refactor(geom): update PCLike copy() impls, add copyShape() helper

packages/geom/src/api/cubic.ts

@@ -1,6 +1,5 @@
 import { IHiccupPathSegment, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Cubic extends APC implements IHiccupPathSegment {
@@ -9,7 +8,7 @@ export class Cubic extends APC implements IHiccupPathSegment {
     }
 
     copy(): Cubic {
-        return new Cubic(copyVectors(this.points), copyAttribs(this));
+        return <Cubic>copyShape(Cubic, this);
     }
 
     toHiccup() {

packages/geom/src/api/line.ts

@@ -1,6 +1,5 @@
 import { IHiccupPathSegment, IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Line extends APC implements IHiccupShape, IHiccupPathSegment {
@@ -9,7 +8,7 @@ export class Line extends APC implements IHiccupShape, IHiccupPathSegment {
     }
 
     copy(): Line {
-        return new Line(copyVectors(this.points), copyAttribs(this));
+        return <Line>copyShape(Line, this);
     }
 
     toHiccup() {

packages/geom/src/api/points.ts

@@ -1,6 +1,5 @@
 import { IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Points extends APC implements IHiccupShape {
@@ -9,7 +8,7 @@ export class Points extends APC implements IHiccupShape {
     }
 
     copy(): Points {
-        return new Points(copyVectors(this.points), copyAttribs(this));
+        return <Points>copyShape(Points, this);
     }
 
     toHiccup() {

packages/geom/src/api/polygon.ts

@@ -1,6 +1,5 @@
 import { IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Polygon extends APC implements IHiccupShape {
@@ -9,7 +8,7 @@ export class Polygon extends APC implements IHiccupShape {
     }
 
     copy(): Polygon {
-        return new Polygon(copyVectors(this.points), copyAttribs(this));
+        return <Polygon>copyShape(Polygon, this);
     }
 
     toHiccup() {

packages/geom/src/api/polyline.ts

@@ -1,6 +1,5 @@
 import { IHiccupPathSegment, IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Polyline extends APC implements IHiccupShape, IHiccupPathSegment {
@@ -9,7 +8,7 @@ export class Polyline extends APC implements IHiccupShape, IHiccupPathSegment {
     }
 
     copy(): Polyline {
-        return new Polyline(copyVectors(this.points), copyAttribs(this));
+        return <Polyline>copyShape(Polyline, this);
     }
 
     toHiccup() {

packages/geom/src/api/quad.ts

@@ -1,6 +1,5 @@
 import { IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Quad extends APC implements IHiccupShape {
@@ -9,7 +8,7 @@ export class Quad extends APC implements IHiccupShape {
     }
 
     copy(): Quad {
-        return new Quad(copyVectors(this.points), copyAttribs(this));
+        return <Quad>copyShape(Quad, this);
     }
 
     toHiccup() {

packages/geom/src/api/quad3.ts

@@ -1,6 +1,5 @@
 import { IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Quad3 extends APC implements IHiccupShape {
@@ -9,7 +8,7 @@ export class Quad3 extends APC implements IHiccupShape {
     }
 
     copy(): Quad3 {
-        return new Quad3(copyVectors(this.points), copyAttribs(this));
+        return <Quad3>copyShape(Quad3, this);
     }
 
     toHiccup() {

packages/geom/src/api/quadratic.ts

@@ -1,6 +1,5 @@
 import { IHiccupPathSegment, IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Quadratic extends APC implements IHiccupShape, IHiccupPathSegment {
@@ -9,7 +8,7 @@ export class Quadratic extends APC implements IHiccupShape, IHiccupPathSegment {
     }
 
     copy(): Quadratic {
-        return new Quadratic(copyVectors(this.points), copyAttribs(this));
+        return <Quadratic>copyShape(Quadratic, this);
     }
 
     toHiccup() {

packages/geom/src/api/triangle.ts

@@ -1,6 +1,5 @@
 import { IHiccupShape, Type } from "@thi.ng/geom-api";
-import { copyVectors } from "@thi.ng/vectors";
-import { copyAttribs } from "../internal/copy-attribs";
+import { copyShape } from "../internal/copy-shape";
 import { APC } from "./apc";
 
 export class Triangle extends APC implements IHiccupShape {
@@ -9,7 +8,7 @@ export class Triangle extends APC implements IHiccupShape {
     }
 
     copy(): Triangle {
-        return new Triangle(copyVectors(this.points), copyAttribs(this));
+        return <Triangle>copyShape(Triangle, this);
     }
 
     toHiccup() {

packages/geom/src/index.ts

@@ -79,6 +79,7 @@ export * from "./ops/with-attribs";
 
 export * from "./internal/coll-bounds";
 export * from "./internal/copy-attribs";
+export * from "./internal/copy-shape";
 export * from "./internal/edges";
 export * from "./internal/pclike";
 export * from "./internal/points-as-shape";

packages/geom/src/internal/copy-shape.ts

@@ -0,0 +1,6 @@
+import { PCLike, PCLikeConstructor } from "@thi.ng/geom-api";
+import { copyVectors } from "@thi.ng/vectors";
+import { copyAttribs } from "./copy-attribs";
+
+export const copyShape = (ctor: PCLikeConstructor, inst: PCLike) =>
+    new ctor(copyVectors(inst.points), copyAttribs(inst));