Update nesting stuffs.

mcai · mcai · commit 1c0d6e87daf7 · 2020-12-11T12:29:05.000+08:00
diff --git a/src/primitives.ts b/src/primitives.ts
@@ -29,13 +29,13 @@ export function vectorLength(vector: Vector): number {
     return Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1]);
 }
 
-export function vectorNormalize(vector: Vector) {
+export function vectorNormalize(vector: Vector): Vector {
     const length = vectorLength(vector);
     return [vector[0] / length, vector[1] / length];
 }
 
 export function lineDirection(line: Line): Vector {
-    return pointVectorTo(line[0], line[1]);
+    return vectorNormalize(pointVectorTo(line[0], line[1]));
 }
 
 export function lineClosestPointTo(line: Line, p: Point): Point {

Original file line number	Diff line number	Diff line change
`@@ -29,13 +29,13 @@ export function vectorLength(vector: Vector): number {`
`29`	`29`	`return Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1]);`
`30`	`30`	`}`
`31`	`31`
`32`		`-export function vectorNormalize(vector: Vector) {`
	`32`	`+export function vectorNormalize(vector: Vector): Vector {`
`33`	`33`	`const length = vectorLength(vector);`
`34`	`34`	`return [vector[0] / length, vector[1] / length];`
`35`	`35`	`}`
`36`	`36`
`37`	`37`	`export function lineDirection(line: Line): Vector {`
`38`		`- return pointVectorTo(line[0], line[1]);`
	`38`	`+ return vectorNormalize(pointVectorTo(line[0], line[1]));`
`39`	`39`	`}`
`40`	`40`
`41`	`41`	`export function lineClosestPointTo(line: Line, p: Point): Point {`