R/xsplineTangent.s1neg.s2neg.A0.A3.y.R

In vwline: Draw Variable-Width Lines

xsplineTangent.s1neg.s2neg.A0.A3.y <- function(px0, px1, px2, px3, py0, py1, py2, py3, s1, s2, t) {
((((-t) * ((-t) * ((-t) * (-t) * (-s1) - ((-t) + (-t)) * 
    (-2 * (-s1) - (-t) * (-s1))) - (2 * (-s1) + (-t) * (-t) * 
    (-2 * (-s1) - (-t) * (-s1)))) - ((-s1) + (-t) * (2 * (-s1) + 
    (-t) * (-t) * (-2 * (-s1) - (-t) * (-s1))))) * py0 - ((1 - 
    t) * ((1 - t) * ((1 - t) * ((1 - t) * (4 - 5 * (-s2)) + (14 * 
    (-s2) - 11 + (1 - t) * (4 - 5 * (-s2)))) + (8 - 12 * (-s2) + 
    (1 - t) * (14 * (-s2) - 11 + (1 - t) * (4 - 5 * (-s2))))) + 
    (2 * (-s2) + (1 - t) * (8 - 12 * (-s2) + (1 - t) * (14 * 
        (-s2) - 11 + (1 - t) * (4 - 5 * (-s2)))))) + ((-s2) + 
    (1 - t) * (2 * (-s2) + (1 - t) * (8 - 12 * (-s2) + (1 - t) * 
        (14 * (-s2) - 11 + (1 - t) * (4 - 5 * (-s2))))))) * py1 + 
    (((-s1) + t * (2 * (-s1) + t * (8 - 12 * (-s1) + t * (14 * 
        (-s1) - 11 + t * (4 - 5 * (-s1)))))) + t * ((2 * (-s1) + 
        t * (8 - 12 * (-s1) + t * (14 * (-s1) - 11 + t * (4 - 
            5 * (-s1))))) + t * ((8 - 12 * (-s1) + t * (14 * 
        (-s1) - 11 + t * (4 - 5 * (-s1)))) + t * ((14 * (-s1) - 
        11 + t * (4 - 5 * (-s1))) + t * (4 - 5 * (-s1)))))) * 
        py2 + (((-s2) + (t - 1) * (2 * (-s2) + (t - 1) * (t - 
    1) * (-2 * (-s2) - (t - 1) * (-s2)))) + (t - 1) * ((2 * (-s2) + 
    (t - 1) * (t - 1) * (-2 * (-s2) - (t - 1) * (-s2))) + (t - 
    1) * (((t - 1) + (t - 1)) * (-2 * (-s2) - (t - 1) * (-s2)) - 
    (t - 1) * (t - 1) * (-s2)))) * py3)/((-t) * ((-s1) + (-t) * 
    (2 * (-s1) + (-t) * (-t) * (-2 * (-s1) - (-t) * (-s1)))) + 
    (1 - t) * ((-s2) + (1 - t) * (2 * (-s2) + (1 - t) * (8 - 
        12 * (-s2) + (1 - t) * (14 * (-s2) - 11 + (1 - t) * (4 - 
        5 * (-s2)))))) + t * ((-s1) + t * (2 * (-s1) + t * (8 - 
    12 * (-s1) + t * (14 * (-s1) - 11 + t * (4 - 5 * (-s1)))))) + 
    (t - 1) * ((-s2) + (t - 1) * (2 * (-s2) + (t - 1) * (t - 
        1) * (-2 * (-s2) - (t - 1) * (-s2))))) - ((-t) * ((-s1) + 
    (-t) * (2 * (-s1) + (-t) * (-t) * (-2 * (-s1) - (-t) * (-s1)))) * 
    py0 + (1 - t) * ((-s2) + (1 - t) * (2 * (-s2) + (1 - t) * 
    (8 - 12 * (-s2) + (1 - t) * (14 * (-s2) - 11 + (1 - t) * 
        (4 - 5 * (-s2)))))) * py1 + t * ((-s1) + t * (2 * (-s1) + 
    t * (8 - 12 * (-s1) + t * (14 * (-s1) - 11 + t * (4 - 5 * 
        (-s1)))))) * py2 + (t - 1) * ((-s2) + (t - 1) * (2 * 
    (-s2) + (t - 1) * (t - 1) * (-2 * (-s2) - (t - 1) * (-s2)))) * 
    py3) * ((-t) * ((-t) * ((-t) * (-t) * (-s1) - ((-t) + (-t)) * 
    (-2 * (-s1) - (-t) * (-s1))) - (2 * (-s1) + (-t) * (-t) * 
    (-2 * (-s1) - (-t) * (-s1)))) - ((-s1) + (-t) * (2 * (-s1) + 
    (-t) * (-t) * (-2 * (-s1) - (-t) * (-s1)))) - ((1 - t) * 
    ((1 - t) * ((1 - t) * ((1 - t) * (4 - 5 * (-s2)) + (14 * 
        (-s2) - 11 + (1 - t) * (4 - 5 * (-s2)))) + (8 - 12 * 
        (-s2) + (1 - t) * (14 * (-s2) - 11 + (1 - t) * (4 - 5 * 
        (-s2))))) + (2 * (-s2) + (1 - t) * (8 - 12 * (-s2) + 
        (1 - t) * (14 * (-s2) - 11 + (1 - t) * (4 - 5 * (-s2)))))) + 
    ((-s2) + (1 - t) * (2 * (-s2) + (1 - t) * (8 - 12 * (-s2) + 
        (1 - t) * (14 * (-s2) - 11 + (1 - t) * (4 - 5 * (-s2))))))) + 
    (((-s1) + t * (2 * (-s1) + t * (8 - 12 * (-s1) + t * (14 * 
        (-s1) - 11 + t * (4 - 5 * (-s1)))))) + t * ((2 * (-s1) + 
        t * (8 - 12 * (-s1) + t * (14 * (-s1) - 11 + t * (4 - 
            5 * (-s1))))) + t * ((8 - 12 * (-s1) + t * (14 * 
        (-s1) - 11 + t * (4 - 5 * (-s1)))) + t * ((14 * (-s1) - 
        11 + t * (4 - 5 * (-s1))) + t * (4 - 5 * (-s1)))))) + 
    (((-s2) + (t - 1) * (2 * (-s2) + (t - 1) * (t - 1) * (-2 * 
        (-s2) - (t - 1) * (-s2)))) + (t - 1) * ((2 * (-s2) + 
        (t - 1) * (t - 1) * (-2 * (-s2) - (t - 1) * (-s2))) + 
        (t - 1) * (((t - 1) + (t - 1)) * (-2 * (-s2) - (t - 1) * 
            (-s2)) - (t - 1) * (t - 1) * (-s2)))))/((-t) * ((-s1) + 
    (-t) * (2 * (-s1) + (-t) * (-t) * (-2 * (-s1) - (-t) * (-s1)))) + 
    (1 - t) * ((-s2) + (1 - t) * (2 * (-s2) + (1 - t) * (8 - 
        12 * (-s2) + (1 - t) * (14 * (-s2) - 11 + (1 - t) * (4 - 
        5 * (-s2)))))) + t * ((-s1) + t * (2 * (-s1) + t * (8 - 
    12 * (-s1) + t * (14 * (-s1) - 11 + t * (4 - 5 * (-s1)))))) + 
    (t - 1) * ((-s2) + (t - 1) * (2 * (-s2) + (t - 1) * (t - 
        1) * (-2 * (-s2) - (t - 1) * (-s2)))))^2)
}