Crate wizdraw

wizdraw - Portable crate to fill and stroke composite bezier curves (paths)

All operations are done on an offscreen canvas.

The CPU implementation is always available and performs OK.

Limitations

• Pixels are [R, G, B, A] values with 8-bit components
• Point coordinates are pairs of f32
• The GLES2 implementation’s output is currently only readable as RGBA5551

Features

• simd: include the SIMD canvas implementation
• gles2: include the OpenGL ES 2.0 canvas implementation
• contour: include path stroking code
• shapes: include basic shape generation code

By default, this crate doesn’t use SIMD because a nightly toolchain is required for that.

Example

let myrtle = Color::new(255, 100, 100, 255);
let texture = Texture::SolidColor(myrtle);

let oval = [
    CubicBezier {
        c1: Point::new(50.0, 250.0),
        c2: Point::new(50.0, 50.0),
        c3: Point::new(450.0, 50.0),
        c4: Point::new(450.0, 250.0),
    },
    CubicBezier {
        c1: Point::new(450.0, 250.0),
        c2: Point::new(450.0, 450.0),
        c3: Point::new(50.0, 450.0),
        c4: Point::new(50.0, 250.0),
    },
];

let mut canvas = wizdraw::cpu::Canvas::new(500, 500);
canvas.fill_cbc(&oval, &texture, false, SsaaConfig::X4);

// retrieve a framebuffer
let pixels = canvas.pixels();

Demo: PNG output

Check out the cpu example to generate this image:

Re-exports

pub extern crate rgb;

pub extern crate vek;

Modules

cpu

Implementations of Canvas using only the CPU

gles2

Implementations of Canvas using OpenGL ES 2.0

shapes

Structs

BitmapHandle

Texture handle created using a Canvas

CubicBezier

Cubic Bezier Curve, made of 4 control points

Enums

SsaaConfig

Super-Sampling Anti-Aliasing Configuration

Texture

The expected content of a filled path

Traits

Canvas

The trait that rendering backends must implement

Functions

contour

Creates a Contour composite bezier curve based on another one.

Type Aliases

Color

A 4-byte color (RGBA)

Point

Pixel or Subpixel coordinates