Merge pull request #354 from hecrj/feature/glow-renderer

OpenGL renderer and backend-agnostic graphics subcrate

1 files changed, 32 insertions, 0 deletions

diff --git a/graphics/src/triangle.rs b/graphics/src/triangle.rs
new file mode 100644
index 00000000..ce879ffc
--- /dev/null
+++ b/graphics/src/triangle.rs
@@ -0,0 +1,32 @@
+//! Draw geometry using meshes of triangles.
+
+/// A set of [`Vertex2D`] and indices representing a list of triangles.
+///
+/// [`Vertex2D`]: struct.Vertex2D.html
+#[derive(Clone, Debug)]
+pub struct Mesh2D {
+    /// The vertices of the mesh
+    pub vertices: Vec<Vertex2D>,
+
+    /// 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.
+    pub indices: Vec<u32>,
+}
+
+/// A two-dimensional vertex with some color in __linear__ RGBA.
+#[derive(Copy, Clone, Debug)]
+#[repr(C)]
+pub struct Vertex2D {
+    /// The vertex position
+    pub position: [f32; 2],
+    /// The vertex color in __linear__ RGBA.
+    pub color: [f32; 4],
+}
+
+#[allow(unsafe_code)]
+unsafe impl bytemuck::Zeroable for Vertex2D {}
+
+#[allow(unsafe_code)]
+unsafe impl bytemuck::Pod for Vertex2D {}