Struct epaint::image::ColorImage
source · [−]Expand description
A 2D RGBA color image in RAM.
Fields
size: [usize; 2]
width, height.
pixels: Vec<Color32>
The pixels, row by row, from top to bottom.
Implementations
sourceimpl ColorImage
impl ColorImage
sourcepub fn new(size: [usize; 2], color: Color32) -> Self
pub fn new(size: [usize; 2], color: Color32) -> Self
Create an image filled with the given color.
sourcepub fn from_rgba_unmultiplied(size: [usize; 2], rgba: &[u8]) -> Self
pub fn from_rgba_unmultiplied(size: [usize; 2], rgba: &[u8]) -> Self
Create a ColorImage
from flat un-multiplied RGBA data.
This is usually what you want to use after having loaded an image file.
Panics if size[0] * size[1] * 4 != rgba.len()
.
Example using the image
crate:
ⓘ
fn load_image_from_path(path: &std::path::Path) -> Result<egui::ColorImage, image::ImageError> {
let image = image::io::Reader::open(path)?.decode()?;
let size = [image.width() as _, image.height() as _];
let image_buffer = image.to_rgba8();
let pixels = image_buffer.as_flat_samples();
Ok(egui::ColorImage::from_rgba_unmultiplied(
size,
pixels.as_slice(),
))
}
fn load_image_from_memory(image_data: &[u8]) -> Result<ColorImage, image::ImageError> {
let image = image::load_from_memory(image_data)?;
let size = [image.width() as _, image.height() as _];
let image_buffer = image.to_rgba8();
let pixels = image_buffer.as_flat_samples();
Ok(ColorImage::from_rgba_unmultiplied(
size,
pixels.as_slice(),
))
}
pub fn width(&self) -> usize
pub fn height(&self) -> usize
Trait Implementations
sourceimpl Clone for ColorImage
impl Clone for ColorImage
sourcefn clone(&self) -> ColorImage
fn clone(&self) -> ColorImage
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Default for ColorImage
impl Default for ColorImage
sourcefn default() -> ColorImage
fn default() -> ColorImage
Returns the “default value” for a type. Read more
sourceimpl<'de> Deserialize<'de> for ColorImage
impl<'de> Deserialize<'de> for ColorImage
sourcefn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
sourceimpl From<ColorImage> for ImageData
impl From<ColorImage> for ImageData
sourcefn from(image: ColorImage) -> Self
fn from(image: ColorImage) -> Self
Converts to this type from the input type.
sourceimpl Index<(usize, usize)> for ColorImage
impl Index<(usize, usize)> for ColorImage
sourceimpl IndexMut<(usize, usize)> for ColorImage
impl IndexMut<(usize, usize)> for ColorImage
sourceimpl PartialEq<ColorImage> for ColorImage
impl PartialEq<ColorImage> for ColorImage
sourcefn eq(&self, other: &ColorImage) -> bool
fn eq(&self, other: &ColorImage) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourceimpl Serialize for ColorImage
impl Serialize for ColorImage
impl StructuralPartialEq for ColorImage
Auto Trait Implementations
impl RefUnwindSafe for ColorImage
impl Send for ColorImage
impl Sync for ColorImage
impl Unpin for ColorImage
impl UnwindSafe for ColorImage
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