Struct geos::ContextHandle
source · [−]pub struct ContextHandle<'a> { /* private fields */ }
Implementations
sourceimpl<'a> ContextHandle<'a>
impl<'a> ContextHandle<'a>
sourcepub fn init() -> GResult<Self>
pub fn init() -> GResult<Self>
Creates a new ContextHandle
.
Example
use geos::ContextHandle;
let context_handle = ContextHandle::init().expect("invalid init");
sourcepub fn get_last_error(&self) -> Option<String>
pub fn get_last_error(&self) -> Option<String>
Returns the last error encountered.
Please note that calling this function will remove the current last error!
use geos::ContextHandle;
let context_handle = ContextHandle::init().expect("invalid init");
// make some functions calls...
if let Some(last_error) = context_handle.get_last_error() {
println!("We have an error: {}", last_error);
} else {
println!("No error occurred!");
}
sourcepub fn get_last_notification(&self) -> Option<String>
pub fn get_last_notification(&self) -> Option<String>
Returns the last notification encountered.
Please note that calling this function will remove the current last notification!
use geos::ContextHandle;
let context_handle = ContextHandle::init().expect("invalid init");
// make some functions calls...
if let Some(last_notif) = context_handle.get_last_notification() {
println!("We have a notification: {}", last_notif);
} else {
println!("No notifications!");
}
sourcepub fn get_wkb_output_dimensions(&self) -> GResult<OutputDimension>
pub fn get_wkb_output_dimensions(&self) -> GResult<OutputDimension>
Gets WKB output dimensions.
Example
use geos::{ContextHandle, OutputDimension};
let mut context_handle = ContextHandle::init().expect("invalid init");
context_handle.set_wkb_output_dimensions(OutputDimension::TwoD);
assert_eq!(context_handle.get_wkb_output_dimensions(), Ok(OutputDimension::TwoD));
sourcepub fn set_wkb_output_dimensions(
&mut self,
dimensions: OutputDimension
) -> GResult<OutputDimension>
pub fn set_wkb_output_dimensions(
&mut self,
dimensions: OutputDimension
) -> GResult<OutputDimension>
Sets WKB output dimensions.
Example
use geos::{ContextHandle, OutputDimension};
let mut context_handle = ContextHandle::init().expect("invalid init");
context_handle.set_wkb_output_dimensions(OutputDimension::TwoD);
assert_eq!(context_handle.get_wkb_output_dimensions(), Ok(OutputDimension::TwoD));
sourcepub fn get_wkb_byte_order(&self) -> ByteOrder
pub fn get_wkb_byte_order(&self) -> ByteOrder
Gets WKB byte order.
Example
use geos::{ContextHandle, ByteOrder};
let mut context_handle = ContextHandle::init().expect("invalid init");
context_handle.set_wkb_byte_order(ByteOrder::LittleEndian);
assert!(context_handle.get_wkb_byte_order() == ByteOrder::LittleEndian);
sourcepub fn set_wkb_byte_order(&mut self, byte_order: ByteOrder) -> ByteOrder
pub fn set_wkb_byte_order(&mut self, byte_order: ByteOrder) -> ByteOrder
Sets WKB byte order.
Example
use geos::{ContextHandle, ByteOrder};
let mut context_handle = ContextHandle::init().expect("invalid init");
context_handle.set_wkb_byte_order(ByteOrder::LittleEndian);
assert!(context_handle.get_wkb_byte_order() == ByteOrder::LittleEndian);
Trait Implementations
Auto Trait Implementations
impl<'a> RefUnwindSafe for ContextHandle<'a>
impl<'a> Send for ContextHandle<'a>
impl<'a> Sync for ContextHandle<'a>
impl<'a> Unpin for ContextHandle<'a>
impl<'a> UnwindSafe for ContextHandle<'a>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more