How can I make a shape's color fade more and more over time?

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Gimil
Gimil 2014-4-22
回答： Hamid Radmard Rahmani 2018-12-24
The code below sets each shape to have the same transparency.
hold on; grid on;
axis equal;
scale = .9;
movex = 0;
movey = 0;
squarex = [0 1 1 0];
squarey = [0 0 1 1];
for i = 1:11
squarex = (squarex * scale + movex);
squarey = (squarey * scale + movey);
movex = movex +1;
movey = movey +1;
h = fill(squarex,squarey,'r');
set(h,'facealpha',.7);
pause (.3)
end

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采纳的回答

Image Analyst
Image Analyst 2014-4-22
Just make a transparency array
transparency = linspace(0, 1, 11); % Make 11 transparencies from 0 to 1 inclusive.
Then
set(h,'facealpha', transparency(i));

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Hamid Radmard Rahmani

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