private void SortEntities()
{
ExpPen.ToolAttribute[] orderedAttributes =
{
ExpPen.ToolAttribute.LT_CUT,
ExpPen.ToolAttribute.LT_CREASING,
ExpPen.ToolAttribute.LT_PERFOCREASING,
ExpPen.ToolAttribute.LT_HALFCUT,
ExpPen.ToolAttribute.LT_CONSTRUCTION,
ExpPen.ToolAttribute.LT_COTATION
};
// reorder entities
List <ExpEntity> entitiesOut = new List <ExpEntity>();
double xLatest = _xmin, yLatest = _ymin;
// loop through all pen types
foreach (ExpPen.ToolAttribute attribute in orderedAttributes)
{
bool found = true;
// loop through all entities
while (found)
{
found = false;
double distanceToLatest = double.MaxValue;
ExpEntity nearEntity = null;
int index = 0, nearIndex = 0;
foreach (ExpEntity entity in _entities)
{
// only deal with current attribute, unsorted entities
if (attribute != entity.Pen.Attribute || entity.Sorted)
{
continue;
}
// still some entity to be sorted
found = true;
// compute distance to latest point
double d = entity.Distance(xLatest, yLatest, out index);
if (d < distanceToLatest)
{
// save as smallest distance
distanceToLatest = d;
// save as nearest entity
nearEntity = entity;
// save as nearest point
nearIndex = index;
}
} // foreach
if (found)
{
nearEntity.Sorted = true;
nearEntity.Swaped = (nearIndex == 1);
entitiesOut.Add(nearEntity);
xLatest = nearEntity.X(nearIndex == 0 ? 1 : 0);
yLatest = nearEntity.Y(nearIndex == 0 ? 1 : 0);
}
}
}
_entities = entitiesOut;
}
