Algorithmic Glider Design— Stitching Surfaces
<p>So now we have concave surfaces, we need something better than the pyramid shape to start from.</p>
<p>I took a traces outline of an aerofoil that I wanted to extrude into 3D:</p>
<p><img alt="" src="https://miro.medium.com/v2/resize:fit:700/1*tseaSM1rkIkf1lz6ND8tcg.jpeg" style="height:424px; width:700px" /></p>
<p>Traced resolution: 0.5 in y and 1 in x</p>
<p>To turn this into a solid I needed to extrude the points along the z direction.</p>
<p>This was straightforward, keeping the points indexable in a list, I went around the profile <code>depth / z_resolution</code> times, adding new points with <code>(x_i, y_i, i * z_resolution)</code> each time.</p>
<p>To stitch together the surfaces, I traced the top surface from the point of extrusion:</p>
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