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Paddle Ball!

Paddle Ball!. We are going to make a “paddle ball” game. Before we do, we need to learn a few concepts. One of the biggest new concepts we will learn is called Object Orientation

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Paddle Ball!

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  1. Paddle Ball!

  2. We are going to make a “paddle ball” game • Before we do, we need to learn a few concepts. One of the biggest new concepts we will learn is called Object Orientation • I have typed in the notes section of these slides, so for more information, please read the notes. Either View tab Notes page or…select the notes button at the bottom of the slide (if not in a slideshow)

  3. Drawing Shapes Making shapes using tkinter

  4. Using tkinter • Tkinter is a graphics module (like time, turtle, random…) • It is designed to work faster and better than the turtle module, which is designed to teach and practice using graphics (it’s basic). • Just like the time, random, and turtle modules, we have to import it before using.

  5. We need a canvas! Import tkinter: from tkinter import * tk = Tk( ) canvas = Canvas(tk, width=500, height = 500) canvas.pack( )

  6. Let’s make a box • We are going to begin by making a box ( a rectangle) • Now that we have a canvas, we will use a create_polygon functionwhich will draw a shape using parameters. • If a triangle uses 6 parameters:canvas.create_polygon(10, 10, 10, 60, 50, 35) • How many parameters do you think a rectanglewill use?

  7. Get rect[angle] newb  • That was for Cole & Dustin • Begin by creating a canvas to draw our rectangle on: fromtkinterimport* tk = Tk( ) canvas = Canvas(tk, width = 500, height = 500) canvas.pack( ) canvas.create_rectangle(10, 10, 50, 300) Coordinates for top left and bottom right corners

  8. Plain rectangles are boring • Let’s add some color by filling them in. Same code as before, but with one modification: canvas.create_rectangle(10, 10, 50, 300. fill = ‘green’) Now what has happened? Yes! A green rectangle.

  9. Pick a color, any color We can use the color selector (just like in Word) to select a color to fill our rectangle with. This is called the colorchooser Add to your code: (before the create rectangle) colorchooser.askcolor( )

  10. Use the color chooser in fill c = colorchooser.askcolor( ) canvas.create_rectangle(10, 10, 50, 300, fill=c[1]) * When the color is selected, a tuple is created with the red, green, and blue value amounts as well as the hexadecimal value for all three. The [1] index selects the hexadecimal value.

  11. More color options! • We can change the color of our object by configuring it. canvas.itemconfig(object, fill = ‘color’) • Our object is 1, because it is the object ID • We could give our shape a variable name and use that as well.

  12. What we can also change: fill = ‘color’ outline = ‘color’ * The outline and fill color do not have to be the same colors

  13. Arcs • Arc – a segment of the circumference of a circle • tkinter actually draws an arc inside of a rectangle. • When we create an arc, we use coordinates just like a rectangle. • We also use style and extent arguments

  14. Noah’s Arc Joakim Noah – Chicago Bulls

  15. 1st set of coordinates (10, 10) 2nd set of coordinates (200, 100) Extent – the degrees of the angle of the arc Style – its an arc

  16. Creating an arc Canvas.create_arc(10, 10, 200, 100, extent = 180, style = ARC

  17. Arc angle measurements tkinter considers 360o as the same as 0o, For a full circle, we’ll use 359o

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