Shared via Rust Playground

playground.rs

use std::fmt;

struct Vector3<T>( T, T, T );
struct Vector4<T>( T, T, T, T );

struct Vertex
{
    pos : Vector3<f32>,
    color : Vector4<f32>,
    normal : Vector3<f32>
}

struct Mesh< 'a >
{
    verts : &'a mut [Vertex],
    triangles : &'a mut [Vector3<usize>],
}

impl<T : fmt::Display> fmt::Display for Vector3<T>{
    fn fmt( &self, f : &mut fmt::Formatter ) -> fmt::Result
    {
        write!( f, "Vec3({}, {}, {})", self.0, self.1, self.2 )  
    }
}

impl<T : fmt::Display> fmt::Display for Vector4<T>{
    fn fmt( &self, f : &mut fmt::Formatter ) -> fmt::Result
    {
        write!( f, "Vec4({}, {}, {}, {})", self.0, self.1, self.2, self.3 )  
    }
}

impl fmt::Display for Vertex
{
    fn fmt( &self, f : &mut fmt::Formatter ) -> fmt::Result
    {
        write!( f, "Vertex < pos: {}, loc: {}, norm: {} >", self.pos, self.color, self.normal )
    }
}

impl< 'a > Mesh<'a>{
    fn print( &self )
    {
        println!( "Mesh Print" );
        
        for triangle in self.triangles.iter()
        {
            println!( "Triangle : {}" triangle.);
            
            println!( "{}", self.verts[ triangle.0 ] );
            println!( "{}", self.verts[ triangle.1 ] );
            println!( "{}", self.verts[ triangle.2 ] );
        }
        
    }

}

fn main() {
    //let location = Vector3( 1.0, 2.0, 3.5 );
    //let triangles = Vector3( 0, 1, 2 );
    
    
    let vert1 = Vertex{
        pos : Vector3( -1.0, 1.0, 0.0 ),
        color : Vector4( 1.0, 1.0, 1.0, 1.0),
        normal : Vector3( 0.0, 0.0, -1.0 )
    };
    
    let vert2 = Vertex{
        pos : Vector3( 1.0, 1.0, 0.0 ),
        color : Vector4( 1.0, 1.0, 1.0, 1.0),
        normal : Vector3( 0.0, 0.0, -1.0 )
    };
    
    let vert3 = Vertex{
        pos : Vector3( -1.0, -1.0, 0.0 ),
        color : Vector4( 1.0, 1.0, 1.0, 1.0),
        normal : Vector3( 0.0, 0.0, -1.0 )
    };
    
    let vert4 = Vertex{
        pos : Vector3( 1.0, -1.0, 0.0 ),
        color : Vector4( 1.0, 1.0, 1.0, 1.0),
        normal : Vector3( 0.0, 0.0, -1.0 )
    };
    
    
        
    let mesh = Mesh{
        verts : &mut[vert1, vert2, vert3, vert4],
        triangles : &mut[ Vector3( 0usize, 1usize, 2usize ), Vector3( 1usize, 2usize, 3usize) ]
    };
    
    mesh.print()

    
    //println!( "{}, {}", location, triangles );
}