Update

1 files changed, 159 insertions, 0 deletions

diff --git a/math-draw.py b/math-draw.py
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index 0000000..544870e
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+++ b/math-draw.py
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+############################################
+# Made by Jakob Stendahl 
+# Feel free to comit and add your name :[]
+############################################
+
+# Imports
+import turtle
+import math
+
+def setup():
+	global startPosition # Et referansepunkt for sentrum + radius
+	global center # Et array med koordinatene til sentrum "0, 0" trengs for noen funksjoner
+	global radiusInt # Hvor stor radiusen er
+	global pointsInt # Hvor mange punkter det skal vaere rundt sirkelbuen
+	global multiplier # Hva gjeldene punkt skal ganges med for aa finne motstaaende punkt
+	global pointsArray # Array med plasseringen til alle punktene paa sirkelbuen
+	global differAngle # Vinkelen mellom hvert punkt fra sentrum
+	global currentHeading
+
+	center = (0, 0)
+	radiusInt = 320
+	pointsInt = 300
+	multiplier = 3
+	pointsArray = [[0 for x in range(pointsInt)] for x in range(pointsInt)] 
+
+def drawPolygon(t, sideLength, numSides):
+    turnAngle = 360 / numSides
+    for i in range(numSides):
+        t.forward(sideLength)
+        t.right(turnAngle)
+
+def drawCircle(anyTurtle, radius):
+    circumference = 2 * 3.14159265359 * radius
+    sideLength = circumference / 360
+    drawPolygon(anyTurtle, sideLength, 360)
+
+def calculatePoints(center, radius, intPoints, t):
+	global differAngle
+	fullCircle = 360
+	differAngle = float(fullCircle) / float(pointsInt)
+
+	foreachDivider = pointsInt
+	currDegree = 30 # sett til 90 for aa starte fra toppen
+	test = 0
+	print differAngle
+	for i in xrange(foreachDivider):
+		print i
+		t.setx(0)
+		t.sety(0)
+		t.setheading(currDegree)
+		#t.pendown()
+		t.forward(radiusInt)
+		t.penup()
+		currDegree = currDegree - differAngle
+		#t.dot()
+		turtle.update()
+		print t.pos()
+		pointsArray[i][0] = t.pos()[0]
+		pointsArray[i][1] = t.pos()[1]
+
+def drawChord(t):
+	global currentHeading
+	currentPoint = 1
+	
+	t.setheading(0)
+	currentHeading = 0
+	#t.tracer(True)
+	for i in pointsArray:
+		nextPoint = currentPoint*multiplier 
+		#print nextPoint
+
+		while True:
+			if nextPoint <= pointsInt:
+				break
+			if nextPoint >= (pointsInt):
+				nextPoint = nextPoint - pointsInt
+
+
+		#print nextPoint
+
+		#if nextPoint >= pointsInt:
+			#break
+
+		x = nextPoint-currentPoint
+		angleMultiplier = differAngle*x
+		chordLengthOne = (radiusInt**2+radiusInt**2-2*radiusInt*radiusInt*math.cos(math.radians(angleMultiplier))) # a = radius^2 + radius^2 - 2 * radius * radius * cosVinkel
+		chordLengthOne = math.sqrt(chordLengthOne)
+
+		t.setx(i[0])
+		t.sety(i[1])
+
+		nextPointHeading = t.towards(pointsArray[nextPoint-1][0], pointsArray[nextPoint-1][1])         
+		
+
+		
+		t.setheading(nextPointHeading)
+
+		t.setx(i[0])
+		t.sety(i[1])
+
+		turtle.update()
+		t.pendown()
+		t.forward(chordLengthOne)
+		t.penup()
+		print currentPoint
+		currentPoint = currentPoint + 1
+		if currentPoint > (pointsInt):
+			break
+		
+
+
+
+def main():
+	# Definer "skilpadde"
+	wn = turtle.Screen()
+	wheel = turtle.Turtle()
+
+	# Skru av tegne-animasjon
+	wheel.tracer(False)
+	#turtle.tracer(0, 0)
+
+	# Faa sirkelen til aa starte aa tegnes radius fra sentrum
+	wheel.penup()
+	wheel.sety(radiusInt)
+	startPosition = wheel.pos()
+
+	# Tegn teksten
+	wheel.penup()
+	wheel.setx(-300)
+	currXY = wheel.pos()
+	wheel.pendown()
+	wheel.write("Radius: " + str(radiusInt))
+	wheel.penup()
+	wheel.sety(currXY[1] + 10)
+	wheel.pendown()
+	wheel.write("Points: " + str(pointsInt))
+	wheel.penup()
+
+	# Tegn sirkelen
+	wheel.goto(startPosition)
+	wheel.pendown()
+	drawCircle(wheel, radiusInt)
+	wheel.penup()
+
+	# Calculate points
+	calculatePoints(center, radiusInt, pointsInt, wheel)
+
+	# tegn korder
+	drawChord(wheel)
+
+
+  	# Skjul skilpadden
+  	wheel.hideturtle()
+
+  	turtle.update() # Refresh screen
+	wn.exitonclick()
+
+setup()
+main()
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