces stops them fitting to the grid evenly. A whole stretch of road has to be rotated simultaneously, and with the pivot point exactly on the corner of the piece that attaches to the bend it can be seamless. 

Individual Pieces: