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quantize hpr to eliminate small values

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This commit is contained in:
David Rose 2002-06-20 23:37:03 +00:00
parent eaab3cbb4b
commit 45941b3fff
3 changed files with 15 additions and 5 deletions
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12
panda/src/tform/driveInterface.I
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@ -356,27 +356,29 @@ get_r() const {
//////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////
INLINE void DriveInterface:: INLINE void DriveInterface::
set_hpr(const LVecBase3f &hpr) { set_hpr(const LVecBase3f &hpr) {
_hpr = hpr; set_hpr(hpr[0], hpr[1], hpr[2]);
} }
INLINE void DriveInterface:: INLINE void DriveInterface::
set_hpr(float h, float p, float r) { set_hpr(float h, float p, float r) {
_hpr.set(h, p, r); set_h(h);
set_p(p);
set_r(r);
} }
INLINE void DriveInterface:: INLINE void DriveInterface::
set_h(float h) { set_h(float h) {
_hpr[0] = h; _hpr[0] = _hpr_quantize * floor(h / _hpr_quantize + 0.5f);
} }
INLINE void DriveInterface:: INLINE void DriveInterface::
set_p(float p) { set_p(float p) {
_hpr[1] = p; _hpr[1] = _hpr_quantize * floor(p / _hpr_quantize + 0.5f);
} }
INLINE void DriveInterface:: INLINE void DriveInterface::
set_r(float r) { set_r(float r) {
_hpr[2] = r; _hpr[2] = _hpr_quantize * floor(r / _hpr_quantize + 0.5f);
} }
//////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////

1
panda/src/tform/driveInterface.cxx
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@ -31,6 +31,7 @@
#include "dataGraphTraverser.h" #include "dataGraphTraverser.h"
TypeHandle DriveInterface::_type_handle; TypeHandle DriveInterface::_type_handle;
const float DriveInterface::_hpr_quantize = 0.001;
DriveInterface::KeyHeld:: DriveInterface::KeyHeld::
KeyHeld() { KeyHeld() {

7
panda/src/tform/driveInterface.h
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@ -171,6 +171,13 @@ private:
PT(EventStoreTransform) _transform; PT(EventStoreTransform) _transform;
PT(EventStoreVec3) _velocity; PT(EventStoreVec3) _velocity;
// This is the smallest meaningful value we can set on the hpr via
// the public set_hpr() interface. It's intended to filter out
// small meaningless perturbations of hpr that may get introduced
// due to numerical inaccuracy as we compute relative orientations
// in the show.
static const float _hpr_quantize;
public: public:
static TypeHandle get_class_type() { static TypeHandle get_class_type() {
return _type_handle; return _type_handle;