Sedative

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Vinay Ramesh
/
Sedative

on 18 Oct 2024

Cite your audio source here (if applicable):

drawframe(1);

Warning: The LineSmoothing property will be removed in a future release.

Write your drawframe function below

function drawframe(f)
    t = linspace(0,2*pi,200); 
    h = linspace(-2.3,2.3,96);
    a = h(f);
    x = a*sin(3*t)-sin(5*t);
    y = a*cos(3*t)+cos(5*t);
    
    clf;
    hold on;
    addStars(f);
    
    % rainbow color map
    cmap = hsv(200);
    patch(x, y, 1:length(x), 'EdgeColor', 'none', 'FaceColor', 'interp');
    colormap(cmap);
 
    plot(x, y, 'LineWidth', 3, 'Color', [1 1 1]); 
    
    axis equal;
    axis([-3.5 3.5 -3.5 3.5]);
    axis off;  
    set(gcf, 'Color', 'k');
    for i = 1:3
        plot(x, y, 'LineWidth', 6-i, 'Color', [1 1 1, 0.2], 'LineSmoothing', 'on');
    end
    
    hold off;
end
function addStars(f)
    persistent starPositions
    if isempty(starPositions)
        numStars = 50;
        starPositions = 7 * (rand(numStars, 2) - 0.5); 
    end
    for i = 1:size(starPositions, 1)
        if rand < 0.7 
            brightness = 0.5 + 0.5 * sin(f/5 + i);  
            plot(starPositions(i,1), starPositions(i,2), '.', 'Color', [1 1 1] * brightness, 'MarkerSize', 3 + 2*brightness);
        end
    end
end

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