Line
A brief reference to the Line class.
Line contains some methods also found in Renderable, but is not a Renderable, as it does not possess a width and height.
Initialization
You can initialize a Line in a few different ways:
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line = Line(screen, x1, y1, x2, y2) # Pass two points
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line = Line(screen, (x1, y1), (x2, y2)) # Two points as tuples
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line = Line(screen, location1, location2) # Two points as Locations
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Movement
You can move the Line using slightly modified methods from Object:
We can translate by a specified amount with:
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line.move(dx, dy) # Move both points by dx, dy
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line.move(dx, dy, point=1) # Move only the first point by dx, dy
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We can move both positions to new locations with:
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line.moveto(x1, y1, x2, y2)
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line.moveto((x1, y1), (x2, y2))
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line.moveto(location1, location2)
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We can change only one of the positions with either:
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line.pos1(location)
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1
line.pos2(location)
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Most methods in Line are able to take numbers, tuples, or Locations because Lines deal with more coordinates than Renderables.
Location
Retrieve both positions in a tuple using the familiar:
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line.location() # Returns both endpoints positions as a tuple (pos1, pos2)
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Rotation
You can rotate lines just as you would expect:
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line.rotation() # Get the current rotation
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line.rotation(rotation) # Set a new angle
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line.rotate(angle_change) # Change angle by angle_change
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Or we can pass a location in for the line to look at:
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line.lookat(location) # Look at the passed location (moves second endpoint)
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line.lookat(location, point=1) # Move the first point instead
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Color
You can change the Color of a Line just like a Renderable:
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line.color() # Retrieve the current Color
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line.color(color) # Set a new Color
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Thickness
You can modify the thickness of the line in pixels with:
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line.thickness(thickness)
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Dashes
You may decide to change the line to a dotted line with:
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line.dashes(3) # Add dashes 3px in length with 3px between them
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line.dashes((3, 2)) # Specify dash length and distance separately.
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Length
You can get the length of the line by calling:
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line.length()
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Visibility
Visibility is accessed exactly as it is in Renderable:
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line.visible(False)
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Transform and Cloning
Transforms and cloning work as in Renderable:
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line.transform() # (pos1, pos2, angle)
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Line's transform is a tuple with both positions and current angle.
Cloning works as expected:
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line2 = line.clone() # new line that's the same!
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Intersects (Overlaps)
The Line's version of Renderable's
overlaps() is intersects(). It can take any Renderable or Line and will check if the line intersects with any of their lines.1
line.intersects(line2)
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line.intersects(rectangle)
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Last modified 8mo ago