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Partially slice 3D rendered donut along its torodial direction
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@ -43,7 +43,13 @@ function render_frame(A, B)
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local sinB = math.sin(B)
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-- theta goas around the cross-sectional circle of a torus
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for theta=0, 2*math.pi, theta_spacing do
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local theta = 0
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while theta <= 2*math.pi do
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if ( theta < 2*math.pi * 1/8 ) or ( theta > 2*math.pi * 7/8 ) then
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theta = theta + (theta_spacing * 16)
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else
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theta = theta + theta_spacing
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end
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-- precompute sines and cosines of theta
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local costheta = math.cos(theta)
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local sintheta = math.sin(theta)
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