六边形格子，随机用黑色和白色上色

问题描述

我正在尝试绘制一个(10,000 x 10,000)六边形的格子，该格子随机是一半黑与一半白色.我不知道如何将这个格子的六边形随机填充为黑白.(这是我从此代码中真正想要的示例，但我无法实现.).代码(用matlab编写):

I am trying to draw a (10,000 x 10,000) hexagonal lattice which is randomly half black and half white.I don't know how to fill hexagons of this lattice randomly to black and white.(this is a sample of what i really want from this code but I couldn't make it.).here is the code(written in matlab):

clc
x=input('enter the value of x: ');
y=input('enter the value of y: ');
r=input('enter the value of R: ');
n=input('enter the value of N: ');
d=sqrt(3*n)*r

axis([0 x 0 y ])

c=r;
v=30:60:390;
cv=r*cosd(v);
sv=r*sind(v);

for y=0:2:y
for w=0:2:x
line(w*sqrt(3)/2*c+cv,y*1.5*c+sv,'tag','h');
end
end


for m=1:2:y
for k=1:2:x
line(k*sqrt(3)/2*c+cv,m*1.5*c+sv,'tag','h');
end
end

有人可以帮我吗?

推荐答案

您可以使用 patch .这种方法比循环绘制fill六边形的六边形要快得多.

You can plot multiple filled polygons using patch. This approach is extremely faster than drawing hexagons with fill one by one in a loop.

m = 100; % horizontal count
n = 50; % vertical count
blackratio = 0.5; % here you can choose the ratio of black hexagons
blacks = rand(m, n) > blackratio;
hexcount = sum(blacks(:));
whitecount = m * n - hexcount;

% parametric definition of a hexagon
t = (1/12:1/6:1)' * 2 * pi;
x = cos(t);
y = sin(t);

% coordinates of all black hexagons
Xb = zeros(6, hexcount);
Yb = zeros(6, hexcount);

% coordinates of all white hexagons
Xw = zeros(6, whitecount);
Yw = zeros(6, whitecount);

d=sqrt(3)/2;
bcount = 0;
wcount = 0;
for ii = 1:m
    for jj = 1:n
        if blacks(ii, jj)
            bcount = bcount + 1;
            Xb(:, bcount) = x + d * (mod(2 * ii + jj, 2 * m));
            Yb(:, bcount) = y + 1.5 * jj;
        else
            wcount = wcount + 1;
            Xw(:, wcount) = x + d * (mod(2 * ii + jj, 2 * m));
            Yw(:, wcount) = y + 1.5 * jj;
        end
    end
end

figure; hold on
patch(Xb, Yb, 'k', 'EdgeColor', 'None')
patch(Xw, Yw, 'w', 'EdgeColor', 'None')
axis equal off

这将为您提供所需的输出:

This gives you the desired output:

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