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Accept all cookies Customize settings. Before we proceed, there are a few other libraries that you need to import whenever you intend to use this library in your program. Below is the code for those imports:. Now that we are done with the necessary imports, let's first create a window in which our graphics will be shown. The code for that is given below, along with its explanation in the comments:. Copy the imports above, as well as this code in a single python. You should see a white square dimension screen pop up.
Now, if we wish to draw any shapes or make any other kind of graphics, we need to do that in our "showScreen" function. Let's now try to make a square using OpenGL, but before we do we need to understand the coordinate system that OpenGL follows.
The 0,0 point is the bottom left of your window, if you go up from there, you're moving along the y-axis, and if you go right from there, you're moving along the x-axis. So, the top left point of your window would be 0, , top right would be , , bottom right would be , 0. Note : We're talking about the window we created above, which had a dimension of x in our example, and not your computer's full screen. Now that we've got that out of the way, lets code a square. The explanation to the code can be found in the comments.
Let us now write a program to check whether the OpenGL components are working fine or not. PyOpenGL acts as a binding library for the Python program. It interacts with the Graphical Processing Unit GPU to render vecto r images that provide us with a clear image or figure.
The very first thing, we need to do is to create a window with the following properties. First, you will have to import three different libraries using the import keyword. Another critical thing you will notice that we have imported NumPy library. The way every painter requires a canvas to draw any sketch, your Python program also requires to create a window in which you will portray a 2D or 3D graphics. You will have to use the glfw.
Next comes the glfw. It helps in creating a window. It will take multiple arguments width, height, and the name of the window as input and return the output accordingly. This method will accept 3 arguments.
These are x-axis, y-axis, and window name. The function glfw. The vertices value will have the three points as a list representing the x left vertex , y right vertex , and z top vertex location on a plane. Next, you have to use the glEnableClientState function to enable client-side competences.
Then, the function glClearColor 0,0,0,0 will help in setting the background color taking in R red , G green , B blue , A alpha as the 4 different argument. Finally, you will have to create a loop that will execute until the window creation gets terminated. Here, we have done this using the while. Inside the loop, we will use the glfw.
The next function glClear will be responsible for cleaning the screen every time the loop executes. This will assure that there is nothing on the screen prior to the rendering of graphics by this Python program. Lastly, the glDrawArrays function will put the vectorized graphics in consecutive pixels.
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