hodapp/prosha
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Beat my head into a wall some more on twisty_torus

Browse Source
This commit is contained in:
Chris Hodapp 2020-04-20 18:18:18 -04:00
parent e0baea62cc
commit 270435c4d6
1 changed files with 54 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
src/examples.rs
View File

@ -139,17 +139,17 @@ pub fn twist(f: f32, subdiv: usize) -> Rule<()> {
#[derive(Copy, Clone)]
pub struct TorusCtxt {
xform1: Transform,
xform2: Transform,
init: bool,
stack: [Transform; 3],
}
pub fn twisty_torus() -> Rule<TorusCtxt> {
let subdiv = 8;
let seed = vec![
vertex(-0.5, -0.5, 1.0),
vertex(-0.5, 0.5, 1.0),
vertex( 0.5, 0.5, 1.0),
vertex( 0.5, -0.5, 1.0),
vertex(-0.5, -0.5, 0.0),
vertex(-0.5, 0.5, 0.0),
vertex( 0.5, 0.5, 0.0),
vertex( 0.5, -0.5, 0.0),
];
let seed = util::subdivide_cycle(&seed, subdiv);
@ -161,23 +161,45 @@ pub fn twisty_torus() -> Rule<TorusCtxt> {
faces: faces,
});
let rad = 4.0;
let rad = 1.0;
let rad2 = 5.0;
let dx0 = 2.0;
let ang = 0.1;
let recur = move |self_: Rc<Rule<TorusCtxt>>| -> RuleEval<TorusCtxt> {
let y = &Vector3::y_axis();
//let y = &Vector3::y_axis();
let z = &Vector3::z_axis();
let xf1 = self_.ctxt.xform1;
let xf2 = self_.ctxt.xform2;
let stack = self_.ctxt.stack;
let next_rule = Rule {
eval: self_.eval.clone(),
ctxt: TorusCtxt {
xform1: xf1.rotate(y, 0.1),
xform2: xf2.rotate(z, ang),
init: false,
stack: [
stack[0],
Transform::new().rotate(z, 0.05) * stack[1],
Transform::new().translate(0.0, 0.0, 0.1) * stack[2],
],
},
};
let xf = xf1 * xf2;
let xf = stack.iter().fold(Transform::new(), |acc,m| acc * (*m));
if self_.ctxt.init {
let mut s2 = seed.clone();
let (centroid, f) = util::connect_convex(&s2, false);
s2.push(centroid);
let n2 = s2.len();
let g = OpenMesh { verts: s2, faces: f };
RuleEval {
geom: Rc::new(g.transform(&xf)),
final_geom: Rc::new(prim::empty_mesh()),
children: vec![
Child {
rule: Rc::new(next_rule),
xf: Transform::new(),
vmap: (0..n2).collect(),
},
],
}
} else {
RuleEval {
geom: Rc::new(geom.transform(&xf)),
final_geom: Rc::new(final_geom.transform(&xf)),
@ -189,40 +211,18 @@ pub fn twisty_torus() -> Rule<TorusCtxt> {
},
],
}
};
let start = move |self_: Rc<Rule<TorusCtxt>>| -> RuleEval<TorusCtxt> {
let xf1 = self_.ctxt.xform1;
let xf2 = self_.ctxt.xform2;
let xf = xf1 * xf2;
let mut s2 = seed.clone();
let (centroid, f) = util::connect_convex(&s2, false);
s2.push(centroid);
let n2 = s2.len();
let g = OpenMesh { verts: s2, faces: f };
let fg = prim::empty_mesh();
RuleEval {
geom: Rc::new(g.transform(&xf)),
final_geom: Rc::new(fg),
children: vec![
Child {
rule: Rc::new(Rule {
eval: Rc::new(recur.clone()),
ctxt: self_.ctxt,
}),
xf: Transform::new(),
vmap: (0..n2).collect(),
},
],
}
};
Rule {
eval: Rc::new(start),
eval: Rc::new(recur),
ctxt: TorusCtxt {
xform1: Transform::new().translate(rad, 0.0, 0.0),
xform2: Transform::new().translate(dx0, 0.0, 0.0),
init: true,
stack: [
Transform::new().translate(0.0, rad2, 0.0),
Transform::new().translate(rad, 0.0, 0.0),
Transform::new(), // .translate(dx0, 0.0, 0.0),
],
},
}
}