88 lines
1.7 KiB
C++
88 lines
1.7 KiB
C++
|
#include "osg/Transform"
|
||
|
|
||
|
using namespace osg;
|
||
|
|
||
|
Transform::Transform()
|
||
|
{
|
||
|
_matrix = new osg::Matrix();
|
||
|
_matrix->makeIdent();
|
||
|
}
|
||
|
|
||
|
|
||
|
Transform::Transform(const Matrix& mat )
|
||
|
{
|
||
|
(*_matrix) = mat;
|
||
|
}
|
||
|
|
||
|
|
||
|
Transform::~Transform()
|
||
|
{
|
||
|
}
|
||
|
|
||
|
|
||
|
void Transform::setMatrix(const Matrix& mat )
|
||
|
{
|
||
|
(*_matrix) = mat;
|
||
|
dirtyBound();
|
||
|
}
|
||
|
|
||
|
|
||
|
void Transform::preMult( const Matrix& mat )
|
||
|
{
|
||
|
_matrix->preMult( mat );
|
||
|
dirtyBound();
|
||
|
}
|
||
|
|
||
|
void Transform::preScale( const float sx, const float sy, const float sz )
|
||
|
{
|
||
|
_matrix->preScale( sx, sy, sz );
|
||
|
dirtyBound();
|
||
|
}
|
||
|
|
||
|
void Transform::preTranslate( const float tx, const float ty, const float tz )
|
||
|
{
|
||
|
_matrix->preTrans( tx, ty, tz );
|
||
|
dirtyBound();
|
||
|
}
|
||
|
|
||
|
|
||
|
void Transform::preRotate( const float deg, const float x, const float y, const float z )
|
||
|
{
|
||
|
_matrix->preRot( deg, x, y, z );
|
||
|
dirtyBound();
|
||
|
}
|
||
|
|
||
|
const bool Transform::computeBound() const
|
||
|
{
|
||
|
if (!Group::computeBound()) return false;
|
||
|
|
||
|
Vec3 xdash = _bsphere._center;
|
||
|
xdash.x() += _bsphere._radius;
|
||
|
xdash = xdash*(*_matrix);
|
||
|
|
||
|
Vec3 ydash = _bsphere._center;
|
||
|
ydash.y() += _bsphere._radius;
|
||
|
ydash = ydash*(*_matrix);
|
||
|
|
||
|
Vec3 zdash = _bsphere._center;
|
||
|
zdash.y() += _bsphere._radius;
|
||
|
zdash = zdash*(*_matrix);
|
||
|
|
||
|
_bsphere._center = _bsphere._center*(*_matrix);
|
||
|
|
||
|
xdash -= _bsphere._center;
|
||
|
float len_xdash = xdash.length();
|
||
|
|
||
|
ydash -= _bsphere._center;
|
||
|
float len_ydash = ydash.length();
|
||
|
|
||
|
zdash -= _bsphere._center;
|
||
|
float len_zdash = zdash.length();
|
||
|
|
||
|
_bsphere._radius = len_xdash;
|
||
|
if (_bsphere._radius<len_ydash) _bsphere._radius = len_ydash;
|
||
|
if (_bsphere._radius<len_zdash) _bsphere._radius = len_zdash;
|
||
|
|
||
|
return true;
|
||
|
}
|