Draw sphere with slats
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I would like to draw a hemisphere with slats as attached figures. 12 identical slits created in hemisphere, and width slit and width slat are equal.
2 个评论
michio
2016-9-2
Stephen23
2016-9-2
Duplicate:
@viet le: please do not post duplicate questions. This actually makes it harder for us to help you, because it makes it hard for us to keep track of what information and explanations you have given, and also what answer and advice you have already been given.
If you want to add information to a question than please add comments to your original question.
采纳的回答
function hemispherewithstripes
clf
Nstripes = 12;
stripecolor = 'r';
Nhemicircles = 2*Nstripes;
r = 1; % radius of half-sphere
Npoints = 100; % number of points along each hemicircle
angle = linspace(0, pi, Npoints);
% xyz coordinates of a single hemicircle
x = r*cos(angle) + 1;
y = zeros(size(angle));
z = r*sin(angle);
% rotate hemicirclec
%rotation angle:
theta = linspace(-pi/2, pi/2, Nhemicircles);
% xyz coordinates of rotated hemicircles; preallocate for speed
XYZ(Npoints, 3, Nstripes) = 0;
for i = 1:Nhemicircles
% rotation matrix along x-direction:
Rotx = [1 0 0;
0 cos(theta(i)) sin(theta(i));
0 -sin(theta(i)) cos(theta(i))];
XYZ(:,:,i) = [x(:) y(:) z(:)]*Rotx;
% uncomment to plot hemicircles
% plot3(XYZ(:,1,i), XYZ(:,2,i), XYZ(:,3,i), 'k'), hold on
end
hold on
% plot patch between every two hemicircles
for i=1:2:Nhemicircles
patch([XYZ(:,1,i)' flipud(XYZ(:,1,i+1))'],...
[XYZ(:,2,i)' flipud(XYZ(:,2,i+1))'],...
[XYZ(:,3,i)' flipud(XYZ(:,3,i+1))'],...
stripecolor, 'EdgeColor', stripecolor)
end
view(3) % set default 3D viewing axes
2 个评论
See my answer to the original question for a much simpler solution:
Thorsten
2016-9-2
You're right, much simpler solution.
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