Example usage for com.badlogic.gdx.math EarClippingTriangulator computeTriangles

Introduction

In this page you can find the example usage for com.badlogic.gdx.math EarClippingTriangulator computeTriangles.

Prototype

public ShortArray computeTriangles(float[] vertices) 

Source Link

Usage

From source file:com.hajnar.GravityShip.GameObjects.Terrain.java

License:Apache License

public void generateMeshes() {
    ArrayList<Fixture> terrainFixtures = objectBody.getFixtureList();
    Vector2 boxVertex = new Vector2();
    meshes = new ArrayList<Mesh>();
    boundingBoxes = new ArrayList<BoundingBox>();
    EarClippingTriangulator ear = new EarClippingTriangulator();

    for (Fixture terrainFixture : terrainFixtures) {
        PolygonShape shape = (PolygonShape) terrainFixture.getShape();
        boxVertex = new Vector2();
        int vc = shape.getVertexCount();
        ArrayList<Vector2> boxVertices = new ArrayList<Vector2>();
        ArrayList<Vector2> triaBoxVertices = new ArrayList<Vector2>();

        for (int i = 0; i < vc; i++) {
            shape.getVertex(i, boxVertex);
            boxVertex = objectBody.getWorldPoint(boxVertex).mul(Helper.BOX_TO_WORLD);
            boxVertices.add(boxVertex.cpy());
        }//ww w .ja  v a2s  .  com
        triaBoxVertices = (ArrayList<Vector2>) ear.computeTriangles(boxVertices);
        float[] meshVertices = new float[triaBoxVertices.size() * 4];
        short[] meshIndices = new short[triaBoxVertices.size()];
        for (int i = 0; i < triaBoxVertices.size(); i++) {
            meshVertices[i * 4] = triaBoxVertices.get(i).x;
            meshVertices[i * 4 + 1] = triaBoxVertices.get(i).y;
            meshVertices[i * 4 + 2] = triaBoxVertices.get(i).x * TEXTURE_SCALE;
            meshVertices[i * 4 + 3] = triaBoxVertices.get(i).y * TEXTURE_SCALE;
            meshIndices[i] = (short) i;
        }

        Mesh mesh = new Mesh(true, triaBoxVertices.size(), triaBoxVertices.size(),
                new VertexAttribute(Usage.Position, 2, ShaderProgram.POSITION_ATTRIBUTE),
                new VertexAttribute(Usage.TextureCoordinates, 2, ShaderProgram.TEXCOORD_ATTRIBUTE + "0"));
        mesh.setVertices(meshVertices);
        mesh.setIndices(meshIndices);
        meshes.add(mesh);
        boundingBoxes.add(mesh.calculateBoundingBox());
    }
}

---

From source file:dk.gruppeseks.bodtrd.engine.Game.java

private void drawFoV(float[] shape) {
    EarClippingTriangulator triangulator = new EarClippingTriangulator();
    ShortArray triangleIndices = triangulator.computeTriangles(shape);
    PolygonRegion polyReg = new PolygonRegion(_textureRegion, shape, triangleIndices.toArray());
    PolygonSprite polySprite = new PolygonSprite(polyReg);

    _polyBatch.begin();//from w  ww.  j a v  a2  s  . co m
    polySprite.draw(_polyBatch);
    _polyBatch.end();

    _shapeRenderer.setProjectionMatrix(_gameCamera.combined);
    _shapeRenderer.begin(ShapeType.Line);
    _shapeRenderer.setColor(Color.BROWN);
    _shapeRenderer.polygon(shape);
    _shapeRenderer.end();

}

---