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add operator != and operator == to btQuadWord,

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minor fix in 	btTransformUtil::calculateVelocityQuaternion, report zero angular velocity on identical transforms (using above operator to check identical transforms)
This commit is contained in:
erwin.coumans
2008-11-06 23:39:33 +00:00
parent a4c205afc0
commit 33ada42e18
3 changed files with 24 additions and 7 deletions
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18
src/LinearMath/btQuadWord.h
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@@ -54,8 +54,7 @@ class btQuadWord : public btQuadWordStorage
{
public:
// SIMD_FORCE_INLINE btScalar& operator[](int i) { return (&m_floats[0])[i]; }
// SIMD_FORCE_INLINE const btScalar& operator[](int i) const { return (&m_floats[0])[i]; }
/**@brief Return the x value */
SIMD_FORCE_INLINE const btScalar& getX() const { return m_floats[0]; }
/**@brief Return the y value */
@@ -79,10 +78,21 @@ class btQuadWord : public btQuadWordStorage
/**@brief Return the w value */
SIMD_FORCE_INLINE const btScalar& w() const { return m_floats[3]; }
//SIMD_FORCE_INLINE btScalar& operator[](int i) { return (&m_floats[0])[i]; }
//SIMD_FORCE_INLINE const btScalar& operator[](int i) const { return (&m_floats[0])[i]; }
///operator btScalar*() replaces operator[], using implicit conversion. We added operator != and operator == to avoid pointer comparisons.
SIMD_FORCE_INLINE operator btScalar *() { return &m_floats[0]; }
SIMD_FORCE_INLINE operator const btScalar *() const { return &m_floats[0]; }
SIMD_FORCE_INLINE operator btScalar *() { return &m_floats[0]; }
SIMD_FORCE_INLINE operator const btScalar *() const { return &m_floats[0]; }
SIMD_FORCE_INLINE bool operator==(const btQuadWord& other) const
{
return ((m_floats[3]==m_floats[3]) && (m_floats[2]==m_floats[2]) && (m_floats[1]==m_floats[1]) && (m_floats[0]==m_floats[0]));
}
SIMD_FORCE_INLINE bool operator!=(const btQuadWord& other) const
{
return !(*this == other);
}
/**@brief Set x,y,z and zero w
* @param x Value of x