Initial project import

node_modules/three-stdlib/misc/TubePainter.cjs

@@ -0,0 +1,124 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+function TubePainter() {
+  const BUFFER_SIZE = 1e6 * 3;
+  const positions = new THREE.BufferAttribute(new Float32Array(BUFFER_SIZE), 3);
+  positions.usage = THREE.DynamicDrawUsage;
+  const normals = new THREE.BufferAttribute(new Float32Array(BUFFER_SIZE), 3);
+  normals.usage = THREE.DynamicDrawUsage;
+  const colors = new THREE.BufferAttribute(new Float32Array(BUFFER_SIZE), 3);
+  colors.usage = THREE.DynamicDrawUsage;
+  const geometry = new THREE.BufferGeometry();
+  geometry.setAttribute("position", positions);
+  geometry.setAttribute("normal", normals);
+  geometry.setAttribute("color", colors);
+  geometry.drawRange.count = 0;
+  const material = new THREE.MeshStandardMaterial({
+    vertexColors: true
+  });
+  const mesh = new THREE.Mesh(geometry, material);
+  mesh.frustumCulled = false;
+  function getPoints(size2) {
+    const PI2 = Math.PI * 2;
+    const sides = 10;
+    const array = [];
+    const radius = 0.01 * size2;
+    for (let i = 0; i < sides; i++) {
+      const angle = i / sides * PI2;
+      array.push(new THREE.Vector3(Math.sin(angle) * radius, Math.cos(angle) * radius, 0));
+    }
+    return array;
+  }
+  const vector1 = new THREE.Vector3();
+  const vector2 = new THREE.Vector3();
+  const vector3 = new THREE.Vector3();
+  const vector4 = new THREE.Vector3();
+  const color = new THREE.Color(16777215);
+  let size = 1;
+  function stroke(position1, position2, matrix12, matrix22) {
+    if (position1.distanceToSquared(position2) === 0)
+      return;
+    let count2 = geometry.drawRange.count;
+    const points = getPoints(size);
+    for (let i = 0, il = points.length; i < il; i++) {
+      const vertex1 = points[i];
+      const vertex2 = points[(i + 1) % il];
+      vector1.copy(vertex1).applyMatrix4(matrix22).add(position2);
+      vector2.copy(vertex2).applyMatrix4(matrix22).add(position2);
+      vector3.copy(vertex2).applyMatrix4(matrix12).add(position1);
+      vector4.copy(vertex1).applyMatrix4(matrix12).add(position1);
+      vector1.toArray(positions.array, (count2 + 0) * 3);
+      vector2.toArray(positions.array, (count2 + 1) * 3);
+      vector4.toArray(positions.array, (count2 + 2) * 3);
+      vector2.toArray(positions.array, (count2 + 3) * 3);
+      vector3.toArray(positions.array, (count2 + 4) * 3);
+      vector4.toArray(positions.array, (count2 + 5) * 3);
+      vector1.copy(vertex1).applyMatrix4(matrix22).normalize();
+      vector2.copy(vertex2).applyMatrix4(matrix22).normalize();
+      vector3.copy(vertex2).applyMatrix4(matrix12).normalize();
+      vector4.copy(vertex1).applyMatrix4(matrix12).normalize();
+      vector1.toArray(normals.array, (count2 + 0) * 3);
+      vector2.toArray(normals.array, (count2 + 1) * 3);
+      vector4.toArray(normals.array, (count2 + 2) * 3);
+      vector2.toArray(normals.array, (count2 + 3) * 3);
+      vector3.toArray(normals.array, (count2 + 4) * 3);
+      vector4.toArray(normals.array, (count2 + 5) * 3);
+      color.toArray(colors.array, (count2 + 0) * 3);
+      color.toArray(colors.array, (count2 + 1) * 3);
+      color.toArray(colors.array, (count2 + 2) * 3);
+      color.toArray(colors.array, (count2 + 3) * 3);
+      color.toArray(colors.array, (count2 + 4) * 3);
+      color.toArray(colors.array, (count2 + 5) * 3);
+      count2 += 6;
+    }
+    geometry.drawRange.count = count2;
+  }
+  const up = new THREE.Vector3(0, 1, 0);
+  const point1 = new THREE.Vector3();
+  const point2 = new THREE.Vector3();
+  const matrix1 = new THREE.Matrix4();
+  const matrix2 = new THREE.Matrix4();
+  function moveTo(position) {
+    point1.copy(position);
+    matrix1.lookAt(point2, point1, up);
+    point2.copy(position);
+    matrix2.copy(matrix1);
+  }
+  function lineTo(position) {
+    point1.copy(position);
+    matrix1.lookAt(point2, point1, up);
+    stroke(point1, point2, matrix1, matrix2);
+    point2.copy(point1);
+    matrix2.copy(matrix1);
+  }
+  function setSize(value) {
+    size = value;
+  }
+  let count = 0;
+  function update() {
+    const start = count;
+    const end = geometry.drawRange.count;
+    if (start === end)
+      return;
+    positions.updateRange.offset = start * 3;
+    positions.updateRange.count = (end - start) * 3;
+    positions.needsUpdate = true;
+    normals.updateRange.offset = start * 3;
+    normals.updateRange.count = (end - start) * 3;
+    normals.needsUpdate = true;
+    colors.updateRange.offset = start * 3;
+    colors.updateRange.count = (end - start) * 3;
+    colors.needsUpdate = true;
+    count = geometry.drawRange.count;
+  }
+  return {
+    mesh,
+    moveTo,
+    lineTo,
+    setSize,
+    update
+  };
+}
+exports.TubePainter = TubePainter;
+//# sourceMappingURL=TubePainter.cjs.map