26. Texture

We can apply texture images to materials.

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First some application settings are changed, such as the title. We also disable the display of stats and fps. We had earlier used a different method.

        // *** 1. Start (Application settings, start)
        AppSettings setting= new AppSettings(true);
        setting.setTitle("Brick Texture!");
        JMonkey26 app = new JMonkey26();
        app.setDisplayFps(false);
        app.setDisplayStatView(false);
        app.setSettings(setting);
        app.start();
        // *** 1. End

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The background is set as white. A box of dimension 2 by 2 by 2 is created. The material is unshaded. It next obtains a texture.

        // *** 2. Start (Background, box, material)
        viewPort.setBackgroundColor(ColorRGBA.White);
        Box b = new Box(1, 1, 1);
        Geometry geom = new Geometry("Box", b);
        Material mat = new Material(assetManager,
                "Common/MatDefs/Misc/Unshaded.j3md");
        // *** 2. End

---

The texture provides a color map so it is not a single color. The file 'brick.jpg' is copied to the Interface folder in the project.

        // *** 3. Start (Texture)
        Texture tex = assetManager.loadTexture("Interface/brick.jpg");
        mat.selectTechnique("Default", renderManager);
        mat.setColor("Color", ColorRGBA.White);
        mat.setTexture("ColorMap", tex);
        geom.setMaterial(mat);
        // *** 3. End

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In the simpleUpdate, which is run for every frame, the rotation angle is slightly changed, randomly in either x, y, or z direction.

        // *** 4. Start (Random Rotate)
        switch (FastMath.nextRandomInt(0, 2)) {
            case 0:
                rootNode.rotate(30*tpf*FastMath.DEG_TO_RAD,0,0);
                break;
            case 1:
                rootNode.rotate(0, 30*tpf*FastMath.DEG_TO_RAD, 0);
                break;
            case 2:
                rootNode.rotate(0,0,30*tpf*FastMath.DEG_TO_RAD);
                break;
        }
        // *** 4. End

---

// JMonkey26.java

package mygame;

import com.jme3.app.SimpleApplication;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.FastMath;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.Geometry;
import com.jme3.scene.shape.Box;
import com.jme3.system.AppSettings;
import com.jme3.texture.Texture;

public class JMonkey26 extends SimpleApplication {
    public static void main(String[] args) {
        // *** 1. Start (Application settings, start)
        AppSettings setting= new AppSettings(true);
        setting.setTitle("Brick Texture!");
        JMonkey26 app = new JMonkey26();
        app.setDisplayFps(false);
        app.setDisplayStatView(false);
        app.setSettings(setting);
        app.start();
        // *** 1. End
    }

    @Override
    public void simpleInitApp() {
        flyCam.setEnabled(false);
        // *** 2. Start (Background, box, material)
        viewPort.setBackgroundColor(ColorRGBA.White);
        Box b = new Box(1, 1, 1);
        Geometry geom = new Geometry("Box", b);
        Material mat = new Material(assetManager,
                "Common/MatDefs/Misc/Unshaded.j3md");
        // *** 2. End
        // *** 3. Start (Texture)
        Texture tex = assetManager.loadTexture("Interface/brick.jpg");
        mat.selectTechnique("Default", renderManager);
        mat.setColor("Color", ColorRGBA.White);
        mat.setTexture("ColorMap", tex);
        geom.setMaterial(mat);
        // *** 3. End
        rootNode.attachChild(geom);
    }

    @Override
    public void simpleUpdate(float tpf) {
        // *** 4. Start (Random Rotate)
        switch (FastMath.nextRandomInt(0, 2)) {
            case 0:
                rootNode.rotate(30*tpf*FastMath.DEG_TO_RAD,0,0);
                break;
            case 1:
                rootNode.rotate(0, 30*tpf*FastMath.DEG_TO_RAD, 0);
                break;
            case 2:
                rootNode.rotate(0,0,30*tpf*FastMath.DEG_TO_RAD);
                break;
        }
        // *** 4. End
    }

    @Override
    public void simpleRender(RenderManager rm) {
        //TODO: add render code
    }
}

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Output: