First public release of Rapier.

src_testbed/objects/heightfield.rs

@@ -0,0 +1,120 @@
+#[cfg(feature = "dim3")]
+use crate::objects::node::{self, GraphicsNode};
+use kiss3d::window::Window;
+use na::{self, Point3};
+use ncollide::shape;
+#[cfg(feature = "dim3")]
+use ncollide::transformation::ToTriMesh;
+use rapier::geometry::{ColliderHandle, ColliderSet};
+#[cfg(feature = "dim2")]
+use rapier::math::Point;
+#[cfg(feature = "dim3")]
+use rapier::math::Vector;
+
+pub struct HeightField {
+    color: Point3<f32>,
+    base_color: Point3<f32>,
+    #[cfg(feature = "dim2")]
+    vertices: Vec<Point<f32>>,
+    #[cfg(feature = "dim3")]
+    gfx: GraphicsNode,
+    collider: ColliderHandle,
+}
+
+impl HeightField {
+    #[cfg(feature = "dim2")]
+    pub fn new(
+        collider: ColliderHandle,
+        heightfield: &shape::HeightField<f32>,
+        color: Point3<f32>,
+        _: &mut Window,
+    ) -> HeightField {
+        let mut vertices = Vec::new();
+
+        for seg in heightfield.segments() {
+            vertices.push(seg.a);
+            vertices.push(seg.b);
+        }
+
+        HeightField {
+            color,
+            base_color: color,
+            vertices,
+            collider,
+        }
+    }
+
+    #[cfg(feature = "dim3")]
+    pub fn new(
+        collider: ColliderHandle,
+        heightfield: &shape::HeightField<f32>,
+        color: Point3<f32>,
+        window: &mut Window,
+    ) -> HeightField {
+        let mesh = heightfield.to_trimesh(());
+
+        let mut res = HeightField {
+            color,
+            base_color: color,
+            gfx: window.add_trimesh(mesh, Vector::repeat(1.0)),
+            collider: collider,
+        };
+
+        res.gfx.enable_backface_culling(false);
+        res.gfx.set_color(color.x, color.y, color.z);
+
+        res
+    }
+
+    pub fn select(&mut self) {
+        self.color = Point3::new(1.0, 0.0, 0.0);
+    }
+
+    pub fn unselect(&mut self) {
+        self.color = self.base_color;
+    }
+
+    pub fn set_color(&mut self, color: Point3<f32>) {
+        #[cfg(feature = "dim3")]
+        {
+            self.gfx.set_color(color.x, color.y, color.z);
+        }
+        self.color = color;
+        self.base_color = color;
+    }
+
+    #[cfg(feature = "dim3")]
+    pub fn update(&mut self, colliders: &ColliderSet) {
+        node::update_scene_node(
+            &mut self.gfx,
+            colliders,
+            self.collider,
+            &self.color,
+            &na::Isometry::identity(),
+        );
+    }
+
+    #[cfg(feature = "dim2")]
+    pub fn update(&mut self, _colliders: &ColliderSet) {}
+
+    #[cfg(feature = "dim3")]
+    pub fn scene_node(&self) -> &GraphicsNode {
+        &self.gfx
+    }
+
+    #[cfg(feature = "dim3")]
+    pub fn scene_node_mut(&mut self) -> &mut GraphicsNode {
+        &mut self.gfx
+    }
+
+    pub fn object(&self) -> ColliderHandle {
+        self.collider
+    }
+
+    #[cfg(feature = "dim2")]
+    pub fn draw(&mut self, window: &mut Window) {
+        for vtx in self.vertices.chunks(2) {
+            window.draw_planar_line(&vtx[0], &vtx[1], &self.color)
+        }
+    }
+}