80 lines
2.2 KiB
Rust
80 lines
2.2 KiB
Rust
use cdl2d::shape;
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use kiss3d::window::Window;
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use na::{Isometry2, Point2, Point3};
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use nphysics2d::object::{ColliderAnchor, DefaultColliderHandle, DefaultColliderSet};
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pub struct Polyline {
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color: Point3<f32>,
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base_color: Point3<f32>,
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vertices: Vec<Point2<f32>>,
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indices: Vec<Point2<usize>>,
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collider: DefaultColliderHandle,
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pos: Isometry2<f32>,
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}
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impl Polyline {
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pub fn new(
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collider: DefaultColliderHandle,
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colliders: &DefaultColliderSet<f32>,
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_: Isometry2<f32>,
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vertices: Vec<Point2<f32>>,
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indices: Vec<Point2<usize>>,
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color: Point3<f32>,
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_: &mut Window,
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) -> Polyline {
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let mut res = Polyline {
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color,
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pos: Isometry2::identity(),
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base_color: color,
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vertices,
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indices,
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collider,
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};
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res.update(colliders);
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res
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}
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pub fn select(&mut self) {
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self.color = Point3::new(1.0, 0.0, 0.0);
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}
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pub fn unselect(&mut self) {
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self.color = self.base_color;
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}
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pub fn set_color(&mut self, color: Point3<f32>) {
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self.color = color;
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self.base_color = color;
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}
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pub fn update(&mut self, colliders: &DefaultColliderSet<f32>) {
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// Update if some deformation occurred.
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// FIXME: don't update if it did not move.
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if let Some(c) = colliders.get(self.collider) {
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self.pos = *c.position();
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if let ColliderAnchor::OnDeformableBody { .. } = c.anchor() {
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let shape = c.shape().as_shape::<shape::Polyline<f32>>().unwrap();
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self.vertices = shape.points().to_vec();
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self.indices.clear();
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for e in shape.edges() {
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self.indices.push(e.indices);
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}
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}
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}
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}
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pub fn object(&self) -> DefaultColliderHandle {
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self.collider
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}
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pub fn draw(&mut self, window: &mut Window) {
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for idx in &self.indices {
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let p1 = self.pos * self.vertices[idx.x];
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let p2 = self.pos * self.vertices[idx.y];
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window.draw_planar_line(&p1, &p2, &self.color)
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}
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}
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}
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