Scheherazade Pumpkin

on 28 Oct 2022

% Scheherazade : A green speckled breed of pumpkin

% Or maybe a tall acorn squash?

% This particular breed is tall and stays green with a hint of yellow

% inside the ridges.

[X,Y,Z]=sphere(200);

R=1-(1-mod(0:.1:20,2)).^2*.06;

x=R.*X;

y=R.*Y;

z=R.*Z;

c=hypot(hypot(x,y),z);

% Several pumpkin breeds with speckles have a different color in

% the dents than on the ridges. To start off, set the CData of the

% surface to be == distance from center iff the pumpkin were round.

% Thus, c is for round (inclusive of ridges) and we squish it into

% a pumpkin shape below in the Z component of the surf call.

% To add speckles, add scaled random noise which will only be

% visible near the boundary of the two colors.

surf(x,y,(.8-(1:-.01:-1)'.^4*.1).*z*1.5,c+randn(201)*.027)

shading interp

% Stem, recycling the sphere coords from above.

surface(X/12,Y/12,Z+.4,c-.12,FaceC='#652',EdgeC='n')

% Use a discreet colormap so that we can simulate speckles.

colormap([1 .7 .1

.3 .4 .2])

axis equal off

% Setup lighting parameters.

% lighting g % Not enough chars.

material([.6 1 .3])

camlight

Open in MATLAB Online