Group all solid triangles independently of color

graphics/src/triangle.rs

@@ -1,15 +1,12 @@
 //! Draw geometry using meshes of triangles.
-use crate::Color;
-#[cfg(not(target_arch = "wasm32"))]
-use crate::Gradient;
-
 use bytemuck::{Pod, Zeroable};
 
 /// A set of [`Vertex2D`] and indices representing a list of triangles.
 #[derive(Clone, Debug)]
-pub struct Mesh2D {
+pub struct Mesh2D<T> {
     /// The vertices of the mesh
-    pub vertices: Vec<Vertex2D>,
+    pub vertices: Vec<T>,
+
     /// The list of vertex indices that defines the triangles of the mesh.
     ///
     /// Therefore, this list should always have a length that is a multiple of 3.
@@ -24,25 +21,13 @@ pub struct Vertex2D {
     pub position: [f32; 2],
 }
 
-#[derive(Debug, Clone, PartialEq)]
-/// Supported shaders for triangle primitives.
-pub enum Style {
-    /// Fill a primitive with a solid color.
-    Solid(Color),
-    #[cfg(not(target_arch = "wasm32"))]
-    /// Fill a primitive with an interpolated color.
-    Gradient(Gradient),
-}
+/// A two-dimensional vertex with a color.
+#[derive(Copy, Clone, Debug, Zeroable, Pod)]
+#[repr(C)]
+pub struct ColoredVertex2D {
+    /// The vertex position in 2D space.
+    pub position: [f32; 2],
 
-impl From<Color> for Style {
-    fn from(color: Color) -> Self {
-        Self::Solid(color)
-    }
-}
-
-#[cfg(not(target_arch = "wasm32"))]
-impl From<Gradient> for Style {
-    fn from(gradient: Gradient) -> Self {
-        Self::Gradient(gradient)
-    }
+    /// The color of the vertex in __linear__ RGBA.
+    pub color: [f32; 4],
 }