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#include "linalg.h"
#include <boost/math/special_functions/fpclassify.hpp>
// FIXME: We can achieve better pruning by either:
// o Recalculate the box based on the transformed object
// o Store boxes are oriented bounding boxes and implement oriented
// bbox intersection
// FIXME: This function can be generalized, but we don't need it atm.
/*!
Transforms the given bounding box by transforming each of its 8 vertices.
Returns a new bounding box.
*/
BoundingBox operator*(const Transform3d &m, const BoundingBox &box)
{
if (box.isEmpty()) return box;
BoundingBox newbox;
Vector3d boxvec[2] = { box.min(), box.max() };
for (int k=0;k<2;k++) {
for (int j=0;j<2;j++) {
for (int i=0;i<2;i++) {
newbox.extend(m * Vector3d(boxvec[i][0], boxvec[j][1], boxvec[k][2]));
}
}
}
return newbox;
}
bool matrix_contains_infinity( const Transform3d &m )
{
for (int i=0;i<m.matrix().rows();i++) {
for (int j=0;j<m.matrix().cols();j++) {
if ((boost::math::isinf)(m(i,j))) return true;
}
}
return false;
}
bool matrix_contains_nan( const Transform3d &m )
{
for (int i=0;i<m.matrix().rows();i++) {
for (int j=0;j<m.matrix().cols();j++) {
if ((boost::math::isnan)(m(i,j))) return true;
}
}
return false;
}
double getBoundingRadius(BoundingBox bbox)
{
// FIXME: For eigen3, we can use bbox.diagonal().norm()/2;
double radius = (bbox.max() - bbox.min()).norm() / 2;
return radius; // 0;
}
Vector3d getBoundingCenter(BoundingBox bbox)
{
// FIXME: For eigen3, we can use bbox.center();
Vector3d center = (bbox.min() + bbox.max()) / 2;
return center; // Vector3d(0,0,0);
}
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