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introduces a direction d initialised with the
direction of vector v.
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introduces the direction d of line l.
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introduces the direction d of ray r.
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introduces the direction d of segment s.
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introduces a direction d initialised with the direction
from the origin to the point with Cartesian coordinates (x, y, z).
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returns values, such that d== Direction_3<Kernel>(delta(0),delta(1),delta(2)). Precondition: : 0 i 2. |
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| returns delta(0). |
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| returns delta(1). |
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| returns delta(2). |
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Test for equality. | ||
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Test for inequality. | ||
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| The direction opposite to d. | |
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| returns a vector that has the same direction as d. |
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returns the direction obtained by applying t on d. |