init
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megamichi
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198
main.py
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198
main.py
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#!/usr/bin/python3
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import pygame
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from math import sin, cos, radians, exp , degrees, log
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pygame.init()
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## funktionen
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def get_debug_text():
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def text(text, line_counter):
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debug_text = default_font.render(str(text), True, (255,255,255))
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screen.blit(debug_text, (0, line_counter * default_font.get_height()))
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line_counter = 1
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globalvars = globals()
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for a in globalvars:
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text(f"{str(a)} = {str(globalvars[a])}", line_counter)
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line_counter += 1
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## klassen
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class Graph:
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def __init__(self) -> None:
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self.scale = 100
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# scale = abstand von einer ganzahl in px
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self.on_resize()
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self.dots = []
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self.pos = [0, 0]
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def on_resize(self):
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# self.pos = nulpunkt auf dem bildschirm
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self.pos = [screensize[0] // 2, screensize[1] // 2]
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def drawlines(self):
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for x in range(self.pos[0] % self.scale, screensize[0], self.scale):
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pygame.draw.line(screen, (200, 200, 200), (x, 0), (x, screensize[1]), 1)
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for y in range(self.pos[1] % self.scale, screensize[1], self.scale):
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pygame.draw.line(screen, (200, 200, 200), (0, y), (screensize[0], y), 1)
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def drawgrid(self):
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self.drawlines()
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self.beschrifte()
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# x linie
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pygame.draw.line(
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screen, (255, 255, 255), (0, self.pos[1]), (screensize[0], self.pos[1]), 2
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)
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# y linie
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pygame.draw.line(
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screen, (255, 255, 255), (self.pos[0], 0), (self.pos[0], screensize[1]), 2
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)
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def rule(self, x):
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if not x:
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return 0
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else:
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return log(x)
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def calculate(self):
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self.dots = []
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for x in range(0, screensize[0] * resolution):
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x -= self.pos[0]
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x /= resolution
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if not self.rule(x) < screensize[1]:
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pass
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else:
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self.dots.append((x, self.rule(x)))
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def draw(self):
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def get_point(p):
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return (self.pos[0] + self.dots[p][0] * self.scale,
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self.pos[1] - self.dots[p][1] * self.scale)
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if draw_mode:
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for p in range(len(self.dots) - 1):
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pygame.draw.line(
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screen,
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(255, 0, 0),
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get_point(p),
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get_point(p+1)
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, 6
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)
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else:
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for p in range(len(self.dots)):
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pygame.draw.circle(
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screen,
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(255,0,0),
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get_point(p),
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6
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)
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def beschrifte(self):
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# x beschriftung
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for num, x in enumerate(range(self.pos[0] % self.scale, screensize[0], self.scale)):
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pygame.draw.line(screen, (255, 255, 255), (x, self.pos[1] + 10), (x, self.pos[1] - 10), 5)
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num = self.pos[0] // self.scale - num
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num *= -1
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screen.blit(
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default_font.render(str(num), False, (255, 255, 255)),
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(x + 10, self.pos[1] + 10),
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)
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# y beschriftung
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for num, y in enumerate(range(self.pos[1] % self.scale, screensize[1], self.scale)):
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pygame.draw.line(screen, (255, 255, 255), (self.pos[0] + 10, y), (self.pos[0] - 10, y), 5)
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num = self.pos[1] // self.scale - num
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screen.blit(
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default_font.render(str(num), False, (255, 255, 255)),
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(self.pos[0] + 10, y + 10),
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)
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## variablen
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screen = pygame.display.set_mode((300, 300), pygame.RESIZABLE)
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screensize = pygame.display.get_window_size()
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clock = pygame.time.Clock()
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default_font = pygame.font.SysFont("sans", 14)
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resolution = 3
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draw_mode = 0
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# 0 = lines , 1 = dots
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old_graph_pos = []
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old_mouse_pos = []
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graph = Graph()
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show_debug = False
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running = True
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dragging = False
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if __name__ == "__main__":
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while running:
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## key managment
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pressed_keys = pygame.key.get_pressed()
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if pressed_keys[pygame.K_ESCAPE]:
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exit()
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if pressed_keys[pygame.K_d] and not preview_pressed_keys[pygame.K_d]:
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show_debug = not show_debug
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if pressed_keys[pygame.K_SPACE] and not preview_pressed_keys[pygame.K_SPACE]:
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draw_mode = not draw_mode
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if pressed_keys[pygame.K_PLUS] and not preview_pressed_keys[pygame.K_PLUS]:
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resolution += 1
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if pressed_keys[pygame.K_MINUS] and not preview_pressed_keys[pygame.K_MINUS]:
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resolution -= 1
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if pressed_keys[pygame.K_UP]:
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graph.pos[1] += 1
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if pressed_keys[pygame.K_DOWN]:
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graph.pos[1] -= 1
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if pressed_keys[pygame.K_LEFT]:
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graph.pos[0] += 1
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if pressed_keys[pygame.K_RIGHT]:
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graph.pos[0] -= 1
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preview_pressed_keys = pressed_keys
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## event managment
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for event in pygame.event.get():
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if event.type == pygame.QUIT:
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exit()
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if event.type == pygame.MOUSEWHEEL:
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if event.dict["y"] == -1 and not graph.scale == 20:
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graph.scale -= 1
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if event.dict["y"] == 1:
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graph.scale += 1
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if event.type == pygame.WINDOWRESIZED:
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screensize = pygame.display.get_window_size()
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graph.on_resize()
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if event.type == pygame.MOUSEBUTTONDOWN:
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if event.button == 1: # Left mouse button
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dragging = True
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old_graph_pos = graph.pos[:]
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old_mouse_pos = pygame.mouse.get_pos()
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if event.type == pygame.MOUSEBUTTONUP:
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if event.button == 1: # Left mouse button
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dragging = False
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if dragging:
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mouse_x, mouse_y = pygame.mouse.get_pos()
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offset_x = mouse_x - old_mouse_pos[0]
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offset_y = mouse_y - old_mouse_pos[1]
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graph.pos[0] = old_graph_pos[0] + offset_x
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graph.pos[1] = old_graph_pos[1] + offset_y
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graph.drawgrid()
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graph.draw()
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graph.calculate()
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print(graph.pos)
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if show_debug:
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get_debug_text()
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## bildschirm aktuallisierung
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pygame.display.flip()
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clock.tick(60)
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screen.fill((0, 0, 0))
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