LParabolad¶
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class
LParabolad¶ An abstract mathematical description of a parabola, particularly useful for describing arcs of projectiles.
The parabolic equation, given parametrically here, is P = At^2 + Bt + C.
Inheritance diagram
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LParabolad(void)¶
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LParabolad(LVecBase3d const &a, LVecBase3d const &b, LVecBase3d const &c)¶
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LParabolad(LParabolad const ©)¶ Constructs a meaningless degenerate parabola.
Constructs a parabola given the three points of the parametric equation: the acceleration, initial velocity, and start point.
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LVecBase3d const &
get_a(void) const¶ Returns the first point of the parabola’s parametric equation: the acceleration.
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LVecBase3d const &
get_b(void) const¶ Returns the second point of the parabola’s parametric equation: the initial velocity.
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LVecBase3d const &
get_c(void) const¶ Returns the third point of the parabola’s parametric equation: the start point.
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void
output(std::ostream &out) const¶
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void
read_datagram(DatagramIterator &source)¶ Reads the parabola from the Datagram using get_stdfloat().
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void
read_datagram_fixed(DatagramIterator &source)¶ Reads the parabola from the Datagram using get_float32() or get_float64(). See
write_datagram_fixed().
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void
write(std::ostream &out, int indent_level = 0) const¶
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void
write_datagram(Datagram &destination) const¶ Writes the parabola to the Datagram using add_stdfloat(). This is appropriate when you want to write the vector using the standard width setting, especially when you are writing a bam file.
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void
write_datagram_fixed(Datagram &destination) const¶ Writes the parabola to the Datagram using add_float32() or add_float64(), depending on the type of floats in the parabola, regardless of the setting of
Datagram::set_stdfloat_double(). This is appropriate when you want to write a fixed-width value to the datagram, especially when you are not writing a bam file.
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