Struct SsaaCanvas 

pub struct SsaaCanvas { /* private fields */ }

A supersampling anti-aliasing (SSAA) canvas wrapper that renders at a higher resolution on an offscreen canvas and downscales to the display canvas for smoother polygon edges in software-rendered 3D scenes.

The offscreen context is scaled by scale_factor so that all drawing code can use logical pixel coordinates without modification. After rendering, call present() to draw the high-resolution buffer onto the visible canvas with high-quality image smoothing.

Implementations

impl SsaaCanvas

Implements construction, presentation, and anti-aliasing methods for SsaaCanvas.

pub fn from_selector( canvas_selector: &str, width: f64, height: f64, ) -> Option<SsaaCanvas>

Creates an SsaaCanvas from a CSS selector using the default scale factor.

Arguments

• &str - The CSS selector for the display canvas element.
• f64 - The logical display width in CSS pixels.
• f64 - The logical display height in CSS pixels.

Returns

• Option<SsaaCanvas> - The SSAA canvas, or None if the canvas was not found.

pub fn from_selector_with_scale( canvas_selector: &str, width: f64, height: f64, scale_factor: f64, ) -> Option<SsaaCanvas>

Creates an SsaaCanvas from a CSS selector with a custom SSAA scale factor.

The offscreen canvas is created at width * scale_factor by height * scale_factor pixels, and its context is pre-scaled so that drawing code uses logical coordinates.

Arguments

• &str - The CSS selector for the display canvas element.
• f64 - The logical display width in CSS pixels.
• f64 - The logical display height in CSS pixels.
• f64 - The supersampling scale factor (e.g., 2.0 for 4x SSAA).

Returns

• Option<SsaaCanvas> - The SSAA canvas, or None if the canvas was not found.

pub fn present(&self)

Presents the offscreen buffer onto the display canvas with high-quality downscaling.

Enables imageSmoothingEnabled and imageSmoothingQuality = "high" on the display context, clears the display canvas, then draws the offscreen canvas scaled down to the logical display size. This is the core SSAA step that produces smooth polygon edges.

pub fn clear(&self)

Clears the offscreen buffer to transparent.

pub fn clear_with_color(&self, color: &str)

Clears the offscreen buffer and fills it with the given CSS color.

Arguments

• &str - The CSS color string.

pub fn enable_anti_aliasing(&self)

Enables high-quality anti-aliasing on both the display and offscreen contexts.

Sets imageSmoothingEnabled = true and imageSmoothingQuality = "high" on both contexts to ensure optimal image scaling quality.

impl SsaaCanvas

pub fn get_display_canvas(&self) -> &HtmlCanvasElement

pub fn get_mut_display_canvas(&mut self) -> &mut HtmlCanvasElement

pub fn set_display_canvas(&mut self, val: HtmlCanvasElement) -> &mut Self

pub fn get_display_context(&self) -> &CanvasRenderingContext2d

pub fn get_mut_display_context(&mut self) -> &mut CanvasRenderingContext2d

pub fn set_display_context( &mut self, val: CanvasRenderingContext2d, ) -> &mut Self

pub fn get_offscreen_canvas(&self) -> &HtmlCanvasElement

pub fn get_mut_offscreen_canvas(&mut self) -> &mut HtmlCanvasElement

pub fn set_offscreen_canvas(&mut self, val: HtmlCanvasElement) -> &mut Self

pub fn get_offscreen_context(&self) -> &CanvasRenderingContext2d

pub fn get_mut_offscreen_context(&mut self) -> &mut CanvasRenderingContext2d

pub fn set_offscreen_context( &mut self, val: CanvasRenderingContext2d, ) -> &mut Self

pub fn get_scale_factor(&self) -> f64

pub fn get_mut_scale_factor(&mut self) -> &mut f64

pub fn set_scale_factor(&mut self, val: f64) -> &mut Self

pub fn get_width(&self) -> f64

pub fn get_mut_width(&mut self) -> &mut f64

pub fn set_width(&mut self, val: f64) -> &mut Self

pub fn get_height(&self) -> f64

pub fn get_mut_height(&mut self) -> &mut f64

pub fn set_height(&mut self, val: f64) -> &mut Self

impl SsaaCanvas

pub fn new( display_canvas: HtmlCanvasElement, display_context: CanvasRenderingContext2d, offscreen_canvas: HtmlCanvasElement, offscreen_context: CanvasRenderingContext2d, scale_factor: f64, width: f64, height: f64, ) -> Self

Trait Implementations

impl Clone for SsaaCanvas

fn clone(&self) -> SsaaCanvas

Returns a duplicate of the value.

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

Performs copy-assignment from source.