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implement primitives

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Quaternions 2023-10-13 16:05:04 -07:00
parent ac2f1d3eac
commit 8fea9e0025
1 changed files with 52 additions and 53 deletions
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105
src/primitives.rs
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@ -1,4 +1,5 @@
use crate::model::{IndexedModel, IndexedPolygon, IndexedGroup, IndexedVertex};
use crate::model::{Color4,TextureCoordinate,IndexedModel,IndexedPolygon,IndexedGroup,IndexedVertex};
use crate::integer::Planar64Vec3;
#[derive(Debug)]
pub enum Primitives{
@ -17,24 +18,24 @@ pub enum CubeFace{
Bottom,
Front,
}
const CUBE_DEFAULT_TEXTURE_COORDS:[[f32;2];4]=[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0]];
const CUBE_DEFAULT_VERTICES:[[f32;3];8]=[
[-1.,-1., 1.],//0 left bottom back
[ 1.,-1., 1.],//1 right bottom back
[ 1., 1., 1.],//2 right top back
[-1., 1., 1.],//3 left top back
[-1., 1.,-1.],//4 left top front
[ 1., 1.,-1.],//5 right top front
[ 1.,-1.,-1.],//6 right bottom front
[-1.,-1.,-1.],//7 left bottom front
const CUBE_DEFAULT_TEXTURE_COORDS:[TextureCoordinate;4]=[[0.0,0.0].into(),[1.0,0.0].into(),[1.0,1.0].into(),[0.0,1.0].into()];
const CUBE_DEFAULT_VERTICES:[Planar64Vec3;8]=[
Planar64Vec3::int(-1,-1, 1),//0 left bottom back
Planar64Vec3::int( 1,-1, 1),//1 right bottom back
Planar64Vec3::int( 1, 1, 1),//2 right top back
Planar64Vec3::int(-1, 1, 1),//3 left top back
Planar64Vec3::int(-1, 1,-1),//4 left top front
Planar64Vec3::int( 1, 1,-1),//5 right top front
Planar64Vec3::int( 1,-1,-1),//6 right bottom front
Planar64Vec3::int(-1,-1,-1),//7 left bottom front
];
const CUBE_DEFAULT_NORMALS:[[f32;3];6]=[
[ 1., 0., 0.],//CubeFace::Right
[ 0., 1., 0.],//CubeFace::Top
[ 0., 0., 1.],//CubeFace::Back
[-1., 0., 0.],//CubeFace::Left
[ 0.,-1., 0.],//CubeFace::Bottom
[ 0., 0.,-1.],//CubeFace::Front
const CUBE_DEFAULT_NORMALS:[Planar64Vec3;6]=[
Planar64Vec3::int( 1, 0, 0),//CubeFace::Right
Planar64Vec3::int( 0, 1, 0),//CubeFace::Top
Planar64Vec3::int( 0, 0, 1),//CubeFace::Back
Planar64Vec3::int(-1, 0, 0),//CubeFace::Left
Planar64Vec3::int( 0,-1, 0),//CubeFace::Bottom
Planar64Vec3::int( 0, 0,-1),//CubeFace::Front
];
const CUBE_DEFAULT_POLYS:[[[u32;3];4];6]=[
// right (1, 0, 0)
@ -89,12 +90,12 @@ pub enum WedgeFace{
Left,
Bottom,
}
const WEDGE_DEFAULT_NORMALS:[[f32;3];5]=[
[ 1., 0., 0.],//Wedge::Right
[ 0., 1.,-1.],//Wedge::TopFront
[ 0., 0., 1.],//Wedge::Back
[-1., 0., 0.],//Wedge::Left
[ 0.,-1., 0.],//Wedge::Bottom
const WEDGE_DEFAULT_NORMALS:[Planar64Vec3;5]=[
Planar64Vec3::int( 1, 0, 0),//Wedge::Right
Planar64Vec3::int( 0, 1,-1),//Wedge::TopFront
Planar64Vec3::int( 0, 0, 1),//Wedge::Back
Planar64Vec3::int(-1, 0, 0),//Wedge::Left
Planar64Vec3::int( 0,-1, 0),//Wedge::Bottom
];
/*
local cornerWedgeVerticies = {
@ -113,20 +114,18 @@ pub enum CornerWedgeFace{
Bottom,
Front,
}
const CORNERWEDGE_DEFAULT_NORMALS:[[f32;3];5]=[
[ 1., 0., 0.],//CornerWedge::Right
[ 0., 1., 1.],//CornerWedge::BackTop
[-1., 1., 0.],//CornerWedge::LeftTop
[ 0.,-1., 0.],//CornerWedge::Bottom
[ 0., 0.,-1.],//CornerWedge::Front
const CORNERWEDGE_DEFAULT_NORMALS:[Planar64Vec3;5]=[
Planar64Vec3::int( 1, 0, 0),//CornerWedge::Right
Planar64Vec3::int( 0, 1, 1),//CornerWedge::BackTop
Planar64Vec3::int(-1, 1, 0),//CornerWedge::LeftTop
Planar64Vec3::int( 0,-1, 0),//CornerWedge::Bottom
Planar64Vec3::int( 0, 0,-1),//CornerWedge::Front
];
//HashMap fits this use case perfectly but feels like using a sledgehammer to drive a nail
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(),*glam::Vec4::ONE.as_ref()).remove(0);
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(){
pos[0]=pos[0]*0.5;
pos[1]=pos[1]*0.5;
pos[2]=pos[2]*0.5;
*pos=*pos/2;
}
indexed_model
}
@ -141,11 +140,11 @@ pub fn unit_cube()->crate::model::IndexedModel{
t.insert(CubeFace::Front,FaceDescription::default());
generate_partial_unit_cube(t)
}
const TEAPOT_TRANSFORM:glam::Mat3=glam::mat3(glam::vec3(0.0,0.1,0.0),glam::vec3(-0.1,0.0,0.0),glam::vec3(0.0,0.0,0.1));
const TEAPOT_TRANSFORM:crate::integer::Planar64Mat3=crate::integer::Planar64Mat3::int_from_cols_array([0,1,0, -1,0,0, 0,0,1])/10;
pub fn unit_cylinder()->crate::model::IndexedModel{
let mut indexed_model=crate::model::generate_indexed_model_list_from_obj(obj::ObjData::load_buf(&include_bytes!("../models/teapot.obj")[..]).unwrap(),*glam::Vec4::ONE.as_ref()).remove(0);
let mut indexed_model=crate::model::generate_indexed_model_list_from_obj(obj::ObjData::load_buf(&include_bytes!("../models/teapot.obj")[..]).unwrap(),Color4::ONE).remove(0);
for pos in indexed_model.unique_pos.iter_mut(){
[pos[0],pos[1],pos[2]]=*(TEAPOT_TRANSFORM*glam::Vec3::from_array(*pos)).as_ref();
*pos=TEAPOT_TRANSFORM*(*pos);
}
indexed_model
}
@ -174,33 +173,33 @@ pub fn unit_cornerwedge()->crate::model::IndexedModel{
pub struct FaceDescription{
pub texture:Option<u32>,
pub transform:glam::Affine2,
pub color:glam::Vec4,
pub color:Color4,
}
impl std::default::Default for FaceDescription{
fn default()->Self {
Self{
texture:None,
transform:glam::Affine2::IDENTITY,
color:glam::vec4(1.0,1.0,1.0,0.0),//zero alpha to hide the default texture
color:Color4::new(1.0,1.0,1.0,0.0),//zero alpha to hide the default texture
}
}
}
impl FaceDescription{
pub fn new(texture:u32,transform:glam::Affine2,color:glam::Vec4)->Self{
pub fn new(texture:u32,transform:glam::Affine2,color:Color4)->Self{
Self{texture:Some(texture),transform,color}
}
pub fn from_texture(texture:u32)->Self{
Self{
texture:Some(texture),
transform:glam::Affine2::IDENTITY,
color:glam::Vec4::ONE,
color:Color4::ONE,
}
}
}
//TODO: it's probably better to use a shared vertex buffer between all primitives and use indexed rendering instead of generating a unique vertex buffer for each primitive.
//implementation: put all roblox primitives into one model.groups <- this won't work but I forget why
pub fn generate_partial_unit_cube(face_descriptions:CubeFaceDescription)->crate::model::IndexedModel{
let mut generated_pos=Vec::<[f32;3]>::new();
let mut generated_pos=Vec::new();
let mut generated_tex=Vec::new();
let mut generated_normal=Vec::new();
let mut generated_color=Vec::new();
@ -217,16 +216,16 @@ pub fn generate_partial_unit_cube(face_descriptions:CubeFaceDescription)->crate:
let transform_index=transforms.len();
transforms.push(face_description.transform);
for tex in CUBE_DEFAULT_TEXTURE_COORDS{
generated_tex.push(*face_description.transform.transform_point2(glam::Vec2::from_array(tex)).as_ref());
generated_tex.push(face_description.transform.transform_point2(tex));
}
transform_index
} as u32;
let color_index=if let Some(color_index)=generated_color.iter().position(|color|color==face_description.color.as_ref()){
let color_index=if let Some(color_index)=generated_color.iter().position(|&color|color==face_description.color){
color_index
}else{
//create new color_index
let color_index=generated_color.len();
generated_color.push(*face_description.color.as_ref());
generated_color.push(face_description.color);
color_index
} as u32;
let face_id=match face{
@ -315,7 +314,7 @@ pub fn generate_partial_unit_wedge(face_descriptions:WedgeFaceDescription)->crat
[6,2,4],
],
];
let mut generated_pos=Vec::<[f32;3]>::new();
let mut generated_pos=Vec::new();
let mut generated_tex=Vec::new();
let mut generated_normal=Vec::new();
let mut generated_color=Vec::new();
@ -332,16 +331,16 @@ pub fn generate_partial_unit_wedge(face_descriptions:WedgeFaceDescription)->crat
let transform_index=transforms.len();
transforms.push(face_description.transform);
for tex in CUBE_DEFAULT_TEXTURE_COORDS{
generated_tex.push(*face_description.transform.transform_point2(glam::Vec2::from_array(tex)).as_ref());
generated_tex.push(face_description.transform.transform_point2(tex));
}
transform_index
} as u32;
let color_index=if let Some(color_index)=generated_color.iter().position(|color|color==face_description.color.as_ref()){
let color_index=if let Some(color_index)=generated_color.iter().position(|&color|color==face_description.color){
color_index
}else{
//create new color_index
let color_index=generated_color.len();
generated_color.push(*face_description.color.as_ref());
generated_color.push(face_description.color);
color_index
} as u32;
let face_id=match face{
@ -427,7 +426,7 @@ pub fn generate_partial_unit_cornerwedge(face_descriptions:CornerWedgeFaceDescri
[7,2,4],
],
];
let mut generated_pos=Vec::<[f32;3]>::new();
let mut generated_pos=Vec::new();
let mut generated_tex=Vec::new();
let mut generated_normal=Vec::new();
let mut generated_color=Vec::new();
@ -444,16 +443,16 @@ pub fn generate_partial_unit_cornerwedge(face_descriptions:CornerWedgeFaceDescri
let transform_index=transforms.len();
transforms.push(face_description.transform);
for tex in CUBE_DEFAULT_TEXTURE_COORDS{
generated_tex.push(*face_description.transform.transform_point2(glam::Vec2::from_array(tex)).as_ref());
generated_tex.push(face_description.transform.transform_point2(tex));
}
transform_index
} as u32;
let color_index=if let Some(color_index)=generated_color.iter().position(|color|color==face_description.color.as_ref()){
let color_index=if let Some(color_index)=generated_color.iter().position(|&color|color==face_description.color){
color_index
}else{
//create new color_index
let color_index=generated_color.len();
generated_color.push(*face_description.color.as_ref());
generated_color.push(face_description.color);
color_index
} as u32;
let face_id=match face{