Examples of com.jme3.math.Matrix4f

com.jme3.math.Vector2f
Matrix4f defines and maintains a 4x4 matrix in row major order. This matrix is intended for use in a translation and rotational capacity. It provides convenience methods for creating the matrix from a multitude of sources. Matrices are stored assuming column vectors on the right, with the translation in the rightmost column. Element numbering is row,column, so m03 is the zeroth row, third column, which is the "x" translation part. This means that the implicit storage order is column major. However, the get() and set() functions on float arrays default to row major order! @author Mark Powell @author Joshua Slack

        float angle = FastMath.acos(planeNormal.dot(Vector3f.UNIT_Y));
        planeNormal.crossLocal(Vector3f.UNIT_Y).normalizeLocal();// planeNormal is the rotation axis now
        Quaternion pointRotation = new Quaternion();
        pointRotation.fromAngleAxis(angle, planeNormal);


        Matrix4f m = new Matrix4f();
        m.setRotationQuaternion(pointRotation);
        m.setTranslation(firstCurvePoint);


        float[] temp = new float[] { 0, 0, 0, 1 };
        Vector3f[] verts = new Vector3f[startingLinePoints.length];
        for (int j = 0; j < verts.length; ++j) {
            temp[0] = startingLinePoints[j].x;
            temp[1] = startingLinePoints[j].y;
            temp[2] = startingLinePoints[j].z;
            temp = m.mult(temp);// the result is stored in the array
            if (fixUpAxis) {
                verts[j] = new Vector3f(temp[0], -temp[2], temp[1]);
            } else {
                verts[j] = new Vector3f(temp[0], temp[1], temp[2]);
            }

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     * @return objects transformation relative to its parent
     */
    public Transform getTransformation(Structure objectStructure, BlenderContext blenderContext) {
        TempVars tempVars = TempVars.get();


        Matrix4f parentInv = tempVars.tempMat4;
        Pointer pParent = (Pointer) objectStructure.getFieldValue("parent");
        if (pParent.isNotNull()) {
            Structure parentObjectStructure = (Structure) blenderContext.getLoadedFeature(pParent.getOldMemoryAddress(), LoadedFeatureDataType.LOADED_STRUCTURE);
            this.getMatrix(parentObjectStructure, "obmat", fixUpAxis, parentInv).invertLocal();
        } else {
            parentInv.loadIdentity();
        }


        Matrix4f globalMatrix = this.getMatrix(objectStructure, "obmat", fixUpAxis, tempVars.tempMat42);
        Matrix4f localMatrix = parentInv.multLocal(globalMatrix);


        this.getSizeSignums(objectStructure, tempVars.vect1);


        localMatrix.toTranslationVector(tempVars.vect2);
        localMatrix.toRotationQuat(tempVars.quat1);
        localMatrix.toScaleVector(tempVars.vect3);


        Transform t = new Transform(tempVars.vect2, tempVars.quat1.normalizeLocal(), tempVars.vect3.multLocal(tempVars.vect1));
        tempVars.release();
        return t;
    }

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     * @param fixUpAxis
     *            tells if the Y axis is a UP axis
     * @return the required matrix
     */
    public Matrix4f getMatrix(Structure structure, String matrixName, boolean fixUpAxis) {
        return this.getMatrix(structure, matrixName, fixUpAxis, new Matrix4f());
    }

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            globalBoneMatrix.multLocal(BONE_ARMATURE_TRANSFORMATION_MATRIX);
        }


        Spatial armature = (Spatial) objectHelper.toObject(blenderContext.getFileBlock(armatureObjectOMA).getStructure(blenderContext), blenderContext);
        ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);
        Matrix4f armatureWorldMatrix = constraintHelper.toMatrix(armature.getWorldTransform(), new Matrix4f());


        // and now compute the final bone matrix in world space
        globalBoneMatrix = armatureWorldMatrix.mult(globalBoneMatrix);


        // create the children
        List<Structure> childbase = ((Structure) boneStructure.getFieldValue("childbase")).evaluateListBase();
        for (Structure child : childbase) {
            children.add(new BoneContext(child, armatureObjectOMA, this, blenderContext));

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        ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);


        Structure skeletonOwnerObjectStructure = (Structure) blenderContext.getLoadedFeature(skeletonOwnerOma, LoadedFeatureDataType.LOADED_STRUCTURE);
        // I could load 'imat' here, but apparently in some older blenders there were bugs or unfinished functionalities that stored ZERO matrix in imat field
        // loading 'obmat' and inverting it makes us avoid errors in such cases
        Matrix4f invertedObjectOwnerGlobalMatrix = objectHelper.getMatrix(skeletonOwnerObjectStructure, "obmat", blenderContext.getBlenderKey().isFixUpAxis()).invertLocal();
        if (objectHelper.isParent(skeletonOwnerOma, armatureObjectOMA)) {
            boneMatrixInModelSpace = globalBoneMatrix.mult(invertedObjectOwnerGlobalMatrix);
        } else {
            boneMatrixInModelSpace = invertedObjectOwnerGlobalMatrix.mult(globalBoneMatrix);
        }


        Matrix4f boneLocalMatrix = parent == null ? boneMatrixInModelSpace : parent.boneMatrixInModelSpace.invert().multLocal(boneMatrixInModelSpace);


        Vector3f poseLocation = parent == null || !this.is(CONNECTED_TO_PARENT) ? boneLocalMatrix.toTranslationVector() : new Vector3f(0, parent.length, 0);
        Quaternion rotation = boneLocalMatrix.toRotationQuat().normalizeLocal();
        Vector3f scale = boneLocalMatrix.toScaleVector();


        bone.setBindTransforms(poseLocation, rotation, scale);
        for (BoneContext child : children) {
            bone.addChild(child.buildBone(bones, skeletonOwnerOma, blenderContext));
        }

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public class Utilities {
  
  
  public static void swapCulling(Geometry geom){
    
    Matrix4f worldMatrix = geom.getWorldMatrix();
        float[] f1 = worldMatrix.getColumn(0);
    float[] f2 = worldMatrix.getColumn(1);
    float[] f3 = worldMatrix.getColumn(2);
        Vector3f v1 = new Vector3f(f1[0], f1[1], f1[2]);
        Vector3f v2 = new Vector3f(f2[0], f2[1], f2[2]);
        Vector3f v3 = new Vector3f(f3[0], f3[1], f3[2]);


        Vector3f cross = v1.cross(v2);

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    geom.setMaterial(mat);
    camNode.attachChild(geom);
  }


  public void update(float tpf) {
    Matrix4f cameraToWorld = geom.getWorldMatrix();


    Vector3f cameraPosition = geom.getParent().getWorldTranslation();


    mat.setMatrix4("cameraToWorld", cameraToWorld);
    mat.setVector3("cameraPosition", cameraPosition);

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  public void startDemoMotion(Ship ship) {
    motionPath = new ShipDemoMotion();
    motionTrack = new ShipMotionTrack(ship, motionPath);
    //motionTrack.setDirectionType(Direction.Path);
    motionTrack.setDirectionType(Direction.PathAndRotation);
    motionTrack.setRotation(new Quaternion().fromAngles(0, 0, 0));
    motionTrack.setSpeed(0.5f);
    motionTrack.setLoopMode(LoopMode.Loop);
    motionTrack.pause();
    timeLeft = 10;
  }

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            }
        }


        newUp.set(newDirection).crossLocal(newLeft).normalizeLocal();
        
    Quaternion r = new Quaternion().fromAxes(newLeft, newUp, newDirection);
    r.normalize();
    this.setLocalRotation(r);    
  }

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    ti.onNew(0, 0, 0);
    gestureSystem.update(1);
    ti.onRelease(0);
    gestureSystem.update(1);
    //printList(clickVectors);
    Assert.assertTrue(clickVectors.get(0).equals(new Vector2f(0,0)));
    Assert.assertTrue(zoomValues.isEmpty());
  }

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Related Classes of com.jme3.math.Matrix4f

clj3D.Utilities

clj3D.Viewer

clj3D.Viewer$AppActionListener

com.jme3.animation.SkeletonControl

com.jme3.scene.plugins.blender.animations.BoneContext

com.jme3.scene.plugins.blender.constraints.ConstraintHelper

com.jme3.scene.plugins.blender.objects.ObjectHelper

com.jme3.shadow.ShadowUtil

com.jme3.swingGui.JMEDesktop

com.jme3.util.TempVars

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