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18 lines
692 B
18 lines
692 B
# Rotating triangle torus |
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define @angle0 (1/3) * φ |
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define @angle1 (1/3) * φ + ⅓π |
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define @angle2 (1/3) * φ + 2 * ⅓π |
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define @angle3 (1/3) * φ + π |
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define @angle4 (1/3) * φ + π + ⅓π |
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define @angle5 (1/3) * φ + 2π - ⅓π |
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define @exp1 (ρ - (3 * s) - s * (cos @angle0)) * (cos @angle1) + (z - s * (sin @angle0)) * (sin @angle1) |
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define @exp2 (ρ - (3 * s) - s * (cos @angle2)) * (cos @angle3) + (z - s * (sin @angle2)) * (sin @angle3) |
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define @exp3 (ρ - (3 * s) - s * (cos @angle4)) * (cos @angle5) + (z - s * (sin @angle4)) * (sin @angle5) |
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-5 * s < x < 5 * s |
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-5 * s < y < 5 * s |
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-s < z < s |
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{@exp1 < 0 and @exp2 < 0 and @exp3 < 0} xor {@exp1 < -1 and @exp2 < -2 and @exp3 < -1}
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