View difference between Paste ID: CsZaBgQm and 703uvn9C

 # CIRCLE DEMO
 
 # By Jaseman - 22nd August 2012
 
 import os, random, pygame; from pygame.locals import *
 from math import sin, cos, pi
 pygame.init(); clock = pygame.time.Clock()
 os.environ['SDL_VIDEO_WINDOW_POS'] = 'center'
 pygame.display.set_caption("Circle Demo")
 screen=pygame.display.set_mode((800,600),0,32)
 
 bk=pygame.Surface((800,600)); bk.fill((0,64,0))
 dot=pygame.Surface((4,4)); dot.set_colorkey([0,0,0])
 pygame.draw.circle(dot,(255,255,255),(2,2),2,0)
 
-smlradius = 60; bigradius = 120; points = 160
+smlradius = 60; bigradius = 120; points = 90
 # Variable Arrays To Store X&Y points for a small and big circle
 smcx = []; smcy = []; bgcx = []; bgcy = []
 
-# Calculate the X&Y points and put values into the array
+# Calculate the X&Y points and put values into the array
 angleStep = pi *2 / points
 for a in range(0,points):
 	smcx.append(sin(a * angleStep)*smlradius)
 	smcy.append(cos(a * angleStep)*smlradius)
 	bgcx.append(sin(a * angleStep)*bigradius)
 	bgcy.append(cos(a * angleStep)*bigradius)
 
 a=0; b=0 # Points a & b will be moving points of the circles
-a=points-1; b=0 # Points a & b will be moving points of the circles
+c=0; d=0 # Points for sine and cosine waves
 cx=800/2; cy=600/2 # Centre of the screen
 r=random.randint; pdl=pygame.draw.line # Abbreviations for commands
 
-run=1
+run = 1
 while run == 1:
 
 	screen.blit(bk,(0,0)) # Draw the background surface
 	screen.blit(dot,(cx-2,cy-2)) # Centrepoint
-	rcol=r(0,255); gcol=r(0,255);bcol=r(0,255) # Random Red Green Blue
+
 	# Draw the circle
-	# A line from point 'a' on small circle to point 'a' on big circle
+	screen.blit(dot, (bgcx[a]+cx-2,bgcy[a]+cy-2))
-	pdl(bk,[rcol,gcol,bcol],(smcx[a]+cx,smcy[a]+cy),(bgcx[a]+cx,bgcy[a]+cy))
+	screen.blit(dot, (smcx[a]+cx-2,smcy[a]+cy-2))
-	rcol=r(0,255); gcol=r(0,255);bcol=r(0,255)
+	screen.blit(dot, (bgcx[b]+cx-2,bgcy[b]+cy-2))
 	screen.blit(dot, (smcx[b]+cx-2,smcy[b]+cy-2))
-	# A line from Centrepoint to point 'b' on small circle
+	rcol=r(0,255); gcol=r(0,255); bcol=r(0,255)
-	pdl(bk,[rcol,gcol,bcol],(cx-2,cy-2),(smcx[b]+cx,smcy[b]+cy))
+	pdl(bk,[rcol,gcol,bcol],(bgcx[a]+cx-2,bgcy[a]+cy-2),(smcx[a]+cx-2,smcy[a]+cy-2))
 	pdl(bk,[rcol,gcol,bcol],(bgcx[b]+cx-2,bgcy[b]+cy-2),(smcx[b]+cx-2,smcy[b]+cy-2))
-	# Some dots to highlight points 'a' & 'b' on both circles
+	pdl(bk,[rcol,gcol,bcol],(smcx[a]+cx-2,smcy[a]+cy-2),(smcx[b]+cx-2,smcy[b]+cy-2))
-	screen.blit(dot,(smcx[a]+cx-2,smcy[a]+cy-2))
+
-	screen.blit(dot,(bgcx[a]+cx-2,bgcy[a]+cy-2))
+	# Constrained points (Fixed X or Y)
-	screen.blit(dot,(smcx[b]+cx-2,smcy[b]+cy-2))
+	screen.blit(dot, (bgcx[a]+cx-2,cy-bigradius-14))
 	screen.blit(dot, (bgcx[b]+cx-2,cy+bigradius+10))
-	# Another circle offset to the right with horizontal lines
+	screen.blit(dot, (smcx[a]+cx-2,cy-bigradius-34))
-	rcol=r(0,255); gcol=r(0,255);bcol=r(0,255)
+	screen.blit(dot, (smcx[b]+cx-2,cy+bigradius+30))
-	pdl(bk,[rcol,gcol,bcol],(smcx[a]+cx+250,smcy[a]+cy),(smcx[b]+cx+250,smcy[b]+cy))
+	screen.blit(dot, (cx-bigradius-14,bgcy[a]+cy-2))
-	screen.blit(dot,(smcx[a]+cx+250,smcy[a]+cy))
+	screen.blit(dot, (cx-bigradius-34,smcy[a]+cy-2))
-	screen.blit(dot,(smcx[b]+cx+250,smcy[b]+cy))
+	screen.blit(dot, (cx+bigradius+14,bgcy[b]+cy-2))
-	screen.blit(dot,(bgcx[a]+cx+250,bgcy[a]+cy))
+	screen.blit(dot, (cx+bigradius+34,smcy[b]+cy-2))
-	screen.blit(dot,(bgcx[b]+cx+250,bgcy[b]+cy))
+	pdl(bk,[rcol,gcol,bcol],(bgcx[a]+cx-2,cy-bigradius-14),(smcx[a]+cx-2,cy-bigradius-34))
 	pdl(bk,[rcol,gcol,bcol],(bgcx[b]+cx-2,cy+bigradius+10),(smcx[b]+cx-2,cy+bigradius+30))
-	# Offset dots with fixed x or y points
+	pdl(bk,[rcol,gcol,bcol],(cx-bigradius-14,bgcy[a]+cy-2),(cx-bigradius-34,smcy[a]+cy-2))
-	screen.blit(dot,(240,smcy[a]+cy-2))
+	pdl(bk,[rcol,gcol,bcol],(cx+bigradius+14,bgcy[b]+cy-2),(cx+bigradius+34,smcy[b]+cy-2))
-	screen.blit(dot,(200,bgcy[a]+cy-2))
+
-	screen.blit(dot,(smcx[a]+cx-2,460))
+	# Ellipse (Big and Small Radius points mixed)
-	screen.blit(dot,(bgcx[a]+cx-2,500))
+	screen.blit(dot, (bgcx[a]+cx-2+bigradius+160,smcy[a]+cy-2))
 	screen.blit(dot, (smcx[a]+cx-2-bigradius-160,bgcy[a]+cy-2))
-	# Offset dots using a combo of small and big circle points (Ellipse)
+
-	screen.blit(dot,(bgcx[a]+cx-2,smcy[b]+cy-2-220))
+	screen.blit(dot, (cx-2+bigradius+160,cy-2))
-	screen.blit(dot,(smcx[a]+cx-2-320,bgcy[b]+cy-2))
+	screen.blit(dot, (cx-2-bigradius-160,cy-2))
 	pdl(bk,[rcol,gcol,bcol],(cx-2+bigradius+160,cy-2),(bgcx[a]+cx-2+bigradius+160,smcy[a]+cy-2))
-	clock.tick(100); pygame.display.update(); a=a-1; b=b+1
+	pdl(bk,[rcol,gcol,bcol],(cx-2-bigradius-160,cy-2),(smcx[a]+cx-2-bigradius-160,bgcy[a]+cy-2))
-	if a<=1: a=points-1 # Restart the loop for point A
+
-	if b>=points-1: b=1 # Restart the loop for point B
+	# Sine and Cosine Waves
 	screen.blit(dot, (c,smcy[a]+cy-2-bigradius-100))
 	c=c+1
 	if c>=800: c=0
 	screen.blit(dot, (smcx[a]+cx-2-bigradius-100,d))
 	d=d+1
 	if d>=600: d=0
 
 	clock.tick(200); pygame.display.update(); a=a-1; b=b+1
 	if b>=points: b=0
 	if a==-1: a=points-1