添加关照、全局等高线、修改图层问题

dist/electron/static/sdk/three/jsm/geometries/ParametricGeometry.js

@@ -0,0 +1,139 @@
+/**
+ * Parametric Surfaces Geometry
+ * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html
+ */
+
+import {
+	BufferGeometry,
+	Float32BufferAttribute,
+	Vector3
+} from 'three';
+
+class ParametricGeometry extends BufferGeometry {
+
+	constructor( func = ( u, v, target ) => target.set( u, v, Math.cos( u ) * Math.sin( v ) ), slices = 8, stacks = 8 ) {
+
+		super();
+
+		this.type = 'ParametricGeometry';
+
+		this.parameters = {
+			func: func,
+			slices: slices,
+			stacks: stacks
+		};
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		const EPS = 0.00001;
+
+		const normal = new Vector3();
+
+		const p0 = new Vector3(), p1 = new Vector3();
+		const pu = new Vector3(), pv = new Vector3();
+
+		// generate vertices, normals and uvs
+
+		const sliceCount = slices + 1;
+
+		for ( let i = 0; i <= stacks; i ++ ) {
+
+			const v = i / stacks;
+
+			for ( let j = 0; j <= slices; j ++ ) {
+
+				const u = j / slices;
+
+				// vertex
+
+				func( u, v, p0 );
+				vertices.push( p0.x, p0.y, p0.z );
+
+				// normal
+
+				// approximate tangent vectors via finite differences
+
+				if ( u - EPS >= 0 ) {
+
+					func( u - EPS, v, p1 );
+					pu.subVectors( p0, p1 );
+
+				} else {
+
+					func( u + EPS, v, p1 );
+					pu.subVectors( p1, p0 );
+
+				}
+
+				if ( v - EPS >= 0 ) {
+
+					func( u, v - EPS, p1 );
+					pv.subVectors( p0, p1 );
+
+				} else {
+
+					func( u, v + EPS, p1 );
+					pv.subVectors( p1, p0 );
+
+				}
+
+				// cross product of tangent vectors returns surface normal
+
+				normal.crossVectors( pu, pv ).normalize();
+				normals.push( normal.x, normal.y, normal.z );
+
+				// uv
+
+				uvs.push( u, v );
+
+			}
+
+		}
+
+		// generate indices
+
+		for ( let i = 0; i < stacks; i ++ ) {
+
+			for ( let j = 0; j < slices; j ++ ) {
+
+				const a = i * sliceCount + j;
+				const b = i * sliceCount + j + 1;
+				const c = ( i + 1 ) * sliceCount + j + 1;
+				const d = ( i + 1 ) * sliceCount + j;
+
+				// faces one and two
+
+				indices.push( a, b, d );
+				indices.push( b, c, d );
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+}
+
+export { ParametricGeometry };