Learning Forum

[z5360540]

Context: Need to generate a parmetric cylindrical geometry as seen below.

Problem: I generated the points needed for the surface but I don't know how to join the dots to generate the surface.

Summary of code: Generates x,y an z coordinates of points along surface. Draws curves that links up the surface (this is the best I can do right now). Image below shows this.

Help wanted:

1) Is there a method or function that can help me connect these points to form a surface?

2) Is there a better way of creating this geometry? E.g. instead of generating x,y and z locations for points and generating a surface you can use the equation feature in space-claim and revolve it (NB: Tried this method - was unable to include record equation in script and as a result unable to parametrise it)

Code so far:

import math

# Define parameters
D = 0.06  # Diameter of the cylinder (meters)
A = 0.0016  # Amplitude of sinusoidal wave (meters)
W = 0.02  # Wavelength of sinusoidal wave (meters)
length = 0.15  # Length of the cylinder (meters)
segments = 100  # Number of points used to make the structure
revolution_steps = 36  # Number of steps for full 360° revolution

# Create a list to store the 3D coordinates
ptList = List[Point]()

# Generate the 3D points by revolving the profile
for i in range(segments):
    x = i * (length / (segments - 1))
    y_base = (D / 2) + A * math.sin((2 * math.pi / W) * x)  # Radius at current x

    # Generate points along the revolution
    for j in range(revolution_steps):
        angle = (2 * math.pi / revolution_steps) * j  # Angle for revolution
        y = y_base * math.cos(angle)  # Rotate radius in the yz-plane
        z = y_base * math.sin(angle)
        
        # Create a point and add to the list
        ptList.Add(Point.Create(x, y, z))

# Create the NURBS curve from the points
ncurve = NurbsCurve.CreateThroughPoints(False, ptList, 0.0001)

# Create a curve segment from the NURBS curve
curveSegment = CurveSegment.Create(ncurve)

# Create a design curve from the segment
designCurve = DesignCurve.Create(GetRootPart(), curveSegment)

[Atharv Joshi]

Hello, 

 

I think this is creating a continuous curve but is open ended. 

Instead you can think of an approach of creating crest and trough and then use blend tool. 

You can also use guide curve to follow the geometric shape.  

 

 

Thanks and Regards

Atharv