Difference between revisions of "Loading 3ds Keyframes from Blender"

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m
Line 42: Line 42:
 
         Animation anim = new Animation(5);
 
         Animation anim = new Animation(5);
 
         anim.createSubSequence("idle");
 
         anim.createSubSequence("idle");
         anim.addKeyFrame(thing.getMesh());  
+
         anim.addKeyFrame(thing.getMesh().cloneMesh(true));  
 
        
 
        
 
         anim.createSubSequence("walk");
 
         anim.createSubSequence("walk");

Revision as of 17:23, 7 October 2014

3ds files can also be used for building an animation. In this view I have rigged the man from the previous tutorial and done a walk animation. Although there are 5 key frames in the walk animation in Blender, the last and first are the same so only four are necessary. The key frames are exported one at a time by clicking on the keyframe and then selecting the model rather than the skeleton and exporting the same way. I named these walk1- walk4. Bl anim.jpg

In the code below an animation sequence is added to the object and there is a new function called doAnim() which moves the key frames. The indexes for the animation really start at one, since a zero is a combination of all sequences. Here the animation is set for walk (2); I started loading the animation walk sequence at walk2 because it matches an idle better for a smoother transition from idle to walk.


import com.threed.jpct.*;
import javax.swing.*;


public class HelloWorldSoftware {

    private String[] textures = {"bman"};
    private String thingName = "bman";
    private int thingScale = 1;
    private World world;
    private FrameBuffer buffer;
    private Object3D thing;
    private JFrame frame;
    private int an = 2;//do a walk animation
    private float ind = 0;

    public static void main(String[] args) throws Exception {
        new HelloWorldSoftware().loop();
    }

    public HelloWorldSoftware() throws Exception {

        frame = new JFrame("Blender Model Loading");
        frame.setSize(350, 300);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
        world = new World();
        world.setAmbientLight(150, 150, 150);
        for (int i = 0; i < textures.length; ++i) {
            TextureManager.getInstance().addTexture(textures[i] + ".jpg", new Texture("res/" + textures[i] + ".jpg"));
        }

        thing = loadModel("res/" + thingName + ".3ds", thingScale);

        Animation anim = new Animation(5);
        anim.createSubSequence("idle");
        anim.addKeyFrame(thing.getMesh().cloneMesh(true)); 
       
        anim.createSubSequence("walk");
        anim.addKeyFrame(loadModel("res/" + "walk2.3ds", 1).getMesh());
        anim.addKeyFrame(loadModel("res/" + "walk3.3ds", 1).getMesh());
        anim.addKeyFrame(loadModel("res/" + "walk4.3ds", 1).getMesh());
        anim.addKeyFrame(loadModel("res/" + "walk1.3ds", 1).getMesh());
  
        thing.setAnimationSequence(anim);
        world.addObject(thing);      
        world.getCamera().setPosition(0, 0, -20);
        world.getCamera().lookAt(thing.getTransformedCenter());
    }

    private void loop() throws Exception {
        buffer = new FrameBuffer(350, 300, FrameBuffer.SAMPLINGMODE_NORMAL);

        while (frame.isShowing()) {
            doAnim();  
            buffer.clear(java.awt.Color.BLUE);            
            world.renderScene(buffer);
          
            world.draw(buffer);
            buffer.update();
            buffer.display(frame.getGraphics());
            Thread.sleep(10);
        }
        buffer.disableRenderer(IRenderer.RENDERER_OPENGL);
        buffer.dispose();
        frame.dispose();
        System.exit(0);
    }

    private Object3D loadModel(String filename, float scale) {
        Loader.setVertexOptimization(false);
        Object3D[] model = Loader.load3DS(filename, scale);

        Object3D o3d = new Object3D(0);

        Object3D temp = null;

        for (int i = 0; i < model.length; i++) {
            temp = model[i];
            temp.setCenter(SimpleVector.ORIGIN);
            temp.rotateX((float)( -.5*Math.PI));
            temp.rotateMesh();
            temp.setRotationMatrix(new Matrix());
            o3d = Object3D.mergeObjects(o3d, temp);
            o3d.build();
        }
        return o3d;
    }
    public void doAnim() {
        {
            ind += 0.018f;
            if (ind > 1f) {
                ind -= 1f;
            }
        }
        thing.animate(ind, an);
    }
}