Add a basic lines-based debug-renderer

src/pipeline/debug_render_pipeline/outlines.rs

@@ -0,0 +1,36 @@
+use crate::geometry::{Ball, Cuboid};
+#[cfg(feature = "dim3")]
+use crate::geometry::{Cone, Cylinder};
+use crate::math::{Point, Real, Vector};
+use std::any::TypeId;
+use std::collections::HashMap;
+
+#[cfg(feature = "dim2")]
+pub fn instances(nsubdivs: u32) -> HashMap<TypeId, Vec<Point<Real>>> {
+    let mut result = HashMap::new();
+    result.insert(
+        TypeId::of::<Cuboid>(),
+        Cuboid::new(Vector::repeat(0.5)).to_polyline(),
+    );
+    result.insert(TypeId::of::<Ball>(), Ball::new(0.5).to_polyline(nsubdivs));
+    result
+}
+
+#[cfg(feature = "dim3")]
+pub fn instances(nsubdivs: u32) -> HashMap<TypeId, (Vec<Point<Real>>, Vec<[u32; 2]>)> {
+    let mut result = HashMap::new();
+    result.insert(
+        TypeId::of::<Cuboid>(),
+        Cuboid::new(Vector::repeat(0.5)).to_outline(),
+    );
+    result.insert(TypeId::of::<Ball>(), Ball::new(0.5).to_outline(nsubdivs));
+    result.insert(
+        TypeId::of::<Cone>(),
+        Cone::new(0.5, 0.5).to_outline(nsubdivs),
+    );
+    result.insert(
+        TypeId::of::<Cylinder>(),
+        Cylinder::new(0.5, 0.5).to_outline(nsubdivs),
+    );
+    result
+}