How to Create Graphics in a JES Application
JES is a programming environment that lets you edit photos, videos, and sound. JES allows you to select an image and change the color of each pixel. This programmatic approach enables you to edit images in interesting ways.
JES also includes built-in functionality to add your own graphics onto images. This includes lines or shapes such as rectangles, ovals, and circles.
How to Create an Empty Canvas in JES
You canrender existing images using JES, including those that a user has stored on their computer, that they select to upload. If you want to draw your shapes on a blank image, you’re able to use the built-in makeEmptyPicture() function to create a new empty canvas instead.
How to Create and Add Rectangles
You can use JES to create shapes such as rectangles. In JES, x and y coordinates start from the top-left corner of the image, instead of the bottom-left corner.
Use the built-in addRect() function to draw a rectangle onto an empty picture.
How to Create and Add Circles and Ovals
You can use the built-in addOval() function to create both ovals and circles. If you are creating a circle, make sure the width and height of the oval are equal.
How to Create and Add Lines
Use the addLine() function to draw lines on your empty image in JES.
Drawing Your Own Shapes in JES
You should now be able to draw your own shapes in JES. You can start getting more creative with some of the other interesting image-processing techniques on offer.
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