obj2schematic

Convert Wavefront .obj file to Minecraft .schematic file

input .obj

output .schematic

Supported .obj format

1. geometric vertices with (x, y, z, r, g, b)

From Wavefront .obj file Wiki

Geometric vertex A vertex can be specified in a line starting with the letter v. That is followed by (x,y,z[,w]) coordinates. W is optional and defaults to 1.0. Some applications support vertex colors, by putting red, green and blue values after x y and z. The color values range from 0 to 1.

.obj sample

# v (x) (y) (z) (red) (green) (blue)
v -0.3438 -0.1250 0.0312 0.4563 0.3357 0.2624
v -0.3438 -0.1250 0.0296 0.4552 0.3348 0.2617
v -0.3438 -0.1256 0.0312 0.4548 0.3343 0.2613
v -0.3438 -0.1250 0.0369 0.4579 0.3367 0.2631
v -0.3444 -0.1172 0.0234 0.4736 0.3508 0.2737
v -0.3438 -0.1172 0.0186 0.4751 0.3515 0.2738
v -0.3438 -0.1223 0.0234 0.4610 0.3400 0.2655
v -0.3448 -0.1172 0.0312 0.4752 0.3522 0.2750
v -0.3438 -0.1247 0.0391 0.4596 0.3380 0.2640
v -0.3446 -0.1172 0.0391 0.4747 0.3515 0.2741
:

2. .obj with .mtl

.obj sample

# OBJ File:

mtllib ./result.mtl

# vertices:
v -9.1863 9.1863 -5.0000
v -8.8947 9.1863 -5.0000
v -8.6904 9.2796 -6.0667
:

# vertice textures:
vt 0.0000 1.0000
vt 0.0159 1.0000
vt 0.0317 1.0000
:

# vertice normals:
vn -0.0000 0.0000 1.0000
vn -0.0000 0.0000 1.0000
vn -0.0000 0.0000 1.0000
:

# faces:

usemtl tex
f 1/1/1 65/65/65 4097/4097/4097
f 2/2/2 66/66/66 4098/4098/4098
f 3/3/3 67/67/67 4099/4099/4099
:

.mtl sample

newmtl tex
Ka 1.0000 1.0000 1.0000
Kd 1.0000 1.0000 1.0000
Ks 0.0000 0.0000 0.0000
d 1.0
illum 0
map_Kd ./img.png

How to Use

1. Clone this repo

$ git clone https://github.com/takecx/obj2schematic.git
$ cd obj2schematic

2. Create Environment

You should create python environment using requirements.txt.

$ conda create -n obj2schematic python=3.7
$ conda activate obj2schematic
$ pip install -r requirements.txt

3. Prepare input .obj file

Put input .obj file to ./data/ dir for example.

4. Run script

Run Obj2SchematicConverter.py with some arguments.

$ python Obj2SchemticConverter.py (.obj_file) --output_dir (output dir) --h_max (height max value) --w_max (width max value)

Arguments

1. input .obj file (required)
2. --output_dir : Output dir of generated .schematic file (optional)
3. --h_max : max height of converted schematic (optional)
4. --w_max : max width(length) of converted schematic (optional)

For example,

• input .obj file : ./data/sample_data.obj
• --output_dir : ./output/
• --h_max : 100
• --w_max : 150

then, you run

$ python Obj2SchemticConverter.py ./data/sample_data.obj --output_dir ./output/ --h_max 100 --w_max 150

5. Import .schematic to your Minecraft World!!

Import generated .schematic file to your own Minecraft World using WorldEdit mod.