From 0fbac1582829f1aea99a0c1a3ea117a3bcb47617 Mon Sep 17 00:00:00 2001
From: Quaternions <krakow20@gmail.com>
Date: Tue, 13 Feb 2024 23:56:24 -0800
Subject: [PATCH] obj

---
 src/obj.rs | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/obj.rs

diff --git a/src/obj.rs b/src/obj.rs
new file mode 100644
index 0000000..ddb59fb
--- /dev/null
+++ b/src/obj.rs
@@ -0,0 +1,41 @@
+
+pub fn generate_indexed_model_list_from_obj(data:obj::ObjData,color:Color4)->Vec<IndexedModel>{
+	let mut unique_vertex_index = std::collections::HashMap::<obj::IndexTuple,u32>::new();
+	return data.objects.iter().map(|object|{
+		unique_vertex_index.clear();
+		let mut unique_vertices = Vec::new();
+		let groups = object.groups.iter().map(|group|{
+			IndexedGroup{
+				texture:None,
+				polys:group.polys.iter().map(|poly|{
+					IndexedPolygon{
+						vertices:poly.0.iter().map(|&tup|{
+							if let Some(&i)=unique_vertex_index.get(&tup){
+								i
+							}else{
+								let i=unique_vertices.len() as u32;
+								unique_vertices.push(IndexedVertex{
+									pos: tup.0 as u32,
+									tex: tup.1.unwrap() as u32,
+									normal: tup.2.unwrap() as u32,
+									color: 0,
+								});
+								unique_vertex_index.insert(tup,i);
+								i
+							}
+						}).collect()
+					}
+				}).collect()
+			}
+		}).collect();
+		IndexedModel{
+			unique_pos: data.position.iter().map(|&v|Planar64Vec3::try_from(v).unwrap()).collect(),
+			unique_tex: data.texture.iter().map(|&v|TextureCoordinate::from_array(v)).collect(),
+			unique_normal: data.normal.iter().map(|&v|Planar64Vec3::try_from(v).unwrap()).collect(),
+			unique_color: vec![color],
+			unique_vertices,
+			groups,
+			instances:Vec::new(),
+		}
+	}).collect()
+}
\ No newline at end of file