![]() The result is that the sketch starts out with a grey background then turns orange when the mouse button is pressed. def setup():Ĭreate a new function, which is based on the mousePressed() event, where the background will change only after the mouse button is pressed. This change means that every time the mouse moves, the background is refreshed. Mouse Data The Processing variables mouseX and mouseY (note the capital X and Y) store the x-coordinate and y-coordinate of the cursor relative to the origin in the upper-left corner of the display window. This is done by moving the background from the setup function to the draw function. Take this line: PVector leftPupil py().add(py().sub(leftEye). def setup():Īnimate a single line, where the top of the line is fixed but the bottom of the line moves with the mouse. We are doing a lot with just a couple lines of code, so let’s break that down into smaller steps. The two systems communicate with each other using a serial port. This allows the arduino to control these. As such Processing has access to all the computers resources, like graphics display, file handling, sound players and so on. ![]() ![]() Use setup() and draw() functions to animate the line. Processing is a language run on the host computer that you can use to communicate with an arduino. In this example, we also set the size of the output window using size(), the color of the background using background(), and the color of the line using stroke(). The Garrys Mod Lua Source Code is available on GitHub. All non-code (such as writing, drawings, images. You can help test changes for the next update on the Dev beta branch through Steam. For example: line(15, 25, 70, 90)Ĭreate a static sketch that contains a line. mouseX represents the x-coordinate of the mouse mouseY represents the y-coordinate of the mouse 1. Building on the first post about using Processing.py (shown in the table below), this post will demonstrate the basic structure of a Processing.py program, how to draw lines, and understand some other basics of the Processing.py programming language.įor the previous entry in the Processing.py series, see this page:ĭrawing a line is as simple as providing two x, y points, one for each end of the line.
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