Merge pull request #1448 from bungoboingo/fear/linear-gradients

Add linear gradient support to canvas widget

1 files changed, 31 insertions, 0 deletions

diff --git a/graphics/src/layer/mesh.rs b/graphics/src/layer/mesh.rs
new file mode 100644
index 00000000..979081f1
--- /dev/null
+++ b/graphics/src/layer/mesh.rs
@@ -0,0 +1,31 @@
+//! A collection of triangle primitives.
+use crate::triangle;
+use crate::{Point, Rectangle};
+
+/// A mesh of triangles.
+#[derive(Debug, Clone, Copy)]
+pub struct Mesh<'a> {
+    /// The origin of the vertices of the [`Mesh`].
+    pub origin: Point,
+
+    /// The vertex and index buffers of the [`Mesh`].
+    pub buffers: &'a triangle::Mesh2D,
+
+    /// The clipping bounds of the [`Mesh`].
+    pub clip_bounds: Rectangle<f32>,
+
+    /// The shader of the [`Mesh`].
+    pub style: &'a triangle::Style,
+}
+
+/// Returns the number of total vertices & total indices of all [`Mesh`]es.
+pub fn attribute_count_of<'a>(meshes: &'a [Mesh<'a>]) -> (usize, usize) {
+    meshes
+        .iter()
+        .map(|Mesh { buffers, .. }| {
+            (buffers.vertices.len(), buffers.indices.len())
+        })
+        .fold((0, 0), |(total_v, total_i), (v, i)| {
+            (total_v + v, total_i + i)
+        })
+}