Enum las::raw::point::Flags

pub enum Flags {
    TwoByte(u8, u8),
    ThreeByte(u8, u8, u8),
}

These flags hold information about point classification, return number, and more.

In point formats zero through five, two bytes are used to hold all of the information. Point formats six through ten use an extra byte, to enable more return numbers, more classifications, and more.

This structure captures those alternatives and provides an API to convert between the two types. Two-byte flags can always be transformed to three-byte flags, but going from three-bytes to two-bytes can fail if information would be lost.

use las::raw::point::Flags;
let two_byte = Flags::TwoByte(0b00001001, 1);
assert_eq!(Flags::ThreeByte(0b00010001, 0, 1), two_byte.into());

// Two-byte flags can't handle this large of return numbers.
let three_byte = Flags::ThreeByte(0b10001000, 0, 1);
assert!(three_byte.to_two_bytes().is_err());

Variants

TwoByte(u8, u8)

Two byte flags, used for point formats zero through five.

ThreeByte(u8, u8, u8)

Three byte flags, used for point formats six through ten.

Implementations

impl Flags

pub fn return_number(&self) -> u8

Returns the return number.

Examples

use las::raw::point::Flags;
assert_eq!(1, Flags::TwoByte(1, 0).return_number());
assert_eq!(1, Flags::ThreeByte(1, 0, 0).return_number());

pub fn number_of_returns(&self) -> u8

Returns the number of returns.

Examples

use las::raw::point::Flags;
assert_eq!(1, Flags::TwoByte(8, 0).number_of_returns());
assert_eq!(1, Flags::ThreeByte(16, 0, 0).number_of_returns());

pub fn scan_direction(&self) -> ScanDirection

Returns the scan direction from these flags.

Examples

use las::raw::point::Flags;
use las::point::ScanDirection;
assert_eq!(ScanDirection::LeftToRight, Flags::TwoByte(0b01000000, 0).scan_direction());
assert_eq!(ScanDirection::LeftToRight, Flags::ThreeByte(0, 0b01000000, 0).scan_direction());

pub fn is_synthetic(&self) -> bool

Returns whether this point is synthetic.

Examples

use las::raw::point::Flags;
assert!(Flags::TwoByte(0, 0b00100000).is_synthetic());
assert!(Flags::ThreeByte(0, 1, 0).is_synthetic());

pub fn is_key_point(&self) -> bool

Returns whether this point is a key point.

Examples

use las::raw::point::Flags;
assert!(Flags::TwoByte(0, 0b01000000).is_key_point());
assert!(Flags::ThreeByte(0, 2, 0).is_key_point());

pub fn is_withheld(&self) -> bool

Returns whether this point is withheld.

Examples

use las::raw::point::Flags;
assert!(Flags::TwoByte(0, 0b10000000).is_withheld());
assert!(Flags::ThreeByte(0, 4, 0).is_withheld());

pub fn is_overlap(&self) -> bool

Returns whether this point is overlap.

Examples

use las::raw::point::Flags;
assert!(Flags::TwoByte(0, 12).is_overlap());
assert!(Flags::ThreeByte(0, 8, 0).is_overlap());

pub fn scanner_channel(&self) -> u8

Returns the scanner channel.

Examples

use las::raw::point::Flags;
assert_eq!(0, Flags::TwoByte(0, 0).scanner_channel());
assert_eq!(3, Flags::ThreeByte(0, 0b00110000, 0).scanner_channel());

pub fn is_edge_of_flight_line(&self) -> bool

Is this point the edge of a flight line?

Examples

use las::raw::point::Flags;
assert!(Flags::TwoByte(128, 0).is_edge_of_flight_line());
assert!(Flags::ThreeByte(0, 128, 0).is_edge_of_flight_line());

pub fn to_two_bytes(&self) -> Result<(u8, u8)>

Converts these flags into two bytes.

If these are two byte flags, no problem. However, if these are three byte flags, information could be lost — in that case, we error.

Example

use las::raw::point::Flags;
assert_eq!((1, 2), Flags::TwoByte(1, 2).to_two_bytes().unwrap());
assert!(Flags::ThreeByte(0b00001000, 0, 0).to_two_bytes().is_err());

pub fn to_classification(&self) -> Result<Classification>

Converts these flags to a classification.

Throws an error of the classifiction is 12 (overlap points), because we don’t have an overlap points class in this library. See the las::point::Classification documentation for more information.

Examples

use las::raw::point::Flags;
use las::point::Classification;
assert_eq!(Classification::Ground, Flags::TwoByte(0, 2).to_classification().unwrap());
assert_eq!(Classification::Ground, Flags::ThreeByte(0, 0, 2).to_classification().unwrap());
assert!(Flags::TwoByte(0, 12).to_classification().is_err());
assert!(Flags::ThreeByte(0, 0, 12).to_classification().is_err());

pub fn clear_overlap_class(&mut self)

Clears any overlap classes in these flags.

Examples

use las::raw::point::Flags;

let mut flags = Flags::TwoByte(0, 12);
flags.clear_overlap_class();
assert_eq!(Flags::TwoByte(0, 1), flags);

let mut flags = Flags::ThreeByte(0, 0, 12);
flags.clear_overlap_class();
assert_eq!(Flags::ThreeByte(0, 8, 1), flags);

Trait Implementations

impl Clone for Flags

fn clone(&self) -> Flags

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Flags

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Flags

fn default() -> Flags

Returns the “default value” for a type.

impl From<Flags> for (u8, u8, u8)

fn from(flags: Flags) -> (u8, u8, u8)

Converts to this type from the input type.

impl PartialEq for Flags

fn eq(&self, other: &Flags) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Flags