Added changable scale

slider.py

@@ -22,6 +22,7 @@ class Slider:
     pygame.draw.circle(screen, RED, (int(handle_x), self.rect.centery), self.rect.height // 2)
 
   def handle_event(self, event):
+    print("hi")
     if event.type == pygame.MOUSEBUTTONDOWN:
       if self.rect.collidepoint(event.pos):
         self.grabbed = True

test2.py

@@ -1,12 +1,17 @@
 import pygame
 import sys
 import math
+from sensor import Sensor
+from particle import Particle
+from slider import Slider
 
 SCREEN_WIDTH = 1352
 SCREEN_HEIGHT = 878
 
 scale = 1 * pow(10, -8)
 
+sensor = Sensor((50*pow(10, -9)) / scale, (200 * pow(10,-9)) / scale, (300 * pow(10, -9)) / scale)
+
 pygame.init()
 pygame.display.set_caption("CytoSim")
 
@@ -20,16 +25,25 @@ while True:
       sys.exit()
     if event.type == pygame.VIDEORESIZE:
       screen = pygame.display.set_mode((event.w, event.h), pygame.RESIZABLE)
+    if event.type == pygame.MOUSEWHEEL:
+      print("SCROLL")
+      if event.y == 1:
+        scale = scale / 1.1
+      elif event.y == -1:
+        scale = scale * 1.1
 
   x, y = screen.get_size()
 
-  screen.fill((0,0,105))
+  screen.fill((200,100,5))
+
+  sensor.generate(x, y, screen)
 
   pygame.draw.circle(screen, (150,255,10), (x / 2, y /2), 3 * pow(10, -6) / scale)
 
   pygame.draw.line(screen, (255,255,255), (x - (x * .1), y - (y * .1)), ((x - (x * .1)) - (1 * pow(10, -6) / scale), y - (y * .1)))
 
-  print((1 *pow(10, -6)) / scale)
+  print(scale)
+  #print((1 *pow(10, -6)) / scale)
 
   pygame.display.update()