How to create triangle and animate it?
显示 更早的评论
I'm using this code to start but hasnt worked. patch command is giving error and not sure how to resolve it. Please help.
w0 = 1 ;
w1 = 0.5 ;
N = 5 ;
ww = linspace(w1,w0,N) ;
W = [fliplr(ww) ww] ;
ar=0.866; % Aspect ratio for equilateral triangle
h=ar*W;%height of triangle
for i = 1:length(W)
x=[0 W W/2];%x coordinates of vertices
y=[0 0 h];%y coordinates of vertices
patch(x,y,'white')
set(gca,'Color','k','xticklabel',[],'yticklabel',[])
drawnow
pause(0.1)
end
4 个评论
Binbin Qi
2020-9-2
the length of x and y are not the same.
Rik
2020-10-3
I'm using this code to start but hasnt worked. patch command is giving error and not sure how to resolve it. Please help.
w0 = 1 ;
w1 = 0.5 ;
N = 5 ;
ww = linspace(w1,w0,N) ;
W = [fliplr(ww) ww] ;
ar=0.866; % Aspect ratio for equilateral triangle
h=ar*W;%height of triangle
for i = 1:length(W)
x=[0 W W/2];%x coordinates of vertices
y=[0 0 h];%y coordinates of vertices
patch(x,y,'white')
set(gca,'Color','k','xticklabel',[],'yticklabel',[])
drawnow
pause(0.1)
end
Rena Berman
2020-10-8
(Answers Dev) Restored edit
采纳的回答
Ameer Hamza
2020-9-2
Try this
w0 = 1 ;
w1 = 0.5 ;
N = 5 ;
ww = linspace(w1,w0,N) ;
W = [fliplr(ww) ww] ;
ar=0.866; % Aspect ratio for equilateral triangle
h=ar*W;%height of triangle
fig = figure();
ax = axes();
set(ax,'Color','k','xticklabel',[],'yticklabel',[])
ax.XLim = [0 1];
ax.YLim = [0 1];
p = patch([0 0 0], [0 0 0], 'w');
for i = 1:length(W)
x = [0 W(i) W(i)/2];%x coordinates of vertices
y = [0 0 h(i)];%y coordinates of vertices
p.Vertices = [x.' y.'];
drawnow
pause(0.1)
end
2 个评论
Ron
2020-9-2
Ameer Hamza
2020-9-2
I am glad to be of help!
Try this
w0 = 1 ;
w1 = 0.5 ;
N = 5 ;
ww = linspace(w1,w0,N) ;
W = [fliplr(ww) ww] ;
ar=0.866; % Aspect ratio for equilateral triangle
h=ar*W;%height of triangle
n = 200; % number of triangles
area = 20; % 10x10 square for all the triangles
triangle_locations = area*rand(n, 2); % location of triangles
fig = figure();
ax = axes();
set(ax,'Color','k','xticklabel',[],'yticklabel',[])
ax.XLim = [0 area];
ax.YLim = [0 area];
p = gobjects(1, n);
for i=1:n
p(i) = patch([0 0 0], [0 0 0], 'w');
end
for i = 1:length(W)
for k = 1:n
x = [0 W(i) W(i)/2] + triangle_locations(k, 1);%x coordinates of vertices
y = [0 0 h(i)] + triangle_locations(k, 2);%y coordinates of vertices
p(k).Vertices = [x.' y.'];
end
pause(0.1)
end
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