I was transferring tasks from my maths textbook to Processing. One of the problems required the use of a parabola. I decided to write it as a Bézier curve, wrote the code, but something didn't work. Could anyone please explain to me what I did wrong here?
The code:
def setup():
background(255,255,255)
size(800,800)
rectMode(CENTER)
line(400,0,400,800)
line(0,400,800,400)
#B 0 to know the start and the end points
a=1
x=3
b=0
c=10
translate(width/2, height/2)
noFill()
beginShape()
#Parabola formula
y=-(a*x*x b*x c)
#X of the point of the symetry
Sx=(-b)/(2*a)
#Y of the point of the symetry
Sy=-(a*Sx*Sx b*Sx c)
#Derivative
Ny=-(800 b)
#Y of the starting point
By=-(a*400*400-b*400 c)
#Y of the end point
Ey=-(a*400*400 b*400 c)
#Y3 Y4
Ty=Ny*(x 400)-By
bezier(-400,By,Sx,Ty,400,Ey,Sx,Ty)
endShape()
noFill()
beginShape()
for i in range (-400,400):
x=i
y=-i
vertex(x,y)
endShape()
(It had to be an 800x800 coordinate plane, a parabola and a straight line.)
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