C#/VB.NET 自定义动画路径

PPT中的动画效果可分为已有内置动画以及自定义动画。设置内置动画，只需直接指定动画效果类型即可。本文主要介绍如何实现自定义动画，即自定义形状动作线性路径。附C#及VB.NET代码供参考。

程序运行环境如下：

• .Net Framework 4.8
• Visual Studio
• Spire.Presentation.dll 6.4.5

所需引用的必要程序集文件如下图：

C#

using Spire.Presentation;
using Spire.Presentation.Collections;
using Spire.Presentation.Drawing.Animation;
using System.Drawing;

namespace CustomAnimation
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个幻灯片文档(新建的文档已默认包含一页幻灯片）
            Presentation ppt = new Presentation();
            ISlide slide = ppt.Slides[0];//获取第一页空白幻灯片

            //添加形状（指定形状坐标、大小及相关格式设置）
            IAutoShape shape = slide.Shapes.AppendShape(ShapeType.FivePointedStar, new RectangleF(100, 50, 180, 180));
            shape.Fill.FillType = Spire.Presentation.Drawing.FillFormatType.Gradient;
            shape.Fill.Gradient.GradientStops.Append(0, KnownColors.SkyBlue);
            shape.Fill.Gradient.GradientStops.Append(1, KnownColors.Pink);
            shape.ShapeStyle.LineColor.Color = Color.White;

            //给形状设置动画效果
            AnimationEffect effect = ppt.Slides[0].Timeline.MainSequence.AddEffect(shape, AnimationEffectType.PathUser);
            CommonBehaviorCollection common = effect.CommonBehaviorCollection;
            AnimationMotion motion = (AnimationMotion)common[0];
            motion.Origin = AnimationMotionOrigin.Layout;
            motion.PathEditMode = AnimationMotionPathEditMode.Relative;
            MotionPath moinPath = new MotionPath();
            moinPath.Add(MotionCommandPathType.MoveTo, new PointF[] { new PointF(0, 0) }, MotionPathPointsType.CurveAuto, true);
            moinPath.Add(MotionCommandPathType.LineTo, new PointF[] { new PointF(0.18f, 0.18f) }, MotionPathPointsType.CurveAuto, true);
            moinPath.Add(MotionCommandPathType.LineTo, new PointF[] { new PointF(-0.1f, 0.2f) }, MotionPathPointsType.CurveAuto, true);
            moinPath.Add(MotionCommandPathType.LineTo, new PointF[] { new PointF(0.25f, 0.2f) }, MotionPathPointsType.CurveAuto, true);
            moinPath.Add(MotionCommandPathType.End, new PointF[] { }, MotionPathPointsType.CurveStraight, true);
            motion.Path = moinPath;

            //保存文档
            ppt.SaveToFile("CustomAnimation.pptx", FileFormat.Pptx2013);
            System.Diagnostics.Process.Start("CustomAnimation.pptx");
        }
    }
}

VB.NET

Imports Spire.Presentation
Imports Spire.Presentation.Collections
Imports Spire.Presentation.Drawing.Animation
Imports System.Drawing

Namespace CustomAnimation
    Class Program
        Private Shared Sub Main(args As String())
            '创建一个幻灯片文档(新建的文档已默认包含一页幻灯片）
            Dim ppt As New Presentation()
            Dim slide As ISlide = ppt.Slides(0)
            '获取第一页空白幻灯片
            '添加形状（指定形状坐标、大小及相关格式设置）
            Dim shape As IAutoShape = slide.Shapes.AppendShape(ShapeType.FivePointedStar, New RectangleF(100, 50, 180, 180))
            shape.Fill.FillType = Spire.Presentation.Drawing.FillFormatType.Gradient
            shape.Fill.Gradient.GradientStops.Append(0, KnownColors.SkyBlue)
            shape.Fill.Gradient.GradientStops.Append(1, KnownColors.Pink)
            shape.ShapeStyle.LineColor.Color = Color.White

            '给形状设置动画效果
            Dim effect As AnimationEffect = ppt.Slides(0).Timeline.MainSequence.AddEffect(shape, AnimationEffectType.PathUser)
            Dim common As CommonBehaviorCollection = effect.CommonBehaviorCollection
            Dim motion As AnimationMotion = DirectCast(common(0), AnimationMotion)
            motion.Origin = AnimationMotionOrigin.Layout
            motion.PathEditMode = AnimationMotionPathEditMode.Relative
            Dim moinPath As New MotionPath()
            moinPath.Add(MotionCommandPathType.MoveTo, New PointF() {New PointF(0, 0)}, MotionPathPointsType.CurveAuto, True)
            moinPath.Add(MotionCommandPathType.LineTo, New PointF() {New PointF(0.18F, 0.18F)}, MotionPathPointsType.CurveAuto, True)
            moinPath.Add(MotionCommandPathType.LineTo, New PointF() {New PointF(-0.1F, 0.2F)}, MotionPathPointsType.CurveAuto, True)
            moinPath.Add(MotionCommandPathType.LineTo, New PointF() {New PointF(0.25F, 0.2F)}, MotionPathPointsType.CurveAuto, True)
            moinPath.Add(MotionCommandPathType.[End], New PointF() {}, MotionPathPointsType.CurveStraight, True)
            motion.Path = moinPath

            '保存文档
            ppt.SaveToFile("CustomAnimation.pptx", FileFormat.Pptx2013)
            System.Diagnostics.Process.Start("CustomAnimation.pptx")
        End Sub
    End Class
End Namespace

动画效果：

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