Java Code Examples for com.jme3.math.Vector3f#set()

/**
 * This method fills the point with coordinates of randomly selected point on a random face.
 * The normal param is filled with selected face's normal.
 * @param store
 *        the variable to store with coordinates of randomly selected selected point on a random face
 * @param normal
 *        filled with selected face's normal
 */
@Override
public void getRandomPointAndNormal(Vector3f store, Vector3f normal) {
    int meshIndex = FastMath.nextRandomInt(0, vertices.size() - 1);
    // the index of the first vertex of a face (must be dividable by 3)
    int faceIndex = FastMath.nextRandomInt(0, vertices.get(meshIndex).size() / 3 - 1);
    int vertIndex = faceIndex * 3;
    // put the point somewhere between the first and the second vertex of a face
    float moveFactor = FastMath.nextRandomFloat();
    store.set(Vector3f.ZERO);
    store.addLocal(vertices.get(meshIndex).get(vertIndex));
    store.addLocal((vertices.get(meshIndex).get(vertIndex + 1).x - vertices.get(meshIndex).get(vertIndex).x) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 1).y - vertices.get(meshIndex).get(vertIndex).y) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 1).z - vertices.get(meshIndex).get(vertIndex).z) * moveFactor);
    // move the result towards the last face vertex
    moveFactor = FastMath.nextRandomFloat();
    store.addLocal((vertices.get(meshIndex).get(vertIndex + 2).x - store.x) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 2).y - store.y) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 2).z - store.z) * moveFactor);
    normal.set(normals.get(meshIndex).get(faceIndex));
}
 

/**
 * Position the GUI to the given location.
 * @param pos the position of the GUI.
 * @param dir the rotation of the GUI.
 * @param tpf the time per frame.
 */
private void positionTo(Vector3f pos, Quaternion dir, float tpf) {

	if (environment != null){
		Vector3f guiPos = guiQuadNode.getLocalTranslation();
		guiPos.set(0f, 0f, guiDistance);
		dir.mult(guiPos, guiPos);
		guiPos.x += pos.x;
		guiPos.y += pos.y + environment.getVRHeightAdjustment();
		guiPos.z += pos.z;        
		if( guiPositioningElastic > 0f && posMode != VRGUIPositioningMode.MANUAL ) {
			// mix pos & dir with current pos & dir            
			guiPos.interpolateLocal(EoldPos, guiPos, Float.min(1f, tpf * guiPositioningElastic));
			EoldPos.set(guiPos);
		}
	} else {
		throw new IllegalStateException("VR GUI manager is not attached to any environment.");
	}
}
 

private static final void findMinMax(float x0, float x1, float x2, Vector3f minMax) {
    minMax.set(x0, x0, 0);
    if (x1 < minMax.x) {
        minMax.setX(x1);
    }
    if (x1 > minMax.y) {
        minMax.setY(x1);
    }
    if (x2 < minMax.x) {
        minMax.setX(x2);
    }
    if (x2 > minMax.y) {
        minMax.setY(x2);
    }
}
 

private void setMinMax(BoundingBox bbox, boolean doMin, int axis, float value) {
    Vector3f min = bbox.getMin(null);
    Vector3f max = bbox.getMax(null);

    if (doMin) {
        min.set(axis, value);
    } else {
        max.set(axis, value);
    }

    bbox.setMinMax(min, max);
}
 

/**
 * Aligns this Billboard so that it points to the camera position.
 *
 * @param camera
 *            Camera
 */
private void rotateCameraAligned(Camera camera) {
    look.set(camera.getLocation()).subtractLocal(
            spatial.getWorldTranslation());
    // coopt left for our own purposes.
    Vector3f xzp = left;
    // The xzp vector is the projection of the look vector on the xz plane
    xzp.set(look.x, 0, look.z);

    // check for undefined rotation...
    if (xzp.equals(Vector3f.ZERO)) {
        return;
    }

    look.normalizeLocal();
    xzp.normalizeLocal();
    float cosp = look.dot(xzp);

    // compute the local orientation matrix for the billboard
    orient.set(0, 0, xzp.z);
    orient.set(0, 1, xzp.x * -look.y);
    orient.set(0, 2, xzp.x * cosp);
    orient.set(1, 0, 0);
    orient.set(1, 1, cosp);
    orient.set(1, 2, look.y);
    orient.set(2, 0, -xzp.x);
    orient.set(2, 1, xzp.z * -look.y);
    orient.set(2, 2, xzp.z * cosp);

    // The billboard must be oriented to face the camera before it is
    // transformed into the world.
    spatial.setLocalRotation(orient);
    fixRefreshFlags();
}
 

/**
 * Instantly emits available particles, up to num.
 */
public void emitParticles(int num) {
    // Force world transform to update
    this.getWorldTransform();

    TempVars vars = TempVars.get();

    BoundingBox bbox = (BoundingBox) this.getMesh().getBound();

    Vector3f min = vars.vect1;
    Vector3f max = vars.vect2;

    bbox.getMin(min);
    bbox.getMax(max);

    if (!Vector3f.isValidVector(min)) {
        min.set(Vector3f.POSITIVE_INFINITY);
    }
    if (!Vector3f.isValidVector(max)) {
        max.set(Vector3f.NEGATIVE_INFINITY);
    }

    for(int i=0;i<num;i++) {
        if( emitParticle(min, max) == null ) break;
    }

    bbox.setMinMax(min, max);
    this.setBoundRefresh();

    vars.release();
}
 

/**
 * This method fills the point with coordinates of randomly selected point on a random face.
 * @param store
 *        the variable to store with coordinates of randomly selected selected point on a random face
 */
@Override
public void getRandomPoint(Vector3f store) {
    int meshIndex = FastMath.nextRandomInt(0, vertices.size() - 1);
    // the index of the first vertex of a face (must be dividable by 3)
    int vertIndex = FastMath.nextRandomInt(0, vertices.get(meshIndex).size() / 3 - 1) * 3;
    // put the point somewhere between the first and the second vertex of a face
    float moveFactor = FastMath.nextRandomFloat();
    store.set(Vector3f.ZERO);
    store.addLocal(vertices.get(meshIndex).get(vertIndex));
    store.addLocal((vertices.get(meshIndex).get(vertIndex + 1).x - vertices.get(meshIndex).get(vertIndex).x) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 1).y - vertices.get(meshIndex).get(vertIndex).y) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 1).z - vertices.get(meshIndex).get(vertIndex).z) * moveFactor);
    // move the result towards the last face vertex
    moveFactor = FastMath.nextRandomFloat();
    store.addLocal((vertices.get(meshIndex).get(vertIndex + 2).x - store.x) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 2).y - store.y) * moveFactor, (vertices.get(meshIndex).get(vertIndex + 2).z - store.z) * moveFactor);
}
 

public static TriangleData processTriangle(int[] index,
        Vector3f[] v, Vector2f[] t) {
    TempVars tmp = TempVars.get();
    try {
        Vector3f edge1 = tmp.vect1;
        Vector3f edge2 = tmp.vect2;
        Vector2f edge1uv = tmp.vect2d;
        Vector2f edge2uv = tmp.vect2d2;
        
        Vector3f tangent = tmp.vect3;
        Vector3f binormal = tmp.vect4;
        Vector3f normal = tmp.vect5;
        
        t[1].subtract(t[0], edge1uv);
        t[2].subtract(t[0], edge2uv);
        float det = edge1uv.x * edge2uv.y - edge1uv.y * edge2uv.x;
        
        boolean normalize = false;
        if (Math.abs(det) < ZERO_TOLERANCE) {
            log.log(Level.WARNING, "Colinear uv coordinates for triangle "
                    + "[{0}, {1}, {2}]; tex0 = [{3}, {4}], "
                    + "tex1 = [{5}, {6}], tex2 = [{7}, {8}]",
                    new Object[]{index[0], index[1], index[2],
                        t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y});
            det = 1;
            normalize = true;
        }
        
        v[1].subtract(v[0], edge1);
        v[2].subtract(v[0], edge2);
        
        tangent.set(edge1);
        tangent.normalizeLocal();
        binormal.set(edge2);
        binormal.normalizeLocal();
        
        if (Math.abs(Math.abs(tangent.dot(binormal)) - 1)
                < ZERO_TOLERANCE) {
            log.log(Level.WARNING, "Vertices are on the same line "
                    + "for triangle [{0}, {1}, {2}].",
                    new Object[]{index[0], index[1], index[2]});
        }
        
        float factor = 1 / det;
        tangent.x = (edge2uv.y * edge1.x - edge1uv.y * edge2.x) * factor;
        tangent.y = (edge2uv.y * edge1.y - edge1uv.y * edge2.y) * factor;
        tangent.z = (edge2uv.y * edge1.z - edge1uv.y * edge2.z) * factor;
        if (normalize) {
            tangent.normalizeLocal();
        }
        
        binormal.x = (edge1uv.x * edge2.x - edge2uv.x * edge1.x) * factor;
        binormal.y = (edge1uv.x * edge2.y - edge2uv.x * edge1.y) * factor;
        binormal.z = (edge1uv.x * edge2.z - edge2uv.x * edge1.z) * factor;
        if (normalize) {
            binormal.normalizeLocal();
        }
        
        tangent.cross(binormal, normal);
        normal.normalizeLocal();
        
        return new TriangleData(
                tangent.clone(),
                binormal.clone(),
                normal.clone());
    } finally {
        tmp.release();
    }
}
 

protected final void setMajor( Vector3f v, float f ) {
    v.set(mainAxis.index(), f);
}
 

public FloatBuffer[] writeTangentArray(FloatBuffer normalBuffer, FloatBuffer tangentStore, FloatBuffer binormalStore, FloatBuffer textureBuffer, Vector3f scale) {
        if (!isLoaded()) {
            throw new NullPointerException();
        }

        if (tangentStore != null) {
            if (tangentStore.remaining() < getWidth() * getHeight() * 3) {
                throw new BufferUnderflowException();
            }
        } else {
            tangentStore = BufferUtils.createFloatBuffer(getWidth() * getHeight() * 3);
        }
        tangentStore.rewind();

        if (binormalStore != null) {
            if (binormalStore.remaining() < getWidth() * getHeight() * 3) {
                throw new BufferUnderflowException();
            }
        } else {
            binormalStore = BufferUtils.createFloatBuffer(getWidth() * getHeight() * 3);
        }
        binormalStore.rewind();

        Vector3f normal = new Vector3f();
        Vector3f tangent = new Vector3f();
        Vector3f binormal = new Vector3f();
        /*Vector3f v1 = new Vector3f();
        Vector3f v2 = new Vector3f();
        Vector3f v3 = new Vector3f();
        Vector2f t1 = new Vector2f();
        Vector2f t2 = new Vector2f();
        Vector2f t3 = new Vector2f();*/

        for (int r = 0; r < getHeight(); r++) {
            for (int c = 0; c < getWidth(); c++) {
                
                int idx = (r * getWidth() + c) * 3;
                normal.set(normalBuffer.get(idx), normalBuffer.get(idx+1), normalBuffer.get(idx+2));
                tangent.set(normal.cross(new Vector3f(0,0,1)));
                binormal.set(new Vector3f(1,0,0).cross(normal));
                
                BufferUtils.setInBuffer(tangent.normalizeLocal(), tangentStore, (r * getWidth() + c)); // save the tangent
                BufferUtils.setInBuffer(binormal.normalizeLocal(), binormalStore, (r * getWidth() + c)); // save the binormal
            }
        }

/*        for (int r = 0; r < getHeight(); r++) {
            for (int c = 0; c < getWidth(); c++) {

                int texIdx = ((getHeight() - 1 - r) * getWidth() + c) * 2; // pull from the end
                int texIdxAbove = ((getHeight() - 1 - (r - 1)) * getWidth() + c) * 2; // pull from the end
                int texIdxNext = ((getHeight() - 1 - (r + 1)) * getWidth() + c) * 2; // pull from the end

                v1.set(c, getValue(c, r), r);
                t1.set(textureBuffer.get(texIdx), textureBuffer.get(texIdx + 1));

                // below
                if (r == getHeight()-1) { // last row
                    v3.set(c, getValue(c, r), r + 1);
                    float u = textureBuffer.get(texIdx) - textureBuffer.get(texIdxAbove);
                    u += textureBuffer.get(texIdx);
                    float v = textureBuffer.get(texIdx + 1) - textureBuffer.get(texIdxAbove + 1);
                    v += textureBuffer.get(texIdx + 1);
                    t3.set(u, v);
                } else {
                    v3.set(c, getValue(c, r + 1), r + 1);
                    t3.set(textureBuffer.get(texIdxNext), textureBuffer.get(texIdxNext + 1));
                }
                
                //right
                if (c == getWidth()-1) { // last column
                    v2.set(c + 1, getValue(c, r), r);
                    float u = textureBuffer.get(texIdx) - textureBuffer.get(texIdx - 2);
                    u += textureBuffer.get(texIdx);
                    float v = textureBuffer.get(texIdx + 1) - textureBuffer.get(texIdx - 1);
                    v += textureBuffer.get(texIdx - 1);
                    t2.set(u, v);
                } else {
                    v2.set(c + 1, getValue(c + 1, r), r); // one to the right
                    t2.set(textureBuffer.get(texIdx + 2), textureBuffer.get(texIdx + 3));
                }

                calculateTangent(new Vector3f[]{v1.mult(scale), v2.mult(scale), v3.mult(scale)}, new Vector2f[]{t1, t2, t3}, tangent, binormal);
                BufferUtils.setInBuffer(tangent, tangentStore, (r * getWidth() + c)); // save the tangent
                BufferUtils.setInBuffer(binormal, binormalStore, (r * getWidth() + c)); // save the binormal
            }
        }
        */
        return new FloatBuffer[]{tangentStore, binormalStore};
    }
 

public static TriangleData processTriangle(int[] index, Vector3f[] v, Vector2f[] t) {
		Vector3f edge1 = new Vector3f();
		Vector3f edge2 = new Vector3f();
		Vector2f edge1uv = new Vector2f();
		Vector2f edge2uv = new Vector2f();

		Vector3f tangent = new Vector3f();
		Vector3f binormal = new Vector3f();
		Vector3f normal = new Vector3f();

		t[1].subtract(t[0], edge1uv);
		t[2].subtract(t[0], edge2uv);
		float det = edge1uv.x * edge2uv.y - edge1uv.y * edge2uv.x;

		boolean normalize = false;
		if (Math.abs(det) < ZERO_TOLERANCE) {
//			log.log(Level.WARNING, "Colinear uv coordinates for triangle " + "[{0}, {1}, {2}]; tex0 = [{3}, {4}], " + "tex1 = [{5}, {6}], tex2 = [{7}, {8}]",
//					new Object[] { index[0], index[1], index[2], t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y });
			det = 1;
			normalize = true;
		}

		v[1].subtract(v[0], edge1);
		v[2].subtract(v[0], edge2);

		tangent.set(edge1);
		tangent.normalizeLocal();
		binormal.set(edge2);
		binormal.normalizeLocal();

		if (Math.abs(Math.abs(tangent.dot(binormal)) - 1) < ZERO_TOLERANCE) {
//			log.log(Level.WARNING, "Vertices are on the same line " + "for triangle [{0}, {1}, {2}].", new Object[] { index[0], index[1], index[2] });
		}

		float factor = 1 / det;
		tangent.x = (edge2uv.y * edge1.x - edge1uv.y * edge2.x) * factor;
		tangent.y = (edge2uv.y * edge1.y - edge1uv.y * edge2.y) * factor;
		tangent.z = (edge2uv.y * edge1.z - edge1uv.y * edge2.z) * factor;
		if (normalize) {
			tangent.normalizeLocal();
		}

		binormal.x = (edge1uv.x * edge2.x - edge2uv.x * edge1.x) * factor;
		binormal.y = (edge1uv.x * edge2.y - edge2uv.x * edge1.y) * factor;
		binormal.z = (edge1uv.x * edge2.z - edge2uv.x * edge1.z) * factor;
		if (normalize) {
			binormal.normalizeLocal();
		}

		tangent.cross(binormal, normal);
		normal.normalizeLocal();

		return new TriangleData(tangent, binormal, normal);
	}
 

/**
     * Creates a normal array from the normal data in this Geomap
     *
     * @param store A preallocated FloatBuffer where to store the data (optional), size must be >= getWidth()*getHeight()*3
     * @return store, or a new FloatBuffer if store is null
     *
     * @throws NullPointerException If isLoaded() or hasNormalmap() is false
     */
    public FloatBuffer writeNormalArray(FloatBuffer store, Vector3f scale) {
        
        if (store!=null){
            if (store.remaining() < getWidth()*getHeight()*3)
                throw new BufferUnderflowException();
        }else{
            store = BufferUtils.createFloatBuffer(getWidth()*getHeight()*3);
        }
        store.rewind();

        Vector3f oppositePoint = new Vector3f();
        Vector3f adjacentPoint = new Vector3f();
        Vector3f rootPoint = new Vector3f();
        Vector3f tempNorm = new Vector3f();
        int normalIndex = 0;

        for (int y = 0; y < getHeight(); y++) {
            for (int x = 0; x < getWidth(); x++) {
                rootPoint.set(x, getValue(x,y), y);
                if (y == getHeight() - 1) {
                    if (x == getWidth() - 1) {  // case #4 : last row, last col
                        // left cross up
//                            adj = normalIndex - getWidth();
//                            opp = normalIndex - 1;
                        adjacentPoint.set(x, getValue(x,y-1), y-1);
                        oppositePoint.set(x-1, getValue(x-1, y), y);
                    } else {                    // case #3 : last row, except for last col
                        // right cross up
//                            adj = normalIndex + 1;
//                            opp = normalIndex - getWidth();
                        adjacentPoint.set(x+1, getValue(x+1,y), y);
                        oppositePoint.set(x, getValue(x,y-1), y-1);
                    }
                } else {
                    if (x == getWidth() - 1) {  // case #2 : last column except for last row
                        // left cross down
                        adjacentPoint.set(x-1, getValue(x-1,y), y);
                        oppositePoint.set(x, getValue(x,y+1), y+1);
//                            adj = normalIndex - 1;
//                            opp = normalIndex + getWidth();
                    } else {                    // case #1 : most cases
                        // right cross down
                        adjacentPoint.set(x, getValue(x,y+1), y+1);
                        oppositePoint.set(x+1, getValue(x+1,y), y);
//                            adj = normalIndex + getWidth();
//                            opp = normalIndex + 1;
                    }
                }



                tempNorm.set(adjacentPoint).subtractLocal(rootPoint)
                        .crossLocal(oppositePoint.subtractLocal(rootPoint));
                tempNorm.multLocal(scale).normalizeLocal();
//                    store.put(tempNorm.x).put(tempNorm.y).put(tempNorm.z);
                BufferUtils.setInBuffer(tempNorm, store,
                        normalIndex);
                normalIndex++;
            }
        }

        return store;
    }
 

public static void methodThatUsesAllocation(){
    Vector3f vector = new Vector3f();
    vector.set(0.1f, 0.2f, 0.3f);
    sumCompute.addLocal(vector);
}
 

@Override
public void getRandomPoint(Vector3f store) {
    store.set(point);
}
 

/**
 * This method fills the point with data.
 * It does not fill the normal.
 * @param store the variable to store the point data
 * @param normal not used in this class
 */
@Override
public void getRandomPointAndNormal(Vector3f store, Vector3f normal) {
    store.set(point);
}
 

/**
 * Copy this wheel's physics-space location to the specified vector.
 *
 * @param store storage for the result (not null, modified)
 */
public void getWheelWorldLocation(final Vector3f store) {
    store.set(this.wheelWorldLocation);
}
 

/**
 * Copy the gravitational acceleration acting on newly-added bodies.
 *
 * @param gravity storage for the result (not null, modified)
 * @return acceleration (in the vector provided)
 */
public Vector3f getGravity(Vector3f gravity) {
    return gravity.set(this.gravity);
}
 

/**
 * Adds a key frame for the given scale at the given keyFrame index
 * @param keyFrameIndex the index at which the keyFrame must be inserted
 * @param scale the scale to use for this keyFrame
 */
public void addKeyFrameScale(int keyFrameIndex, Vector3f scale) {
    Vector3f s = getScaleForFrame(keyFrameIndex);
    s.set(scale);
}
 

/**
 * Adds a key frame for the given scale at the given keyFrame index
 * @param keyFrameIndex the index at which the keyFrame must be inserted
 * @param scale the scale to use for this keyFrame
 */
public void addKeyFrameScale(int keyFrameIndex, Vector3f scale) {
    Vector3f s = getScaleForFrame(keyFrameIndex);
    s.set(scale);
}
 

/**
 * This method fills the point with data.
 * It does not fill the normal.
 * @param store the variable to store the point data
 * @param normal not used in this class
 */
@Override
public void getRandomPointAndNormal(Vector3f store, Vector3f normal) {
    store.set(point);
}