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https://github.com/andychase/fabian-csg
(Written by Fabian) Constructive Shape Geometry for jme3
https://github.com/andychase/fabian-csg
Last synced: 1 day ago
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(Written by Fabian) Constructive Shape Geometry for jme3
- Host: GitHub
- URL: https://github.com/andychase/fabian-csg
- Owner: andychase
- License: other
- Created: 2014-07-27T00:20:19.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2015-03-21T19:37:50.000Z (almost 10 years ago)
- Last Synced: 2024-06-11T17:09:47.241Z (7 months ago)
- Language: Java
- Homepage:
- Size: 1.27 MB
- Stars: 7
- Watchers: 3
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- License: LICENSE
Awesome Lists containing this project
README
# Fabian CSG
*A fork of this project exists here: *
Fabian CSG ([Constructive Shape Geometry](http://en.wikipedia.org/wiki/Constructive_solid_geometry)) is a library for [jMonkeyEngine](http://jmonkeyengine.org) that allows creating dynamic models with [boolean operations](http://en.wikipedia.org/wiki/Boolean_operations_on_polygons).
## Features
- [x] Fully ported csg.js library (MIT license) to Java, using JMonkeyEngine’s Vector3f.
- [x] Added function to produce a Mesh from the CSG object.
- [x] Made CSG.shapeName( static functions into classes that extend CSG.
- [x] Created CSGNode class, which is used to sequentially add CSG brushes and output 1 geometry (Soon to be node)
- [x] Created a MeshBrush, which reads the TexCoord, Normal, Position and Index buffers of a Mesh to product a shape which can be used for CSG.
- [ ] Add Material support on a per-brush level.
- [ ] Add UV calculations to standard shapes (Cube, Sphere, Cylinder)
- [ ] LOD support? (Or polygon reduction)
## Usage
```java
Material mat_csg = assetManager.loadMaterial(“Materials/WallCover/BrownBricks.j3m”);
mat_csg.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Off);
CSGNode csg = new CSGNode();
csg.setMaterial(mat_csg);
CubeBrush base = new CubeBrush(new Vector3f(0f, 0f, 0f), new Vector3f(1f, 1f, 1f));
csg.addBrush(base);
SphereBrush hole = new SphereBrush(new Vector3f(0f, 0f, 0f), 1.3f, 16, 8);
hole.setType(BrushType.SUBTRACTIVE);
csg.addBrush(hole);
csg.regenerate();
csg.move(0f, 1f, 0f);
this.app.getRootNode().attachChild(csg);
```
```java
Material mat_csg = assetManager.loadMaterial(“Materials/WallCover/BrownBricks.j3m”);
mat_csg.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Off);
CSGNode csg = new CSGNode();
csg.setMaterial(mat_csg);
Spatial s = assetManager.loadModel(“Models/Characters/Goblin.j3o”);
ArrayList g = new ArrayList<>();
GeometryBatchFactory.gatherGeoms(s, g);
Mesh m = new Mesh();
GeometryBatchFactory.mergeGeometries(g, m);
MeshBrush mb = new MeshBrush(m);
csg.addBrush(mb);
CubeBrush base = new CubeBrush(new Vector3f(0f, 0.5f, 0f), new Vector3f(1f, 0.1f, 1f));
base.setType(BrushType.SUBTRACTIVE);
csg.addBrush(base);
csg.regenerate();
csg.move(0f, 1f, 0f);
this.app.getRootNode().attachChild(csg);
```