Animates the camera position and directions. - CSharp System.Windows.Media.Media3D

CSharp examples for System.Windows.Media.Media3D:PerspectiveCamera

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Description

Animates the camera position and directions.

Demo Code


using System.Windows.Media.Media3D;
using System.Windows.Media.Animation;
using System.Windows.Controls;
using System.Windows;
using System.Text;
using System.Globalization;
using System;/*from   w w w . j a  va  2  s .com*/

public class Main{
        /// <summary>
        /// Animates the camera position and directions.
        /// </summary>
        /// <param name="camera">
        /// The camera to animate.
        /// </param>
        /// <param name="newPosition">
        /// The position to animate to.
        /// </param>
        /// <param name="newDirection">
        /// The direction to animate to.
        /// </param>
        /// <param name="newUpDirection">
        /// The up direction to animate to.
        /// </param>
        /// <param name="animationTime">
        /// Animation time in milliseconds.
        /// </param>
        public static void AnimateTo(this ProjectionCamera camera, Point3D newPosition, Vector3D newDirection, Vector3D newUpDirection, double animationTime)
        {
            var fromPosition = camera.Position;
            var fromDirection = camera.LookDirection;
            var fromUpDirection = camera.UpDirection;

            camera.Position = newPosition;
            camera.LookDirection = newDirection;
            camera.UpDirection = newUpDirection;

            if (animationTime > 0)
            {
                var a1 = new Point3DAnimation(
                    fromPosition, newPosition, new Duration(TimeSpan.FromMilliseconds(animationTime)))
                {
                    AccelerationRatio = 0.3,
                    DecelerationRatio = 0.5,
                    FillBehavior = FillBehavior.Stop
                };
                a1.Completed += (s, a) => camera.BeginAnimation(ProjectionCamera.PositionProperty, null);
                camera.BeginAnimation(ProjectionCamera.PositionProperty, a1);

                var a2 = new Vector3DAnimation(
                    fromDirection, newDirection, new Duration(TimeSpan.FromMilliseconds(animationTime)))
                {
                    AccelerationRatio = 0.3,
                    DecelerationRatio = 0.5,
                    FillBehavior = FillBehavior.Stop
                };
                a2.Completed += (s, a) => camera.BeginAnimation(ProjectionCamera.LookDirectionProperty, null);
                camera.BeginAnimation(ProjectionCamera.LookDirectionProperty, a2);

                var a3 = new Vector3DAnimation(
                    fromUpDirection, newUpDirection, new Duration(TimeSpan.FromMilliseconds(animationTime)))
                {
                    AccelerationRatio = 0.3,
                    DecelerationRatio = 0.5,
                    FillBehavior = FillBehavior.Stop
                };
                a3.Completed += (s, a) => camera.BeginAnimation(ProjectionCamera.UpDirectionProperty, null);
                camera.BeginAnimation(ProjectionCamera.UpDirectionProperty, a3);
            }
        }
}

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