Initial project import

node_modules/three-stdlib/geometries/ParametricGeometries.cjs

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+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const ParametricGeometry = require("./ParametricGeometry.cjs");
+class TubeGeometry extends ParametricGeometry.ParametricGeometry {
+  constructor(path, segments = 64, radius = 1, segmentsRadius = 8, closed = false) {
+    const numpoints = segments + 1;
+    const frames = path.computeFrenetFrames(segments, closed), tangents = frames.tangents, normals = frames.normals, binormals = frames.binormals;
+    const position = new THREE.Vector3();
+    function ParametricTube(u, v, target) {
+      v *= 2 * Math.PI;
+      const i = Math.floor(u * (numpoints - 1));
+      path.getPointAt(u, position);
+      const normal = normals[i];
+      const binormal = binormals[i];
+      const cx = -radius * Math.cos(v);
+      const cy = radius * Math.sin(v);
+      position.x += cx * normal.x + cy * binormal.x;
+      position.y += cx * normal.y + cy * binormal.y;
+      position.z += cx * normal.z + cy * binormal.z;
+      target.copy(position);
+    }
+    super(ParametricTube, segments, segmentsRadius);
+    this.tangents = tangents;
+    this.normals = normals;
+    this.binormals = binormals;
+    this.path = path;
+    this.segments = segments;
+    this.radius = radius;
+    this.segmentsRadius = segmentsRadius;
+    this.closed = closed;
+  }
+}
+const ParametricGeometries = {
+  klein: function(v, u, target) {
+    u *= Math.PI;
+    v *= 2 * Math.PI;
+    u = u * 2;
+    let x, z;
+    if (u < Math.PI) {
+      x = 3 * Math.cos(u) * (1 + Math.sin(u)) + 2 * (1 - Math.cos(u) / 2) * Math.cos(u) * Math.cos(v);
+      z = -8 * Math.sin(u) - 2 * (1 - Math.cos(u) / 2) * Math.sin(u) * Math.cos(v);
+    } else {
+      x = 3 * Math.cos(u) * (1 + Math.sin(u)) + 2 * (1 - Math.cos(u) / 2) * Math.cos(v + Math.PI);
+      z = -8 * Math.sin(u);
+    }
+    const y = -2 * (1 - Math.cos(u) / 2) * Math.sin(v);
+    target.set(x, y, z);
+  },
+  plane: function(width, height) {
+    return function(u, v, target) {
+      const x = u * width;
+      const y = 0;
+      const z = v * height;
+      target.set(x, y, z);
+    };
+  },
+  mobius: function(u, t, target) {
+    u = u - 0.5;
+    const v = 2 * Math.PI * t;
+    const a = 2;
+    const x = Math.cos(v) * (a + u * Math.cos(v / 2));
+    const y = Math.sin(v) * (a + u * Math.cos(v / 2));
+    const z = u * Math.sin(v / 2);
+    target.set(x, y, z);
+  },
+  mobius3d: function(u, t, target) {
+    u *= Math.PI;
+    t *= 2 * Math.PI;
+    u = u * 2;
+    const phi = u / 2;
+    const major = 2.25, a = 0.125, b = 0.65;
+    let x = a * Math.cos(t) * Math.cos(phi) - b * Math.sin(t) * Math.sin(phi);
+    const z = a * Math.cos(t) * Math.sin(phi) + b * Math.sin(t) * Math.cos(phi);
+    const y = (major + x) * Math.sin(u);
+    x = (major + x) * Math.cos(u);
+    target.set(x, y, z);
+  },
+  TubeGeometry,
+  TorusKnotGeometry: class TorusKnotGeometry extends TubeGeometry {
+    constructor(radius = 200, tube = 40, segmentsT = 64, segmentsR = 8, p = 2, q = 3) {
+      class TorusKnotCurve extends THREE.Curve {
+        getPoint(t, optionalTarget = new THREE.Vector3()) {
+          const point = optionalTarget;
+          t *= Math.PI * 2;
+          const r = 0.5;
+          const x = (1 + r * Math.cos(q * t)) * Math.cos(p * t);
+          const y = (1 + r * Math.cos(q * t)) * Math.sin(p * t);
+          const z = r * Math.sin(q * t);
+          return point.set(x, y, z).multiplyScalar(radius);
+        }
+      }
+      const segments = segmentsT;
+      const radiusSegments = segmentsR;
+      const extrudePath = new TorusKnotCurve();
+      super(extrudePath, segments, tube, radiusSegments, true, false);
+      this.radius = radius;
+      this.tube = tube;
+      this.segmentsT = segmentsT;
+      this.segmentsR = segmentsR;
+      this.p = p;
+      this.q = q;
+    }
+  },
+  SphereGeometry: class SphereGeometry extends ParametricGeometry.ParametricGeometry {
+    constructor(size, u, v) {
+      function sphere(u2, v2, target) {
+        u2 *= Math.PI;
+        v2 *= 2 * Math.PI;
+        const x = size * Math.sin(u2) * Math.cos(v2);
+        const y = size * Math.sin(u2) * Math.sin(v2);
+        const z = size * Math.cos(u2);
+        target.set(x, y, z);
+      }
+      super(sphere, u, v);
+    }
+  },
+  PlaneGeometry: class PlaneGeometry extends ParametricGeometry.ParametricGeometry {
+    constructor(width, depth, segmentsWidth, segmentsDepth) {
+      function plane(u, v, target) {
+        const x = u * width;
+        const y = 0;
+        const z = v * depth;
+        target.set(x, y, z);
+      }
+      super(plane, segmentsWidth, segmentsDepth);
+    }
+  }
+};
+exports.ParametricGeometries = ParametricGeometries;
+//# sourceMappingURL=ParametricGeometries.cjs.map