forked from StrafesNET/strafe-client
89 lines
2.2 KiB
Rust
89 lines
2.2 KiB
Rust
use crate::integer::Planar64Vec3;
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#[derive(Debug,Clone,Copy,Hash,Eq,PartialEq)]
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pub enum AabbFace{
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Right,//+X
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Top,
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Back,
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Left,
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Bottom,
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Front,
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}
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#[derive(Clone)]
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pub struct Aabb{
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pub min:Planar64Vec3,
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pub max:Planar64Vec3,
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}
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impl Default for Aabb {
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fn default()->Self {
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Self{min:Planar64Vec3::MAX,max:Planar64Vec3::MIN}
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}
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}
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impl Aabb{
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const VERTEX_DATA:[Planar64Vec3;8]=[
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Planar64Vec3::int( 1,-1,-1),
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Planar64Vec3::int( 1, 1,-1),
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Planar64Vec3::int( 1, 1, 1),
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Planar64Vec3::int( 1,-1, 1),
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Planar64Vec3::int(-1,-1, 1),
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Planar64Vec3::int(-1, 1, 1),
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Planar64Vec3::int(-1, 1,-1),
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Planar64Vec3::int(-1,-1,-1),
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];
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pub fn grow(&mut self,point:Planar64Vec3){
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self.min=self.min.min(point);
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self.max=self.max.max(point);
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}
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pub fn join(&mut self,aabb:&Aabb){
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self.min=self.min.min(aabb.min);
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self.max=self.max.max(aabb.max);
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}
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pub fn inflate(&mut self,hs:Planar64Vec3){
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self.min-=hs;
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self.max+=hs;
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}
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pub fn intersects(&self,aabb:&Aabb)->bool{
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(self.min.cmplt(aabb.max)&aabb.min.cmplt(self.max)).all()
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}
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pub fn normal(face:AabbFace)->Planar64Vec3{
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match face {
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AabbFace::Right=>Planar64Vec3::int(1,0,0),
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AabbFace::Top=>Planar64Vec3::int(0,1,0),
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AabbFace::Back=>Planar64Vec3::int(0,0,1),
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AabbFace::Left=>Planar64Vec3::int(-1,0,0),
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AabbFace::Bottom=>Planar64Vec3::int(0,-1,0),
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AabbFace::Front=>Planar64Vec3::int(0,0,-1),
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}
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}
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pub fn unit_vertices()->[Planar64Vec3;8] {
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return Self::VERTEX_DATA;
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}
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// pub fn face(&self,face:AabbFace)->Aabb {
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// let mut aabb=self.clone();
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// //in this implementation face = worldspace aabb face
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// match face {
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// AabbFace::Right => aabb.min.x=aabb.max.x,
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// AabbFace::Top => aabb.min.y=aabb.max.y,
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// AabbFace::Back => aabb.min.z=aabb.max.z,
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// AabbFace::Left => aabb.max.x=aabb.min.x,
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// AabbFace::Bottom => aabb.max.y=aabb.min.y,
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// AabbFace::Front => aabb.max.z=aabb.min.z,
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// }
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// return aabb;
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// }
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pub fn center(&self)->Planar64Vec3{
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return self.min.midpoint(self.max)
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}
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//probably use floats for area & volume because we don't care about precision
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// pub fn area_weight(&self)->f32{
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// let d=self.max-self.min;
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// d.x*d.y+d.y*d.z+d.z*d.x
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// }
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// pub fn volume(&self)->f32{
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// let d=self.max-self.min;
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// d.x*d.y*d.z
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// }
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} |