How To Animate An Object Rotating In Jme 3

Lesson seven: Animation

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        // most applications volition want to extend the SimpleGame grade             import com.jme.app.SimpleGame;                          // a vector containing 3 bladder numbers;             //   used to store positions and translations             import com.jme.math.Vector3f;             import com.jme.math.Quaternion;             import com.jme.math.FastMath;                          // geometric shapes used in program             import com.jme.scene.shape.Box;                          // use predefined colors and create custom colors             import com.jme.renderer.ColorRGBA;                          // work with bones materials             import com.jme.scene.state.MaterialState;                          // process user input             import com.jme.input.InputHandler;             import com.jme.input.KeyInput;             import com.jme.input.KeyBindingManager;             import com.jme.input.FirstPersonHandler;                          // an internal vertex of the scenegraph tree;             //  use to group together objects,             //  utilize render settings, which affects all child vertices             import com.jme.scene.Node;             import com.jme.scene.Spatial;             import com.jme.scene.Geometry;                          // animate spatials             import com.jme.blitheness.SpatialTransformer;                          /**              *   Demonstrate two types of movement:              *   translation (uses Vectors)              *   and rotation (using Quaternions).              */             public class AnimDemo extends SimpleGame             {                // a geometric shape that will exist rendered                Box myBox;                SpatialTransformer myMover;                             public static void principal(String[] args)                {                    // create an instance of this programme                    AnimDemo app = new AnimDemo();                                 // before the main program starts, brandish the graphics configuration window                    //   where the user tin choose amongst screen resolution, colour depth, and full screen options                    app.setConfigShowMode(ConfigShowMode.AlwaysShow);                                 // The start() method runs simpleInitGame(),                    //   so starts the game loop: simpleUpdate(), then simpleRender()                    // To stop game loop, telephone call finish()                    app.start();                }                             protected void simpleInitGame()                {                    // brand the standard cursor visible.                    org.lwjgl.input.Mouse.setGrabbed(fake);                    // SimpleGame class defaults mouse behavior to rotate view; here we disable this.                    ((FirstPersonHandler)input).getMouseLookHandler().setEnabled(false);                                 // create a material to utilize to geometric objects, use objects' default colour,                    //  apply to front and back, and assign rendering to root node                    MaterialState customMaterial = brandish.getRenderer().createMaterialState();                    customMaterial.setColorMaterial(MaterialState.ColorMaterial.AmbientAndDiffuse);                    customMaterial.setMaterialFace(MaterialState.MaterialFace.FrontAndBack);                    rootNode.setRenderState(customMaterial);                                 myBox = new Box("south", new Vector3f(0,0,0), 1, ane, 1 );                    myBox.setRandomColors();                    rootNode.attachChild( myBox );                                 buildInput();                                 myMover = new SpatialTransformer();                                 // parameter: number of spatial objects this transformer will motility.                    myMover = new SpatialTransformer(1);                                 // load spatial(due south) to be affected into the transformer.                    // parameters: spatial variable, index in SpatialTransformer (like an array), -1 (always).                    myMover.setObject( myBox, 0, -1 );                                 // draw transformations of each object at each betoken in fourth dimension.                    // parameters: index in SpatialTransformer, fourth dimension at which this state should be reached,                    //   and Vector3f||Quaternion||Vector3f (for Position||Rotation||Scale)                    myMover.setPosition( 0, 0, new Vector3f(0,0,0) );                    myMover.setRotation( 0, 0, new Quaternion() );                    myMover.setScale( 0, 0, new Vector3f(1,one,one) );                                 // from starting time until given time, the given transformation volition be continuously applied                    myMover.setPosition( 0, 1, new Vector3f(5,5,v) );                    myMover.setPosition( 0, ii, new Vector3f(0,0,0) );                    myMover.setRotation( 0, 2, new Quaternion() );                    myMover.setRotation( 0, iii, new Quaternion().fromAngleAxis(FastMath.PI / 3, new Vector3f(1,i,1)) );                    myMover.setScale( 0, iii, new Vector3f(1,1,1) );                    myMover.setScale( 0, four, new Vector3f(1,3,one) );                    myMover.setScale( 0, 5, new Vector3f(iii,3,one) );                    myMover.setScale( 0, half dozen, new Vector3f(ane,1,i) );                    myMover.setPosition( 0, 6.0f, new Vector3f(0,0,0) );                    myMover.setPosition( 0, vi.5f, new Vector3f(2,0,0) );                    myMover.setPosition( 0, vii.0f, new Vector3f(2,2,0) );                    myMover.setPosition( 0, 7.5f, new Vector3f(0,2,0) );                    myMover.setPosition( 0, 8.0f, new Vector3f(0,0,0) );                                 // automatically generate all of the small, incrimental values not specified above. Makes the animation dainty and smooth                    myMover.interpolateMissing();                    // choose the object(southward) to exist controlled by this SpatialTransformer                    // Notation: user will not be able to move myBox unless myBox.clearControllers() is called                    myBox.addController(myMover);                    // don't start animator until nosotros say so.                    myMover.setActive(faux);                }                             protected void simpleUpdate()                {                    effort {   Thread.sleep(g/120);   } // force decrease in frames per second                    catch (Exception e) {             }                                 processInput();                }                             protected void simpleRender()                {                    // nothing to add                }                             // create input bindings                public void buildInput()                {                    // remove all pre-existing key assignments                    // KeyBindingManager.getKeyBindingManager().removeAll();                                 KeyBindingManager.getKeyBindingManager().set up( "exit", KeyInput.KEY_ESCAPE );                    KeyBindingManager.getKeyBindingManager().set( "animateBox", KeyInput.KEY_1 );                    KeyBindingManager.getKeyBindingManager().set up( "animatePause", KeyInput.KEY_2 );                    KeyBindingManager.getKeyBindingManager().set( "animateRestart",  KeyInput.KEY_3 );                    KeyBindingManager.getKeyBindingManager().ready( "animateStats", KeyInput.KEY_4 );                }                             // process input entered since concluding update.                public void processInput()                {                    // to determine if SpatialTransformer is currently animative                    //  (because it remains agile even when animation sequence has completed)                    boolean currentlyTransforming =                    ( myMover.getCurTime() > 0 && myMover.getCurTime() < myMover.getMaxTime() );                                 if (KeyBindingManager.getKeyBindingManager().isValidCommand("animateBox", false))                        myMover.setActive(true);                                 if (KeyBindingManager.getKeyBindingManager().isValidCommand("animatePause", false))                        myMover.setActive( !myMover.isActive() );                                 if (KeyBindingManager.getKeyBindingManager().isValidCommand("animateRestart", false))                        myMover.setCurTime( 0 );                                 if (KeyBindingManager.getKeyBindingManager().isValidCommand("animateStats", false))                    {                        Organization.out.println("Animator fourth dimension:   " + myMover.getCurTime() );                        System.out.println("Animator active? " + myMover.isActive() );                    }                }             }      

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Source: https://home.adelphi.edu/~ni18128/jmet/tutorials/lesson7.html

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