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insane sphere gen

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Quaternions 2023-11-07 16:49:58 -08:00
parent dd6b5bed24
commit 1e4025d1d0
1 changed files with 140 additions and 0 deletions
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140
src/primitives.rs
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@ -126,6 +126,146 @@ const CORNERWEDGE_DEFAULT_NORMALS:[Planar64Vec3;5]=[
Planar64Vec3::int( 0,-1, 0),//CornerWedge::Bottom
Planar64Vec3::int( 0, 0,-1),//CornerWedge::Front
];
const GON:u32=6;
const SPHERE_STUFF:([[[[u32;3];4];((GON-1)*(GON-1)) as usize];6])={
const CUBE_EDGES:[[u32;2];12]=[[0,1],[0,3],[0,7],[1,2],[1,6],[2,3],[2,5],[3,4],[4,5],[4,7],[5,6],[6,7]];
const fn get_pos_id(p:[[u32;3];4],tex_id:u32)->u32{
if p[0][1]==tex_id{
return p[0][0];
}
if p[1][1]==tex_id{
return p[1][0];
}
if p[2][1]==tex_id{
return p[2][0];
}
if p[3][1]==tex_id{
return p[3][0];
}
panic!("tex missing")
}
const fn get_edge_id(v0:u32,v1:u32)->(u32,bool){
(match if v0<v1{[v0,v1]}else{[v1,v0]}{
[0,1]=>0,
[0,3]=>1,
[0,7]=>2,
[1,2]=>3,
[1,6]=>4,
[2,3]=>5,
[2,5]=>6,
[3,4]=>7,
[4,5]=>8,
[4,7]=>9,
[5,6]=>10,
[6,7]=>11,
_=>panic!(":)")
},v0<v1)
}
const fn get_idx(face_id:u32,v00:u32,v10:u32,v11:u32,v01:u32,x:u32,y:u32)->u32{
if x==0&&y==0{
return v00
}
if x==0&&y==GON-1{
return v01
}
if x==GON-1&&y==GON-1{
return v11
}
if x==GON-1&&y==0{
return v10
}
if x==0{
//left edge
let (edge_id,parity)=get_edge_id(v00,v01);
if parity{
return 8+edge_id*(GON-2)+(y-1)
}else{
return 8+edge_id*(GON-2)+(GON-(y-1))
}
}
if x==GON-1{
//right edge
let (edge_id,parity)=get_edge_id(v10,v11);
if parity{
return 8+edge_id*(GON-2)+(y-1)
}else{
return 8+edge_id*(GON-2)+(GON-(y-1))
}
}
if y==0{
//top edge
let (edge_id,parity)=get_edge_id(v00,v10);
if parity{
return 8+edge_id*(GON-2)+(x-1)
}else{
return 8+edge_id*(GON-2)+(GON-(x-1))
}
}
if y==GON-1{
//bottom edge
let (edge_id,parity)=get_edge_id(v01,v11);
if parity{
return 8+edge_id*(GON-2)+(x-1)
}else{
return 8+edge_id*(GON-2)+(GON-(x-1))
}
}
return 8+12*(GON-2)+face_id*(GON-2)*(GON-2)+(x-1)+(y-1)*(GON-2)
}
//topology (indexed polys)
let mut polys=[[[[0u32;3];4];((GON-1)*(GON-1)) as usize];6];
let mut face_id=0;
while face_id<6{
let p=CUBE_DEFAULT_POLYS[face_id];
//vertex ids
let v00=get_pos_id(p,0);//top left
let v10=get_pos_id(p,1);//top right
let v11=get_pos_id(p,2);//bottom right
let v01=get_pos_id(p,3);//bottom left
let mut i=0;
while i<(GON-1)*(GON-1){
let x=i as u32%GON;
let y=i as u32/GON;
let i00=get_idx(face_id as u32,v00,v10,v11,v01,x+0,y+0);
let i10=get_idx(face_id as u32,v00,v10,v11,v01,x+1,y+0);
let i11=get_idx(face_id as u32,v00,v10,v11,v01,x+1,y+1);
let i01=get_idx(face_id as u32,v00,v10,v11,v01,x+0,y+1);
//[pos,tex,norm]
polys[face_id][i as usize][0]=[i00,(x+0)+(y+0)*GON,i00];
polys[face_id][i as usize][1]=[i10,(x+1)+(y+0)*GON,i10];
polys[face_id][i as usize][2]=[i11,(x+1)+(y+1)*GON,i11];
polys[face_id][i as usize][3]=[i01,(x+0)+(y+1)*GON,i01];
i+=1;
}
face_id+=1;
}
//verts
const N_VERTS:usize=(8+12*(GON-2)+6*(GON-2)*(GON-2)) as usize;
let mut verts=[Planar64Vec3::ZERO;N_VERTS];
let mut i=0;
while i<8{
verts[i]=CUBE_DEFAULT_VERTICES[i].normalize();
i+=1;
}
i=0;
while i<12{
//
}
i=0;
while i<6{
//
}
//tex
let mut tex=[TextureCoordinate::new(0.0,0.0);(GON*GON) as usize];
let mut i=0;
while i<(GON*GON) as usize{
let x=i as u32%GON;
let y=i as u32/GON;
tex[i]=TextureCoordinate::new(x as f32/(GON-1) as f32,y as f32/(GON-1) as f32);
i+=1;
}
(verts,tex,polys)
};
pub fn unit_sphere()->crate::model::IndexedModel{
let mut indexed_model=crate::model::generate_indexed_model_list_from_obj(obj::ObjData::load_buf(&include_bytes!("../models/suzanne.obj")[..]).unwrap(),Color4::ONE).remove(0);
for pos in indexed_model.unique_pos.iter_mut(){