90 lines
2.1 KiB
Rust
90 lines
2.1 KiB
Rust
#[macro_use]
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extern crate num_derive;
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pub use num_traits;
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use bytemuck::{Pod, Zeroable};
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#[repr(C)]
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#[derive(Copy, Clone, Debug, Pod, Zeroable)]
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pub struct Vec2 {
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pub x: f32,
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pub y: f32,
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}
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#[repr(C)]
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#[derive(Copy, Clone, Debug, Pod, Zeroable)]
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pub struct Color {
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pub r: f32,
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pub g: f32,
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pub b: f32,
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pub a: f32,
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}
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impl Color {
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pub const WHITE: Self = Self::new(1., 1., 1., 1.);
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pub const BLACK: Self = Self::new(0., 0., 0., 1.);
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pub const TRANSPARENT: Self = Self::new(0., 0., 0., 0.);
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pub const RED: Self = Self::new(1., 0., 0., 1.);
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pub const GREEN: Self = Self::new(1., 0., 0., 1.);
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pub const BLUE: Self = Self::new(0., 1., 0., 1.);
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pub const YELLOW: Self = Self::new(1., 1., 0., 1.);
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pub const MAGENTA: Self = Self::new(1., 0., 1., 1.);
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pub const CYAN: Self = Self::new(0., 1., 1., 1.);
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pub const fn new(r: f32, g: f32, b: f32, a: f32) -> Self {
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Self { r, g, b, a }
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}
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pub fn to_rgba_unmultiplied(&self) -> (u8, u8, u8, u8) {
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let map = |c: f32| (c * 255.0).floor() as u8;
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(map(self.r), map(self.g), map(self.b), map(self.a))
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}
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}
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#[repr(C)]
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#[derive(Copy, Clone, Debug, Pod, Zeroable)]
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pub struct MeshVertex {
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pub position: Vec2,
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pub color: Color,
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}
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pub type MeshIndex = u32;
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#[derive(Copy, Clone, Debug, Eq, PartialEq, FromPrimitive, ToPrimitive)]
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pub enum CursorEventKind {
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Hover = 0,
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Select = 1,
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Drag = 2,
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Deselect = 3,
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}
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#[cfg(feature = "glam")]
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mod glam_interop {
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use super::*;
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impl From<glam::Vec2> for Vec2 {
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fn from(other: glam::Vec2) -> Self {
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Self { x: other.x, y: other.y }
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}
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}
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impl From<Vec2> for glam::Vec2 {
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fn from(other: Vec2) -> Self {
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Self::new(other.x, other.y)
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}
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}
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impl From<glam::Vec4> for Color {
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fn from(other: glam::Vec4) -> Self {
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Self::new(other.x, other.y, other.z, other.w)
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}
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}
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impl From<Color> for glam::Vec4 {
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fn from(other: Color) -> Self {
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let Color { r, g, b, a } = other;
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Self::new(r, g, b, a)
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}
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}
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}
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