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use math::*;

use std::rc::Rc;
use std::sync::Arc;
use std::cell::RefCell;

use crate::core::geometry::*;
use crate::core::resource::*;
use util::uuid::OsRandNewV4;

#[derive(Debug)]
pub struct MeshGeometry
{
	uuid: uuid::Uuid,
	vertices:float3s,
	normals:float3s,
	texcoords:float2s,
	indices:Vec<u16>,
}

impl MeshGeometry 
{
	pub fn new(vertices:float3s, normals:float3s, texcoords:float2s, indices:Vec<u16>) -> Self 
	{
		Self
		{
			uuid:uuid::Uuid::new_v4_osrng(),
			vertices:vertices,
			normals:normals,
			texcoords:texcoords,
			indices:indices,
		}
	}
}

impl Geometry for MeshGeometry
{
	fn vertices(&self) -> &[float3]
	{
		&self.vertices[..]
	}

	fn normals(&self) -> &[float3]
	{
		&self.normals[..]
	}

	fn texcoords(&self) -> &[float2]
	{
		&self.texcoords[..]
	}

	fn indices(&self) -> &[u16]
	{
		&self.indices[..]
	}
}

impl Resource for MeshGeometry
{
	#[inline]
	fn uuid(&self) -> &uuid::Uuid
	{
		&self.uuid
	}
}

impl From<MeshGeometry> for Rc<Geometry + 'static>
{
	fn from(shape:MeshGeometry) -> Self
	{
		Rc::new(shape)
	}
}

impl From<MeshGeometry> for Arc<Geometry + 'static>
{
	fn from(shape:MeshGeometry) -> Self
	{
		Arc::new(shape)
	}
}

impl From<MeshGeometry> for Rc<RefCell<Geometry + 'static>>
{
	fn from(shape:MeshGeometry) -> Self
	{
		Rc::new(RefCell::new(shape))
	}
}

impl From<MeshGeometry> for Arc<RefCell<Geometry + 'static>>
{
	fn from(shape:MeshGeometry) -> Self
	{
		Arc::new(RefCell::new(shape))
	}
}