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added get_standardized_hpr

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This commit is contained in:
Dave Schuyler 2003-11-11 04:31:53 +00:00
parent 44baf4eb14
commit bfd4e276c3
2 changed files with 46 additions and 0 deletions
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44
panda/src/linmath/lvecBase3_src.I
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@ -441,6 +441,50 @@ operator != (const FLOATNAME(LVecBase3) &other) const {
return !operator == (other);
}
////////////////////////////////////////////////////////////////////
// Function: get_standardized_rotation
// Access: file
// Description: return value in the range -180.0 to 179.99999.
// See Also: get_standardized_hpr
////////////////////////////////////////////////////////////////////
static INLINE_LINMATH FLOATTYPE
get_standardized_rotation(FLOATTYPE angle_in_degrees) {
if (angle_in_degrees<0.0) {
angle_in_degrees = FLOATCONST(360.0) - fmod(angle_in_degrees * FLOATCONST(-1.0), FLOATCONST(360.0));
} else {
angle_in_degrees = fmod(angle_in_degrees, FLOATCONST(360.0));
}
// This can be changed to return values in the range 0.0 to 359.99999
// by skipping this next part and returning now.
return (angle_in_degrees<FLOATCONST(180.0))?
angle_in_degrees:
angle_in_degrees - FLOATCONST(360.0);
}
////////////////////////////////////////////////////////////////////
// Function: LVecBase3::compare_hpr_to
// Access: Public
// Description: Try to un-spin the hpr to a standard form. Like
// all standards, someone decides between many
// arbitrary posible standards. This function assumes
// that 0 and 360 are the same, as is 720 and
// -360. Also 180 and -180 are the same. Another
// example is -90 and 270.
// Each element will be in the range -180.0 to 179.99999.
// The original usage of this function is for human
// readable output and asserting that foo_hpr is roughly
// equal to bar_hpr.
// See Also: get_standardized_rotation
////////////////////////////////////////////////////////////////////
INLINE_LINMATH FLOATNAME(LVecBase3) FLOATNAME(LVecBase3)::
get_standardized_hpr() const {
return FLOATNAME(LVecBase3)(
get_standardized_rotation(_v.v._0),
get_standardized_rotation(_v.v._1),
get_standardized_rotation(_v.v._2));
}
////////////////////////////////////////////////////////////////////
// Function: LVecBase3::compare_to
// Access: Public

2
panda/src/linmath/lvecBase3_src.h
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@ -85,6 +85,8 @@ PUBLISHED:
INLINE_LINMATH bool operator == (const FLOATNAME(LVecBase3) &other) const;
INLINE_LINMATH bool operator != (const FLOATNAME(LVecBase3) &other) const;
INLINE_LINMATH FLOATNAME(LVecBase3) get_standardized_hpr() const;
INLINE_LINMATH int compare_to(const FLOATNAME(LVecBase3) &other) const;
INLINE_LINMATH int compare_to(const FLOATNAME(LVecBase3) &other,
FLOATTYPE threshold) const;