[learning notes] unreal 4 engine introduction (IV)

Terrain making

UE4 Different terrain can be generated through terrain mode . The feeling of using in ordinary levels is similar to that of playing roller coaster tycoon's terrain development tool .

Let's focus on how to generate the terrain of the real world by importing the gray map .

Find the Satellite Topographic Map of the target location ：

After saving it , Use PS To deal with .

First step , Use ctrl+i Reverse color treatment . The purpose is to use darker colors for higher places .

The second step , Black and white processing ： Images -》 adjustment -》 Black and white processing . Turn red 、 Turn yellow to the lowest .

The third step , Grayscale processing , because UE4 Only support 16 Bit channel grayscale , So pass ： Images -》 Pattern （ Select grayscale and 16 Bit channel ）, Now the pixels in this picture are not RGB Color , It's a grayscale value （ Indicates the altitude ）

Step four , Adjust the resolution as needed , Use a filter -》 Fuzzy -》 Surface blur blur the image （ Because the accuracy of my screenshot is very low , It is better to use a real height map ）

Step five , Save as png or raw Format , because UE4 Only these two formats of pictures are supported .

Step six , stay UE4 In terrain mode of , Click Import from file , Adjust the parameters . The resolution here is the same as before PS The resolution adjusted in  . Finally, click Import below .