How to draw a pineapple

as requested on support…

I’m having difficulty drawing curves, for example I want to create a pineapple

First, source a suitable public domain image:

While this could be done using Image Tracing:

We will instead, launch Carbide Create:

and Set Background to import the image:

Load Image

and adjust the scaling and positioning as desired

Done

If need be, adjust Job Setup as described at:

then, begin drawing…

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Note that Node Editing changed recently:

https://carbide3d.com/blog/carbide-create-node-editing/

There are two notable approaches for drawing:

  • draw all the details one-by-one, usually from inside → out, which will (eventually) result in the drawing being compleat
  • draw the largest outlines first and work one’s way down to the smaller details

Both are valid, and either might be used, depending on the design in question and the tools being used. The former approach bumps into a notable limitation in Carbide Create — offsetting to the outside will result in points being rounded off with a radius equal to the offset. Because of that, and the fact that the points of the leaves need to be pointy, we will begin by drawing the outline/perimeter.

Since the design is left–right symmetrical, we will be able to take something of a shortcut and only draw half.

Start by turning off Snap to Grid, since this is an organic design:

then, begin drawing by clicking to place points with the polyline tool:

Points should be placed as sudden transitions of directions, extrema (left/right, top/bottom), and points of inflection (the middle of an s curve).

continue placing points

(note the point being placed at the top curve of the leaf)

Done

To ensure that the design may be easily mirrored, draw a rectangle a bit taller than the design:

and adjust the begin/end points using Node Editing to ensure that they cross that vertical line:

(maybe the original isn’t as symmetrical as I thought — the vector drawing however, will be)

Done

Then, go back into Node Edit mode and zoom/pan in on each section of curve:

and adjust the position of each on-curve point to match the outline:

t

and then adjust the type of curve, in this case by tapping u for Cusp:

and then adjust the off-curve nodes:

and repeating this for the balance of the curves:

u

u

If one has a problem when drawing, saving and re-open

Repeat this for each curve/curve segment until one arrives at…

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Done

shift-click on the rectangle to add it to the selection:

and use Trim Vectors

to remove the ends of the drawn geometry and ensure that they are vertically aligned so as to facilitate the mirroring

OK

shift-click on the drawn geometry to remove it from the selection:

and delete the rectangle

re-select the drawn geometry:

and copy-paste:

and Mirror Horizontal

and drag it into registration with the original

(obviously, it will be necessary to draw half and mirror it)

Select both halves

Join Vectors

Yes

which makes a closed region:

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Drawing a circle allows us to get the line weight:

which may then be used to inset the geometry:

Apply

which nets us some finished geometry without drawing (once we use Node Editing to cut each section)

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Zoom in on each section:

and use Node Editing to isolate the inset geometry which we wish to avail ourselves of:

right-click

Cut Vector

right-click

Cut Vector

and clean up the ends

d

d

d

Done

zoom out to see the region which needs to be re-drawn

and use the Polyline tool to fill in the desired geometry

Select both all the geometry which one wishes to work with:

and use Join Vectors

Then go back into Node Edit mode

and adjust as desired.

(apparently there will be sufficient adjustment for the lack of symmetry to make imposing symmetry an inefficiency, rather than the halving of effort which one might wish for)

Repeat the above for each element of the drawing until one arrives at…

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