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Draw random dots within black filled circle
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% | |
% Draw random dots within black filled circle | |
% Dots number from 89 to 299 | |
% | |
for n = 89:299 | |
% Draw filled circle | |
f = figure; | |
filledCircle([0,0], 1,1000, 'k'); | |
hold on; | |
% Data | |
radius = 1; | |
xc = 0; | |
yc = 0; | |
% Engine 2, randn | |
x = randn(1,n); | |
y = randn(1,n); | |
r2 = x.^2+y.^2; | |
r = sqrt(rand(1,n)./r2)*radius; | |
x = xc + r.*x; | |
y = yc + r.*y; | |
% Plot | |
plot(x,y,'.', 'markersize', 15, 'color', [1,1,0.999]); | |
set(f,'visible','off'); | |
axis off | |
% Save to file | |
filename = sprintf('n%d', n); | |
print(f, '-dpdf', '-r300', filename) | |
end |
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function h = filledCircle(center,r,N,color) | |
%--------------------------------------------------------------------------------------------- | |
% FILLEDCIRCLE Filled circle drawing | |
% | |
% filledCircle(CENTER,R,N,COLOR) draws a circle filled with COLOR that | |
% has CENTER as its center and R as its radius, by using N points on the | |
% periphery. | |
% | |
% Usage Examples, | |
% | |
% filledCircle([1,3],3,1000,'b'); | |
% filledCircle([2,4],2,1000,'r'); | |
% | |
% Sadik Hava <sadik.hava@gmail.com> | |
% May, 2010 | |
% | |
% Inspired by: circle.m [Author: Zhenhai Wang] | |
%--------------------------------------------------------------------------------------------- | |
THETA=linspace(0,2*pi,N); | |
RHO=ones(1,N)*r; | |
[X,Y] = pol2cart(THETA,RHO); | |
X=X+center(1); | |
Y=Y+center(2); | |
h=fill(X,Y,color); | |
axis square; | |
% COPYRIGHT STUFF... :D (Since I am modifying Zhenhai's code.) | |
% | |
% Copyright (c) 2002, Zhenhai Wang | |
% All rights reserved. | |
% | |
% Redistribution and use in source and binary forms, with or without | |
% modification, are permitted provided that the following conditions are | |
% met: | |
% | |
% * Redistributions of source code must retain the above copyright | |
% notice, this list of conditions and the following disclaimer. | |
% * Redistributions in binary form must reproduce the above copyright | |
% notice, this list of conditions and the following disclaimer in | |
% the documentation and/or other materials provided with the distribution | |
% | |
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
% POSSIBILITY OF SUCH DAMAGE. |
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