bombinans
/
fourdjs
1
1
Fork 0
Code Issues 11 Pull Requests Packages Projects Releases Wiki Activity

Merge branch 'feature-node-foreshortening'

feature-alt-projections
Mike Lynch 2024-04-14 16:10:23 +10:00
parent 680f9997f9 1e5db22c25
commit 1ec7955861
1 changed files with 29 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
fourDShape.js
View File

@ -2,7 +2,7 @@ import * as THREE from 'three';
const HYPERPLANE = 2.0; const HYPERPLANE = 2.0;
const NODE_FORESHORTENING = 0.4;
class FourDShape extends THREE.Group { class FourDShape extends THREE.Group {
@ -35,7 +35,7 @@ class FourDShape extends THREE.Group {
} }
} }
makeNode(material, v3) { makeNode(material, v3, scale) {
const geometry = new THREE.SphereGeometry(this.node_size); const geometry = new THREE.SphereGeometry(this.node_size);
const sphere = new THREE.Mesh(geometry, material); const sphere = new THREE.Mesh(geometry, material);
sphere.position.copy(v3); sphere.position.copy(v3);
@ -100,24 +100,41 @@ class FourDShape extends THREE.Group {
} }
fourDtoV3(x, y, z, w, rotations) { fourDtoV3_old(x, y, z, w, rotations) {
const v4 = new THREE.Vector4(x, y, z, w); const v4 = new THREE.Vector4(x, y, z, w);
for ( const m4 of rotations ) { for ( const m4 of rotations ) {
v4.applyMatrix4(m4); v4.applyMatrix4(m4);
} }
const k = this.hyperplane / (this.hyperplane + v4.w); const k = this.fourDscale(v4.w);
return new THREE.Vector3(v4.x * k, v4.y * k, v4.z * k); return new THREE.Vector3(v4.x * k, v4.y * k, v4.z * k);
} }
fourDscale(w) {
return this.hyperplane / ( this.hyperplane + w );
}
fourDrotate(x, y, z, w, rotations) {
const v4 = new THREE.Vector4(x, y, z, w);
for ( const m4 of rotations ) {
v4.applyMatrix4(m4);
}
return v4;
}
fourDtoV3(v4) {
const k = this.fourDscale(v4.w);
return new THREE.Vector3(v4.x * k, v4.y * k, v4.z * k);
}
initShapes() { initShapes() {
for( const n of this.nodes4 ) { for( const n of this.nodes4 ) {
const v3 = this.fourDtoV3(n.x, n.y, n.z, n.w, []); const k = this.fourDscale(n.w);
const v3 = new THREE.Vector3(n.x * k, n.y * k, n.z * k);
const material = this.getMaterial(n, this.node_ms); const material = this.getMaterial(n, this.node_ms);
this.nodes3[n.id] = { this.nodes3[n.id] = {
v3: v3, v3: v3,
label: n.label, label: n.label,
object: this.makeNode(material, v3) object: this.makeNode(material, v3, k)
}; };
} }
for( const l of this.links ) { for( const l of this.links ) {
@ -134,10 +151,14 @@ class FourDShape extends THREE.Group {
render3(rotations, nodes_show, links_show) { render3(rotations, nodes_show, links_show) {
this.scalev3 = new THREE.Vector3(this.node_scale, this.node_scale, this.node_scale); this.scalev3 = new THREE.Vector3(this.node_scale, this.node_scale, this.node_scale);
for( const n of this.nodes4 ) { for( const n of this.nodes4 ) {
const v3 = this.fourDtoV3(n.x, n.y, n.z, n.w, rotations); const v4 = this.fourDrotate(n.x, n.y, n.z, n.w, rotations);
const k = this.fourDscale(v4.w);
const v3 = new THREE.Vector3(v4.x * k, v4.y * k, v4.z * k);
const s4 = k * this.node_scale * NODE_FORESHORTENING;
const s3 = new THREE.Vector3(s4, s4, s4);
this.nodes3[n.id].v3 = v3; this.nodes3[n.id].v3 = v3;
this.nodes3[n.id].object.position.copy(v3); this.nodes3[n.id].object.position.copy(v3);
this.nodes3[n.id].object.scale.copy(this.scalev3); this.nodes3[n.id].object.scale.copy(s3);
this.nodes3[n.id].object.visible = ( !nodes_show || n.label in nodes_show ); this.nodes3[n.id].object.visible = ( !nodes_show || n.label in nodes_show );
} }
for( const l of this.links ) { for( const l of this.links ) {