Dynamic Transforms

Applying transforms to elements in XAML is fairly straight forward, for example the following will rotate some text:

Obviously this is fine for static rotation values, and animations using a Storyboard, however what if you want to specify the rotation in C#?  Or perhaps a Scale Transform in C#?

Dynamic Transforms

This simple example allows you to specify Rotation and Scale values and the image is rotated to reflect the current settings.

<UserControl x:Class="DynamicTransforms.MainPage"
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
    <Grid x:Name="LayoutRoot">
            <ColumnDefinition />
            <ColumnDefinition Width="Auto" />
        <Image x:Name="image" Grid.Column="0" Source="assets/sign.jpg" Stretch="None" />
        <StackPanel Grid.Column="1" Orientation="Vertical">
            <TextBlock Text="Scale X" />
            <TextBox x:Name="scaleX" Width="50" Text="1.0" TextChanged="TextBox_TextChanged" />
            <TextBlock Text="Scale Y" />
            <TextBox x:Name="scaleY" Width="50" Text="1.0" TextChanged="TextBox_TextChanged" />
            <TextBlock Text="Rotation Angle" />
            <TextBox x:Name="rotate" Width="50" Text="0.0" TextChanged="TextBox_TextChanged" />

Here we have 3 textboxes that allow you to specify the Rotation angle and the Scale X/Y values.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Threading;

namespace DynamicTransforms
    public partial class MainPage : UserControl
        TransformGroup _tg = new TransformGroup();
        ScaleTransform _st = new ScaleTransform();
        RotateTransform _rt = new RotateTransform();
        private DispatcherTimer _timer = new DispatcherTimer();

        public MainPage()


        private void Setup()
            _st.ScaleX = 1;
            _st.ScaleY = 1;


            image.RenderTransform = _tg;

        private void ValueChanged()
            _st.ScaleX = double.Parse(scaleX.Text);
            _st.ScaleY = double.Parse(scaleY.Text);
            _rt.Angle = double.Parse(rotate.Text);
            _rt.CenterX = image.ActualWidth * 0.5;
            _rt.CenterY = image.ActualHeight * 0.5;

        private void TextBox_TextChanged(object sender, TextChangedEventArgs e)

obviously you will need to the alter the image source in the XAML above.

Post your Comments

Post your Comments

Latest Games
Zombie Escape
Apr 19, 2016
Plays: 2,499

Zombie Escape ScreenshotDrive fast before the crazy mutant zombies get you!

6 Ratings/4.1 Average
Car Parking
Jan 16, 2016
Plays: 2,365

Car Parking ScreenshotGuide the car to its parking space in this fun Car Parking game.

1 Rating/5 Average
Trash It
Jan 11, 2016
Plays: 2,271

Trash It ScreenshotAim for the Trash Can and get the various items of Trash in the bin.

4 Ratings/5 Average
Sky Fly
Jan 11, 2016
Plays: 2,416

Sky Fly ScreenshotFly your plane in this colorful vertical scrolling shoot-em-up. Blast the bad guys and collect any bonus's they leave behind.

1 Rating/5 Average
Professor Snappy
Jan 11, 2016
Plays: 1,958

Professor Snappy ScreenshotPop as many bubbles as possible in this fun and colorful bubble popping game. The levels start off easy enough but gradually get harder!

1 Rating/5 Average
Monster Match Saga
Jan 10, 2016
Plays: 2,283

Monster Match Saga ScreenshotHere we have a bunch of monsters that need to be matched up. Look out for the bomb and spinning monsters that will cause special damage!

3 Ratings/4.6 Average
Fly Bird Fly
Jan 10, 2016
Plays: 2,104

Fly Bird Fly ScreenshotGuide your friendly Bird through the maze of pipes and other obstacles collecting the Stars in this cool arcade game inspired by the legendary Flappy Bird.

1 Rating/5 Average
Life In One
Jan 10, 2016
Plays: 2,280

Life In One ScreenshotYou are stranded on an Alien planet. Your goal is to build a space rocket and escape. Start by building units to create power and mine the metal patches. Build defenses to defend your base from the advancing Aliens and Zombies!

2 Ratings/3 Average
X Pool
Jan 02, 2016
Plays: 2,902

X Pool ScreenshotPlay Pool against the computer or battle against your friends in the online mode!

3 Ratings/3 Average
Fruit Slicer
Jan 02, 2016
Plays: 1,999

Fruit Slicer ScreenshotSlice the fruit that is thrown up onto the screen. Slice the fruit into multiple pieces for maximum points!

1 Rating/5 Average