X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bounding_box.rs;h=d5fa4139654327557a7d225b150a98fa331e4b6e;hb=45391f3ccaa74be2be93e4b31507f45939afa4b0;hp=95d3608768bebfc432e230d09c9a22f1cc5601d2;hpb=1124bb2dc1b8381bf4bfc437ab1689ec1b30d99b;p=mandelwow.git

diff --git a/bounding_box.rs b/bounding_box.rs
index 95d3608..d5fa413 100644
--- a/bounding_box.rs
+++ b/bounding_box.rs
@@ -6,50 +6,54 @@ use glium::index::{IndexBuffer, PrimitiveType};
 pub fn solid_fill_program(display: &Display) -> Program {
     let vertex_shader_src = include_str!("solid.vert");
     let fragment_shader_src = include_str!("solid.frag");
-    return Program::from_source(display, vertex_shader_src, fragment_shader_src, None).unwrap();
+    Program::from_source(display, vertex_shader_src, fragment_shader_src, None).unwrap()
 }
 
-pub fn draw<U>(display: &Display,
-               frame: &mut glium::Frame,
-               program: &Program,
-               uniforms: &U,
-               cube: &Cube) where U: glium::uniforms::Uniforms {
+#[derive(Copy, Clone)]
+struct Vertex { position: [f32; 3] }
+implement_vertex!(Vertex, position);
 
-    #[derive(Copy, Clone)]
-    struct Vertex { position: [f32; 3] }
-    implement_vertex!(Vertex, position);
-
-    let cube = [
-        Vertex { position: [cube.xmin, cube.ymin, cube.zmin] },
-        Vertex { position: [cube.xmax, cube.ymin, cube.zmin] },
-        Vertex { position: [cube.xmax, cube.ymax, cube.zmin] },
-        Vertex { position: [cube.xmin, cube.ymax, cube.zmin] },
-        Vertex { position: [cube.xmin, cube.ymin, cube.zmax] },
-        Vertex { position: [cube.xmax, cube.ymin, cube.zmax] },
-        Vertex { position: [cube.xmax, cube.ymax, cube.zmax] },
-        Vertex { position: [cube.xmin, cube.ymax, cube.zmax] },
-    ];
-    let vb = glium::VertexBuffer::new(display, &cube).unwrap();
+pub struct BoundingBox<'a> {
+    vertexes: glium::VertexBuffer<Vertex>,
+    program: &'a Program,
+    indices: IndexBuffer<u16>,
+}
 
-    let params = glium::DrawParameters {
-        depth: glium::Depth {
-            test: glium::draw_parameters::DepthTest::IfLess,
-            write: true,
+impl<'a> BoundingBox<'a> {
+    pub fn new(display: &Display, c: &Cube, program: &'a Program) -> BoundingBox<'a> {
+        let vertex_data = [
+            Vertex { position: [c.xmin, c.ymin, c.zmin] },
+            Vertex { position: [c.xmax, c.ymin, c.zmin] },
+            Vertex { position: [c.xmax, c.ymax, c.zmin] },
+            Vertex { position: [c.xmin, c.ymax, c.zmin] },
+            Vertex { position: [c.xmin, c.ymin, c.zmax] },
+            Vertex { position: [c.xmax, c.ymin, c.zmax] },
+            Vertex { position: [c.xmax, c.ymax, c.zmax] },
+            Vertex { position: [c.xmin, c.ymax, c.zmax] },
+        ];
+
+        const INDICES: &[u16] = &[0, 1, 1, 2, 2, 3, 3, 0,   // front
+                                  4, 5, 5, 6, 6, 7, 7, 4,   // back
+                                  0, 4, 1, 5, 2, 6, 3, 7];  // sides
+
+        BoundingBox {
+            vertexes: glium::VertexBuffer::new(display, &vertex_data).unwrap(),
+            program: program,
+            indices:  IndexBuffer::new(display, PrimitiveType::LinesList, INDICES).unwrap(),
+        }
+    }
+
+    pub fn draw<U>(&self, frame: &mut glium::Frame,
+                   uniforms: &U) where U: glium::uniforms::Uniforms {
+        let params = glium::DrawParameters {
+            depth: glium::Depth {
+                test: glium::draw_parameters::DepthTest::IfLess,
+                write: true,
+                ..Default::default()
+            },
+            blend: glium::Blend::alpha_blending(),
             ..Default::default()
-        },
-        blend: glium::Blend::alpha_blending(),
-        ..Default::default()
-    };
-
-    let front_indices = IndexBuffer::new(display, PrimitiveType::LineLoop,
-                                         &[0, 1, 2, 3u16]).unwrap();
-    frame.draw(&vb, &front_indices, program, uniforms, &params).unwrap();
-
-    let back_indices = IndexBuffer::new(display, PrimitiveType::LineLoop,
-                                        &[4, 5, 6, 7u16]).unwrap();
-    frame.draw(&vb, &back_indices, program, uniforms, &params).unwrap();
-
-    let sides_indices = IndexBuffer::new(display, PrimitiveType::LinesList,
-                                         &[0, 4, 1, 5, 2, 6, 3, 7u16]).unwrap();
-    frame.draw(&vb, &sides_indices, program, uniforms, &params).unwrap();
+        };
+        frame.draw(&self.vertexes, &self.indices, self.program, uniforms, &params).unwrap();
+    }
 }