37. Sphere + Dome

Sphere and Dome are two built-in mesh shapes.

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One Sphere and two Dome objects are created with constructors setting number of mesh divisions and radius. The Geometry has to be created.

        // *** 1. Start (Sphere, Dome1, Dome2)
        Sphere sphere = new Sphere(16,16,1);
        Geometry geoSphere = new Geometry("sphere", sphere);
        Dome dome1 = new Dome(new Vector3f(2,0,0),16,16,1);
        Geometry geoDome1 = new Geometry("dome1", dome1);
        Dome dome2 = new Dome(new Vector3f(-2,0,0),16,16,1);
        Geometry geoDome2 = new Geometry("dome2", dome2);
        geoDome2.rotate(FastMath.PI,0,0);
        // *** 1. End

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We print the number of vertex points in each structure.

        // *** 2. Start (Number of Vertex Points)
        System.out.println("The sphere has " + sphere.getVertexCount() +
                " vertices.");
        System.out.println("The dome1 has " + dome1.getVertexCount() +
                " vertices.");
        System.out.println("The dome2 has " + dome2.getVertexCount() +
                " vertices.");
        // *** 2. End

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The three Geometries are set as blue, red or green.

        // *** 3. Start (Materials - Blue, Red, Green)
        Material mat = new Material(assetManager, 
                "Common/MatDefs/Light/Lighting.j3md");
        mat.setBoolean("UseMaterialColors",true);
        mat.setColor("Diffuse",ColorRGBA.Blue);
        mat.setColor("Specular",ColorRGBA.White);
        geoSphere.setMaterial(mat);
        Material mat1 = new Material(assetManager, 
                "Common/MatDefs/Light/Lighting.j3md");
        mat1.setBoolean("UseMaterialColors",true);
        mat1.setColor("Diffuse",ColorRGBA.Red);
        mat1.setColor("Specular",ColorRGBA.White);
        geoDome1.setMaterial(mat1);
        Material mat2 = new Material(assetManager, 
                "Common/MatDefs/Light/Lighting.j3md");
        mat2.setBoolean("UseMaterialColors",true);
        mat2.setColor("Diffuse",ColorRGBA.Green);
        mat2.setColor("Specular",ColorRGBA.White);
        geoDome2.setMaterial(mat2);
        // *** 3. End

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// JMonkey37.java

package mygame;

import com.jme3.app.SimpleApplication;
import com.jme3.light.SpotLight;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.FastMath;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.Geometry;
import com.jme3.scene.shape.Dome;
import com.jme3.scene.shape.Sphere;

public class JMonkey37 extends SimpleApplication {

    public static void main(String[] args) {
        JMonkey37 app = new JMonkey37();
        app.start();
    }

    @Override
    public void simpleInitApp() {
        flyCam.setEnabled(false);
        viewPort.setBackgroundColor(ColorRGBA.White);
        setDisplayFps(false);
        setDisplayStatView(false);
        // *** 1. Start (Sphere, Dome1, Dome2)
        Sphere sphere = new Sphere(16,16,1);
        Geometry geoSphere = new Geometry("sphere", sphere);
        Dome dome1 = new Dome(new Vector3f(2,0,0),16,16,1);
        Geometry geoDome1 = new Geometry("dome1", dome1);
        Dome dome2 = new Dome(new Vector3f(-2,0,0),16,16,1);
        Geometry geoDome2 = new Geometry("dome2", dome2);
        geoDome2.rotate(FastMath.PI,0,0);
        // *** 1. End
        // *** 2. Start (Number of Vertex Points)
        System.out.println("The sphere has " + sphere.getVertexCount() +
                " vertices.");
        System.out.println("The dome1 has " + dome1.getVertexCount() +
                " vertices.");
        System.out.println("The dome2 has " + dome2.getVertexCount() +
                " vertices.");
        // *** 2. End

        // *** 3. Start (Materials - Blue, Red, Green)
        Material mat = new Material(assetManager, 
                "Common/MatDefs/Light/Lighting.j3md");
        mat.setBoolean("UseMaterialColors",true);
        mat.setColor("Diffuse",ColorRGBA.Blue);
        mat.setColor("Specular",ColorRGBA.White);
        geoSphere.setMaterial(mat);
        Material mat1 = new Material(assetManager, 
                "Common/MatDefs/Light/Lighting.j3md");
        mat1.setBoolean("UseMaterialColors",true);
        mat1.setColor("Diffuse",ColorRGBA.Red);
        mat1.setColor("Specular",ColorRGBA.White);
        geoDome1.setMaterial(mat1);
        Material mat2 = new Material(assetManager, 
                "Common/MatDefs/Light/Lighting.j3md");
        mat2.setBoolean("UseMaterialColors",true);
        mat2.setColor("Diffuse",ColorRGBA.Green);
        mat2.setColor("Specular",ColorRGBA.White);
        geoDome2.setMaterial(mat2);
        // *** 3. End
     
        /** A cone-shaped spotlight with location, direction, range */
        SpotLight spot = new SpotLight(); 
        spot = new SpotLight(); 
        spot.setSpotRange(100); 
        spot.setSpotOuterAngle(20 * FastMath.DEG_TO_RAD); 
        spot.setSpotInnerAngle(15 * FastMath.DEG_TO_RAD); 
        spot.setDirection(cam.getDirection()); 
        spot.setPosition(cam.getLocation()); 
        rootNode.addLight(spot); 

        rootNode.attachChild(geoSphere);
        rootNode.attachChild(geoDome1);
        rootNode.attachChild(geoDome2);
    }

    @Override
    public void simpleUpdate(float tpf) {
        rootNode.rotate(2*tpf,tpf,2*tpf);
    }

    @Override
    public void simpleRender(RenderManager rm) {
    }
}

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Output: