Merge #241

241: Example to load and display a STL file r=kvark a=vishpat



Co-authored-by: Vishal Patil <[email protected]>

Cargo.toml

@@ -42,6 +42,7 @@ quick-error = "1.2"
 rodio = { version = "0.8", optional = true }
 mint = "0.5"
 vec_map = "0.8"
+stlv = "0.1.3"
 
 # OpenGL
 gfx_device_gl = { version = "0.16.2", optional = true }
@@ -86,6 +87,9 @@ name = "anim"
 [[example]]
 name = "text"
 
+[[example]]
+name = "stl"
+
 [[example]]
 name = "aviator"
 path = "examples/aviator/main.rs"

examples/stl.rs

@@ -0,0 +1,64 @@
+extern crate three;
+extern crate mint;
+extern crate froggy;
+
+use std::env;
+use three::{Geometry, Object};
+use mint::Point3;
+use froggy::WeakPointer;
+
+fn main() {
+    let mut args = env::args();
+    let path = args.nth(1).expect("Please provide STL file path");
+    let mut vertices = vec!();
+
+    match stlv::parser::load_file(path.as_str()) {
+        Ok(model) => {
+            for triangle in (*model).iter() {
+                let stl_vertices = triangle.vertices();
+                vertices.push(Point3 {
+                    x: stl_vertices[0].get_x(),
+                    y: stl_vertices[0].get_y(),
+                    z: stl_vertices[0].get_z(),
+                });
+                vertices.push(Point3 {
+                    x: stl_vertices[1].get_x(),
+                    y: stl_vertices[1].get_y(),
+                    z: stl_vertices[1].get_z(),
+                });
+                vertices.push(Point3 {
+                    x: stl_vertices[2].get_x(),
+                    y: stl_vertices[2].get_y(),
+                    z: stl_vertices[2].get_z(),
+                });
+            }
+        }
+        _ => panic!("Failed to parse the STL file {}", path),
+    }
+
+    let geometry = Geometry::with_vertices(vertices);
+
+    // Upload the triangle data to the GPU.
+    let mut window = three::Window::new("Loading STL...");
+
+    // Create multiple meshes with the same GPU data and material.
+    let material = three::material::Wireframe{color: 0xff0000};
+
+    let mesh = window.factory.mesh(geometry, material);
+    window.scene.add(&mesh);
+
+    let cam = window.factory.perspective_camera(60.0, 1.0 .. 1000.0);
+    let mut controls = three::controls::Orbit::builder(&cam)
+        .position([0.0, 2.0, -5.0])
+        .target([0.0, 0.0, 0.0])
+        .build();
+
+    let dir_light = window.factory.directional_light(0xffffff, 0.9);
+    dir_light.look_at([15.0, 35.0, 35.0], [0.0, 0.0, 2.0], None);
+    window.scene.add(&dir_light);
+
+    while window.update() && !window.input.hit(three::KEY_ESCAPE) {
+        controls.update(&window.input);
+        window.render(&cam);
+    }
+}