Initial project import

node_modules/three-stdlib/objects/ShadowMesh.js

@@ -0,0 +1,46 @@
+import { Mesh, MeshBasicMaterial, EqualStencilFunc, IncrementStencilOp, Matrix4 } from "three";
+const _shadowMatrix = /* @__PURE__ */ new Matrix4();
+class ShadowMesh extends Mesh {
+  constructor(mesh) {
+    const shadowMaterial = new MeshBasicMaterial({
+      color: 0,
+      transparent: true,
+      opacity: 0.6,
+      depthWrite: false,
+      stencilWrite: true,
+      stencilFunc: EqualStencilFunc,
+      stencilRef: 0,
+      stencilZPass: IncrementStencilOp
+    });
+    super(mesh.geometry, shadowMaterial);
+    this.isShadowMesh = true;
+    this.meshMatrix = mesh.matrixWorld;
+    this.frustumCulled = false;
+    this.matrixAutoUpdate = false;
+  }
+  update(plane, lightPosition4D) {
+    const dot = plane.normal.x * lightPosition4D.x + plane.normal.y * lightPosition4D.y + plane.normal.z * lightPosition4D.z + -plane.constant * lightPosition4D.w;
+    const sme = _shadowMatrix.elements;
+    sme[0] = dot - lightPosition4D.x * plane.normal.x;
+    sme[4] = -lightPosition4D.x * plane.normal.y;
+    sme[8] = -lightPosition4D.x * plane.normal.z;
+    sme[12] = -lightPosition4D.x * -plane.constant;
+    sme[1] = -lightPosition4D.y * plane.normal.x;
+    sme[5] = dot - lightPosition4D.y * plane.normal.y;
+    sme[9] = -lightPosition4D.y * plane.normal.z;
+    sme[13] = -lightPosition4D.y * -plane.constant;
+    sme[2] = -lightPosition4D.z * plane.normal.x;
+    sme[6] = -lightPosition4D.z * plane.normal.y;
+    sme[10] = dot - lightPosition4D.z * plane.normal.z;
+    sme[14] = -lightPosition4D.z * -plane.constant;
+    sme[3] = -lightPosition4D.w * plane.normal.x;
+    sme[7] = -lightPosition4D.w * plane.normal.y;
+    sme[11] = -lightPosition4D.w * plane.normal.z;
+    sme[15] = dot - lightPosition4D.w * -plane.constant;
+    this.matrix.multiplyMatrices(_shadowMatrix, this.meshMatrix);
+  }
+}
+export {
+  ShadowMesh
+};
+//# sourceMappingURL=ShadowMesh.js.map