31 lines
861 B
Python
31 lines
861 B
Python
import pygame
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import math
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class Knob:
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def __init__(self, screen, color, radius, position):
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self.screen = screen
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self.color = color
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self.radius = radius
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self.position = position
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self.value = 0
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def set_value(self, value):
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self.value = value
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def set_color(self, color):
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self.color = color
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def get_position(self):
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return self.position
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def get_pointer_position(self):
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angle = (self.value * 0.8 * 2 + 0.7) * math.pi
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x = self.radius * math.cos(angle) + self.position[0]
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y = self.radius * math.sin(angle) + self.position[1]
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return(x, y)
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def display(self):
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pygame.draw.circle(self.screen, self.color, self.position, self.radius)
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pygame.draw.line(self.screen, "black", self.position, self.get_pointer_position(), 4)
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