A small and simple C++ CLI tool that converts greyscale heightmaps to 3D OBJ models. Uses lodepng and obj.

./hmap2obj <pngpath> <width> <height> <objpath> <extentX> <extentZ> <maxY>

• pngpath - Absolute path to the input png file.
• width - Width of the input png file in pixels.
• height - Height of the input png file in pixels.
• objpath - Absolute path to the output obj file.
• extentX - Resulting model extent on the X-axis.
• extentZ - Resulting model extent on the Z-axis.
• maxY - White pixels will be mapped to this Y value. All other pixels will be mapped to a value between [0; maxY] according to their greyscale value. A black pixel will always map to Y = 0.

Cmake files have been added to compile and use this library

mkdir build
cd build
cmake ..
make

A shell script file run.sh has also been included with a sample code. To use it:

sh run.sh 

The run.sh file looks like this:

./build/hmap2obj/hmap2obj \
./example_screenshots/input.png \
1081 \
1081 \
./output.obj \
2 \
2 \
10

Further you can use an online viewer to view the generated obj file.