58 lines
1.5 KiB
Matlab
58 lines
1.5 KiB
Matlab
function drawODOverlays(x1, y1, x2, y2)
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% Parameters
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tick_spacing = 10; % µm between ticks
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tick_length = 2; % µm tick mark length
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line_color = [0.5 0.5 0.5];
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tick_color = [0.5 0.5 0.5];
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font_size = 10;
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% Vector from start to end
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dx = x2 - x1;
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dy = y2 - y1;
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L = sqrt(dx^2 + dy^2);
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% Unit direction vector along diagonal
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ux = dx / L;
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uy = dy / L;
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% Perpendicular unit vector for ticks
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perp_ux = -uy;
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perp_uy = ux;
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% Midpoint (center)
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xc = (x1 + x2) / 2;
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yc = (y1 + y2) / 2;
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% Number of positive and negative ticks
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n_ticks = floor(L / (2 * tick_spacing));
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% Draw main diagonal line
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plot([x1 x2], [y1 y2], '--', 'Color', line_color, 'LineWidth', 1.2);
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for i = -n_ticks:n_ticks
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d = i * tick_spacing;
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xt = xc + d * ux;
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yt = yc + d * uy;
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% Tick line endpoints
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xt1 = xt - 0.5 * tick_length * perp_ux;
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yt1 = yt - 0.5 * tick_length * perp_uy;
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xt2 = xt + 0.5 * tick_length * perp_ux;
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yt2 = yt + 0.5 * tick_length * perp_uy;
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% Draw tick
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plot([xt1 xt2], [yt1 yt2], '--', 'Color', tick_color, 'LineWidth', 1);
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% Label: centered at tick, offset slightly along diagonal
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if d ~= 0
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text(xt, yt, sprintf('%+d', d), ...
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'Color', tick_color, ...
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'FontSize', font_size, ...
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'HorizontalAlignment', 'center', ...
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'VerticalAlignment', 'bottom', ...
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'Rotation', atan2d(dy, dx));
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end
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end
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end |