路径缩放动画上的低帧速率wpf（巨大的路径数据）

问题描述 投票：1回答：1

谁能告诉我如何用WPF中的大量数据为Path对象设置动画？

这是一个非常简单的代码：

<Window x:Class="WpfApp3.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApp3"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800" MouseWheel="MainWindow_OnMouseWheel">
<Grid>
    <Path   StrokeThickness="1" Stroke="#FF000000" StrokeLineJoin="Miter" StrokeStartLineCap="Flat" 
                     StrokeEndLineCap="Flat">
        <Path.RenderTransform>
            <ScaleTransform x:Name="ScaleTransform"></ScaleTransform>
        </Path.RenderTransform>
        <Path.Data>
            <PathGeometry Figures="%%Data%%" FillRule="NonZero"/>
        </Path.Data>
    </Path>
</Grid>


using System;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;

namespace WpfApp3
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window 
    {
    private double _scale = 1;
    public MainWindow()
    {
        InitializeComponent();
    }

    private void MainWindow_OnMouseWheel(object sender, MouseWheelEventArgs e)
    {
        if (e.Delta > 0)
            _scale *= 2;
        else
            _scale /= 2;

        DoubleAnimation a = new DoubleAnimation(_scale, TimeSpan.FromMilliseconds(2000));
        ScaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, a);
        ScaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, a);
    }

    }
}

注意，当您监视分辨率时，帧速率会降低。

PathData：

M 9.9390855 -9.3573639 H 499.29287 v 6.431173 H 9.3544333 V 7.0128956 H 496.95427 V 17.536631 H 8.1851293 v 9.354434 H 496.36962 v 9.939086 H 8.1851293 L 11.158048 47.925233 H 492.27705 V 63.724147 H 9.3544333 L 13.731642 80.060112693 v 24.79061 H 493.44635 v 18.70887 H 9.3544333 v 13.44699 H 492.8617 v 19.29352 H 10.523738 v 19.87817 H 495.20033 v 22.80143 H 13.446998 v 15.20096 H 489.3538 l 7.64244 28.52201 H 14.03165 v 22.34271 H 491.6924 V -17.542493 H 471.4523 V 471。 402.24064 V 288.81521 h 32.74052 V -14.03458 h -64.31174 v 296.41861 l -27.49889 7.3683 V -15.203885 h -27.4584 V 282.96868 h -29.2326 V -17.542493 H 247.89248 V 281.21473 c 0 0 -24.69105 2.26028 -23.38608 0 -298.172571 H 196.4431 V 284.72263 c 0 0 -34.49447 5.84652 -34.49447 0 0 -5.84652 0 -298.172558 0 -298.172558 H 135.63928 V 278.87611 H 98.806202 V -14.619233 H 67.23499 V 273.61426 H 34。 494472 V -16.373189 H 7.6004771 V 287.06126 H 73.666164 V -17.542493 H 129.20811 V 285.89193 h 91.79038 V -13.449928 l 17.93326 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c# wpf animation frame-rate
1个回答
0
投票

StreamGeometry对象是PathGeometry的轻型替代方案，用于创建几何形状。需要描述复杂的几何图形时，请使用StreamGeometry。 StreamGeometry经过优化，可处理许多PathGeometry对象，与使用许多单个PathGeometry对象相比，性能更好。

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