Difference between revisions of "Drawing shapes"
(→Rectangle) |
(→Rectangle) |
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</syntaxhighlight> | </syntaxhighlight> | ||
+ | ===Colour=== | ||
Before we can draw your rectangle to the screen we will need to define a colour to use: | Before we can draw your rectangle to the screen we will need to define a colour to use: | ||
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COLOR = (255, 230, 200) | COLOR = (255, 230, 200) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
+ | |||
+ | ===Draw the Rectangle=== | ||
We can now draw the rectangle to the screen: | We can now draw the rectangle to the screen: | ||
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pygame.draw.rect(SCREEN, COLOR, rect1, 1) | pygame.draw.rect(SCREEN, COLOR, rect1, 1) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
+ | |||
+ | ===Update the screen=== | ||
Now you have drawn something new to the screen we need to update it. We can just update a single object: | Now you have drawn something new to the screen we need to update it. We can just update a single object: |
Revision as of 20:39, 21 February 2018
Make sure you are starting with a working pygame project, this will require you to install pygame and copy the code from the page below to make a start:
Rectangle
You can declare some variables to use for your rectangle, they require the x coordinate, the y coordinate, the width and the height:
LEFT = 100
TOP = 100
LENGTH = 20
WIDTH = 20
RECTCOORD = [LEFT, TOP, LENGTH, WIDTH]
rect1 = pygame.Rect(RECTCOORD)
This is the same as writing:
rect1 = pygame.Rect([100,100,20,20])
Colour
Before we can draw your rectangle to the screen we will need to define a colour to use:
RED = 255
YELLOW = 230
BLUE = 200
COLOR = (RED, YELLOW, BLUE)
Again this is the same as writing just:
COLOR = (255, 230, 200)
Draw the Rectangle
We can now draw the rectangle to the screen:
pygame.draw.rect(SCREEN, COLOR, rect1, 0)
The 0 will cause the shape to be filled with colour, a value above 0 will draw the outline only and use the number for the line thickness. For example:
pygame.draw.rect(SCREEN, COLOR, rect1, 1)
Update the screen
Now you have drawn something new to the screen we need to update it. We can just update a single object:
pygame.display.update(rect1)
or we can update everything:
pygame.display.update()