Kinect虚拟试衣间开发(4)-2D衣物试穿

衣物试穿是虚拟试衣间关键部分，可以分为两部分实现，一个是把现实中的人体坐标转换为屏幕坐标，二是根据骨骼宽和高调整衣物大小，并把前面获取的人体屏幕坐标赋给衣物位置坐标

• 显示衣物的image控件

 <Image x:Name="clth" Source="FDress/d8.png" HorizontalAlignment="Left"  Visibility="Hidden" Width="Auto" Height="Auto" Margin="396,279,0,0" VerticalAlignment="Top" Grid.Column="1" Grid.RowSpan="2" />

• 转换到屏幕坐标

        /// <summary>        /// 转换骨骼坐标到彩色坐标，再到屏幕坐标        /// </summary>        /// <param name="joint">关节点</param>        /// <returns>返回屏幕点</returns>        public Point getJointScreenPoint(Joint joint)        {            //将body point转换为 color point            ColorSpacePoint colorPoint = this.kinectSensor.CoordinateMapper.MapCameraPointToColorSpace(joint.Position);            //将color point 变为 屏幕坐标点，数字是包含彩图image的Grid的长宽            double X =(colorPoint.X / colorFrameDescription.Width) * 1357;            double Y =( colorPoint.Y / colorFrameDescription.Height) * 735;            Point point = new Point(X, Y);            return point;        }

• 调整图片大小

        /// <summary>        /// 调整图片大小        /// </summary>        /// <param name="body">身体</param>        /// <returns></returns>        public void changeSize(Body body)        {            double shoulderwidth = Math.Abs(getJointScreenPoint(body.Joints[JointType.ShoulderLeft]).X - getJointScreenPoint(body.Joints[JointType.ShoulderRight]).X);            double width = 3 * shoulderwidth ;            double height = 3 * shoulderwidth ;            //贴图左肩与图的padding            double x = getJointScreenPoint(body.Joints[JointType.ShoulderLeft]).X * shoulderwidth / 200;            double y = getJointScreenPoint(body.Joints[JointType.ShoulderLeft]).Y * shoulderwidth / 200;            double x1 = getJointScreenPoint(body.Joints[JointType.ShoulderLeft]).X-0.3*width;            double y1 = getJointScreenPoint(body.Joints[JointType.ShoulderLeft]).Y-0.17*height;            try            {                clth.Width = width;                clth.Height = height;                clth.Margin = new Thickness(x1, y1, 0, 0);            }catch(ArgumentException e)            {            }        }

• 调用changeSize函数
  在Reader_multiSourceFrameArrived中

 using (BodyFrame bodyFrame = multiSourceFrame.BodyFrameReference.AcquireFrame())            {                if (bodyFrame != null)                {                    if (this.bodies == null) bodies = new Body[bodyFrame.BodyCount];                    //return bodies to a list                    bodyFrame.GetAndRefreshBodyData(this.bodies);                    Body thebody = bodies[0];                    foreach (Body body in this.bodies)                    {                    //多个人在屏幕前时，选择最近的那一个                        if (body.IsTracked)                        {                            if (thebody.Joints[JointType.SpineBase].Position.Z == 0)    thebody = body;                            else if (thebody.Joints[JointType.SpineBase].Position.Z > body.Joints[JointType.SpineBase].Position.Z) thebody = body;                            changeSize(thebody);                        }                    }                }            }        }