Add a hacky model bounding box info to rendering UI

Closes hannobraun#134

Signed-off-by: Daniel Egger <daniel@eggers-club.de>

src/graphics/config_ui.rs

@@ -6,6 +6,8 @@ use wgpu_glyph::{
  GlyphBrush, GlyphBrushBuilder, Section, Text,
 };
 
+use crate::math::Aabb;
+
 use super::{draw_config::DrawConfig, COLOR_FORMAT};
 
 #[derive(Debug)]
@@ -45,6 +47,7 @@ impl ConfigUi {
  encoder: &mut wgpu::CommandEncoder,
  view: &wgpu::TextureView,
  surface_config: &wgpu::SurfaceConfiguration,
+ aabb: &Aabb<3>,
  draw_config: &DrawConfig,
  ) -> Result<(), String> {
  let mut section = Section::new().with_screen_position((50.0, 50.0));
@@ -62,6 +65,19 @@ impl ConfigUi {
  section = section.add_text(text);
  }
 
+ /* Render size of model bounding box */
+ let bbsize = aabb.size().components();
+ let info = format!(
+ "Model bounding box size: {:0.1} {:0.1} {:0.1}",
+ bbsize[0].into_f32(),
+ bbsize[1].into_f32(),
+ bbsize[2].into_f32()
+ );
+ let text = Text::new(&info)
+ .with_color([0.0, 0.0, 0.0, 1.0])
+ .with_scale(50.0);
+ section = section.add_text(text);
+
  self.glyph_brush.queue(section);
  self.glyph_brush.draw_queued(
  device,

src/graphics/geometries.rs

@@ -1,3 +1,4 @@
+use crate::math::Aabb;
 use std::convert::TryInto;
 
 use wgpu::util::DeviceExt;
@@ -8,19 +9,21 @@ use super::vertices::{Vertex, Vertices};
 pub struct Geometries {
  pub mesh: Geometry,
  pub lines: Geometry,
+ pub aabb: Aabb<3>,
 }
 
 impl Geometries {
  pub fn new(
  device: &wgpu::Device,
  mesh: &Vertices,
  debug_info: &Vertices,
+ aabb: Aabb<3>,
  ) -> Self {
  let mesh = Geometry::new(device, mesh.vertices(), mesh.indices());
  let lines =
  Geometry::new(device, debug_info.vertices(), debug_info.indices());
 
- Self { mesh, lines }
+ Self { mesh, lines, aabb }
  }
 }
 

src/graphics/renderer.rs

@@ -6,7 +6,7 @@ use wgpu::util::DeviceExt as _;
 use wgpu_glyph::ab_glyph::InvalidFont;
 use winit::dpi::PhysicalSize;
 
-use crate::{camera::Camera, window::Window};
+use crate::{camera::Camera, math::Aabb, math::Point, window::Window};
 
 use super::{
  config_ui::ConfigUi, draw_config::DrawConfig, drawables::Drawables,
@@ -114,8 +114,15 @@ impl Renderer {
  label: None,
  });
 
- let geometries =
- Geometries::new(&device, &Vertices::empty(), &Vertices::empty());
+ let geometries = Geometries::new(
+ &device,
+ &Vertices::empty(),
+ &Vertices::empty(),
+ Aabb {
+ min: Point::from([0.0, 0.0, 0.0]),
+ max: Point::from([0.0, 0.0, 0.0]),
+ },
+ );
  let pipelines = Pipelines::new(&device, &bind_group_layout);
 
  let config_ui = ConfigUi::new(&device)?;
@@ -138,8 +145,13 @@ impl Renderer {
  })
  }
 
- pub fn update_geometry(&mut self, mesh: Vertices, lines: Vertices) {
- self.geometries = Geometries::new(&self.device, &mesh, &lines);
+ pub fn update_geometry(
+ &mut self,
+ mesh: Vertices,
+ lines: Vertices,
+ aabb: Aabb<3>,
+ ) {
+ self.geometries = Geometries::new(&self.device, &mesh, &lines, aabb);
  }
 
  pub fn handle_resize(&mut self, size: PhysicalSize<u32>) {
@@ -216,6 +228,7 @@ impl Renderer {
  &mut encoder,
  &color_view,
  &self.surface_config,
+ &self.geometries.aabb,
  config,
  )
  .map_err(|err| DrawError::Text(err))?;

src/main.rs

@@ -196,7 +196,7 @@ fn main() -> anyhow::Result<()> {
  let mut input_handler = input::Handler::new(previous_time);
  let mut renderer = block_on(Renderer::new(&window))?;
 
- renderer.update_geometry((&triangles).into(), (&debug_info).into());
+ renderer.update_geometry((&triangles).into(), (&debug_info).into(), aabb);
 
  let mut draw_config = DrawConfig::default();
  let mut camera = Camera::new(&aabb);
@@ -218,8 +218,11 @@ fn main() -> anyhow::Result<()> {
  aabb = shape.bounding_volume();
  faces.triangles(tolerance, &mut triangles, &mut debug_info);
 
- renderer
- .update_geometry((&triangles).into(), (&debug_info).into());
+ renderer.update_geometry(
+ (&triangles).into(),
+ (&debug_info).into(),
+ aabb,
+ );
  }
  Err(mpsc::TryRecvError::Empty) => {
  // Nothing to receive from the channel. We don't care.