chore: 添加第三方依赖库

thirdparty/rapier.js/src.ts/geometry/contact.ts

@@ -0,0 +1,62 @@
+import {Vector, VectorOps} from "../math";
+import {RawShapeContact} from "../raw";
+
+/**
+ * The contact info between two shapes.
+ */
+export class ShapeContact {
+    /**
+     * Distance between the two contact points.
+     * If this is negative, this contact represents a penetration.
+     */
+    distance: number;
+
+    /**
+     * Position of the contact on the first shape.
+     */
+    point1: Vector;
+
+    /**
+     * Position of the contact on the second shape.
+     */
+    point2: Vector;
+
+    /**
+     * Contact normal, pointing towards the exterior of the first shape.
+     */
+    normal1: Vector;
+
+    /**
+     * Contact normal, pointing towards the exterior of the second shape.
+     * If these contact data are expressed in world-space, this normal is equal to -normal1.
+     */
+    normal2: Vector;
+
+    constructor(
+        dist: number,
+        point1: Vector,
+        point2: Vector,
+        normal1: Vector,
+        normal2: Vector,
+    ) {
+        this.distance = dist;
+        this.point1 = point1;
+        this.point2 = point2;
+        this.normal1 = normal1;
+        this.normal2 = normal2;
+    }
+
+    public static fromRaw(raw: RawShapeContact): ShapeContact {
+        if (!raw) return null;
+
+        const result = new ShapeContact(
+            raw.distance(),
+            VectorOps.fromRaw(raw.point1()),
+            VectorOps.fromRaw(raw.point2()),
+            VectorOps.fromRaw(raw.normal1()),
+            VectorOps.fromRaw(raw.normal2()),
+        );
+        raw.free();
+        return result;
+    }
+}