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The Image Manipulator is a viewer that can be used to transform an image based on the value of a signal. It allows you to either move, rotate, scale and/or transparentize an image using so called manipulations. By combining images, signals and manipulations a user is able to create new viewers to be used in a layout.
A move manipulation can be used to change an images X and Y position using pixels.
A static image of a cylinder overlayed by an Image Manipulator with a move manipulation manipulating an image of a piston in the Y direction.
A rotate manipulation can be used to change the angle of an image using degrees.
A static image of a compass overlayed by an Image Manipulator with a rotate manipulation manipulating an image of a pointer.
A scale manipulation can be used to change the width and height of an image using pixels.
A scale manipulation manipulating the width and height of a square.
A transparentize manipulation can be used to change the opacity of an image using percentages.
A static image of an LED that is off overlayed by an Image Manipulator with a transparentize manipulation manipulating the opacity of an image of LED that is on.
To add a new Image Manipulator to your layout either right click the layout or drag a signal from the sidepanel and the following menu will pop up.
After adding the Image Manipulator to your layout it will appear empty. First a signal needs to be added which can be done by clicking the 'Add Signal' button seen in the image below or by dragging a signal from the sidepanel to the Image Manipulator.
Note: If the Image Manipulator was added to the layout by dragging a signal from the sidepanel, the 'Add Signal' button will not appear. To add more signals you can either drag them from the sidepanel or right click the Image Manipulator and add a signal through the context menu.
In addition to a signal, the Image Manipulator also needs an image to manipulate. An image can be added by clicking the 'Add Image' button as seen in the image below.
The order of your manipulions matter. Have a look at the following examples.
If a square is first rotated and then scaled, the end result will be a diamond.
If a square is first scaled and then rotated, the end result will be a rotated rectangle.