WK1: Necklaces

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Introduction: WK1: Necklaces

I started this project by following the week 1 tutorial. After creating two points, I connected those points to a python script that reads in a series of slider parameter values and uses for loops to procedurally build up a list of points.

These points were then transformed into a list of curves by applying a minimum distance threshold.

The curves were then offset and capped using [OffsetCrv], then transformed into planar surfaces using [Boundary].

The planar surfaces were extruded using [Extr] with a set height, and the final volumetric geometry was boolean union'd together with [SUnion].

Supplies

Rhino, Grasshopper, Pufferfish

Step 1: Adjustments to Find the Amulet

I continued making adjustments to the python code to generate patterns and settled on a pattern that reminded me of a necklace.

Step 2: Fabricating the Amulet

Baking the Grasshopper procedure was straightforward.

Importing to Ultimaker Cura was easy and rewarding to see the gcode toolpath preview.

The amulet is sturdy, satisfying to hold, and will make a fetching necklace.

Step 3: Enter the Spiral

I was curious about integrating a spiral pattern, so I looked up some processing code examples, and added a pattern that would generate a spiral.

The rx slider controls number of rotations, the mod slider controls spiral size.

if(j % 6 == 0):
        count = i*ry + j; 
        count *= 0.02;
        nx = (pt2.X/2) + (count * mod/10) * math.cos(count);
        ny = (pt2.Y/2) + (count * mod/10) * math.sin(count);
        pt.append(rs.CreatePoint(nx, ny));

Step 4: Combining Spiral and Lattice

I was curious what the geometry transformation pipeline would spit out if I superimposed patterns, so I combined the spiral pattern with a lattice pattern.

# Spiral generator
#
if(j % 6 == 0):
    count = i*ry + j;
    count *= 0.02;
    nx = (pt2.X/2) + (count * mod/10) * math.cos(count);
    ny = (pt2.Y/2) + (count * mod/10) * math.sin(count);
    pt.append(rs.CreatePoint(nx, ny));

# Lattice generator
#
if((i + j/2) % mod == 0 or (i - j/2) % mod == 0):
    pt.append(rs.CreatePoint(x-pt2.X, y-pt2.Y, 0.0))

The result was satisfying. Because both patterns are dependent on the "mod" input variable, tweaks to this slider result in significant changes to the overall composition.

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    6 Comments

    0
    sambourgault
    sambourgault

    1 year ago on Step 4

    I find your combination of the spiral pattern and the lattice pattern very compelling and inspiring for future work. It brings the parametric setup established in this first project to a new level: originally unrelated objects become related through the use of a common parameter. I'd be curious to see a little video (like the one above!) of the effect of mod on the mesh. Looking at your previous video makes me realize the performative potentiality of (almost) instantaneous parametric design within Rhino+GH.

    0
    kobernik
    kobernik

    Reply 1 year ago

    Performative potential of rhino+gh is very cool to think about!

    Performance of the system results in geometry that can be fabricated. Dig dig dig it.

    0
    weidi
    weidi

    1 year ago

    Thank you for sharing the documentation video! it looks great

    0
    stejaraiulia
    stejaraiulia

    1 year ago

    Spiral pattern is super cool, as well as your 3D printed output! Video of the spiral is fantastic, showing exactly what that parameter is doing.

    0
    soniahashim
    soniahashim

    1 year ago

    I really liked the video in your documentation and the idea of the superimposed spiral and lattice. I'd be curious to know more about how experience with the first amulet led to your investigation those two patterns (e.g. did have something to do with the density of the geometry)? It's a great effect!

    0
    jas0126
    jas0126

    1 year ago

    I really like your spiral pattern. Thank you for sharing the code!